1 // vim: ts=8 sw=2 smarttab
3 * Ceph - scalable distributed file system
5 * Copyright (C) 2014 Red Hat
7 * This is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License version 2.1, as published by the Free Software
10 * Foundation. See file COPYING.
16 #include <sys/types.h>
20 #include "include/cpp-btree/btree_set.h"
22 #include "BlueStore.h"
24 #include "include/compat.h"
25 #include "include/intarith.h"
26 #include "include/stringify.h"
27 #include "common/errno.h"
28 #include "common/safe_io.h"
29 #include "common/PriorityCache.h"
30 #include "Allocator.h"
31 #include "FreelistManager.h"
33 #include "BlueRocksEnv.h"
34 #include "auth/Crypto.h"
35 #include "common/EventTrace.h"
36 #include "perfglue/heap_profiler.h"
38 #define dout_context cct
39 #define dout_subsys ceph_subsys_bluestore
41 using bid_t
= decltype(BlueStore::Blob::id
);
43 // bluestore_cache_onode
44 MEMPOOL_DEFINE_OBJECT_FACTORY(BlueStore::Onode
, bluestore_onode
,
45 bluestore_cache_onode
);
47 // bluestore_cache_other
48 MEMPOOL_DEFINE_OBJECT_FACTORY(BlueStore::Buffer
, bluestore_buffer
,
49 bluestore_cache_other
);
50 MEMPOOL_DEFINE_OBJECT_FACTORY(BlueStore::Extent
, bluestore_extent
,
51 bluestore_cache_other
);
52 MEMPOOL_DEFINE_OBJECT_FACTORY(BlueStore::Blob
, bluestore_blob
,
53 bluestore_cache_other
);
54 MEMPOOL_DEFINE_OBJECT_FACTORY(BlueStore::SharedBlob
, bluestore_shared_blob
,
55 bluestore_cache_other
);
58 MEMPOOL_DEFINE_OBJECT_FACTORY(BlueStore::TransContext
, bluestore_transcontext
,
63 const string PREFIX_SUPER
= "S"; // field -> value
64 const string PREFIX_STAT
= "T"; // field -> value(int64 array)
65 const string PREFIX_COLL
= "C"; // collection name -> cnode_t
66 const string PREFIX_OBJ
= "O"; // object name -> onode_t
67 const string PREFIX_OMAP
= "M"; // u64 + keyname -> value
68 const string PREFIX_DEFERRED
= "L"; // id -> deferred_transaction_t
69 const string PREFIX_ALLOC
= "B"; // u64 offset -> u64 length (freelist)
70 const string PREFIX_SHARED_BLOB
= "X"; // u64 offset -> shared_blob_t
72 // write a label in the first block. always use this size. note that
73 // bluefs makes a matching assumption about the location of its
74 // superblock (always the second block of the device).
75 #define BDEV_LABEL_BLOCK_SIZE 4096
77 // reserve: label (4k) + bluefs super (4k), which means we start at 8k.
78 #define SUPER_RESERVED 8192
80 #define OBJECT_MAX_SIZE 0xffffffff // 32 bits
84 * extent map blob encoding
86 * we use the low bits of the blobid field to indicate some common scenarios
87 * and spanning vs local ids. See ExtentMap::{encode,decode}_some().
89 #define BLOBID_FLAG_CONTIGUOUS 0x1 // this extent starts at end of previous
90 #define BLOBID_FLAG_ZEROOFFSET 0x2 // blob_offset is 0
91 #define BLOBID_FLAG_SAMELENGTH 0x4 // length matches previous extent
92 #define BLOBID_FLAG_SPANNING 0x8 // has spanning blob id
93 #define BLOBID_SHIFT_BITS 4
96 * object name key structure
98 * encoded u8: shard + 2^7 (so that it sorts properly)
99 * encoded u64: poolid + 2^63 (so that it sorts properly)
100 * encoded u32: hash (bit reversed)
102 * escaped string: namespace
104 * escaped string: key or object name
105 * 1 char: '<', '=', or '>'. if =, then object key == object name, and
106 * we are done. otherwise, we are followed by the object name.
107 * escaped string: object name (unless '=' above)
110 * encoded u64: generation
113 #define ONODE_KEY_SUFFIX 'o'
122 #define EXTENT_SHARD_KEY_SUFFIX 'x'
125 * string encoding in the key
127 * The key string needs to lexicographically sort the same way that
128 * ghobject_t does. We do this by escaping anything <= to '#' with #
129 * plus a 2 digit hex string, and anything >= '~' with ~ plus the two
132 * We use ! as a terminator for strings; this works because it is < #
133 * and will get escaped if it is present in the string.
137 static void append_escaped(const string
&in
, S
*out
)
139 char hexbyte
[in
.length() * 3 + 1];
140 char* ptr
= &hexbyte
[0];
141 for (string::const_iterator i
= in
.begin(); i
!= in
.end(); ++i
) {
144 *ptr
++ = "0123456789abcdef"[(*i
>> 4) & 0x0f];
145 *ptr
++ = "0123456789abcdef"[*i
& 0x0f];
146 } else if (*i
>= '~') {
148 *ptr
++ = "0123456789abcdef"[(*i
>> 4) & 0x0f];
149 *ptr
++ = "0123456789abcdef"[*i
& 0x0f];
155 out
->append(hexbyte
, ptr
- &hexbyte
[0]);
158 inline unsigned h2i(char c
)
160 if ((c
>= '0') && (c
<= '9')) {
162 } else if ((c
>= 'a') && (c
<= 'f')) {
164 } else if ((c
>= 'A') && (c
<= 'F')) {
167 return 256; // make it always larger than 255
171 static int decode_escaped(const char *p
, string
*out
)
174 char* ptr
= &buff
[0];
175 char* max
= &buff
[252];
176 const char *orig_p
= p
;
177 while (*p
&& *p
!= '!') {
178 if (*p
== '#' || *p
== '~') {
181 hex
= h2i(*p
++) << 4;
194 out
->append(buff
, ptr
-buff
);
199 out
->append(buff
, ptr
-buff
);
204 // some things we encode in binary (as le32 or le64); print the
205 // resulting key strings nicely
207 static string
pretty_binary_string(const S
& in
)
211 out
.reserve(in
.length() * 3);
212 enum { NONE
, HEX
, STRING
} mode
= NONE
;
213 unsigned from
= 0, i
;
214 for (i
=0; i
< in
.length(); ++i
) {
215 if ((in
[i
] < 32 || (unsigned char)in
[i
] > 126) ||
216 (mode
== HEX
&& in
.length() - i
>= 4 &&
217 ((in
[i
] < 32 || (unsigned char)in
[i
] > 126) ||
218 (in
[i
+1] < 32 || (unsigned char)in
[i
+1] > 126) ||
219 (in
[i
+2] < 32 || (unsigned char)in
[i
+2] > 126) ||
220 (in
[i
+3] < 32 || (unsigned char)in
[i
+3] > 126)))) {
221 if (mode
== STRING
) {
222 out
.append(in
.c_str() + from
, i
- from
);
229 if (in
.length() - i
>= 4) {
230 // print a whole u32 at once
231 snprintf(buf
, sizeof(buf
), "%08x",
232 (uint32_t)(((unsigned char)in
[i
] << 24) |
233 ((unsigned char)in
[i
+1] << 16) |
234 ((unsigned char)in
[i
+2] << 8) |
235 ((unsigned char)in
[i
+3] << 0)));
238 snprintf(buf
, sizeof(buf
), "%02x", (int)(unsigned char)in
[i
]);
242 if (mode
!= STRING
) {
249 if (mode
== STRING
) {
250 out
.append(in
.c_str() + from
, i
- from
);
257 static void _key_encode_shard(shard_id_t shard
, T
*key
)
259 key
->push_back((char)((uint8_t)shard
.id
+ (uint8_t)0x80));
262 static const char *_key_decode_shard(const char *key
, shard_id_t
*pshard
)
264 pshard
->id
= (uint8_t)*key
- (uint8_t)0x80;
268 static void get_coll_key_range(const coll_t
& cid
, int bits
,
269 string
*temp_start
, string
*temp_end
,
270 string
*start
, string
*end
)
278 if (cid
.is_pg(&pgid
)) {
279 _key_encode_shard(pgid
.shard
, start
);
280 *temp_start
= *start
;
282 _key_encode_u64(pgid
.pool() + 0x8000000000000000ull
, start
);
283 _key_encode_u64((-2ll - pgid
.pool()) + 0x8000000000000000ull
, temp_start
);
286 *temp_end
= *temp_start
;
288 uint32_t reverse_hash
= hobject_t::_reverse_bits(pgid
.ps());
289 _key_encode_u32(reverse_hash
, start
);
290 _key_encode_u32(reverse_hash
, temp_start
);
292 uint64_t end_hash
= reverse_hash
+ (1ull << (32 - bits
));
293 if (end_hash
> 0xffffffffull
)
294 end_hash
= 0xffffffffull
;
296 _key_encode_u32(end_hash
, end
);
297 _key_encode_u32(end_hash
, temp_end
);
299 _key_encode_shard(shard_id_t::NO_SHARD
, start
);
300 _key_encode_u64(-1ull + 0x8000000000000000ull
, start
);
302 _key_encode_u32(0, start
);
303 _key_encode_u32(0xffffffff, end
);
305 // no separate temp section
311 static void get_shared_blob_key(uint64_t sbid
, string
*key
)
314 _key_encode_u64(sbid
, key
);
317 static int get_key_shared_blob(const string
& key
, uint64_t *sbid
)
319 const char *p
= key
.c_str();
320 if (key
.length() < sizeof(uint64_t))
322 _key_decode_u64(p
, sbid
);
327 static int get_key_object(const S
& key
, ghobject_t
*oid
)
330 const char *p
= key
.c_str();
332 if (key
.length() < 1 + 8 + 4)
334 p
= _key_decode_shard(p
, &oid
->shard_id
);
337 p
= _key_decode_u64(p
, &pool
);
338 oid
->hobj
.pool
= pool
- 0x8000000000000000ull
;
341 p
= _key_decode_u32(p
, &hash
);
343 oid
->hobj
.set_bitwise_key_u32(hash
);
345 r
= decode_escaped(p
, &oid
->hobj
.nspace
);
351 r
= decode_escaped(p
, &k
);
358 oid
->hobj
.oid
.name
= k
;
359 } else if (*p
== '<' || *p
== '>') {
362 r
= decode_escaped(p
, &oid
->hobj
.oid
.name
);
366 oid
->hobj
.set_key(k
);
372 p
= _key_decode_u64(p
, &oid
->hobj
.snap
.val
);
373 p
= _key_decode_u64(p
, &oid
->generation
);
375 if (*p
!= ONODE_KEY_SUFFIX
) {
380 // if we get something other than a null terminator here,
381 // something goes wrong.
389 static void get_object_key(CephContext
*cct
, const ghobject_t
& oid
, S
*key
)
393 size_t max_len
= 1 + 8 + 4 +
394 (oid
.hobj
.nspace
.length() * 3 + 1) +
395 (oid
.hobj
.get_key().length() * 3 + 1) +
396 1 + // for '<', '=', or '>'
397 (oid
.hobj
.oid
.name
.length() * 3 + 1) +
399 key
->reserve(max_len
);
401 _key_encode_shard(oid
.shard_id
, key
);
402 _key_encode_u64(oid
.hobj
.pool
+ 0x8000000000000000ull
, key
);
403 _key_encode_u32(oid
.hobj
.get_bitwise_key_u32(), key
);
405 append_escaped(oid
.hobj
.nspace
, key
);
407 if (oid
.hobj
.get_key().length()) {
408 // is a key... could be < = or >.
409 append_escaped(oid
.hobj
.get_key(), key
);
410 // (ASCII chars < = and > sort in that order, yay)
411 int r
= oid
.hobj
.get_key().compare(oid
.hobj
.oid
.name
);
413 key
->append(r
> 0 ? ">" : "<");
414 append_escaped(oid
.hobj
.oid
.name
, key
);
421 append_escaped(oid
.hobj
.oid
.name
, key
);
425 _key_encode_u64(oid
.hobj
.snap
, key
);
426 _key_encode_u64(oid
.generation
, key
);
428 key
->push_back(ONODE_KEY_SUFFIX
);
433 int r
= get_key_object(*key
, &t
);
435 derr
<< " r " << r
<< dendl
;
436 derr
<< "key " << pretty_binary_string(*key
) << dendl
;
437 derr
<< "oid " << oid
<< dendl
;
438 derr
<< " t " << t
<< dendl
;
439 assert(r
== 0 && t
== oid
);
445 // extent shard keys are the onode key, plus a u32, plus 'x'. the trailing
446 // char lets us quickly test whether it is a shard key without decoding any
447 // of the prefix bytes.
449 static void get_extent_shard_key(const S
& onode_key
, uint32_t offset
,
453 key
->reserve(onode_key
.length() + 4 + 1);
454 key
->append(onode_key
.c_str(), onode_key
.size());
455 _key_encode_u32(offset
, key
);
456 key
->push_back(EXTENT_SHARD_KEY_SUFFIX
);
459 static void rewrite_extent_shard_key(uint32_t offset
, string
*key
)
461 assert(key
->size() > sizeof(uint32_t) + 1);
462 assert(*key
->rbegin() == EXTENT_SHARD_KEY_SUFFIX
);
463 _key_encode_u32(offset
, key
->size() - sizeof(uint32_t) - 1, key
);
467 static void generate_extent_shard_key_and_apply(
471 std::function
<void(const string
& final_key
)> apply
)
473 if (key
->empty()) { // make full key
474 assert(!onode_key
.empty());
475 get_extent_shard_key(onode_key
, offset
, key
);
477 rewrite_extent_shard_key(offset
, key
);
482 int get_key_extent_shard(const string
& key
, string
*onode_key
, uint32_t *offset
)
484 assert(key
.size() > sizeof(uint32_t) + 1);
485 assert(*key
.rbegin() == EXTENT_SHARD_KEY_SUFFIX
);
486 int okey_len
= key
.size() - sizeof(uint32_t) - 1;
487 *onode_key
= key
.substr(0, okey_len
);
488 const char *p
= key
.data() + okey_len
;
489 _key_decode_u32(p
, offset
);
493 static bool is_extent_shard_key(const string
& key
)
495 return *key
.rbegin() == EXTENT_SHARD_KEY_SUFFIX
;
499 static void get_omap_header(uint64_t id
, string
*out
)
501 _key_encode_u64(id
, out
);
505 // hmm, I don't think there's any need to escape the user key since we
506 // have a clean prefix.
507 static void get_omap_key(uint64_t id
, const string
& key
, string
*out
)
509 _key_encode_u64(id
, out
);
514 static void rewrite_omap_key(uint64_t id
, string old
, string
*out
)
516 _key_encode_u64(id
, out
);
517 out
->append(old
.c_str() + out
->length(), old
.size() - out
->length());
520 static void decode_omap_key(const string
& key
, string
*user_key
)
522 *user_key
= key
.substr(sizeof(uint64_t) + 1);
525 static void get_omap_tail(uint64_t id
, string
*out
)
527 _key_encode_u64(id
, out
);
531 static void get_deferred_key(uint64_t seq
, string
*out
)
533 _key_encode_u64(seq
, out
);
539 struct Int64ArrayMergeOperator
: public KeyValueDB::MergeOperator
{
540 void merge_nonexistent(
541 const char *rdata
, size_t rlen
, std::string
*new_value
) override
{
542 *new_value
= std::string(rdata
, rlen
);
545 const char *ldata
, size_t llen
,
546 const char *rdata
, size_t rlen
,
547 std::string
*new_value
) override
{
548 assert(llen
== rlen
);
549 assert((rlen
% 8) == 0);
550 new_value
->resize(rlen
);
551 const __le64
* lv
= (const __le64
*)ldata
;
552 const __le64
* rv
= (const __le64
*)rdata
;
553 __le64
* nv
= &(__le64
&)new_value
->at(0);
554 for (size_t i
= 0; i
< rlen
>> 3; ++i
) {
555 nv
[i
] = lv
[i
] + rv
[i
];
558 // We use each operator name and each prefix to construct the
559 // overall RocksDB operator name for consistency check at open time.
560 const char *name() const override
{
561 return "int64_array";
568 ostream
& operator<<(ostream
& out
, const BlueStore::Buffer
& b
)
570 out
<< "buffer(" << &b
<< " space " << b
.space
<< " 0x" << std::hex
571 << b
.offset
<< "~" << b
.length
<< std::dec
572 << " " << BlueStore::Buffer::get_state_name(b
.state
);
574 out
<< " " << BlueStore::Buffer::get_flag_name(b
.flags
);
580 void BlueStore::GarbageCollector::process_protrusive_extents(
581 const BlueStore::ExtentMap
& extent_map
,
582 uint64_t start_offset
,
584 uint64_t start_touch_offset
,
585 uint64_t end_touch_offset
,
586 uint64_t min_alloc_size
)
588 assert(start_offset
<= start_touch_offset
&& end_offset
>= end_touch_offset
);
590 uint64_t lookup_start_offset
= P2ALIGN(start_offset
, min_alloc_size
);
591 uint64_t lookup_end_offset
= ROUND_UP_TO(end_offset
, min_alloc_size
);
593 dout(30) << __func__
<< " (hex): [" << std::hex
594 << lookup_start_offset
<< ", " << lookup_end_offset
595 << ")" << std::dec
<< dendl
;
597 for (auto it
= extent_map
.seek_lextent(lookup_start_offset
);
598 it
!= extent_map
.extent_map
.end() &&
599 it
->logical_offset
< lookup_end_offset
;
601 uint64_t alloc_unit_start
= it
->logical_offset
/ min_alloc_size
;
602 uint64_t alloc_unit_end
= (it
->logical_end() - 1) / min_alloc_size
;
604 dout(30) << __func__
<< " " << *it
605 << "alloc_units: " << alloc_unit_start
<< ".." << alloc_unit_end
608 Blob
* b
= it
->blob
.get();
610 if (it
->logical_offset
>=start_touch_offset
&&
611 it
->logical_end() <= end_touch_offset
) {
612 // Process extents within the range affected by
613 // the current write request.
614 // Need to take into account if existing extents
615 // can be merged with them (uncompressed case)
616 if (!b
->get_blob().is_compressed()) {
617 if (blob_info_counted
&& used_alloc_unit
== alloc_unit_start
) {
618 --blob_info_counted
->expected_allocations
; // don't need to allocate
619 // new AU for compressed
620 // data since another
621 // collocated uncompressed
622 // blob already exists
623 dout(30) << __func__
<< " --expected:"
624 << alloc_unit_start
<< dendl
;
626 used_alloc_unit
= alloc_unit_end
;
627 blob_info_counted
= nullptr;
629 } else if (b
->get_blob().is_compressed()) {
631 // additionally we take compressed blobs that were not impacted
632 // by the write into account too
634 affected_blobs
.emplace(
635 b
, BlobInfo(b
->get_referenced_bytes())).first
->second
;
638 (used_alloc_unit
&& used_alloc_unit
== alloc_unit_start
) ? 0 : 1;
639 bi
.expected_allocations
+= alloc_unit_end
- alloc_unit_start
+ adjust
;
640 dout(30) << __func__
<< " expected_allocations="
641 << bi
.expected_allocations
<< " end_au:"
642 << alloc_unit_end
<< dendl
;
644 blob_info_counted
= &bi
;
645 used_alloc_unit
= alloc_unit_end
;
647 assert(it
->length
<= bi
.referenced_bytes
);
648 bi
.referenced_bytes
-= it
->length
;
649 dout(30) << __func__
<< " affected_blob:" << *b
650 << " unref 0x" << std::hex
<< it
->length
651 << " referenced = 0x" << bi
.referenced_bytes
652 << std::dec
<< dendl
;
653 // NOTE: we can't move specific blob to resulting GC list here
654 // when reference counter == 0 since subsequent extents might
655 // decrement its expected_allocation.
656 // Hence need to enumerate all the extents first.
657 if (!bi
.collect_candidate
) {
658 bi
.first_lextent
= it
;
659 bi
.collect_candidate
= true;
661 bi
.last_lextent
= it
;
663 if (blob_info_counted
&& used_alloc_unit
== alloc_unit_start
) {
664 // don't need to allocate new AU for compressed data since another
665 // collocated uncompressed blob already exists
666 --blob_info_counted
->expected_allocations
;
667 dout(30) << __func__
<< " --expected_allocations:"
668 << alloc_unit_start
<< dendl
;
670 used_alloc_unit
= alloc_unit_end
;
671 blob_info_counted
= nullptr;
675 for (auto b_it
= affected_blobs
.begin();
676 b_it
!= affected_blobs
.end();
678 Blob
* b
= b_it
->first
;
679 BlobInfo
& bi
= b_it
->second
;
680 if (bi
.referenced_bytes
== 0) {
681 uint64_t len_on_disk
= b_it
->first
->get_blob().get_ondisk_length();
682 int64_t blob_expected_for_release
=
683 ROUND_UP_TO(len_on_disk
, min_alloc_size
) / min_alloc_size
;
685 dout(30) << __func__
<< " " << *(b_it
->first
)
686 << " expected4release=" << blob_expected_for_release
687 << " expected_allocations=" << bi
.expected_allocations
689 int64_t benefit
= blob_expected_for_release
- bi
.expected_allocations
;
690 if (benefit
>= g_conf
->bluestore_gc_enable_blob_threshold
) {
691 if (bi
.collect_candidate
) {
692 auto it
= bi
.first_lextent
;
695 if (it
->blob
.get() == b
) {
696 extents_to_collect
.emplace_back(it
->logical_offset
, it
->length
);
698 bExit
= it
== bi
.last_lextent
;
702 expected_for_release
+= blob_expected_for_release
;
703 expected_allocations
+= bi
.expected_allocations
;
709 int64_t BlueStore::GarbageCollector::estimate(
710 uint64_t start_offset
,
712 const BlueStore::ExtentMap
& extent_map
,
713 const BlueStore::old_extent_map_t
& old_extents
,
714 uint64_t min_alloc_size
)
717 affected_blobs
.clear();
718 extents_to_collect
.clear();
719 used_alloc_unit
= boost::optional
<uint64_t >();
720 blob_info_counted
= nullptr;
722 gc_start_offset
= start_offset
;
723 gc_end_offset
= start_offset
+ length
;
725 uint64_t end_offset
= start_offset
+ length
;
727 for (auto it
= old_extents
.begin(); it
!= old_extents
.end(); ++it
) {
728 Blob
* b
= it
->e
.blob
.get();
729 if (b
->get_blob().is_compressed()) {
731 // update gc_start_offset/gc_end_offset if needed
732 gc_start_offset
= min(gc_start_offset
, (uint64_t)it
->e
.blob_start());
733 gc_end_offset
= max(gc_end_offset
, (uint64_t)it
->e
.blob_end());
735 auto o
= it
->e
.logical_offset
;
736 auto l
= it
->e
.length
;
738 uint64_t ref_bytes
= b
->get_referenced_bytes();
739 // micro optimization to bypass blobs that have no more references
740 if (ref_bytes
!= 0) {
741 dout(30) << __func__
<< " affected_blob:" << *b
742 << " unref 0x" << std::hex
<< o
<< "~" << l
743 << std::dec
<< dendl
;
744 affected_blobs
.emplace(b
, BlobInfo(ref_bytes
));
748 dout(30) << __func__
<< " gc range(hex): [" << std::hex
749 << gc_start_offset
<< ", " << gc_end_offset
750 << ")" << std::dec
<< dendl
;
752 // enumerate preceeding extents to check if they reference affected blobs
753 if (gc_start_offset
< start_offset
|| gc_end_offset
> end_offset
) {
754 process_protrusive_extents(extent_map
,
761 return expected_for_release
- expected_allocations
;
766 BlueStore::Cache
*BlueStore::Cache::create(CephContext
* cct
, string type
,
767 PerfCounters
*logger
)
772 c
= new LRUCache(cct
);
773 else if (type
== "2q")
774 c
= new TwoQCache(cct
);
776 assert(0 == "unrecognized cache type");
782 void BlueStore::Cache::trim(uint64_t onode_max
, uint64_t buffer_max
)
784 std::lock_guard
<std::recursive_mutex
> l(lock
);
785 _trim(onode_max
, buffer_max
);
788 void BlueStore::Cache::trim_all()
790 std::lock_guard
<std::recursive_mutex
> l(lock
);
796 #define dout_prefix *_dout << "bluestore.LRUCache(" << this << ") "
798 void BlueStore::LRUCache::_touch_onode(OnodeRef
& o
)
800 auto p
= onode_lru
.iterator_to(*o
);
802 onode_lru
.push_front(*o
);
805 void BlueStore::LRUCache::_trim(uint64_t onode_max
, uint64_t buffer_max
)
807 dout(20) << __func__
<< " onodes " << onode_lru
.size() << " / " << onode_max
808 << " buffers " << buffer_size
<< " / " << buffer_max
811 _audit("trim start");
814 while (buffer_size
> buffer_max
) {
815 auto i
= buffer_lru
.rbegin();
816 if (i
== buffer_lru
.rend()) {
817 // stop if buffer_lru is now empty
822 assert(b
->is_clean());
823 dout(20) << __func__
<< " rm " << *b
<< dendl
;
824 b
->space
->_rm_buffer(this, b
);
828 if (onode_max
>= onode_lru
.size()) {
829 return; // don't even try
831 uint64_t num
= onode_lru
.size() - onode_max
;
833 auto p
= onode_lru
.end();
834 assert(p
!= onode_lru
.begin());
837 int max_skipped
= g_conf
->bluestore_cache_trim_max_skip_pinned
;
840 int refs
= o
->nref
.load();
842 dout(20) << __func__
<< " " << o
->oid
<< " has " << refs
843 << " refs, skipping" << dendl
;
844 if (++skipped
>= max_skipped
) {
845 dout(20) << __func__
<< " maximum skip pinned reached; stopping with "
846 << num
<< " left to trim" << dendl
;
850 if (p
== onode_lru
.begin()) {
858 dout(30) << __func__
<< " rm " << o
->oid
<< dendl
;
859 if (p
!= onode_lru
.begin()) {
860 onode_lru
.erase(p
--);
865 o
->get(); // paranoia
866 o
->c
->onode_map
.remove(o
->oid
);
873 void BlueStore::LRUCache::_audit(const char *when
)
875 dout(10) << __func__
<< " " << when
<< " start" << dendl
;
877 for (auto i
= buffer_lru
.begin(); i
!= buffer_lru
.end(); ++i
) {
880 if (s
!= buffer_size
) {
881 derr
<< __func__
<< " buffer_size " << buffer_size
<< " actual " << s
883 for (auto i
= buffer_lru
.begin(); i
!= buffer_lru
.end(); ++i
) {
884 derr
<< __func__
<< " " << *i
<< dendl
;
886 assert(s
== buffer_size
);
888 dout(20) << __func__
<< " " << when
<< " buffer_size " << buffer_size
895 #define dout_prefix *_dout << "bluestore.2QCache(" << this << ") "
898 void BlueStore::TwoQCache::_touch_onode(OnodeRef
& o
)
900 auto p
= onode_lru
.iterator_to(*o
);
902 onode_lru
.push_front(*o
);
905 void BlueStore::TwoQCache::_add_buffer(Buffer
*b
, int level
, Buffer
*near
)
907 dout(20) << __func__
<< " level " << level
<< " near " << near
909 << " which has cache_private " << b
->cache_private
<< dendl
;
911 b
->cache_private
= near
->cache_private
;
912 switch (b
->cache_private
) {
914 buffer_warm_in
.insert(buffer_warm_in
.iterator_to(*near
), *b
);
916 case BUFFER_WARM_OUT
:
917 assert(b
->is_empty());
918 buffer_warm_out
.insert(buffer_warm_out
.iterator_to(*near
), *b
);
921 buffer_hot
.insert(buffer_hot
.iterator_to(*near
), *b
);
924 assert(0 == "bad cache_private");
926 } else if (b
->cache_private
== BUFFER_NEW
) {
927 b
->cache_private
= BUFFER_WARM_IN
;
929 buffer_warm_in
.push_front(*b
);
931 // take caller hint to start at the back of the warm queue
932 buffer_warm_in
.push_back(*b
);
935 // we got a hint from discard
936 switch (b
->cache_private
) {
938 // stay in warm_in. move to front, even though 2Q doesn't actually
940 dout(20) << __func__
<< " move to front of warm " << *b
<< dendl
;
941 buffer_warm_in
.push_front(*b
);
943 case BUFFER_WARM_OUT
:
944 b
->cache_private
= BUFFER_HOT
;
945 // move to hot. fall-thru
947 dout(20) << __func__
<< " move to front of hot " << *b
<< dendl
;
948 buffer_hot
.push_front(*b
);
951 assert(0 == "bad cache_private");
954 if (!b
->is_empty()) {
955 buffer_bytes
+= b
->length
;
956 buffer_list_bytes
[b
->cache_private
] += b
->length
;
960 void BlueStore::TwoQCache::_rm_buffer(Buffer
*b
)
962 dout(20) << __func__
<< " " << *b
<< dendl
;
963 if (!b
->is_empty()) {
964 assert(buffer_bytes
>= b
->length
);
965 buffer_bytes
-= b
->length
;
966 assert(buffer_list_bytes
[b
->cache_private
] >= b
->length
);
967 buffer_list_bytes
[b
->cache_private
] -= b
->length
;
969 switch (b
->cache_private
) {
971 buffer_warm_in
.erase(buffer_warm_in
.iterator_to(*b
));
973 case BUFFER_WARM_OUT
:
974 buffer_warm_out
.erase(buffer_warm_out
.iterator_to(*b
));
977 buffer_hot
.erase(buffer_hot
.iterator_to(*b
));
980 assert(0 == "bad cache_private");
984 void BlueStore::TwoQCache::_move_buffer(Cache
*srcc
, Buffer
*b
)
986 TwoQCache
*src
= static_cast<TwoQCache
*>(srcc
);
989 // preserve which list we're on (even if we can't preserve the order!)
990 switch (b
->cache_private
) {
992 assert(!b
->is_empty());
993 buffer_warm_in
.push_back(*b
);
995 case BUFFER_WARM_OUT
:
996 assert(b
->is_empty());
997 buffer_warm_out
.push_back(*b
);
1000 assert(!b
->is_empty());
1001 buffer_hot
.push_back(*b
);
1004 assert(0 == "bad cache_private");
1006 if (!b
->is_empty()) {
1007 buffer_bytes
+= b
->length
;
1008 buffer_list_bytes
[b
->cache_private
] += b
->length
;
1012 void BlueStore::TwoQCache::_adjust_buffer_size(Buffer
*b
, int64_t delta
)
1014 dout(20) << __func__
<< " delta " << delta
<< " on " << *b
<< dendl
;
1015 if (!b
->is_empty()) {
1016 assert((int64_t)buffer_bytes
+ delta
>= 0);
1017 buffer_bytes
+= delta
;
1018 assert((int64_t)buffer_list_bytes
[b
->cache_private
] + delta
>= 0);
1019 buffer_list_bytes
[b
->cache_private
] += delta
;
1023 void BlueStore::TwoQCache::_trim(uint64_t onode_max
, uint64_t buffer_max
)
1025 dout(20) << __func__
<< " onodes " << onode_lru
.size() << " / " << onode_max
1026 << " buffers " << buffer_bytes
<< " / " << buffer_max
1029 _audit("trim start");
1032 if (buffer_bytes
> buffer_max
) {
1033 uint64_t kin
= buffer_max
* cct
->_conf
->bluestore_2q_cache_kin_ratio
;
1034 uint64_t khot
= buffer_max
- kin
;
1036 // pre-calculate kout based on average buffer size too,
1037 // which is typical(the warm_in and hot lists may change later)
1039 uint64_t buffer_num
= buffer_hot
.size() + buffer_warm_in
.size();
1041 uint64_t buffer_avg_size
= buffer_bytes
/ buffer_num
;
1042 assert(buffer_avg_size
);
1043 uint64_t calculated_buffer_num
= buffer_max
/ buffer_avg_size
;
1044 kout
= calculated_buffer_num
* cct
->_conf
->bluestore_2q_cache_kout_ratio
;
1047 if (buffer_list_bytes
[BUFFER_HOT
] < khot
) {
1048 // hot is small, give slack to warm_in
1049 kin
+= khot
- buffer_list_bytes
[BUFFER_HOT
];
1050 } else if (buffer_list_bytes
[BUFFER_WARM_IN
] < kin
) {
1051 // warm_in is small, give slack to hot
1052 khot
+= kin
- buffer_list_bytes
[BUFFER_WARM_IN
];
1055 // adjust warm_in list
1056 int64_t to_evict_bytes
= buffer_list_bytes
[BUFFER_WARM_IN
] - kin
;
1057 uint64_t evicted
= 0;
1059 while (to_evict_bytes
> 0) {
1060 auto p
= buffer_warm_in
.rbegin();
1061 if (p
== buffer_warm_in
.rend()) {
1062 // stop if warm_in list is now empty
1067 assert(b
->is_clean());
1068 dout(20) << __func__
<< " buffer_warm_in -> out " << *b
<< dendl
;
1069 assert(buffer_bytes
>= b
->length
);
1070 buffer_bytes
-= b
->length
;
1071 assert(buffer_list_bytes
[BUFFER_WARM_IN
] >= b
->length
);
1072 buffer_list_bytes
[BUFFER_WARM_IN
] -= b
->length
;
1073 to_evict_bytes
-= b
->length
;
1074 evicted
+= b
->length
;
1075 b
->state
= Buffer::STATE_EMPTY
;
1077 buffer_warm_in
.erase(buffer_warm_in
.iterator_to(*b
));
1078 buffer_warm_out
.push_front(*b
);
1079 b
->cache_private
= BUFFER_WARM_OUT
;
1083 dout(20) << __func__
<< " evicted " << byte_u_t(evicted
)
1084 << " from warm_in list, done evicting warm_in buffers"
1089 to_evict_bytes
= buffer_list_bytes
[BUFFER_HOT
] - khot
;
1092 while (to_evict_bytes
> 0) {
1093 auto p
= buffer_hot
.rbegin();
1094 if (p
== buffer_hot
.rend()) {
1095 // stop if hot list is now empty
1100 dout(20) << __func__
<< " buffer_hot rm " << *b
<< dendl
;
1101 assert(b
->is_clean());
1102 // adjust evict size before buffer goes invalid
1103 to_evict_bytes
-= b
->length
;
1104 evicted
+= b
->length
;
1105 b
->space
->_rm_buffer(this, b
);
1109 dout(20) << __func__
<< " evicted " << byte_u_t(evicted
)
1110 << " from hot list, done evicting hot buffers"
1114 // adjust warm out list too, if necessary
1115 int64_t num
= buffer_warm_out
.size() - kout
;
1117 Buffer
*b
= &*buffer_warm_out
.rbegin();
1118 assert(b
->is_empty());
1119 dout(20) << __func__
<< " buffer_warm_out rm " << *b
<< dendl
;
1120 b
->space
->_rm_buffer(this, b
);
1125 if (onode_max
>= onode_lru
.size()) {
1126 return; // don't even try
1128 uint64_t num
= onode_lru
.size() - onode_max
;
1130 auto p
= onode_lru
.end();
1131 assert(p
!= onode_lru
.begin());
1134 int max_skipped
= g_conf
->bluestore_cache_trim_max_skip_pinned
;
1137 dout(20) << __func__
<< " considering " << o
<< dendl
;
1138 int refs
= o
->nref
.load();
1140 dout(20) << __func__
<< " " << o
->oid
<< " has " << refs
1141 << " refs; skipping" << dendl
;
1142 if (++skipped
>= max_skipped
) {
1143 dout(20) << __func__
<< " maximum skip pinned reached; stopping with "
1144 << num
<< " left to trim" << dendl
;
1148 if (p
== onode_lru
.begin()) {
1156 dout(30) << __func__
<< " " << o
->oid
<< " num=" << num
<<" lru size="<<onode_lru
.size()<< dendl
;
1157 if (p
!= onode_lru
.begin()) {
1158 onode_lru
.erase(p
--);
1163 o
->get(); // paranoia
1164 o
->c
->onode_map
.remove(o
->oid
);
1171 void BlueStore::TwoQCache::_audit(const char *when
)
1173 dout(10) << __func__
<< " " << when
<< " start" << dendl
;
1175 for (auto i
= buffer_hot
.begin(); i
!= buffer_hot
.end(); ++i
) {
1179 uint64_t hot_bytes
= s
;
1180 if (hot_bytes
!= buffer_list_bytes
[BUFFER_HOT
]) {
1181 derr
<< __func__
<< " hot_list_bytes "
1182 << buffer_list_bytes
[BUFFER_HOT
]
1183 << " != actual " << hot_bytes
1185 assert(hot_bytes
== buffer_list_bytes
[BUFFER_HOT
]);
1188 for (auto i
= buffer_warm_in
.begin(); i
!= buffer_warm_in
.end(); ++i
) {
1192 uint64_t warm_in_bytes
= s
- hot_bytes
;
1193 if (warm_in_bytes
!= buffer_list_bytes
[BUFFER_WARM_IN
]) {
1194 derr
<< __func__
<< " warm_in_list_bytes "
1195 << buffer_list_bytes
[BUFFER_WARM_IN
]
1196 << " != actual " << warm_in_bytes
1198 assert(warm_in_bytes
== buffer_list_bytes
[BUFFER_WARM_IN
]);
1201 if (s
!= buffer_bytes
) {
1202 derr
<< __func__
<< " buffer_bytes " << buffer_bytes
<< " actual " << s
1204 assert(s
== buffer_bytes
);
1207 dout(20) << __func__
<< " " << when
<< " buffer_bytes " << buffer_bytes
1216 #define dout_prefix *_dout << "bluestore.BufferSpace(" << this << " in " << cache << ") "
1218 void BlueStore::BufferSpace::_clear(Cache
* cache
)
1220 // note: we already hold cache->lock
1221 ldout(cache
->cct
, 20) << __func__
<< dendl
;
1222 while (!buffer_map
.empty()) {
1223 _rm_buffer(cache
, buffer_map
.begin());
1227 int BlueStore::BufferSpace::_discard(Cache
* cache
, uint32_t offset
, uint32_t length
)
1229 // note: we already hold cache->lock
1230 ldout(cache
->cct
, 20) << __func__
<< std::hex
<< " 0x" << offset
<< "~" << length
1231 << std::dec
<< dendl
;
1232 int cache_private
= 0;
1233 cache
->_audit("discard start");
1234 auto i
= _data_lower_bound(offset
);
1235 uint32_t end
= offset
+ length
;
1236 while (i
!= buffer_map
.end()) {
1237 Buffer
*b
= i
->second
.get();
1238 if (b
->offset
>= end
) {
1241 if (b
->cache_private
> cache_private
) {
1242 cache_private
= b
->cache_private
;
1244 if (b
->offset
< offset
) {
1245 int64_t front
= offset
- b
->offset
;
1246 if (b
->end() > end
) {
1247 // drop middle (split)
1248 uint32_t tail
= b
->end() - end
;
1249 if (b
->data
.length()) {
1251 bl
.substr_of(b
->data
, b
->length
- tail
, tail
);
1252 Buffer
*nb
= new Buffer(this, b
->state
, b
->seq
, end
, bl
);
1253 nb
->maybe_rebuild();
1254 _add_buffer(cache
, nb
, 0, b
);
1256 _add_buffer(cache
, new Buffer(this, b
->state
, b
->seq
, end
, tail
),
1259 if (!b
->is_writing()) {
1260 cache
->_adjust_buffer_size(b
, front
- (int64_t)b
->length
);
1264 cache
->_audit("discard end 1");
1268 if (!b
->is_writing()) {
1269 cache
->_adjust_buffer_size(b
, front
- (int64_t)b
->length
);
1277 if (b
->end() <= end
) {
1278 // drop entire buffer
1279 _rm_buffer(cache
, i
++);
1283 uint32_t keep
= b
->end() - end
;
1284 if (b
->data
.length()) {
1286 bl
.substr_of(b
->data
, b
->length
- keep
, keep
);
1287 Buffer
*nb
= new Buffer(this, b
->state
, b
->seq
, end
, bl
);
1288 nb
->maybe_rebuild();
1289 _add_buffer(cache
, nb
, 0, b
);
1291 _add_buffer(cache
, new Buffer(this, b
->state
, b
->seq
, end
, keep
), 0, b
);
1293 _rm_buffer(cache
, i
);
1294 cache
->_audit("discard end 2");
1297 return cache_private
;
1300 void BlueStore::BufferSpace::read(
1304 BlueStore::ready_regions_t
& res
,
1305 interval_set
<uint32_t>& res_intervals
,
1309 res_intervals
.clear();
1310 uint32_t want_bytes
= length
;
1311 uint32_t end
= offset
+ length
;
1314 std::lock_guard
<std::recursive_mutex
> l(cache
->lock
);
1315 for (auto i
= _data_lower_bound(offset
);
1316 i
!= buffer_map
.end() && offset
< end
&& i
->first
< end
;
1318 Buffer
*b
= i
->second
.get();
1319 assert(b
->end() > offset
);
1322 if (flags
& BYPASS_CLEAN_CACHE
)
1323 val
= b
->is_writing();
1325 val
= b
->is_writing() || b
->is_clean();
1327 if (b
->offset
< offset
) {
1328 uint32_t skip
= offset
- b
->offset
;
1329 uint32_t l
= MIN(length
, b
->length
- skip
);
1330 res
[offset
].substr_of(b
->data
, skip
, l
);
1331 res_intervals
.insert(offset
, l
);
1334 if (!b
->is_writing()) {
1335 cache
->_touch_buffer(b
);
1339 if (b
->offset
> offset
) {
1340 uint32_t gap
= b
->offset
- offset
;
1341 if (length
<= gap
) {
1347 if (!b
->is_writing()) {
1348 cache
->_touch_buffer(b
);
1350 if (b
->length
> length
) {
1351 res
[offset
].substr_of(b
->data
, 0, length
);
1352 res_intervals
.insert(offset
, length
);
1355 res
[offset
].append(b
->data
);
1356 res_intervals
.insert(offset
, b
->length
);
1357 if (b
->length
== length
)
1359 offset
+= b
->length
;
1360 length
-= b
->length
;
1366 uint64_t hit_bytes
= res_intervals
.size();
1367 assert(hit_bytes
<= want_bytes
);
1368 uint64_t miss_bytes
= want_bytes
- hit_bytes
;
1369 cache
->logger
->inc(l_bluestore_buffer_hit_bytes
, hit_bytes
);
1370 cache
->logger
->inc(l_bluestore_buffer_miss_bytes
, miss_bytes
);
1373 void BlueStore::BufferSpace::finish_write(Cache
* cache
, uint64_t seq
)
1375 std::lock_guard
<std::recursive_mutex
> l(cache
->lock
);
1377 auto i
= writing
.begin();
1378 while (i
!= writing
.end()) {
1388 assert(b
->is_writing());
1390 if (b
->flags
& Buffer::FLAG_NOCACHE
) {
1392 ldout(cache
->cct
, 20) << __func__
<< " discard " << *b
<< dendl
;
1393 buffer_map
.erase(b
->offset
);
1395 b
->state
= Buffer::STATE_CLEAN
;
1398 b
->data
.reassign_to_mempool(mempool::mempool_bluestore_cache_data
);
1399 cache
->_add_buffer(b
, 1, nullptr);
1400 ldout(cache
->cct
, 20) << __func__
<< " added " << *b
<< dendl
;
1404 cache
->_audit("finish_write end");
1407 void BlueStore::BufferSpace::split(Cache
* cache
, size_t pos
, BlueStore::BufferSpace
&r
)
1409 std::lock_guard
<std::recursive_mutex
> lk(cache
->lock
);
1410 if (buffer_map
.empty())
1413 auto p
= --buffer_map
.end();
1415 if (p
->second
->end() <= pos
)
1418 if (p
->second
->offset
< pos
) {
1419 ldout(cache
->cct
, 30) << __func__
<< " cut " << *p
->second
<< dendl
;
1420 size_t left
= pos
- p
->second
->offset
;
1421 size_t right
= p
->second
->length
- left
;
1422 if (p
->second
->data
.length()) {
1424 bl
.substr_of(p
->second
->data
, left
, right
);
1425 r
._add_buffer(cache
, new Buffer(&r
, p
->second
->state
, p
->second
->seq
, 0, bl
),
1426 0, p
->second
.get());
1428 r
._add_buffer(cache
, new Buffer(&r
, p
->second
->state
, p
->second
->seq
, 0, right
),
1429 0, p
->second
.get());
1431 cache
->_adjust_buffer_size(p
->second
.get(), -right
);
1432 p
->second
->truncate(left
);
1436 assert(p
->second
->end() > pos
);
1437 ldout(cache
->cct
, 30) << __func__
<< " move " << *p
->second
<< dendl
;
1438 if (p
->second
->data
.length()) {
1439 r
._add_buffer(cache
, new Buffer(&r
, p
->second
->state
, p
->second
->seq
,
1440 p
->second
->offset
- pos
, p
->second
->data
),
1441 0, p
->second
.get());
1443 r
._add_buffer(cache
, new Buffer(&r
, p
->second
->state
, p
->second
->seq
,
1444 p
->second
->offset
- pos
, p
->second
->length
),
1445 0, p
->second
.get());
1447 if (p
== buffer_map
.begin()) {
1448 _rm_buffer(cache
, p
);
1451 _rm_buffer(cache
, p
--);
1454 assert(writing
.empty());
1460 #define dout_prefix *_dout << "bluestore.OnodeSpace(" << this << " in " << cache << ") "
1462 BlueStore::OnodeRef
BlueStore::OnodeSpace::add(const ghobject_t
& oid
, OnodeRef o
)
1464 std::lock_guard
<std::recursive_mutex
> l(cache
->lock
);
1465 auto p
= onode_map
.find(oid
);
1466 if (p
!= onode_map
.end()) {
1467 ldout(cache
->cct
, 30) << __func__
<< " " << oid
<< " " << o
1468 << " raced, returning existing " << p
->second
1472 ldout(cache
->cct
, 30) << __func__
<< " " << oid
<< " " << o
<< dendl
;
1474 cache
->_add_onode(o
, 1);
1478 BlueStore::OnodeRef
BlueStore::OnodeSpace::lookup(const ghobject_t
& oid
)
1480 ldout(cache
->cct
, 30) << __func__
<< dendl
;
1485 std::lock_guard
<std::recursive_mutex
> l(cache
->lock
);
1486 ceph::unordered_map
<ghobject_t
,OnodeRef
>::iterator p
= onode_map
.find(oid
);
1487 if (p
== onode_map
.end()) {
1488 ldout(cache
->cct
, 30) << __func__
<< " " << oid
<< " miss" << dendl
;
1490 ldout(cache
->cct
, 30) << __func__
<< " " << oid
<< " hit " << p
->second
1492 cache
->_touch_onode(p
->second
);
1499 cache
->logger
->inc(l_bluestore_onode_hits
);
1501 cache
->logger
->inc(l_bluestore_onode_misses
);
1506 void BlueStore::OnodeSpace::clear()
1508 std::lock_guard
<std::recursive_mutex
> l(cache
->lock
);
1509 ldout(cache
->cct
, 10) << __func__
<< dendl
;
1510 for (auto &p
: onode_map
) {
1511 cache
->_rm_onode(p
.second
);
1516 bool BlueStore::OnodeSpace::empty()
1518 std::lock_guard
<std::recursive_mutex
> l(cache
->lock
);
1519 return onode_map
.empty();
1522 void BlueStore::OnodeSpace::rename(
1524 const ghobject_t
& old_oid
,
1525 const ghobject_t
& new_oid
,
1526 const mempool::bluestore_cache_other::string
& new_okey
)
1528 std::lock_guard
<std::recursive_mutex
> l(cache
->lock
);
1529 ldout(cache
->cct
, 30) << __func__
<< " " << old_oid
<< " -> " << new_oid
1531 ceph::unordered_map
<ghobject_t
,OnodeRef
>::iterator po
, pn
;
1532 po
= onode_map
.find(old_oid
);
1533 pn
= onode_map
.find(new_oid
);
1536 assert(po
!= onode_map
.end());
1537 if (pn
!= onode_map
.end()) {
1538 ldout(cache
->cct
, 30) << __func__
<< " removing target " << pn
->second
1540 cache
->_rm_onode(pn
->second
);
1541 onode_map
.erase(pn
);
1543 OnodeRef o
= po
->second
;
1545 // install a non-existent onode at old location
1546 oldo
.reset(new Onode(o
->c
, old_oid
, o
->key
));
1548 cache
->_add_onode(po
->second
, 1);
1550 // add at new position and fix oid, key
1551 onode_map
.insert(make_pair(new_oid
, o
));
1552 cache
->_touch_onode(o
);
1557 bool BlueStore::OnodeSpace::map_any(std::function
<bool(OnodeRef
)> f
)
1559 std::lock_guard
<std::recursive_mutex
> l(cache
->lock
);
1560 ldout(cache
->cct
, 20) << __func__
<< dendl
;
1561 for (auto& i
: onode_map
) {
1569 void BlueStore::OnodeSpace::dump(CephContext
*cct
, int lvl
)
1571 for (auto& i
: onode_map
) {
1572 ldout(cct
, lvl
) << i
.first
<< " : " << i
.second
<< dendl
;
1579 #define dout_prefix *_dout << "bluestore.sharedblob(" << this << ") "
1581 ostream
& operator<<(ostream
& out
, const BlueStore::SharedBlob
& sb
)
1583 out
<< "SharedBlob(" << &sb
;
1586 out
<< " loaded " << *sb
.persistent
;
1588 out
<< " sbid 0x" << std::hex
<< sb
.sbid_unloaded
<< std::dec
;
1593 BlueStore::SharedBlob::SharedBlob(uint64_t i
, Collection
*_coll
)
1594 : coll(_coll
), sbid_unloaded(i
)
1596 assert(sbid_unloaded
> 0);
1598 get_cache()->add_blob();
1602 BlueStore::SharedBlob::~SharedBlob()
1604 if (loaded
&& persistent
) {
1609 void BlueStore::SharedBlob::put()
1612 ldout(coll
->store
->cct
, 20) << __func__
<< " " << this
1613 << " removing self from set " << get_parent()
1616 auto coll_snap
= coll
;
1618 std::lock_guard
<std::recursive_mutex
> l(coll_snap
->cache
->lock
);
1619 if (coll_snap
!= coll
) {
1622 if (!coll_snap
->shared_blob_set
.remove(this, true)) {
1626 bc
._clear(coll_snap
->cache
);
1627 coll_snap
->cache
->rm_blob();
1633 void BlueStore::SharedBlob::get_ref(uint64_t offset
, uint32_t length
)
1636 persistent
->ref_map
.get(offset
, length
);
1639 void BlueStore::SharedBlob::put_ref(uint64_t offset
, uint32_t length
,
1641 set
<SharedBlob
*> *maybe_unshared
)
1645 persistent
->ref_map
.put(offset
, length
, r
, maybe_unshared
? &maybe
: nullptr);
1646 if (maybe_unshared
&& maybe
) {
1647 maybe_unshared
->insert(this);
1654 #define dout_prefix *_dout << "bluestore.sharedblobset(" << this << ") "
1656 void BlueStore::SharedBlobSet::dump(CephContext
*cct
, int lvl
)
1658 std::lock_guard
<std::mutex
> l(lock
);
1659 for (auto& i
: sb_map
) {
1660 ldout(cct
, lvl
) << i
.first
<< " : " << *i
.second
<< dendl
;
1667 #define dout_prefix *_dout << "bluestore.blob(" << this << ") "
1669 ostream
& operator<<(ostream
& out
, const BlueStore::Blob
& b
)
1671 out
<< "Blob(" << &b
;
1672 if (b
.is_spanning()) {
1673 out
<< " spanning " << b
.id
;
1675 out
<< " " << b
.get_blob() << " " << b
.get_blob_use_tracker();
1676 if (b
.shared_blob
) {
1677 out
<< " " << *b
.shared_blob
;
1679 out
<< " (shared_blob=NULL)";
1685 void BlueStore::Blob::discard_unallocated(Collection
*coll
)
1687 if (get_blob().is_shared()) {
1690 if (get_blob().is_compressed()) {
1691 bool discard
= false;
1692 bool all_invalid
= true;
1693 for (auto e
: get_blob().get_extents()) {
1694 if (!e
.is_valid()) {
1697 all_invalid
= false;
1700 assert(discard
== all_invalid
); // in case of compressed blob all
1701 // or none pextents are invalid.
1703 shared_blob
->bc
.discard(shared_blob
->get_cache(), 0,
1704 get_blob().get_logical_length());
1708 for (auto e
: get_blob().get_extents()) {
1709 if (!e
.is_valid()) {
1710 ldout(coll
->store
->cct
, 20) << __func__
<< " 0x" << std::hex
<< pos
1712 << std::dec
<< dendl
;
1713 shared_blob
->bc
.discard(shared_blob
->get_cache(), pos
, e
.length
);
1717 if (get_blob().can_prune_tail()) {
1718 dirty_blob().prune_tail();
1719 used_in_blob
.prune_tail(get_blob().get_ondisk_length());
1720 auto cct
= coll
->store
->cct
; //used by dout
1721 dout(20) << __func__
<< " pruned tail, now " << get_blob() << dendl
;
1726 void BlueStore::Blob::get_ref(
1731 // Caller has to initialize Blob's logical length prior to increment
1732 // references. Otherwise one is neither unable to determine required
1733 // amount of counters in case of per-au tracking nor obtain min_release_size
1734 // for single counter mode.
1735 assert(get_blob().get_logical_length() != 0);
1736 auto cct
= coll
->store
->cct
;
1737 dout(20) << __func__
<< " 0x" << std::hex
<< offset
<< "~" << length
1738 << std::dec
<< " " << *this << dendl
;
1740 if (used_in_blob
.is_empty()) {
1741 uint32_t min_release_size
=
1742 get_blob().get_release_size(coll
->store
->min_alloc_size
);
1743 uint64_t l
= get_blob().get_logical_length();
1744 dout(20) << __func__
<< " init 0x" << std::hex
<< l
<< ", "
1745 << min_release_size
<< std::dec
<< dendl
;
1746 used_in_blob
.init(l
, min_release_size
);
1753 bool BlueStore::Blob::put_ref(
1759 PExtentVector logical
;
1761 auto cct
= coll
->store
->cct
;
1762 dout(20) << __func__
<< " 0x" << std::hex
<< offset
<< "~" << length
1763 << std::dec
<< " " << *this << dendl
;
1765 bool empty
= used_in_blob
.put(
1770 // nothing to release
1771 if (!empty
&& logical
.empty()) {
1775 bluestore_blob_t
& b
= dirty_blob();
1776 return b
.release_extents(empty
, logical
, r
);
1779 bool BlueStore::Blob::can_reuse_blob(uint32_t min_alloc_size
,
1780 uint32_t target_blob_size
,
1782 uint32_t *length0
) {
1783 assert(min_alloc_size
);
1784 assert(target_blob_size
);
1785 if (!get_blob().is_mutable()) {
1789 uint32_t length
= *length0
;
1790 uint32_t end
= b_offset
+ length
;
1792 // Currently for the sake of simplicity we omit blob reuse if data is
1793 // unaligned with csum chunk. Later we can perform padding if needed.
1794 if (get_blob().has_csum() &&
1795 ((b_offset
% get_blob().get_csum_chunk_size()) != 0 ||
1796 (end
% get_blob().get_csum_chunk_size()) != 0)) {
1800 auto blen
= get_blob().get_logical_length();
1801 uint32_t new_blen
= blen
;
1803 // make sure target_blob_size isn't less than current blob len
1804 target_blob_size
= MAX(blen
, target_blob_size
);
1806 if (b_offset
>= blen
) {
1807 // new data totally stands out of the existing blob
1810 // new data overlaps with the existing blob
1811 new_blen
= MAX(blen
, end
);
1813 uint32_t overlap
= 0;
1814 if (new_blen
> blen
) {
1815 overlap
= blen
- b_offset
;
1820 if (!get_blob().is_unallocated(b_offset
, overlap
)) {
1821 // abort if any piece of the overlap has already been allocated
1826 if (new_blen
> blen
) {
1827 int64_t overflow
= int64_t(new_blen
) - target_blob_size
;
1828 // Unable to decrease the provided length to fit into max_blob_size
1829 if (overflow
>= length
) {
1833 // FIXME: in some cases we could reduce unused resolution
1834 if (get_blob().has_unused()) {
1839 new_blen
-= overflow
;
1844 if (new_blen
> blen
) {
1845 dirty_blob().add_tail(new_blen
);
1846 used_in_blob
.add_tail(new_blen
,
1847 get_blob().get_release_size(min_alloc_size
));
1853 void BlueStore::Blob::split(Collection
*coll
, uint32_t blob_offset
, Blob
*r
)
1855 auto cct
= coll
->store
->cct
; //used by dout
1856 dout(10) << __func__
<< " 0x" << std::hex
<< blob_offset
<< std::dec
1857 << " start " << *this << dendl
;
1858 assert(blob
.can_split());
1859 assert(used_in_blob
.can_split());
1860 bluestore_blob_t
&lb
= dirty_blob();
1861 bluestore_blob_t
&rb
= r
->dirty_blob();
1865 &(r
->used_in_blob
));
1867 lb
.split(blob_offset
, rb
);
1868 shared_blob
->bc
.split(shared_blob
->get_cache(), blob_offset
, r
->shared_blob
->bc
);
1870 dout(10) << __func__
<< " 0x" << std::hex
<< blob_offset
<< std::dec
1871 << " finish " << *this << dendl
;
1872 dout(10) << __func__
<< " 0x" << std::hex
<< blob_offset
<< std::dec
1873 << " and " << *r
<< dendl
;
1876 #ifndef CACHE_BLOB_BL
1877 void BlueStore::Blob::decode(
1879 bufferptr::iterator
& p
,
1882 bool include_ref_map
)
1884 denc(blob
, p
, struct_v
);
1885 if (blob
.is_shared()) {
1888 if (include_ref_map
) {
1890 used_in_blob
.decode(p
);
1892 used_in_blob
.clear();
1893 bluestore_extent_ref_map_t legacy_ref_map
;
1894 legacy_ref_map
.decode(p
);
1895 for (auto r
: legacy_ref_map
.ref_map
) {
1899 r
.second
.refs
* r
.second
.length
);
1908 ostream
& operator<<(ostream
& out
, const BlueStore::Extent
& e
)
1910 return out
<< std::hex
<< "0x" << e
.logical_offset
<< "~" << e
.length
1911 << ": 0x" << e
.blob_offset
<< "~" << e
.length
<< std::dec
1916 BlueStore::OldExtent
* BlueStore::OldExtent::create(CollectionRef c
,
1921 OldExtent
* oe
= new OldExtent(lo
, o
, l
, b
);
1922 b
->put_ref(c
.get(), o
, l
, &(oe
->r
));
1923 oe
->blob_empty
= b
->get_referenced_bytes() == 0;
1930 #define dout_prefix *_dout << "bluestore.extentmap(" << this << ") "
1932 BlueStore::ExtentMap::ExtentMap(Onode
*o
)
1935 o
->c
->store
->cct
->_conf
->bluestore_extent_map_inline_shard_prealloc_size
) {
1938 void BlueStore::ExtentMap::update(KeyValueDB::Transaction t
,
1941 auto cct
= onode
->c
->store
->cct
; //used by dout
1942 dout(20) << __func__
<< " " << onode
->oid
<< (force
? " force" : "") << dendl
;
1943 if (onode
->onode
.extent_map_shards
.empty()) {
1944 if (inline_bl
.length() == 0) {
1946 // we need to encode inline_bl to measure encoded length
1947 bool never_happen
= encode_some(0, OBJECT_MAX_SIZE
, inline_bl
, &n
);
1948 inline_bl
.reassign_to_mempool(mempool::mempool_bluestore_cache_other
);
1949 assert(!never_happen
);
1950 size_t len
= inline_bl
.length();
1951 dout(20) << __func__
<< " inline shard " << len
<< " bytes from " << n
1952 << " extents" << dendl
;
1953 if (!force
&& len
> cct
->_conf
->bluestore_extent_map_shard_max_size
) {
1954 request_reshard(0, OBJECT_MAX_SIZE
);
1958 // will persist in the onode key.
1960 // pending shard update
1961 struct dirty_shard_t
{
1964 dirty_shard_t(Shard
*s
) : shard(s
) {}
1966 vector
<dirty_shard_t
> encoded_shards
;
1967 // allocate slots for all shards in a single call instead of
1968 // doing multiple allocations - one per each dirty shard
1969 encoded_shards
.reserve(shards
.size());
1971 auto p
= shards
.begin();
1973 while (p
!= shards
.end()) {
1974 assert(p
->shard_info
->offset
>= prev_p
->shard_info
->offset
);
1979 if (n
== shards
.end()) {
1980 endoff
= OBJECT_MAX_SIZE
;
1982 endoff
= n
->shard_info
->offset
;
1984 encoded_shards
.emplace_back(dirty_shard_t(&(*p
)));
1985 bufferlist
& bl
= encoded_shards
.back().bl
;
1986 if (encode_some(p
->shard_info
->offset
, endoff
- p
->shard_info
->offset
,
1989 derr
<< __func__
<< " encode_some needs reshard" << dendl
;
1993 size_t len
= bl
.length();
1995 dout(20) << __func__
<< " shard 0x" << std::hex
1996 << p
->shard_info
->offset
<< std::dec
<< " is " << len
1997 << " bytes (was " << p
->shard_info
->bytes
<< ") from "
1998 << p
->extents
<< " extents" << dendl
;
2001 if (len
> cct
->_conf
->bluestore_extent_map_shard_max_size
) {
2002 // we are big; reshard ourselves
2003 request_reshard(p
->shard_info
->offset
, endoff
);
2005 // avoid resharding the trailing shard, even if it is small
2006 else if (n
!= shards
.end() &&
2007 len
< g_conf
->bluestore_extent_map_shard_min_size
) {
2008 assert(endoff
!= OBJECT_MAX_SIZE
);
2009 if (p
== shards
.begin()) {
2010 // we are the first shard, combine with next shard
2011 request_reshard(p
->shard_info
->offset
, endoff
+ 1);
2013 // combine either with the previous shard or the next,
2014 // whichever is smaller
2015 if (prev_p
->shard_info
->bytes
> n
->shard_info
->bytes
) {
2016 request_reshard(p
->shard_info
->offset
, endoff
+ 1);
2018 request_reshard(prev_p
->shard_info
->offset
, endoff
);
2027 if (needs_reshard()) {
2031 // schedule DB update for dirty shards
2033 for (auto& it
: encoded_shards
) {
2034 it
.shard
->dirty
= false;
2035 it
.shard
->shard_info
->bytes
= it
.bl
.length();
2036 generate_extent_shard_key_and_apply(
2038 it
.shard
->shard_info
->offset
,
2040 [&](const string
& final_key
) {
2041 t
->set(PREFIX_OBJ
, final_key
, it
.bl
);
2048 bid_t
BlueStore::ExtentMap::allocate_spanning_blob_id()
2050 if (spanning_blob_map
.empty())
2052 bid_t bid
= spanning_blob_map
.rbegin()->first
+ 1;
2053 // bid is valid and available.
2056 // Find next unused bid;
2057 bid
= rand() % (numeric_limits
<bid_t
>::max() + 1);
2058 const auto begin_bid
= bid
;
2060 if (!spanning_blob_map
.count(bid
))
2064 if (bid
< 0) bid
= 0;
2066 } while (bid
!= begin_bid
);
2067 assert(0 == "no available blob id");
2070 void BlueStore::ExtentMap::reshard(
2072 KeyValueDB::Transaction t
)
2074 auto cct
= onode
->c
->store
->cct
; // used by dout
2076 dout(10) << __func__
<< " 0x[" << std::hex
<< needs_reshard_begin
<< ","
2077 << needs_reshard_end
<< ")" << std::dec
2078 << " of " << onode
->onode
.extent_map_shards
.size()
2079 << " shards on " << onode
->oid
<< dendl
;
2080 for (auto& p
: spanning_blob_map
) {
2081 dout(20) << __func__
<< " spanning blob " << p
.first
<< " " << *p
.second
2084 // determine shard index range
2085 unsigned si_begin
= 0, si_end
= 0;
2086 if (!shards
.empty()) {
2087 while (si_begin
+ 1 < shards
.size() &&
2088 shards
[si_begin
+ 1].shard_info
->offset
<= needs_reshard_begin
) {
2091 needs_reshard_begin
= shards
[si_begin
].shard_info
->offset
;
2092 for (si_end
= si_begin
; si_end
< shards
.size(); ++si_end
) {
2093 if (shards
[si_end
].shard_info
->offset
>= needs_reshard_end
) {
2094 needs_reshard_end
= shards
[si_end
].shard_info
->offset
;
2098 if (si_end
== shards
.size()) {
2099 needs_reshard_end
= OBJECT_MAX_SIZE
;
2101 dout(20) << __func__
<< " shards [" << si_begin
<< "," << si_end
<< ")"
2102 << " over 0x[" << std::hex
<< needs_reshard_begin
<< ","
2103 << needs_reshard_end
<< ")" << std::dec
<< dendl
;
2106 fault_range(db
, needs_reshard_begin
, (needs_reshard_end
- needs_reshard_begin
));
2108 // we may need to fault in a larger interval later must have all
2109 // referring extents for spanning blobs loaded in order to have
2110 // accurate use_tracker values.
2111 uint32_t spanning_scan_begin
= needs_reshard_begin
;
2112 uint32_t spanning_scan_end
= needs_reshard_end
;
2116 for (unsigned i
= si_begin
; i
< si_end
; ++i
) {
2117 generate_extent_shard_key_and_apply(
2118 onode
->key
, shards
[i
].shard_info
->offset
, &key
,
2119 [&](const string
& final_key
) {
2120 t
->rmkey(PREFIX_OBJ
, final_key
);
2125 // calculate average extent size
2127 unsigned extents
= 0;
2128 if (onode
->onode
.extent_map_shards
.empty()) {
2129 bytes
= inline_bl
.length();
2130 extents
= extent_map
.size();
2132 for (unsigned i
= si_begin
; i
< si_end
; ++i
) {
2133 bytes
+= shards
[i
].shard_info
->bytes
;
2134 extents
+= shards
[i
].extents
;
2137 unsigned target
= cct
->_conf
->bluestore_extent_map_shard_target_size
;
2138 unsigned slop
= target
*
2139 cct
->_conf
->bluestore_extent_map_shard_target_size_slop
;
2140 unsigned extent_avg
= bytes
/ MAX(1, extents
);
2141 dout(20) << __func__
<< " extent_avg " << extent_avg
<< ", target " << target
2142 << ", slop " << slop
<< dendl
;
2145 unsigned estimate
= 0;
2146 unsigned offset
= needs_reshard_begin
;
2147 vector
<bluestore_onode_t::shard_info
> new_shard_info
;
2148 unsigned max_blob_end
= 0;
2149 Extent
dummy(needs_reshard_begin
);
2150 for (auto e
= extent_map
.lower_bound(dummy
);
2151 e
!= extent_map
.end();
2153 if (e
->logical_offset
>= needs_reshard_end
) {
2156 dout(30) << " extent " << *e
<< dendl
;
2158 // disfavor shard boundaries that span a blob
2159 bool would_span
= (e
->logical_offset
< max_blob_end
) || e
->blob_offset
;
2161 estimate
+ extent_avg
> target
+ (would_span
? slop
: 0)) {
2163 if (offset
== needs_reshard_begin
) {
2164 new_shard_info
.emplace_back(bluestore_onode_t::shard_info());
2165 new_shard_info
.back().offset
= offset
;
2166 dout(20) << __func__
<< " new shard 0x" << std::hex
<< offset
2167 << std::dec
<< dendl
;
2169 offset
= e
->logical_offset
;
2170 new_shard_info
.emplace_back(bluestore_onode_t::shard_info());
2171 new_shard_info
.back().offset
= offset
;
2172 dout(20) << __func__
<< " new shard 0x" << std::hex
<< offset
2173 << std::dec
<< dendl
;
2176 estimate
+= extent_avg
;
2177 unsigned bs
= e
->blob_start();
2178 if (bs
< spanning_scan_begin
) {
2179 spanning_scan_begin
= bs
;
2181 uint32_t be
= e
->blob_end();
2182 if (be
> max_blob_end
) {
2185 if (be
> spanning_scan_end
) {
2186 spanning_scan_end
= be
;
2189 if (new_shard_info
.empty() && (si_begin
> 0 ||
2190 si_end
< shards
.size())) {
2191 // we resharded a partial range; we must produce at least one output
2193 new_shard_info
.emplace_back(bluestore_onode_t::shard_info());
2194 new_shard_info
.back().offset
= needs_reshard_begin
;
2195 dout(20) << __func__
<< " new shard 0x" << std::hex
<< needs_reshard_begin
2196 << std::dec
<< " (singleton degenerate case)" << dendl
;
2199 auto& sv
= onode
->onode
.extent_map_shards
;
2200 dout(20) << __func__
<< " new " << new_shard_info
<< dendl
;
2201 dout(20) << __func__
<< " old " << sv
<< dendl
;
2203 // no old shards to keep
2204 sv
.swap(new_shard_info
);
2205 init_shards(true, true);
2207 // splice in new shards
2208 sv
.erase(sv
.begin() + si_begin
, sv
.begin() + si_end
);
2209 shards
.erase(shards
.begin() + si_begin
, shards
.begin() + si_end
);
2211 sv
.begin() + si_begin
,
2212 new_shard_info
.begin(),
2213 new_shard_info
.end());
2214 shards
.insert(shards
.begin() + si_begin
, new_shard_info
.size(), Shard());
2215 si_end
= si_begin
+ new_shard_info
.size();
2217 assert(sv
.size() == shards
.size());
2219 // note that we need to update every shard_info of shards here,
2220 // as sv might have been totally re-allocated above
2221 for (unsigned i
= 0; i
< shards
.size(); i
++) {
2222 shards
[i
].shard_info
= &sv
[i
];
2225 // mark newly added shards as dirty
2226 for (unsigned i
= si_begin
; i
< si_end
; ++i
) {
2227 shards
[i
].loaded
= true;
2228 shards
[i
].dirty
= true;
2231 dout(20) << __func__
<< " fin " << sv
<< dendl
;
2235 // no more shards; unspan all previously spanning blobs
2236 auto p
= spanning_blob_map
.begin();
2237 while (p
!= spanning_blob_map
.end()) {
2239 dout(30) << __func__
<< " un-spanning " << *p
->second
<< dendl
;
2240 p
= spanning_blob_map
.erase(p
);
2243 // identify new spanning blobs
2244 dout(20) << __func__
<< " checking spanning blobs 0x[" << std::hex
2245 << spanning_scan_begin
<< "," << spanning_scan_end
<< ")" << dendl
;
2246 if (spanning_scan_begin
< needs_reshard_begin
) {
2247 fault_range(db
, spanning_scan_begin
,
2248 needs_reshard_begin
- spanning_scan_begin
);
2250 if (spanning_scan_end
> needs_reshard_end
) {
2251 fault_range(db
, needs_reshard_end
,
2252 spanning_scan_end
- needs_reshard_end
);
2254 auto sp
= sv
.begin() + si_begin
;
2255 auto esp
= sv
.end();
2256 unsigned shard_start
= sp
->offset
;
2260 shard_end
= OBJECT_MAX_SIZE
;
2262 shard_end
= sp
->offset
;
2264 Extent
dummy(needs_reshard_begin
);
2265 for (auto e
= extent_map
.lower_bound(dummy
); e
!= extent_map
.end(); ++e
) {
2266 if (e
->logical_offset
>= needs_reshard_end
) {
2269 dout(30) << " extent " << *e
<< dendl
;
2270 while (e
->logical_offset
>= shard_end
) {
2271 shard_start
= shard_end
;
2275 shard_end
= OBJECT_MAX_SIZE
;
2277 shard_end
= sp
->offset
;
2279 dout(30) << __func__
<< " shard 0x" << std::hex
<< shard_start
2280 << " to 0x" << shard_end
<< std::dec
<< dendl
;
2282 if (e
->blob_escapes_range(shard_start
, shard_end
- shard_start
)) {
2283 if (!e
->blob
->is_spanning()) {
2284 // We have two options: (1) split the blob into pieces at the
2285 // shard boundaries (and adjust extents accordingly), or (2)
2286 // mark it spanning. We prefer to cut the blob if we can. Note that
2287 // we may have to split it multiple times--potentially at every
2289 bool must_span
= false;
2290 BlobRef b
= e
->blob
;
2291 if (b
->can_split()) {
2292 uint32_t bstart
= e
->blob_start();
2293 uint32_t bend
= e
->blob_end();
2294 for (const auto& sh
: shards
) {
2295 if (bstart
< sh
.shard_info
->offset
&&
2296 bend
> sh
.shard_info
->offset
) {
2297 uint32_t blob_offset
= sh
.shard_info
->offset
- bstart
;
2298 if (b
->can_split_at(blob_offset
)) {
2299 dout(20) << __func__
<< " splitting blob, bstart 0x"
2300 << std::hex
<< bstart
<< " blob_offset 0x"
2301 << blob_offset
<< std::dec
<< " " << *b
<< dendl
;
2302 b
= split_blob(b
, blob_offset
, sh
.shard_info
->offset
);
2303 // switch b to the new right-hand side, in case it
2304 // *also* has to get split.
2305 bstart
+= blob_offset
;
2306 onode
->c
->store
->logger
->inc(l_bluestore_blob_split
);
2317 auto bid
= allocate_spanning_blob_id();
2319 spanning_blob_map
[b
->id
] = b
;
2320 dout(20) << __func__
<< " adding spanning " << *b
<< dendl
;
2324 if (e
->blob
->is_spanning()) {
2325 spanning_blob_map
.erase(e
->blob
->id
);
2327 dout(30) << __func__
<< " un-spanning " << *e
->blob
<< dendl
;
2333 clear_needs_reshard();
2336 bool BlueStore::ExtentMap::encode_some(
2342 auto cct
= onode
->c
->store
->cct
; //used by dout
2343 Extent
dummy(offset
);
2344 auto start
= extent_map
.lower_bound(dummy
);
2345 uint32_t end
= offset
+ length
;
2347 __u8 struct_v
= 2; // Version 2 differs from v1 in blob's ref_map
2348 // serialization only. Hence there is no specific
2349 // handling at ExtentMap level.
2353 bool must_reshard
= false;
2354 for (auto p
= start
;
2355 p
!= extent_map
.end() && p
->logical_offset
< end
;
2357 assert(p
->logical_offset
>= offset
);
2358 p
->blob
->last_encoded_id
= -1;
2359 if (!p
->blob
->is_spanning() && p
->blob_escapes_range(offset
, length
)) {
2360 dout(30) << __func__
<< " 0x" << std::hex
<< offset
<< "~" << length
2361 << std::dec
<< " hit new spanning blob " << *p
<< dendl
;
2362 request_reshard(p
->blob_start(), p
->blob_end());
2363 must_reshard
= true;
2365 if (!must_reshard
) {
2366 denc_varint(0, bound
); // blobid
2367 denc_varint(0, bound
); // logical_offset
2368 denc_varint(0, bound
); // len
2369 denc_varint(0, bound
); // blob_offset
2371 p
->blob
->bound_encode(
2374 p
->blob
->shared_blob
->get_sbid(),
2382 denc(struct_v
, bound
);
2383 denc_varint(0, bound
); // number of extents
2386 auto app
= bl
.get_contiguous_appender(bound
);
2387 denc(struct_v
, app
);
2388 denc_varint(n
, app
);
2395 uint64_t prev_len
= 0;
2396 for (auto p
= start
;
2397 p
!= extent_map
.end() && p
->logical_offset
< end
;
2400 bool include_blob
= false;
2401 if (p
->blob
->is_spanning()) {
2402 blobid
= p
->blob
->id
<< BLOBID_SHIFT_BITS
;
2403 blobid
|= BLOBID_FLAG_SPANNING
;
2404 } else if (p
->blob
->last_encoded_id
< 0) {
2405 p
->blob
->last_encoded_id
= n
+ 1; // so it is always non-zero
2406 include_blob
= true;
2407 blobid
= 0; // the decoder will infer the id from n
2409 blobid
= p
->blob
->last_encoded_id
<< BLOBID_SHIFT_BITS
;
2411 if (p
->logical_offset
== pos
) {
2412 blobid
|= BLOBID_FLAG_CONTIGUOUS
;
2414 if (p
->blob_offset
== 0) {
2415 blobid
|= BLOBID_FLAG_ZEROOFFSET
;
2417 if (p
->length
== prev_len
) {
2418 blobid
|= BLOBID_FLAG_SAMELENGTH
;
2420 prev_len
= p
->length
;
2422 denc_varint(blobid
, app
);
2423 if ((blobid
& BLOBID_FLAG_CONTIGUOUS
) == 0) {
2424 denc_varint_lowz(p
->logical_offset
- pos
, app
);
2426 if ((blobid
& BLOBID_FLAG_ZEROOFFSET
) == 0) {
2427 denc_varint_lowz(p
->blob_offset
, app
);
2429 if ((blobid
& BLOBID_FLAG_SAMELENGTH
) == 0) {
2430 denc_varint_lowz(p
->length
, app
);
2432 pos
= p
->logical_end();
2434 p
->blob
->encode(app
, struct_v
, p
->blob
->shared_blob
->get_sbid(), false);
2438 /*derr << __func__ << bl << dendl;
2439 derr << __func__ << ":";
2446 unsigned BlueStore::ExtentMap::decode_some(bufferlist
& bl
)
2448 auto cct
= onode
->c
->store
->cct
; //used by dout
2450 derr << __func__ << ":";
2455 assert(bl
.get_num_buffers() <= 1);
2456 auto p
= bl
.front().begin_deep();
2459 // Version 2 differs from v1 in blob's ref_map
2460 // serialization only. Hence there is no specific
2461 // handling at ExtentMap level below.
2462 assert(struct_v
== 1 || struct_v
== 2);
2465 denc_varint(num
, p
);
2466 vector
<BlobRef
> blobs(num
);
2468 uint64_t prev_len
= 0;
2472 Extent
*le
= new Extent();
2474 denc_varint(blobid
, p
);
2475 if ((blobid
& BLOBID_FLAG_CONTIGUOUS
) == 0) {
2477 denc_varint_lowz(gap
, p
);
2480 le
->logical_offset
= pos
;
2481 if ((blobid
& BLOBID_FLAG_ZEROOFFSET
) == 0) {
2482 denc_varint_lowz(le
->blob_offset
, p
);
2484 le
->blob_offset
= 0;
2486 if ((blobid
& BLOBID_FLAG_SAMELENGTH
) == 0) {
2487 denc_varint_lowz(prev_len
, p
);
2489 le
->length
= prev_len
;
2491 if (blobid
& BLOBID_FLAG_SPANNING
) {
2492 dout(30) << __func__
<< " getting spanning blob "
2493 << (blobid
>> BLOBID_SHIFT_BITS
) << dendl
;
2494 le
->assign_blob(get_spanning_blob(blobid
>> BLOBID_SHIFT_BITS
));
2496 blobid
>>= BLOBID_SHIFT_BITS
;
2498 le
->assign_blob(blobs
[blobid
- 1]);
2501 Blob
*b
= new Blob();
2503 b
->decode(onode
->c
, p
, struct_v
, &sbid
, false);
2505 onode
->c
->open_shared_blob(sbid
, b
);
2508 // we build ref_map dynamically for non-spanning blobs
2516 extent_map
.insert(*le
);
2523 void BlueStore::ExtentMap::bound_encode_spanning_blobs(size_t& p
)
2525 // Version 2 differs from v1 in blob's ref_map
2526 // serialization only. Hence there is no specific
2527 // handling at ExtentMap level.
2531 denc_varint((uint32_t)0, p
);
2532 size_t key_size
= 0;
2533 denc_varint((uint32_t)0, key_size
);
2534 p
+= spanning_blob_map
.size() * key_size
;
2535 for (const auto& i
: spanning_blob_map
) {
2536 i
.second
->bound_encode(p
, struct_v
, i
.second
->shared_blob
->get_sbid(), true);
2540 void BlueStore::ExtentMap::encode_spanning_blobs(
2541 bufferlist::contiguous_appender
& p
)
2543 // Version 2 differs from v1 in blob's ref_map
2544 // serialization only. Hence there is no specific
2545 // handling at ExtentMap level.
2549 denc_varint(spanning_blob_map
.size(), p
);
2550 for (auto& i
: spanning_blob_map
) {
2551 denc_varint(i
.second
->id
, p
);
2552 i
.second
->encode(p
, struct_v
, i
.second
->shared_blob
->get_sbid(), true);
2556 void BlueStore::ExtentMap::decode_spanning_blobs(
2557 bufferptr::iterator
& p
)
2561 // Version 2 differs from v1 in blob's ref_map
2562 // serialization only. Hence there is no specific
2563 // handling at ExtentMap level.
2564 assert(struct_v
== 1 || struct_v
== 2);
2569 BlobRef
b(new Blob());
2570 denc_varint(b
->id
, p
);
2571 spanning_blob_map
[b
->id
] = b
;
2573 b
->decode(onode
->c
, p
, struct_v
, &sbid
, true);
2574 onode
->c
->open_shared_blob(sbid
, b
);
2578 void BlueStore::ExtentMap::init_shards(bool loaded
, bool dirty
)
2580 shards
.resize(onode
->onode
.extent_map_shards
.size());
2582 for (auto &s
: onode
->onode
.extent_map_shards
) {
2583 shards
[i
].shard_info
= &s
;
2584 shards
[i
].loaded
= loaded
;
2585 shards
[i
].dirty
= dirty
;
2590 void BlueStore::ExtentMap::fault_range(
2595 auto cct
= onode
->c
->store
->cct
; //used by dout
2596 dout(30) << __func__
<< " 0x" << std::hex
<< offset
<< "~" << length
2597 << std::dec
<< dendl
;
2598 auto start
= seek_shard(offset
);
2599 auto last
= seek_shard(offset
+ length
);
2604 assert(last
>= start
);
2606 while (start
<= last
) {
2607 assert((size_t)start
< shards
.size());
2608 auto p
= &shards
[start
];
2610 dout(30) << __func__
<< " opening shard 0x" << std::hex
2611 << p
->shard_info
->offset
<< std::dec
<< dendl
;
2613 generate_extent_shard_key_and_apply(
2614 onode
->key
, p
->shard_info
->offset
, &key
,
2615 [&](const string
& final_key
) {
2616 int r
= db
->get(PREFIX_OBJ
, final_key
, &v
);
2618 derr
<< __func__
<< " missing shard 0x" << std::hex
2619 << p
->shard_info
->offset
<< std::dec
<< " for " << onode
->oid
2625 p
->extents
= decode_some(v
);
2627 dout(20) << __func__
<< " open shard 0x" << std::hex
2628 << p
->shard_info
->offset
<< std::dec
2629 << " (" << v
.length() << " bytes)" << dendl
;
2630 assert(p
->dirty
== false);
2631 assert(v
.length() == p
->shard_info
->bytes
);
2632 onode
->c
->store
->logger
->inc(l_bluestore_onode_shard_misses
);
2634 onode
->c
->store
->logger
->inc(l_bluestore_onode_shard_hits
);
2640 void BlueStore::ExtentMap::dirty_range(
2644 auto cct
= onode
->c
->store
->cct
; //used by dout
2645 dout(30) << __func__
<< " 0x" << std::hex
<< offset
<< "~" << length
2646 << std::dec
<< dendl
;
2647 if (shards
.empty()) {
2648 dout(20) << __func__
<< " mark inline shard dirty" << dendl
;
2652 auto start
= seek_shard(offset
);
2653 auto last
= seek_shard(offset
+ length
);
2657 assert(last
>= start
);
2658 while (start
<= last
) {
2659 assert((size_t)start
< shards
.size());
2660 auto p
= &shards
[start
];
2662 dout(20) << __func__
<< " shard 0x" << std::hex
<< p
->shard_info
->offset
2663 << std::dec
<< " is not loaded, can't mark dirty" << dendl
;
2664 assert(0 == "can't mark unloaded shard dirty");
2667 dout(20) << __func__
<< " mark shard 0x" << std::hex
2668 << p
->shard_info
->offset
<< std::dec
<< " dirty" << dendl
;
2675 BlueStore::extent_map_t::iterator
BlueStore::ExtentMap::find(
2678 Extent
dummy(offset
);
2679 return extent_map
.find(dummy
);
2682 BlueStore::extent_map_t::iterator
BlueStore::ExtentMap::seek_lextent(
2685 Extent
dummy(offset
);
2686 auto fp
= extent_map
.lower_bound(dummy
);
2687 if (fp
!= extent_map
.begin()) {
2689 if (fp
->logical_end() <= offset
) {
2696 BlueStore::extent_map_t::const_iterator
BlueStore::ExtentMap::seek_lextent(
2697 uint64_t offset
) const
2699 Extent
dummy(offset
);
2700 auto fp
= extent_map
.lower_bound(dummy
);
2701 if (fp
!= extent_map
.begin()) {
2703 if (fp
->logical_end() <= offset
) {
2710 bool BlueStore::ExtentMap::has_any_lextents(uint64_t offset
, uint64_t length
)
2712 auto fp
= seek_lextent(offset
);
2713 if (fp
== extent_map
.end() || fp
->logical_offset
>= offset
+ length
) {
2719 int BlueStore::ExtentMap::compress_extent_map(
2723 auto cct
= onode
->c
->store
->cct
; //used by dout
2724 if (extent_map
.empty())
2727 auto p
= seek_lextent(offset
);
2728 if (p
!= extent_map
.begin()) {
2729 --p
; // start to the left of offset
2731 // the caller should have just written to this region
2732 assert(p
!= extent_map
.end());
2734 // identify the *next* shard
2735 auto pshard
= shards
.begin();
2736 while (pshard
!= shards
.end() &&
2737 p
->logical_offset
>= pshard
->shard_info
->offset
) {
2741 if (pshard
!= shards
.end()) {
2742 shard_end
= pshard
->shard_info
->offset
;
2744 shard_end
= OBJECT_MAX_SIZE
;
2748 for (++n
; n
!= extent_map
.end(); p
= n
++) {
2749 if (n
->logical_offset
> offset
+ length
) {
2750 break; // stop after end
2752 while (n
!= extent_map
.end() &&
2753 p
->logical_end() == n
->logical_offset
&&
2754 p
->blob
== n
->blob
&&
2755 p
->blob_offset
+ p
->length
== n
->blob_offset
&&
2756 n
->logical_offset
< shard_end
) {
2757 dout(20) << __func__
<< " 0x" << std::hex
<< offset
<< "~" << length
2758 << " next shard 0x" << shard_end
<< std::dec
2759 << " merging " << *p
<< " and " << *n
<< dendl
;
2760 p
->length
+= n
->length
;
2764 if (n
== extent_map
.end()) {
2767 if (n
->logical_offset
>= shard_end
) {
2768 assert(pshard
!= shards
.end());
2770 if (pshard
!= shards
.end()) {
2771 shard_end
= pshard
->shard_info
->offset
;
2773 shard_end
= OBJECT_MAX_SIZE
;
2777 if (removed
&& onode
) {
2778 onode
->c
->store
->logger
->inc(l_bluestore_extent_compress
, removed
);
2783 void BlueStore::ExtentMap::punch_hole(
2787 old_extent_map_t
*old_extents
)
2789 auto p
= seek_lextent(offset
);
2790 uint64_t end
= offset
+ length
;
2791 while (p
!= extent_map
.end()) {
2792 if (p
->logical_offset
>= end
) {
2795 if (p
->logical_offset
< offset
) {
2796 if (p
->logical_end() > end
) {
2797 // split and deref middle
2798 uint64_t front
= offset
- p
->logical_offset
;
2799 OldExtent
* oe
= OldExtent::create(c
, offset
, p
->blob_offset
+ front
,
2801 old_extents
->push_back(*oe
);
2803 p
->blob_offset
+ front
+ length
,
2804 p
->length
- front
- length
,
2810 assert(p
->logical_end() > offset
); // else seek_lextent bug
2811 uint64_t keep
= offset
- p
->logical_offset
;
2812 OldExtent
* oe
= OldExtent::create(c
, offset
, p
->blob_offset
+ keep
,
2813 p
->length
- keep
, p
->blob
);
2814 old_extents
->push_back(*oe
);
2820 if (p
->logical_offset
+ p
->length
<= end
) {
2821 // deref whole lextent
2822 OldExtent
* oe
= OldExtent::create(c
, p
->logical_offset
, p
->blob_offset
,
2823 p
->length
, p
->blob
);
2824 old_extents
->push_back(*oe
);
2829 uint64_t keep
= p
->logical_end() - end
;
2830 OldExtent
* oe
= OldExtent::create(c
, p
->logical_offset
, p
->blob_offset
,
2831 p
->length
- keep
, p
->blob
);
2832 old_extents
->push_back(*oe
);
2834 add(end
, p
->blob_offset
+ p
->length
- keep
, keep
, p
->blob
);
2840 BlueStore::Extent
*BlueStore::ExtentMap::set_lextent(
2842 uint64_t logical_offset
,
2843 uint64_t blob_offset
, uint64_t length
, BlobRef b
,
2844 old_extent_map_t
*old_extents
)
2846 // We need to have completely initialized Blob to increment its ref counters.
2847 assert(b
->get_blob().get_logical_length() != 0);
2849 // Do get_ref prior to punch_hole to prevent from putting reused blob into
2850 // old_extents list if we overwre the blob totally
2851 // This might happen during WAL overwrite.
2852 b
->get_ref(onode
->c
, blob_offset
, length
);
2855 punch_hole(c
, logical_offset
, length
, old_extents
);
2858 Extent
*le
= new Extent(logical_offset
, blob_offset
, length
, b
);
2859 extent_map
.insert(*le
);
2860 if (spans_shard(logical_offset
, length
)) {
2861 request_reshard(logical_offset
, logical_offset
+ length
);
2866 BlueStore::BlobRef
BlueStore::ExtentMap::split_blob(
2868 uint32_t blob_offset
,
2871 auto cct
= onode
->c
->store
->cct
; //used by dout
2873 uint32_t end_pos
= pos
+ lb
->get_blob().get_logical_length() - blob_offset
;
2874 dout(20) << __func__
<< " 0x" << std::hex
<< pos
<< " end 0x" << end_pos
2875 << " blob_offset 0x" << blob_offset
<< std::dec
<< " " << *lb
2877 BlobRef rb
= onode
->c
->new_blob();
2878 lb
->split(onode
->c
, blob_offset
, rb
.get());
2880 for (auto ep
= seek_lextent(pos
);
2881 ep
!= extent_map
.end() && ep
->logical_offset
< end_pos
;
2883 if (ep
->blob
!= lb
) {
2886 if (ep
->logical_offset
< pos
) {
2888 size_t left
= pos
- ep
->logical_offset
;
2889 Extent
*ne
= new Extent(pos
, 0, ep
->length
- left
, rb
);
2890 extent_map
.insert(*ne
);
2892 dout(30) << __func__
<< " split " << *ep
<< dendl
;
2893 dout(30) << __func__
<< " to " << *ne
<< dendl
;
2896 assert(ep
->blob_offset
>= blob_offset
);
2899 ep
->blob_offset
-= blob_offset
;
2900 dout(30) << __func__
<< " adjusted " << *ep
<< dendl
;
2909 #define dout_prefix *_dout << "bluestore.onode(" << this << ")." << __func__ << " "
2911 void BlueStore::Onode::flush()
2913 if (flushing_count
.load()) {
2914 ldout(c
->store
->cct
, 20) << __func__
<< " cnt:" << flushing_count
<< dendl
;
2915 std::unique_lock
<std::mutex
> l(flush_lock
);
2916 while (flushing_count
.load()) {
2920 ldout(c
->store
->cct
, 20) << __func__
<< " done" << dendl
;
2923 // =======================================================
2926 /// Checks for writes to the same pextent within a blob
2927 bool BlueStore::WriteContext::has_conflict(
2931 uint64_t min_alloc_size
)
2933 assert((loffs
% min_alloc_size
) == 0);
2934 assert((loffs_end
% min_alloc_size
) == 0);
2935 for (auto w
: writes
) {
2937 auto loffs2
= P2ALIGN(w
.logical_offset
, min_alloc_size
);
2938 auto loffs2_end
= P2ROUNDUP(w
.logical_offset
+ w
.length0
, min_alloc_size
);
2939 if ((loffs
<= loffs2
&& loffs_end
> loffs2
) ||
2940 (loffs
>= loffs2
&& loffs
< loffs2_end
)) {
2948 // =======================================================
2952 #define dout_prefix *_dout << "bluestore.DeferredBatch(" << this << ") "
2954 void BlueStore::DeferredBatch::prepare_write(
2956 uint64_t seq
, uint64_t offset
, uint64_t length
,
2957 bufferlist::const_iterator
& blp
)
2959 _discard(cct
, offset
, length
);
2960 auto i
= iomap
.insert(make_pair(offset
, deferred_io()));
2961 assert(i
.second
); // this should be a new insertion
2962 i
.first
->second
.seq
= seq
;
2963 blp
.copy(length
, i
.first
->second
.bl
);
2964 i
.first
->second
.bl
.reassign_to_mempool(
2965 mempool::mempool_bluestore_writing_deferred
);
2966 dout(20) << __func__
<< " seq " << seq
2967 << " 0x" << std::hex
<< offset
<< "~" << length
2968 << " crc " << i
.first
->second
.bl
.crc32c(-1)
2969 << std::dec
<< dendl
;
2970 seq_bytes
[seq
] += length
;
2971 #ifdef DEBUG_DEFERRED
2976 void BlueStore::DeferredBatch::_discard(
2977 CephContext
*cct
, uint64_t offset
, uint64_t length
)
2979 generic_dout(20) << __func__
<< " 0x" << std::hex
<< offset
<< "~" << length
2980 << std::dec
<< dendl
;
2981 auto p
= iomap
.lower_bound(offset
);
2982 if (p
!= iomap
.begin()) {
2984 auto end
= p
->first
+ p
->second
.bl
.length();
2987 head
.substr_of(p
->second
.bl
, 0, offset
- p
->first
);
2988 dout(20) << __func__
<< " keep head " << p
->second
.seq
2989 << " 0x" << std::hex
<< p
->first
<< "~" << p
->second
.bl
.length()
2990 << " -> 0x" << head
.length() << std::dec
<< dendl
;
2991 auto i
= seq_bytes
.find(p
->second
.seq
);
2992 assert(i
!= seq_bytes
.end());
2993 if (end
> offset
+ length
) {
2995 tail
.substr_of(p
->second
.bl
, offset
+ length
- p
->first
,
2996 end
- (offset
+ length
));
2997 dout(20) << __func__
<< " keep tail " << p
->second
.seq
2998 << " 0x" << std::hex
<< p
->first
<< "~" << p
->second
.bl
.length()
2999 << " -> 0x" << tail
.length() << std::dec
<< dendl
;
3000 auto &n
= iomap
[offset
+ length
];
3002 n
.seq
= p
->second
.seq
;
3003 i
->second
-= length
;
3005 i
->second
-= end
- offset
;
3007 assert(i
->second
>= 0);
3008 p
->second
.bl
.swap(head
);
3012 while (p
!= iomap
.end()) {
3013 if (p
->first
>= offset
+ length
) {
3016 auto i
= seq_bytes
.find(p
->second
.seq
);
3017 assert(i
!= seq_bytes
.end());
3018 auto end
= p
->first
+ p
->second
.bl
.length();
3019 if (end
> offset
+ length
) {
3020 unsigned drop_front
= offset
+ length
- p
->first
;
3021 unsigned keep_tail
= end
- (offset
+ length
);
3022 dout(20) << __func__
<< " truncate front " << p
->second
.seq
3023 << " 0x" << std::hex
<< p
->first
<< "~" << p
->second
.bl
.length()
3024 << " drop_front 0x" << drop_front
<< " keep_tail 0x" << keep_tail
3025 << " to 0x" << (offset
+ length
) << "~" << keep_tail
3026 << std::dec
<< dendl
;
3027 auto &s
= iomap
[offset
+ length
];
3028 s
.seq
= p
->second
.seq
;
3029 s
.bl
.substr_of(p
->second
.bl
, drop_front
, keep_tail
);
3030 i
->second
-= drop_front
;
3032 dout(20) << __func__
<< " drop " << p
->second
.seq
3033 << " 0x" << std::hex
<< p
->first
<< "~" << p
->second
.bl
.length()
3034 << std::dec
<< dendl
;
3035 i
->second
-= p
->second
.bl
.length();
3037 assert(i
->second
>= 0);
3042 void BlueStore::DeferredBatch::_audit(CephContext
*cct
)
3044 map
<uint64_t,int> sb
;
3045 for (auto p
: seq_bytes
) {
3046 sb
[p
.first
] = 0; // make sure we have the same set of keys
3049 for (auto& p
: iomap
) {
3050 assert(p
.first
>= pos
);
3051 sb
[p
.second
.seq
] += p
.second
.bl
.length();
3052 pos
= p
.first
+ p
.second
.bl
.length();
3054 assert(sb
== seq_bytes
);
3061 #define dout_prefix *_dout << "bluestore(" << store->path << ").collection(" << cid << " " << this << ") "
3063 BlueStore::Collection::Collection(BlueStore
*ns
, Cache
*c
, coll_t cid
)
3067 lock("BlueStore::Collection::lock", true, false),
3073 void BlueStore::Collection::open_shared_blob(uint64_t sbid
, BlobRef b
)
3075 assert(!b
->shared_blob
);
3076 const bluestore_blob_t
& blob
= b
->get_blob();
3077 if (!blob
.is_shared()) {
3078 b
->shared_blob
= new SharedBlob(this);
3082 b
->shared_blob
= shared_blob_set
.lookup(sbid
);
3083 if (b
->shared_blob
) {
3084 ldout(store
->cct
, 10) << __func__
<< " sbid 0x" << std::hex
<< sbid
3085 << std::dec
<< " had " << *b
->shared_blob
<< dendl
;
3087 b
->shared_blob
= new SharedBlob(sbid
, this);
3088 shared_blob_set
.add(this, b
->shared_blob
.get());
3089 ldout(store
->cct
, 10) << __func__
<< " sbid 0x" << std::hex
<< sbid
3090 << std::dec
<< " opened " << *b
->shared_blob
3095 void BlueStore::Collection::load_shared_blob(SharedBlobRef sb
)
3097 if (!sb
->is_loaded()) {
3101 auto sbid
= sb
->get_sbid();
3102 get_shared_blob_key(sbid
, &key
);
3103 int r
= store
->db
->get(PREFIX_SHARED_BLOB
, key
, &v
);
3105 lderr(store
->cct
) << __func__
<< " sbid 0x" << std::hex
<< sbid
3106 << std::dec
<< " not found at key "
3107 << pretty_binary_string(key
) << dendl
;
3108 assert(0 == "uh oh, missing shared_blob");
3112 sb
->persistent
= new bluestore_shared_blob_t(sbid
);
3113 bufferlist::iterator p
= v
.begin();
3114 ::decode(*(sb
->persistent
), p
);
3115 ldout(store
->cct
, 10) << __func__
<< " sbid 0x" << std::hex
<< sbid
3116 << std::dec
<< " loaded shared_blob " << *sb
<< dendl
;
3120 void BlueStore::Collection::make_blob_shared(uint64_t sbid
, BlobRef b
)
3122 ldout(store
->cct
, 10) << __func__
<< " " << *b
<< dendl
;
3123 assert(!b
->shared_blob
->is_loaded());
3126 bluestore_blob_t
& blob
= b
->dirty_blob();
3127 blob
.set_flag(bluestore_blob_t::FLAG_SHARED
);
3129 // update shared blob
3130 b
->shared_blob
->loaded
= true;
3131 b
->shared_blob
->persistent
= new bluestore_shared_blob_t(sbid
);
3132 shared_blob_set
.add(this, b
->shared_blob
.get());
3133 for (auto p
: blob
.get_extents()) {
3135 b
->shared_blob
->get_ref(
3140 ldout(store
->cct
, 20) << __func__
<< " now " << *b
<< dendl
;
3143 uint64_t BlueStore::Collection::make_blob_unshared(SharedBlob
*sb
)
3145 ldout(store
->cct
, 10) << __func__
<< " " << *sb
<< dendl
;
3146 assert(sb
->is_loaded());
3148 uint64_t sbid
= sb
->get_sbid();
3149 shared_blob_set
.remove(sb
);
3151 delete sb
->persistent
;
3152 sb
->sbid_unloaded
= 0;
3153 ldout(store
->cct
, 20) << __func__
<< " now " << *sb
<< dendl
;
3157 BlueStore::OnodeRef
BlueStore::Collection::get_onode(
3158 const ghobject_t
& oid
,
3161 assert(create
? lock
.is_wlocked() : lock
.is_locked());
3164 if (cid
.is_pg(&pgid
)) {
3165 if (!oid
.match(cnode
.bits
, pgid
.ps())) {
3166 lderr(store
->cct
) << __func__
<< " oid " << oid
<< " not part of "
3167 << pgid
<< " bits " << cnode
.bits
<< dendl
;
3172 OnodeRef o
= onode_map
.lookup(oid
);
3176 mempool::bluestore_cache_other::string key
;
3177 get_object_key(store
->cct
, oid
, &key
);
3179 ldout(store
->cct
, 20) << __func__
<< " oid " << oid
<< " key "
3180 << pretty_binary_string(key
) << dendl
;
3183 int r
= store
->db
->get(PREFIX_OBJ
, key
.c_str(), key
.size(), &v
);
3184 ldout(store
->cct
, 20) << " r " << r
<< " v.len " << v
.length() << dendl
;
3186 if (v
.length() == 0) {
3187 assert(r
== -ENOENT
);
3188 if (!store
->cct
->_conf
->bluestore_debug_misc
&&
3192 // new object, new onode
3193 on
= new Onode(this, oid
, key
);
3197 on
= new Onode(this, oid
, key
);
3199 bufferptr::iterator p
= v
.front().begin_deep();
3200 on
->onode
.decode(p
);
3201 for (auto& i
: on
->onode
.attrs
) {
3202 i
.second
.reassign_to_mempool(mempool::mempool_bluestore_cache_other
);
3205 // initialize extent_map
3206 on
->extent_map
.decode_spanning_blobs(p
);
3207 if (on
->onode
.extent_map_shards
.empty()) {
3208 denc(on
->extent_map
.inline_bl
, p
);
3209 on
->extent_map
.decode_some(on
->extent_map
.inline_bl
);
3210 on
->extent_map
.inline_bl
.reassign_to_mempool(
3211 mempool::mempool_bluestore_cache_other
);
3213 on
->extent_map
.init_shards(false, false);
3217 return onode_map
.add(oid
, o
);
3220 void BlueStore::Collection::split_cache(
3223 ldout(store
->cct
, 10) << __func__
<< " to " << dest
<< dendl
;
3225 // lock (one or both) cache shards
3226 std::lock(cache
->lock
, dest
->cache
->lock
);
3227 std::lock_guard
<std::recursive_mutex
> l(cache
->lock
, std::adopt_lock
);
3228 std::lock_guard
<std::recursive_mutex
> l2(dest
->cache
->lock
, std::adopt_lock
);
3230 int destbits
= dest
->cnode
.bits
;
3232 bool is_pg
= dest
->cid
.is_pg(&destpg
);
3235 auto p
= onode_map
.onode_map
.begin();
3236 while (p
!= onode_map
.onode_map
.end()) {
3237 if (!p
->second
->oid
.match(destbits
, destpg
.pgid
.ps())) {
3238 // onode does not belong to this child
3241 OnodeRef o
= p
->second
;
3242 ldout(store
->cct
, 20) << __func__
<< " moving " << o
<< " " << o
->oid
3245 cache
->_rm_onode(p
->second
);
3246 p
= onode_map
.onode_map
.erase(p
);
3249 dest
->cache
->_add_onode(o
, 1);
3250 dest
->onode_map
.onode_map
[o
->oid
] = o
;
3251 dest
->onode_map
.cache
= dest
->cache
;
3253 // move over shared blobs and buffers. cover shared blobs from
3254 // both extent map and spanning blob map (the full extent map
3255 // may not be faulted in)
3256 vector
<SharedBlob
*> sbvec
;
3257 for (auto& e
: o
->extent_map
.extent_map
) {
3258 sbvec
.push_back(e
.blob
->shared_blob
.get());
3260 for (auto& b
: o
->extent_map
.spanning_blob_map
) {
3261 sbvec
.push_back(b
.second
->shared_blob
.get());
3263 for (auto sb
: sbvec
) {
3264 if (sb
->coll
== dest
) {
3265 ldout(store
->cct
, 20) << __func__
<< " already moved " << *sb
3269 ldout(store
->cct
, 20) << __func__
<< " moving " << *sb
<< dendl
;
3270 if (sb
->get_sbid()) {
3271 ldout(store
->cct
, 20) << __func__
3272 << " moving registration " << *sb
<< dendl
;
3273 shared_blob_set
.remove(sb
);
3274 dest
->shared_blob_set
.add(dest
, sb
);
3277 if (dest
->cache
!= cache
) {
3278 for (auto& i
: sb
->bc
.buffer_map
) {
3279 if (!i
.second
->is_writing()) {
3280 ldout(store
->cct
, 20) << __func__
<< " moving " << *i
.second
3282 dest
->cache
->_move_buffer(cache
, i
.second
.get());
3291 // =======================================================
3296 #define dout_prefix *_dout << "bluestore.MempoolThread(" << this << ") "
3298 void *BlueStore::MempoolThread::entry()
3300 Mutex::Locker
l(lock
);
3302 std::list
<PriorityCache::PriCache
*> caches
;
3303 caches
.push_back(store
->db
);
3304 caches
.push_back(&meta_cache
);
3305 caches
.push_back(&data_cache
);
3306 autotune_cache_size
= store
->osd_memory_cache_min
;
3308 utime_t next_balance
= ceph_clock_now();
3309 utime_t next_resize
= ceph_clock_now();
3311 bool interval_stats_trim
= false;
3312 bool interval_stats_resize
= false;
3314 _adjust_cache_settings();
3316 // Before we trim, check and see if it's time to rebalance/resize.
3317 double autotune_interval
= store
->cache_autotune_interval
;
3318 double resize_interval
= store
->osd_memory_cache_resize_interval
;
3320 if (autotune_interval
> 0 && next_balance
< ceph_clock_now()) {
3321 // Log events at 5 instead of 20 when balance happens.
3322 interval_stats_resize
= true;
3323 interval_stats_trim
= true;
3324 if (store
->cache_autotune
) {
3325 _balance_cache(caches
);
3328 next_balance
= ceph_clock_now();
3329 next_balance
+= autotune_interval
;
3331 if (resize_interval
> 0 && next_resize
< ceph_clock_now()) {
3332 if (ceph_using_tcmalloc() && store
->cache_autotune
) {
3333 _tune_cache_size(interval_stats_resize
);
3334 interval_stats_resize
= false;
3336 next_resize
= ceph_clock_now();
3337 next_resize
+= resize_interval
;
3341 _trim_shards(interval_stats_trim
);
3342 interval_stats_trim
= false;
3344 store
->_update_cache_logger();
3346 wait
+= store
->cct
->_conf
->bluestore_cache_trim_interval
;
3347 cond
.WaitInterval(lock
, wait
);
3353 void BlueStore::MempoolThread::_adjust_cache_settings()
3355 store
->db
->set_cache_ratio(store
->cache_kv_ratio
);
3356 meta_cache
.set_cache_ratio(store
->cache_meta_ratio
);
3357 data_cache
.set_cache_ratio(store
->cache_data_ratio
);
3360 void BlueStore::MempoolThread::_trim_shards(bool interval_stats
)
3362 auto cct
= store
->cct
;
3363 size_t num_shards
= store
->cache_shards
.size();
3365 int64_t kv_used
= store
->db
->get_cache_usage();
3366 int64_t meta_used
= meta_cache
._get_used_bytes();
3367 int64_t data_used
= data_cache
._get_used_bytes();
3369 uint64_t cache_size
= store
->cache_size
;
3371 static_cast<int64_t>(store
->db
->get_cache_ratio() * cache_size
);
3372 int64_t meta_alloc
=
3373 static_cast<int64_t>(meta_cache
.get_cache_ratio() * cache_size
);
3374 int64_t data_alloc
=
3375 static_cast<int64_t>(data_cache
.get_cache_ratio() * cache_size
);
3377 if (store
->cache_autotune
) {
3378 cache_size
= autotune_cache_size
;
3380 kv_alloc
= store
->db
->get_cache_bytes();
3381 meta_alloc
= meta_cache
.get_cache_bytes();
3382 data_alloc
= data_cache
.get_cache_bytes();
3385 if (interval_stats
) {
3386 ldout(cct
, 5) << __func__
<< " cache_size: " << cache_size
3387 << " kv_alloc: " << kv_alloc
3388 << " kv_used: " << kv_used
3389 << " meta_alloc: " << meta_alloc
3390 << " meta_used: " << meta_used
3391 << " data_alloc: " << data_alloc
3392 << " data_used: " << data_used
<< dendl
;
3394 ldout(cct
, 20) << __func__
<< " cache_size: " << cache_size
3395 << " kv_alloc: " << kv_alloc
3396 << " kv_used: " << kv_used
3397 << " meta_alloc: " << meta_alloc
3398 << " meta_used: " << meta_used
3399 << " data_alloc: " << data_alloc
3400 << " data_used: " << data_used
<< dendl
;
3403 uint64_t max_shard_onodes
= static_cast<uint64_t>(
3404 (meta_alloc
/ (double) num_shards
) / meta_cache
.get_bytes_per_onode());
3405 uint64_t max_shard_buffer
= static_cast<uint64_t>(data_alloc
/ num_shards
);
3407 ldout(cct
, 30) << __func__
<< " max_shard_onodes: " << max_shard_onodes
3408 << " max_shard_buffer: " << max_shard_buffer
<< dendl
;
3410 for (auto i
: store
->cache_shards
) {
3411 i
->trim(max_shard_onodes
, max_shard_buffer
);
3415 void BlueStore::MempoolThread::_tune_cache_size(bool interval_stats
)
3417 auto cct
= store
->cct
;
3418 uint64_t target
= store
->osd_memory_target
;
3419 uint64_t base
= store
->osd_memory_base
;
3420 double fragmentation
= store
->osd_memory_expected_fragmentation
;
3421 uint64_t cache_max
= ((1.0 - fragmentation
) * target
) - base
;
3422 uint64_t cache_min
= store
->osd_memory_cache_min
;
3424 size_t heap_size
= 0;
3425 size_t unmapped
= 0;
3426 uint64_t mapped
= 0;
3428 ceph_heap_release_free_memory();
3429 ceph_heap_get_numeric_property("generic.heap_size", &heap_size
);
3430 ceph_heap_get_numeric_property("tcmalloc.pageheap_unmapped_bytes", &unmapped
);
3431 mapped
= heap_size
- unmapped
;
3433 uint64_t new_size
= autotune_cache_size
;
3434 new_size
= (new_size
< cache_max
) ? new_size
: cache_max
;
3435 new_size
= (new_size
> cache_min
) ? new_size
: cache_min
;
3437 // Approach the min/max slowly, but bounce away quickly.
3438 if ((uint64_t) mapped
< target
) {
3439 double ratio
= 1 - ((double) mapped
/ target
);
3440 new_size
+= ratio
* (cache_max
- new_size
);
3442 double ratio
= 1 - ((double) target
/ mapped
);
3443 new_size
-= ratio
* (new_size
- cache_min
);
3446 if (interval_stats
) {
3447 ldout(cct
, 5) << __func__
3448 << " target: " << target
3449 << " heap: " << heap_size
3450 << " unmapped: " << unmapped
3451 << " mapped: " << mapped
3452 << " old cache_size: " << autotune_cache_size
3453 << " new cache size: " << new_size
<< dendl
;
3455 ldout(cct
, 20) << __func__
3456 << " target: " << target
3457 << " heap: " << heap_size
3458 << " unmapped: " << unmapped
3459 << " mapped: " << mapped
3460 << " old cache_size: " << autotune_cache_size
3461 << " new cache size: " << new_size
<< dendl
;
3463 autotune_cache_size
= new_size
;
3466 void BlueStore::MempoolThread::_balance_cache(
3467 const std::list
<PriorityCache::PriCache
*>& caches
)
3469 int64_t mem_avail
= autotune_cache_size
;
3471 // Assign memory for each priority level
3472 for (int i
= 0; i
< PriorityCache::Priority::LAST
+ 1; i
++) {
3473 ldout(store
->cct
, 10) << __func__
<< " assigning cache bytes for PRI: " << i
<< dendl
;
3474 PriorityCache::Priority pri
= static_cast<PriorityCache::Priority
>(i
);
3475 _balance_cache_pri(&mem_avail
, caches
, pri
);
3477 // Assign any leftover memory based on the default ratios.
3478 if (mem_avail
> 0) {
3479 for (auto it
= caches
.begin(); it
!= caches
.end(); it
++) {
3480 int64_t fair_share
=
3481 static_cast<int64_t>((*it
)->get_cache_ratio() * mem_avail
);
3482 if (fair_share
> 0) {
3483 (*it
)->add_cache_bytes(PriorityCache::Priority::LAST
, fair_share
);
3487 // assert if we assigned more memory than is available.
3488 assert(mem_avail
>= 0);
3490 // Finally commit the new cache sizes
3491 for (auto it
= caches
.begin(); it
!= caches
.end(); it
++) {
3492 (*it
)->commit_cache_size();
3496 void BlueStore::MempoolThread::_balance_cache_pri(int64_t *mem_avail
,
3497 const std::list
<PriorityCache::PriCache
*>& caches
, PriorityCache::Priority pri
)
3499 std::list
<PriorityCache::PriCache
*> tmp_caches
= caches
;
3500 double cur_ratios
= 0;
3501 double new_ratios
= 0;
3503 // Zero this priority's bytes, sum the initial ratios.
3504 for (auto it
= tmp_caches
.begin(); it
!= tmp_caches
.end(); it
++) {
3505 (*it
)->set_cache_bytes(pri
, 0);
3506 cur_ratios
+= (*it
)->get_cache_ratio();
3509 // For this priority, loop until caches are satisified or we run out of memory.
3510 // Since we can't allocate fractional bytes, stop if we have fewer bytes left
3511 // than the number of participating caches.
3512 while (!tmp_caches
.empty() && *mem_avail
> static_cast<int64_t>(tmp_caches
.size())) {
3513 uint64_t total_assigned
= 0;
3515 for (auto it
= tmp_caches
.begin(); it
!= tmp_caches
.end(); ) {
3516 int64_t cache_wants
= (*it
)->request_cache_bytes(pri
, store
->cache_autotune_chunk_size
);
3518 // Usually the ratio should be set to the fraction of the current caches'
3519 // assigned ratio compared to the total ratio of all caches that still
3520 // want memory. There is a special case where the only caches left are
3521 // all assigned 0% ratios but still want memory. In that case, give
3522 // them an equal shot at the remaining memory for this priority.
3523 double ratio
= 1.0 / tmp_caches
.size();
3524 if (cur_ratios
> 0) {
3525 ratio
= (*it
)->get_cache_ratio() / cur_ratios
;
3527 int64_t fair_share
= static_cast<int64_t>(*mem_avail
* ratio
);
3529 if (cache_wants
> fair_share
) {
3530 // If we want too much, take what we can get but stick around for more
3531 (*it
)->add_cache_bytes(pri
, fair_share
);
3532 total_assigned
+= fair_share
;
3534 new_ratios
+= (*it
)->get_cache_ratio();
3535 ldout(store
->cct
, 20) << __func__
<< " " << (*it
)->get_cache_name()
3536 << " wanted: " << cache_wants
<< " fair_share: " << fair_share
3537 << " mem_avail: " << *mem_avail
3538 << " staying in list. Size: " << tmp_caches
.size()
3542 // Otherwise assign only what we want
3543 if (cache_wants
> 0) {
3544 (*it
)->add_cache_bytes(pri
, cache_wants
);
3545 total_assigned
+= cache_wants
;
3547 ldout(store
->cct
, 20) << __func__
<< " " << (*it
)->get_cache_name()
3548 << " wanted: " << cache_wants
<< " fair_share: " << fair_share
3549 << " mem_avail: " << *mem_avail
3550 << " removing from list. New size: " << tmp_caches
.size() - 1
3554 // Either the cache didn't want anything or got what it wanted, so remove it from the tmp list.
3555 it
= tmp_caches
.erase(it
);
3559 *mem_avail
-= total_assigned
;
3560 cur_ratios
= new_ratios
;
3565 // =======================================================
3570 #define dout_prefix *_dout << "bluestore.OmapIteratorImpl(" << this << ") "
3572 BlueStore::OmapIteratorImpl::OmapIteratorImpl(
3573 CollectionRef c
, OnodeRef o
, KeyValueDB::Iterator it
)
3574 : c(c
), o(o
), it(it
)
3576 RWLock::RLocker
l(c
->lock
);
3577 if (o
->onode
.has_omap()) {
3578 get_omap_key(o
->onode
.nid
, string(), &head
);
3579 get_omap_tail(o
->onode
.nid
, &tail
);
3580 it
->lower_bound(head
);
3584 int BlueStore::OmapIteratorImpl::seek_to_first()
3586 RWLock::RLocker
l(c
->lock
);
3587 if (o
->onode
.has_omap()) {
3588 it
->lower_bound(head
);
3590 it
= KeyValueDB::Iterator();
3595 int BlueStore::OmapIteratorImpl::upper_bound(const string
& after
)
3597 RWLock::RLocker
l(c
->lock
);
3598 if (o
->onode
.has_omap()) {
3600 get_omap_key(o
->onode
.nid
, after
, &key
);
3601 ldout(c
->store
->cct
,20) << __func__
<< " after " << after
<< " key "
3602 << pretty_binary_string(key
) << dendl
;
3603 it
->upper_bound(key
);
3605 it
= KeyValueDB::Iterator();
3610 int BlueStore::OmapIteratorImpl::lower_bound(const string
& to
)
3612 RWLock::RLocker
l(c
->lock
);
3613 if (o
->onode
.has_omap()) {
3615 get_omap_key(o
->onode
.nid
, to
, &key
);
3616 ldout(c
->store
->cct
,20) << __func__
<< " to " << to
<< " key "
3617 << pretty_binary_string(key
) << dendl
;
3618 it
->lower_bound(key
);
3620 it
= KeyValueDB::Iterator();
3625 bool BlueStore::OmapIteratorImpl::valid()
3627 RWLock::RLocker
l(c
->lock
);
3628 bool r
= o
->onode
.has_omap() && it
&& it
->valid() &&
3629 it
->raw_key().second
<= tail
;
3630 if (it
&& it
->valid()) {
3631 ldout(c
->store
->cct
,20) << __func__
<< " is at "
3632 << pretty_binary_string(it
->raw_key().second
)
3638 int BlueStore::OmapIteratorImpl::next(bool validate
)
3640 RWLock::RLocker
l(c
->lock
);
3641 if (o
->onode
.has_omap()) {
3649 string
BlueStore::OmapIteratorImpl::key()
3651 RWLock::RLocker
l(c
->lock
);
3652 assert(it
->valid());
3653 string db_key
= it
->raw_key().second
;
3655 decode_omap_key(db_key
, &user_key
);
3659 bufferlist
BlueStore::OmapIteratorImpl::value()
3661 RWLock::RLocker
l(c
->lock
);
3662 assert(it
->valid());
3667 // =====================================
3670 #define dout_prefix *_dout << "bluestore(" << path << ") "
3673 static void aio_cb(void *priv
, void *priv2
)
3675 BlueStore
*store
= static_cast<BlueStore
*>(priv
);
3676 BlueStore::AioContext
*c
= static_cast<BlueStore::AioContext
*>(priv2
);
3677 c
->aio_finish(store
);
3680 BlueStore::BlueStore(CephContext
*cct
, const string
& path
)
3681 : ObjectStore(cct
, path
),
3682 throttle_bytes(cct
, "bluestore_throttle_bytes",
3683 cct
->_conf
->bluestore_throttle_bytes
),
3684 throttle_deferred_bytes(cct
, "bluestore_throttle_deferred_bytes",
3685 cct
->_conf
->bluestore_throttle_bytes
+
3686 cct
->_conf
->bluestore_throttle_deferred_bytes
),
3687 deferred_finisher(cct
, "defered_finisher", "dfin"),
3688 kv_sync_thread(this),
3689 kv_finalize_thread(this),
3690 mempool_thread(this)
3693 cct
->_conf
->add_observer(this);
3694 set_cache_shards(1);
3697 BlueStore::BlueStore(CephContext
*cct
,
3699 uint64_t _min_alloc_size
)
3700 : ObjectStore(cct
, path
),
3701 throttle_bytes(cct
, "bluestore_throttle_bytes",
3702 cct
->_conf
->bluestore_throttle_bytes
),
3703 throttle_deferred_bytes(cct
, "bluestore_throttle_deferred_bytes",
3704 cct
->_conf
->bluestore_throttle_bytes
+
3705 cct
->_conf
->bluestore_throttle_deferred_bytes
),
3706 deferred_finisher(cct
, "defered_finisher", "dfin"),
3707 kv_sync_thread(this),
3708 kv_finalize_thread(this),
3709 min_alloc_size(_min_alloc_size
),
3710 min_alloc_size_order(ctz(_min_alloc_size
)),
3711 mempool_thread(this)
3714 cct
->_conf
->add_observer(this);
3715 set_cache_shards(1);
3718 BlueStore::~BlueStore()
3720 for (auto f
: finishers
) {
3725 cct
->_conf
->remove_observer(this);
3729 assert(bluefs
== NULL
);
3730 assert(fsid_fd
< 0);
3731 assert(path_fd
< 0);
3732 for (auto i
: cache_shards
) {
3735 cache_shards
.clear();
3738 const char **BlueStore::get_tracked_conf_keys() const
3740 static const char* KEYS
[] = {
3741 "bluestore_csum_type",
3742 "bluestore_compression_mode",
3743 "bluestore_compression_algorithm",
3744 "bluestore_compression_min_blob_size",
3745 "bluestore_compression_min_blob_size_ssd",
3746 "bluestore_compression_min_blob_size_hdd",
3747 "bluestore_compression_max_blob_size",
3748 "bluestore_compression_max_blob_size_ssd",
3749 "bluestore_compression_max_blob_size_hdd",
3750 "bluestore_compression_required_ratio",
3751 "bluestore_max_alloc_size",
3752 "bluestore_prefer_deferred_size",
3753 "bluestore_prefer_deferred_size_hdd",
3754 "bluestore_prefer_deferred_size_ssd",
3755 "bluestore_deferred_batch_ops",
3756 "bluestore_deferred_batch_ops_hdd",
3757 "bluestore_deferred_batch_ops_ssd",
3758 "bluestore_throttle_bytes",
3759 "bluestore_throttle_deferred_bytes",
3760 "bluestore_throttle_cost_per_io_hdd",
3761 "bluestore_throttle_cost_per_io_ssd",
3762 "bluestore_throttle_cost_per_io",
3763 "bluestore_max_blob_size",
3764 "bluestore_max_blob_size_ssd",
3765 "bluestore_max_blob_size_hdd",
3771 void BlueStore::handle_conf_change(const struct md_config_t
*conf
,
3772 const std::set
<std::string
> &changed
)
3774 if (changed
.count("bluestore_csum_type")) {
3777 if (changed
.count("bluestore_compression_mode") ||
3778 changed
.count("bluestore_compression_algorithm") ||
3779 changed
.count("bluestore_compression_min_blob_size") ||
3780 changed
.count("bluestore_compression_max_blob_size")) {
3785 if (changed
.count("bluestore_max_blob_size") ||
3786 changed
.count("bluestore_max_blob_size_ssd") ||
3787 changed
.count("bluestore_max_blob_size_hdd")) {
3789 // only after startup
3793 if (changed
.count("bluestore_prefer_deferred_size") ||
3794 changed
.count("bluestore_prefer_deferred_size_hdd") ||
3795 changed
.count("bluestore_prefer_deferred_size_ssd") ||
3796 changed
.count("bluestore_max_alloc_size") ||
3797 changed
.count("bluestore_deferred_batch_ops") ||
3798 changed
.count("bluestore_deferred_batch_ops_hdd") ||
3799 changed
.count("bluestore_deferred_batch_ops_ssd")) {
3801 // only after startup
3805 if (changed
.count("bluestore_throttle_cost_per_io") ||
3806 changed
.count("bluestore_throttle_cost_per_io_hdd") ||
3807 changed
.count("bluestore_throttle_cost_per_io_ssd")) {
3809 _set_throttle_params();
3812 if (changed
.count("bluestore_throttle_bytes")) {
3813 throttle_bytes
.reset_max(conf
->bluestore_throttle_bytes
);
3814 throttle_deferred_bytes
.reset_max(
3815 conf
->bluestore_throttle_bytes
+ conf
->bluestore_throttle_deferred_bytes
);
3817 if (changed
.count("bluestore_throttle_deferred_bytes")) {
3818 throttle_deferred_bytes
.reset_max(
3819 conf
->bluestore_throttle_bytes
+ conf
->bluestore_throttle_deferred_bytes
);
3823 void BlueStore::_set_compression()
3825 auto m
= Compressor::get_comp_mode_type(cct
->_conf
->bluestore_compression_mode
);
3829 derr
<< __func__
<< " unrecognized value '"
3830 << cct
->_conf
->bluestore_compression_mode
3831 << "' for bluestore_compression_mode, reverting to 'none'"
3833 comp_mode
= Compressor::COMP_NONE
;
3836 compressor
= nullptr;
3838 if (comp_mode
== Compressor::COMP_NONE
) {
3839 dout(10) << __func__
<< " compression mode set to 'none', "
3840 << "ignore other compression setttings" << dendl
;
3844 if (cct
->_conf
->bluestore_compression_min_blob_size
) {
3845 comp_min_blob_size
= cct
->_conf
->bluestore_compression_min_blob_size
;
3848 if (bdev
->is_rotational()) {
3849 comp_min_blob_size
= cct
->_conf
->bluestore_compression_min_blob_size_hdd
;
3851 comp_min_blob_size
= cct
->_conf
->bluestore_compression_min_blob_size_ssd
;
3855 if (cct
->_conf
->bluestore_compression_max_blob_size
) {
3856 comp_max_blob_size
= cct
->_conf
->bluestore_compression_max_blob_size
;
3859 if (bdev
->is_rotational()) {
3860 comp_max_blob_size
= cct
->_conf
->bluestore_compression_max_blob_size_hdd
;
3862 comp_max_blob_size
= cct
->_conf
->bluestore_compression_max_blob_size_ssd
;
3866 auto& alg_name
= cct
->_conf
->bluestore_compression_algorithm
;
3867 if (!alg_name
.empty()) {
3868 compressor
= Compressor::create(cct
, alg_name
);
3870 derr
<< __func__
<< " unable to initialize " << alg_name
.c_str() << " compressor"
3875 dout(10) << __func__
<< " mode " << Compressor::get_comp_mode_name(comp_mode
)
3876 << " alg " << (compressor
? compressor
->get_type_name() : "(none)")
3880 void BlueStore::_set_csum()
3882 csum_type
= Checksummer::CSUM_NONE
;
3883 int t
= Checksummer::get_csum_string_type(cct
->_conf
->bluestore_csum_type
);
3884 if (t
> Checksummer::CSUM_NONE
)
3887 dout(10) << __func__
<< " csum_type "
3888 << Checksummer::get_csum_type_string(csum_type
)
3892 void BlueStore::_set_throttle_params()
3894 if (cct
->_conf
->bluestore_throttle_cost_per_io
) {
3895 throttle_cost_per_io
= cct
->_conf
->bluestore_throttle_cost_per_io
;
3898 if (bdev
->is_rotational()) {
3899 throttle_cost_per_io
= cct
->_conf
->bluestore_throttle_cost_per_io_hdd
;
3901 throttle_cost_per_io
= cct
->_conf
->bluestore_throttle_cost_per_io_ssd
;
3905 dout(10) << __func__
<< " throttle_cost_per_io " << throttle_cost_per_io
3908 void BlueStore::_set_blob_size()
3910 if (cct
->_conf
->bluestore_max_blob_size
) {
3911 max_blob_size
= cct
->_conf
->bluestore_max_blob_size
;
3914 if (bdev
->is_rotational()) {
3915 max_blob_size
= cct
->_conf
->bluestore_max_blob_size_hdd
;
3917 max_blob_size
= cct
->_conf
->bluestore_max_blob_size_ssd
;
3920 dout(10) << __func__
<< " max_blob_size 0x" << std::hex
<< max_blob_size
3921 << std::dec
<< dendl
;
3924 void BlueStore::_set_finisher_num()
3926 if (cct
->_conf
->bluestore_shard_finishers
) {
3927 if (cct
->_conf
->osd_op_num_shards
) {
3928 m_finisher_num
= cct
->_conf
->osd_op_num_shards
;
3931 if (bdev
->is_rotational()) {
3932 m_finisher_num
= cct
->_conf
->osd_op_num_shards_hdd
;
3934 m_finisher_num
= cct
->_conf
->osd_op_num_shards_ssd
;
3938 assert(m_finisher_num
!= 0);
3941 int BlueStore::_set_cache_sizes()
3944 cache_autotune
= cct
->_conf
->get_val
<bool>("bluestore_cache_autotune");
3945 cache_autotune_chunk_size
=
3946 cct
->_conf
->get_val
<uint64_t>("bluestore_cache_autotune_chunk_size");
3947 cache_autotune_interval
=
3948 cct
->_conf
->get_val
<double>("bluestore_cache_autotune_interval");
3949 osd_memory_target
= cct
->_conf
->get_val
<uint64_t>("osd_memory_target");
3950 osd_memory_base
= cct
->_conf
->get_val
<uint64_t>("osd_memory_base");
3951 osd_memory_expected_fragmentation
=
3952 cct
->_conf
->get_val
<double>("osd_memory_expected_fragmentation");
3953 osd_memory_cache_min
= cct
->_conf
->get_val
<uint64_t>("osd_memory_cache_min");
3954 osd_memory_cache_resize_interval
=
3955 cct
->_conf
->get_val
<double>("osd_memory_cache_resize_interval");
3957 if (cct
->_conf
->bluestore_cache_size
) {
3958 cache_size
= cct
->_conf
->bluestore_cache_size
;
3960 // choose global cache size based on backend type
3961 if (bdev
->is_rotational()) {
3962 cache_size
= cct
->_conf
->bluestore_cache_size_hdd
;
3964 cache_size
= cct
->_conf
->bluestore_cache_size_ssd
;
3968 cache_meta_ratio
= cct
->_conf
->bluestore_cache_meta_ratio
;
3969 if (cache_meta_ratio
< 0 || cache_meta_ratio
> 1.0) {
3970 derr
<< __func__
<< " bluestore_cache_meta_ratio (" << cache_meta_ratio
3971 << ") must be in range [0,1.0]" << dendl
;
3975 cache_kv_ratio
= cct
->_conf
->bluestore_cache_kv_ratio
;
3976 if (cache_kv_ratio
< 0 || cache_kv_ratio
> 1.0) {
3977 derr
<< __func__
<< " bluestore_cache_kv_ratio (" << cache_kv_ratio
3978 << ") must be in range [0,1.0]" << dendl
;
3982 if (cache_meta_ratio
+ cache_kv_ratio
> 1.0) {
3983 derr
<< __func__
<< " bluestore_cache_meta_ratio (" << cache_meta_ratio
3984 << ") + bluestore_cache_kv_ratio (" << cache_kv_ratio
3985 << ") = " << cache_meta_ratio
+ cache_kv_ratio
<< "; must be <= 1.0"
3991 (double)1.0 - (double)cache_meta_ratio
- (double)cache_kv_ratio
;
3992 if (cache_data_ratio
< 0) {
3993 // deal with floating point imprecision
3994 cache_data_ratio
= 0;
3997 dout(1) << __func__
<< " cache_size " << cache_size
3998 << " meta " << cache_meta_ratio
3999 << " kv " << cache_kv_ratio
4000 << " data " << cache_data_ratio
4005 int BlueStore::write_meta(const std::string
& key
, const std::string
& value
)
4007 bluestore_bdev_label_t label
;
4008 string p
= path
+ "/block";
4009 int r
= _read_bdev_label(cct
, p
, &label
);
4011 return ObjectStore::write_meta(key
, value
);
4013 label
.meta
[key
] = value
;
4014 r
= _write_bdev_label(cct
, p
, label
);
4016 return ObjectStore::write_meta(key
, value
);
4019 int BlueStore::read_meta(const std::string
& key
, std::string
*value
)
4021 bluestore_bdev_label_t label
;
4022 string p
= path
+ "/block";
4023 int r
= _read_bdev_label(cct
, p
, &label
);
4025 return ObjectStore::read_meta(key
, value
);
4027 auto i
= label
.meta
.find(key
);
4028 if (i
== label
.meta
.end()) {
4029 return ObjectStore::read_meta(key
, value
);
4035 void BlueStore::_init_logger()
4037 PerfCountersBuilder
b(cct
, "bluestore",
4038 l_bluestore_first
, l_bluestore_last
);
4039 b
.add_time_avg(l_bluestore_kv_flush_lat
, "kv_flush_lat",
4040 "Average kv_thread flush latency",
4041 "fl_l", PerfCountersBuilder::PRIO_INTERESTING
);
4042 b
.add_time_avg(l_bluestore_kv_commit_lat
, "kv_commit_lat",
4043 "Average kv_thread commit latency");
4044 b
.add_time_avg(l_bluestore_kv_lat
, "kv_lat",
4045 "Average kv_thread sync latency",
4046 "k_l", PerfCountersBuilder::PRIO_INTERESTING
);
4047 b
.add_time_avg(l_bluestore_state_prepare_lat
, "state_prepare_lat",
4048 "Average prepare state latency");
4049 b
.add_time_avg(l_bluestore_state_aio_wait_lat
, "state_aio_wait_lat",
4050 "Average aio_wait state latency",
4051 "io_l", PerfCountersBuilder::PRIO_INTERESTING
);
4052 b
.add_time_avg(l_bluestore_state_io_done_lat
, "state_io_done_lat",
4053 "Average io_done state latency");
4054 b
.add_time_avg(l_bluestore_state_kv_queued_lat
, "state_kv_queued_lat",
4055 "Average kv_queued state latency");
4056 b
.add_time_avg(l_bluestore_state_kv_committing_lat
, "state_kv_commiting_lat",
4057 "Average kv_commiting state latency");
4058 b
.add_time_avg(l_bluestore_state_kv_done_lat
, "state_kv_done_lat",
4059 "Average kv_done state latency");
4060 b
.add_time_avg(l_bluestore_state_deferred_queued_lat
, "state_deferred_queued_lat",
4061 "Average deferred_queued state latency");
4062 b
.add_time_avg(l_bluestore_state_deferred_aio_wait_lat
, "state_deferred_aio_wait_lat",
4063 "Average aio_wait state latency");
4064 b
.add_time_avg(l_bluestore_state_deferred_cleanup_lat
, "state_deferred_cleanup_lat",
4065 "Average cleanup state latency");
4066 b
.add_time_avg(l_bluestore_state_finishing_lat
, "state_finishing_lat",
4067 "Average finishing state latency");
4068 b
.add_time_avg(l_bluestore_state_done_lat
, "state_done_lat",
4069 "Average done state latency");
4070 b
.add_time_avg(l_bluestore_throttle_lat
, "throttle_lat",
4071 "Average submit throttle latency",
4072 "th_l", PerfCountersBuilder::PRIO_CRITICAL
);
4073 b
.add_time_avg(l_bluestore_submit_lat
, "submit_lat",
4074 "Average submit latency",
4075 "s_l", PerfCountersBuilder::PRIO_CRITICAL
);
4076 b
.add_time_avg(l_bluestore_commit_lat
, "commit_lat",
4077 "Average commit latency",
4078 "c_l", PerfCountersBuilder::PRIO_CRITICAL
);
4079 b
.add_time_avg(l_bluestore_read_lat
, "read_lat",
4080 "Average read latency",
4081 "r_l", PerfCountersBuilder::PRIO_CRITICAL
);
4082 b
.add_time_avg(l_bluestore_read_onode_meta_lat
, "read_onode_meta_lat",
4083 "Average read onode metadata latency");
4084 b
.add_time_avg(l_bluestore_read_wait_aio_lat
, "read_wait_aio_lat",
4085 "Average read latency");
4086 b
.add_time_avg(l_bluestore_compress_lat
, "compress_lat",
4087 "Average compress latency");
4088 b
.add_time_avg(l_bluestore_decompress_lat
, "decompress_lat",
4089 "Average decompress latency");
4090 b
.add_time_avg(l_bluestore_csum_lat
, "csum_lat",
4091 "Average checksum latency");
4092 b
.add_u64_counter(l_bluestore_compress_success_count
, "compress_success_count",
4093 "Sum for beneficial compress ops");
4094 b
.add_u64_counter(l_bluestore_compress_rejected_count
, "compress_rejected_count",
4095 "Sum for compress ops rejected due to low net gain of space");
4096 b
.add_u64_counter(l_bluestore_write_pad_bytes
, "write_pad_bytes",
4097 "Sum for write-op padded bytes", NULL
, 0, unit_t(BYTES
));
4098 b
.add_u64_counter(l_bluestore_deferred_write_ops
, "deferred_write_ops",
4099 "Sum for deferred write op");
4100 b
.add_u64_counter(l_bluestore_deferred_write_bytes
, "deferred_write_bytes",
4101 "Sum for deferred write bytes", "def", 0, unit_t(BYTES
));
4102 b
.add_u64_counter(l_bluestore_write_penalty_read_ops
, "write_penalty_read_ops",
4103 "Sum for write penalty read ops");
4104 b
.add_u64(l_bluestore_allocated
, "bluestore_allocated",
4105 "Sum for allocated bytes");
4106 b
.add_u64(l_bluestore_stored
, "bluestore_stored",
4107 "Sum for stored bytes");
4108 b
.add_u64(l_bluestore_compressed
, "bluestore_compressed",
4109 "Sum for stored compressed bytes");
4110 b
.add_u64(l_bluestore_compressed_allocated
, "bluestore_compressed_allocated",
4111 "Sum for bytes allocated for compressed data");
4112 b
.add_u64(l_bluestore_compressed_original
, "bluestore_compressed_original",
4113 "Sum for original bytes that were compressed");
4115 b
.add_u64(l_bluestore_onodes
, "bluestore_onodes",
4116 "Number of onodes in cache");
4117 b
.add_u64_counter(l_bluestore_onode_hits
, "bluestore_onode_hits",
4118 "Sum for onode-lookups hit in the cache");
4119 b
.add_u64_counter(l_bluestore_onode_misses
, "bluestore_onode_misses",
4120 "Sum for onode-lookups missed in the cache");
4121 b
.add_u64_counter(l_bluestore_onode_shard_hits
, "bluestore_onode_shard_hits",
4122 "Sum for onode-shard lookups hit in the cache");
4123 b
.add_u64_counter(l_bluestore_onode_shard_misses
,
4124 "bluestore_onode_shard_misses",
4125 "Sum for onode-shard lookups missed in the cache");
4126 b
.add_u64(l_bluestore_extents
, "bluestore_extents",
4127 "Number of extents in cache");
4128 b
.add_u64(l_bluestore_blobs
, "bluestore_blobs",
4129 "Number of blobs in cache");
4130 b
.add_u64(l_bluestore_buffers
, "bluestore_buffers",
4131 "Number of buffers in cache");
4132 b
.add_u64(l_bluestore_buffer_bytes
, "bluestore_buffer_bytes",
4133 "Number of buffer bytes in cache", NULL
, 0, unit_t(BYTES
));
4134 b
.add_u64_counter(l_bluestore_buffer_hit_bytes
, "bluestore_buffer_hit_bytes",
4135 "Sum for bytes of read hit in the cache", NULL
, 0, unit_t(BYTES
));
4136 b
.add_u64_counter(l_bluestore_buffer_miss_bytes
, "bluestore_buffer_miss_bytes",
4137 "Sum for bytes of read missed in the cache", NULL
, 0, unit_t(BYTES
));
4139 b
.add_u64_counter(l_bluestore_write_big
, "bluestore_write_big",
4140 "Large aligned writes into fresh blobs");
4141 b
.add_u64_counter(l_bluestore_write_big_bytes
, "bluestore_write_big_bytes",
4142 "Large aligned writes into fresh blobs (bytes)", NULL
, 0, unit_t(BYTES
));
4143 b
.add_u64_counter(l_bluestore_write_big_blobs
, "bluestore_write_big_blobs",
4144 "Large aligned writes into fresh blobs (blobs)");
4145 b
.add_u64_counter(l_bluestore_write_small
, "bluestore_write_small",
4146 "Small writes into existing or sparse small blobs");
4147 b
.add_u64_counter(l_bluestore_write_small_bytes
, "bluestore_write_small_bytes",
4148 "Small writes into existing or sparse small blobs (bytes)", NULL
, 0, unit_t(BYTES
));
4149 b
.add_u64_counter(l_bluestore_write_small_unused
,
4150 "bluestore_write_small_unused",
4151 "Small writes into unused portion of existing blob");
4152 b
.add_u64_counter(l_bluestore_write_small_deferred
,
4153 "bluestore_write_small_deferred",
4154 "Small overwrites using deferred");
4155 b
.add_u64_counter(l_bluestore_write_small_pre_read
,
4156 "bluestore_write_small_pre_read",
4157 "Small writes that required we read some data (possibly "
4158 "cached) to fill out the block");
4159 b
.add_u64_counter(l_bluestore_write_small_new
, "bluestore_write_small_new",
4160 "Small write into new (sparse) blob");
4162 b
.add_u64_counter(l_bluestore_txc
, "bluestore_txc", "Transactions committed");
4163 b
.add_u64_counter(l_bluestore_onode_reshard
, "bluestore_onode_reshard",
4164 "Onode extent map reshard events");
4165 b
.add_u64_counter(l_bluestore_blob_split
, "bluestore_blob_split",
4166 "Sum for blob splitting due to resharding");
4167 b
.add_u64_counter(l_bluestore_extent_compress
, "bluestore_extent_compress",
4168 "Sum for extents that have been removed due to compression");
4169 b
.add_u64_counter(l_bluestore_gc_merged
, "bluestore_gc_merged",
4170 "Sum for extents that have been merged due to garbage "
4172 b
.add_u64_counter(l_bluestore_read_eio
, "bluestore_read_eio",
4173 "Read EIO errors propagated to high level callers");
4174 logger
= b
.create_perf_counters();
4175 cct
->get_perfcounters_collection()->add(logger
);
4178 int BlueStore::_reload_logger()
4180 struct store_statfs_t store_statfs
;
4182 int r
= statfs(&store_statfs
);
4184 logger
->set(l_bluestore_allocated
, store_statfs
.allocated
);
4185 logger
->set(l_bluestore_stored
, store_statfs
.stored
);
4186 logger
->set(l_bluestore_compressed
, store_statfs
.compressed
);
4187 logger
->set(l_bluestore_compressed_allocated
, store_statfs
.compressed_allocated
);
4188 logger
->set(l_bluestore_compressed_original
, store_statfs
.compressed_original
);
4193 void BlueStore::_shutdown_logger()
4195 cct
->get_perfcounters_collection()->remove(logger
);
4199 int BlueStore::get_block_device_fsid(CephContext
* cct
, const string
& path
,
4202 bluestore_bdev_label_t label
;
4203 int r
= _read_bdev_label(cct
, path
, &label
);
4206 *fsid
= label
.osd_uuid
;
4210 int BlueStore::_open_path()
4213 if (cct
->_conf
->get_val
<uint64_t>("osd_max_object_size") >=
4214 4*1024*1024*1024ull) {
4215 derr
<< __func__
<< " osd_max_object_size >= 4GB; BlueStore has hard limit of 4GB." << dendl
;
4218 assert(path_fd
< 0);
4219 path_fd
= TEMP_FAILURE_RETRY(::open(path
.c_str(), O_DIRECTORY
|O_CLOEXEC
));
4222 derr
<< __func__
<< " unable to open " << path
<< ": " << cpp_strerror(r
)
4229 void BlueStore::_close_path()
4231 VOID_TEMP_FAILURE_RETRY(::close(path_fd
));
4235 int BlueStore::_write_bdev_label(CephContext
*cct
,
4236 string path
, bluestore_bdev_label_t label
)
4238 dout(10) << __func__
<< " path " << path
<< " label " << label
<< dendl
;
4240 ::encode(label
, bl
);
4241 uint32_t crc
= bl
.crc32c(-1);
4243 assert(bl
.length() <= BDEV_LABEL_BLOCK_SIZE
);
4244 bufferptr
z(BDEV_LABEL_BLOCK_SIZE
- bl
.length());
4246 bl
.append(std::move(z
));
4248 int fd
= TEMP_FAILURE_RETRY(::open(path
.c_str(), O_WRONLY
|O_CLOEXEC
));
4251 derr
<< __func__
<< " failed to open " << path
<< ": " << cpp_strerror(fd
)
4255 int r
= bl
.write_fd(fd
);
4257 derr
<< __func__
<< " failed to write to " << path
4258 << ": " << cpp_strerror(r
) << dendl
;
4262 derr
<< __func__
<< " failed to fsync " << path
4263 << ": " << cpp_strerror(r
) << dendl
;
4265 VOID_TEMP_FAILURE_RETRY(::close(fd
));
4269 int BlueStore::_read_bdev_label(CephContext
* cct
, string path
,
4270 bluestore_bdev_label_t
*label
)
4272 dout(10) << __func__
<< dendl
;
4273 int fd
= TEMP_FAILURE_RETRY(::open(path
.c_str(), O_RDONLY
|O_CLOEXEC
));
4276 derr
<< __func__
<< " failed to open " << path
<< ": " << cpp_strerror(fd
)
4281 int r
= bl
.read_fd(fd
, BDEV_LABEL_BLOCK_SIZE
);
4282 VOID_TEMP_FAILURE_RETRY(::close(fd
));
4284 derr
<< __func__
<< " failed to read from " << path
4285 << ": " << cpp_strerror(r
) << dendl
;
4289 uint32_t crc
, expected_crc
;
4290 bufferlist::iterator p
= bl
.begin();
4292 ::decode(*label
, p
);
4294 t
.substr_of(bl
, 0, p
.get_off());
4296 ::decode(expected_crc
, p
);
4298 catch (buffer::error
& e
) {
4299 dout(2) << __func__
<< " unable to decode label at offset " << p
.get_off()
4304 if (crc
!= expected_crc
) {
4305 derr
<< __func__
<< " bad crc on label, expected " << expected_crc
4306 << " != actual " << crc
<< dendl
;
4309 dout(10) << __func__
<< " got " << *label
<< dendl
;
4313 int BlueStore::_check_or_set_bdev_label(
4314 string path
, uint64_t size
, string desc
, bool create
)
4316 bluestore_bdev_label_t label
;
4318 label
.osd_uuid
= fsid
;
4320 label
.btime
= ceph_clock_now();
4321 label
.description
= desc
;
4322 int r
= _write_bdev_label(cct
, path
, label
);
4326 int r
= _read_bdev_label(cct
, path
, &label
);
4329 if (cct
->_conf
->bluestore_debug_permit_any_bdev_label
) {
4330 dout(20) << __func__
<< " bdev " << path
<< " fsid " << label
.osd_uuid
4331 << " and fsid " << fsid
<< " check bypassed" << dendl
;
4333 else if (label
.osd_uuid
!= fsid
) {
4334 derr
<< __func__
<< " bdev " << path
<< " fsid " << label
.osd_uuid
4335 << " does not match our fsid " << fsid
<< dendl
;
4342 void BlueStore::_set_alloc_sizes(void)
4344 max_alloc_size
= cct
->_conf
->bluestore_max_alloc_size
;
4346 if (cct
->_conf
->bluestore_prefer_deferred_size
) {
4347 prefer_deferred_size
= cct
->_conf
->bluestore_prefer_deferred_size
;
4350 if (bdev
->is_rotational()) {
4351 prefer_deferred_size
= cct
->_conf
->bluestore_prefer_deferred_size_hdd
;
4353 prefer_deferred_size
= cct
->_conf
->bluestore_prefer_deferred_size_ssd
;
4357 if (cct
->_conf
->bluestore_deferred_batch_ops
) {
4358 deferred_batch_ops
= cct
->_conf
->bluestore_deferred_batch_ops
;
4361 if (bdev
->is_rotational()) {
4362 deferred_batch_ops
= cct
->_conf
->bluestore_deferred_batch_ops_hdd
;
4364 deferred_batch_ops
= cct
->_conf
->bluestore_deferred_batch_ops_ssd
;
4368 dout(10) << __func__
<< " min_alloc_size 0x" << std::hex
<< min_alloc_size
4369 << std::dec
<< " order " << min_alloc_size_order
4370 << " max_alloc_size 0x" << std::hex
<< max_alloc_size
4371 << " prefer_deferred_size 0x" << prefer_deferred_size
4373 << " deferred_batch_ops " << deferred_batch_ops
4377 int BlueStore::_open_bdev(bool create
)
4379 assert(bdev
== NULL
);
4380 string p
= path
+ "/block";
4381 bdev
= BlockDevice::create(cct
, p
, aio_cb
, static_cast<void*>(this));
4382 int r
= bdev
->open(p
);
4386 if (bdev
->supported_bdev_label()) {
4387 r
= _check_or_set_bdev_label(p
, bdev
->get_size(), "main", create
);
4392 // initialize global block parameters
4393 block_size
= bdev
->get_block_size();
4394 block_mask
= ~(block_size
- 1);
4395 block_size_order
= ctz(block_size
);
4396 assert(block_size
== 1u << block_size_order
);
4397 // and set cache_size based on device type
4398 r
= _set_cache_sizes();
4412 void BlueStore::_close_bdev()
4420 int BlueStore::_open_fm(bool create
)
4423 fm
= FreelistManager::create(cct
, freelist_type
, db
, PREFIX_ALLOC
);
4426 // initialize freespace
4427 dout(20) << __func__
<< " initializing freespace" << dendl
;
4428 KeyValueDB::Transaction t
= db
->get_transaction();
4431 bl
.append(freelist_type
);
4432 t
->set(PREFIX_SUPER
, "freelist_type", bl
);
4434 // being able to allocate in units less than bdev block size
4435 // seems to be a bad idea.
4436 assert( cct
->_conf
->bdev_block_size
<= (int64_t)min_alloc_size
);
4437 fm
->create(bdev
->get_size(), (int64_t)min_alloc_size
, t
);
4439 // allocate superblock reserved space. note that we do not mark
4440 // bluefs space as allocated in the freelist; we instead rely on
4442 uint64_t reserved
= ROUND_UP_TO(MAX(SUPER_RESERVED
, min_alloc_size
),
4444 fm
->allocate(0, reserved
, t
);
4446 if (cct
->_conf
->bluestore_bluefs
) {
4447 assert(bluefs_extents
.num_intervals() == 1);
4448 interval_set
<uint64_t>::iterator p
= bluefs_extents
.begin();
4449 reserved
= ROUND_UP_TO(p
.get_start() + p
.get_len(), min_alloc_size
);
4450 dout(20) << __func__
<< " reserved 0x" << std::hex
<< reserved
<< std::dec
4451 << " for bluefs" << dendl
;
4453 ::encode(bluefs_extents
, bl
);
4454 t
->set(PREFIX_SUPER
, "bluefs_extents", bl
);
4455 dout(20) << __func__
<< " bluefs_extents 0x" << std::hex
<< bluefs_extents
4456 << std::dec
<< dendl
;
4459 if (cct
->_conf
->bluestore_debug_prefill
> 0) {
4460 uint64_t end
= bdev
->get_size() - reserved
;
4461 dout(1) << __func__
<< " pre-fragmenting freespace, using "
4462 << cct
->_conf
->bluestore_debug_prefill
<< " with max free extent "
4463 << cct
->_conf
->bluestore_debug_prefragment_max
<< dendl
;
4464 uint64_t start
= P2ROUNDUP(reserved
, min_alloc_size
);
4465 uint64_t max_b
= cct
->_conf
->bluestore_debug_prefragment_max
/ min_alloc_size
;
4466 float r
= cct
->_conf
->bluestore_debug_prefill
;
4470 while (!stop
&& start
< end
) {
4471 uint64_t l
= (rand() % max_b
+ 1) * min_alloc_size
;
4472 if (start
+ l
> end
) {
4474 l
= P2ALIGN(l
, min_alloc_size
);
4476 assert(start
+ l
<= end
);
4478 uint64_t u
= 1 + (uint64_t)(r
* (double)l
);
4479 u
= P2ROUNDUP(u
, min_alloc_size
);
4480 if (start
+ l
+ u
> end
) {
4481 u
= end
- (start
+ l
);
4482 // trim to align so we don't overflow again
4483 u
= P2ALIGN(u
, min_alloc_size
);
4486 assert(start
+ l
+ u
<= end
);
4488 dout(20) << " free 0x" << std::hex
<< start
<< "~" << l
4489 << " use 0x" << u
<< std::dec
<< dendl
;
4492 // break if u has been trimmed to nothing
4496 fm
->allocate(start
+ l
, u
, t
);
4500 db
->submit_transaction_sync(t
);
4503 int r
= fm
->init(bdev
->get_size());
4505 derr
<< __func__
<< " freelist init failed: " << cpp_strerror(r
) << dendl
;
4513 void BlueStore::_close_fm()
4515 dout(10) << __func__
<< dendl
;
4522 int BlueStore::_open_alloc()
4524 assert(alloc
== NULL
);
4525 assert(bdev
->get_size());
4526 alloc
= Allocator::create(cct
, cct
->_conf
->bluestore_allocator
,
4530 lderr(cct
) << __func__
<< " Allocator::unknown alloc type "
4531 << cct
->_conf
->bluestore_allocator
4536 uint64_t num
= 0, bytes
= 0;
4538 dout(1) << __func__
<< " opening allocation metadata" << dendl
;
4539 // initialize from freelist
4540 fm
->enumerate_reset();
4541 uint64_t offset
, length
;
4542 while (fm
->enumerate_next(&offset
, &length
)) {
4543 alloc
->init_add_free(offset
, length
);
4547 fm
->enumerate_reset();
4548 dout(1) << __func__
<< " loaded " << byte_u_t(bytes
)
4549 << " in " << num
<< " extents"
4552 // also mark bluefs space as allocated
4553 for (auto e
= bluefs_extents
.begin(); e
!= bluefs_extents
.end(); ++e
) {
4554 alloc
->init_rm_free(e
.get_start(), e
.get_len());
4556 dout(10) << __func__
<< " marked bluefs_extents 0x" << std::hex
4557 << bluefs_extents
<< std::dec
<< " as allocated" << dendl
;
4562 void BlueStore::_close_alloc()
4570 int BlueStore::_open_fsid(bool create
)
4572 assert(fsid_fd
< 0);
4573 int flags
= O_RDWR
|O_CLOEXEC
;
4576 fsid_fd
= ::openat(path_fd
, "fsid", flags
, 0644);
4579 derr
<< __func__
<< " " << cpp_strerror(err
) << dendl
;
4585 int BlueStore::_read_fsid(uuid_d
*uuid
)
4588 memset(fsid_str
, 0, sizeof(fsid_str
));
4589 int ret
= safe_read(fsid_fd
, fsid_str
, sizeof(fsid_str
));
4591 derr
<< __func__
<< " failed: " << cpp_strerror(ret
) << dendl
;
4598 if (!uuid
->parse(fsid_str
)) {
4599 derr
<< __func__
<< " unparsable uuid " << fsid_str
<< dendl
;
4605 int BlueStore::_write_fsid()
4607 int r
= ::ftruncate(fsid_fd
, 0);
4610 derr
<< __func__
<< " fsid truncate failed: " << cpp_strerror(r
) << dendl
;
4613 string str
= stringify(fsid
) + "\n";
4614 r
= safe_write(fsid_fd
, str
.c_str(), str
.length());
4616 derr
<< __func__
<< " fsid write failed: " << cpp_strerror(r
) << dendl
;
4619 r
= ::fsync(fsid_fd
);
4622 derr
<< __func__
<< " fsid fsync failed: " << cpp_strerror(r
) << dendl
;
4628 void BlueStore::_close_fsid()
4630 VOID_TEMP_FAILURE_RETRY(::close(fsid_fd
));
4634 int BlueStore::_lock_fsid()
4637 memset(&l
, 0, sizeof(l
));
4639 l
.l_whence
= SEEK_SET
;
4640 int r
= ::fcntl(fsid_fd
, F_SETLK
, &l
);
4643 derr
<< __func__
<< " failed to lock " << path
<< "/fsid"
4644 << " (is another ceph-osd still running?)"
4645 << cpp_strerror(err
) << dendl
;
4651 bool BlueStore::is_rotational()
4654 return bdev
->is_rotational();
4657 bool rotational
= true;
4658 int r
= _open_path();
4661 r
= _open_fsid(false);
4664 r
= _read_fsid(&fsid
);
4670 r
= _open_bdev(false);
4673 rotational
= bdev
->is_rotational();
4683 bool BlueStore::is_journal_rotational()
4686 dout(5) << __func__
<< " bluefs disabled, default to store media type"
4688 return is_rotational();
4690 dout(10) << __func__
<< " " << (int)bluefs
->wal_is_rotational() << dendl
;
4691 return bluefs
->wal_is_rotational();
4694 bool BlueStore::test_mount_in_use()
4696 // most error conditions mean the mount is not in use (e.g., because
4697 // it doesn't exist). only if we fail to lock do we conclude it is
4700 int r
= _open_path();
4703 r
= _open_fsid(false);
4708 ret
= true; // if we can't lock, it is in use
4715 int BlueStore::_open_db(bool create
)
4719 string fn
= path
+ "/db";
4722 ceph::shared_ptr
<Int64ArrayMergeOperator
> merge_op(new Int64ArrayMergeOperator
);
4726 kv_backend
= cct
->_conf
->bluestore_kvbackend
;
4728 r
= read_meta("kv_backend", &kv_backend
);
4730 derr
<< __func__
<< " unable to read 'kv_backend' meta" << dendl
;
4734 dout(10) << __func__
<< " kv_backend = " << kv_backend
<< dendl
;
4738 do_bluefs
= cct
->_conf
->bluestore_bluefs
;
4741 r
= read_meta("bluefs", &s
);
4743 derr
<< __func__
<< " unable to read 'bluefs' meta" << dendl
;
4748 } else if (s
== "0") {
4751 derr
<< __func__
<< " bluefs = " << s
<< " : not 0 or 1, aborting"
4756 dout(10) << __func__
<< " do_bluefs = " << do_bluefs
<< dendl
;
4758 rocksdb::Env
*env
= NULL
;
4760 dout(10) << __func__
<< " initializing bluefs" << dendl
;
4761 if (kv_backend
!= "rocksdb") {
4762 derr
<< " backend must be rocksdb to use bluefs" << dendl
;
4765 bluefs
= new BlueFS(cct
);
4770 bfn
= path
+ "/block.db";
4771 if (::stat(bfn
.c_str(), &st
) == 0) {
4772 r
= bluefs
->add_block_device(BlueFS::BDEV_DB
, bfn
);
4774 derr
<< __func__
<< " add block device(" << bfn
<< ") returned: "
4775 << cpp_strerror(r
) << dendl
;
4779 if (bluefs
->bdev_support_label(BlueFS::BDEV_DB
)) {
4780 r
= _check_or_set_bdev_label(
4782 bluefs
->get_block_device_size(BlueFS::BDEV_DB
),
4783 "bluefs db", create
);
4786 << " check block device(" << bfn
<< ") label returned: "
4787 << cpp_strerror(r
) << dendl
;
4792 bluefs
->add_block_extent(
4795 bluefs
->get_block_device_size(BlueFS::BDEV_DB
) - SUPER_RESERVED
);
4797 bluefs_shared_bdev
= BlueFS::BDEV_SLOW
;
4798 bluefs_single_shared_device
= false;
4801 if (::lstat(bfn
.c_str(), &st
) == -1) {
4803 bluefs_shared_bdev
= BlueFS::BDEV_DB
;
4805 derr
<< __func__
<< " " << bfn
<< " symlink exists but target unusable: "
4806 << cpp_strerror(r
) << dendl
;
4812 bfn
= path
+ "/block";
4813 r
= bluefs
->add_block_device(bluefs_shared_bdev
, bfn
);
4815 derr
<< __func__
<< " add block device(" << bfn
<< ") returned: "
4816 << cpp_strerror(r
) << dendl
;
4820 // note: we always leave the first SUPER_RESERVED (8k) of the device unused
4822 bdev
->get_size() * (cct
->_conf
->bluestore_bluefs_min_ratio
+
4823 cct
->_conf
->bluestore_bluefs_gift_ratio
);
4824 initial
= MAX(initial
, cct
->_conf
->bluestore_bluefs_min
);
4825 if (cct
->_conf
->bluefs_alloc_size
% min_alloc_size
) {
4826 derr
<< __func__
<< " bluefs_alloc_size 0x" << std::hex
4827 << cct
->_conf
->bluefs_alloc_size
<< " is not a multiple of "
4828 << "min_alloc_size 0x" << min_alloc_size
<< std::dec
<< dendl
;
4832 // align to bluefs's alloc_size
4833 initial
= P2ROUNDUP(initial
, cct
->_conf
->bluefs_alloc_size
);
4834 // put bluefs in the middle of the device in case it is an HDD
4835 uint64_t start
= P2ALIGN((bdev
->get_size() - initial
) / 2,
4836 cct
->_conf
->bluefs_alloc_size
);
4837 bluefs
->add_block_extent(bluefs_shared_bdev
, start
, initial
);
4838 bluefs_extents
.insert(start
, initial
);
4841 bfn
= path
+ "/block.wal";
4842 if (::stat(bfn
.c_str(), &st
) == 0) {
4843 r
= bluefs
->add_block_device(BlueFS::BDEV_WAL
, bfn
);
4845 derr
<< __func__
<< " add block device(" << bfn
<< ") returned: "
4846 << cpp_strerror(r
) << dendl
;
4850 if (bluefs
->bdev_support_label(BlueFS::BDEV_WAL
)) {
4851 r
= _check_or_set_bdev_label(
4853 bluefs
->get_block_device_size(BlueFS::BDEV_WAL
),
4854 "bluefs wal", create
);
4856 derr
<< __func__
<< " check block device(" << bfn
4857 << ") label returned: " << cpp_strerror(r
) << dendl
;
4863 bluefs
->add_block_extent(
4864 BlueFS::BDEV_WAL
, BDEV_LABEL_BLOCK_SIZE
,
4865 bluefs
->get_block_device_size(BlueFS::BDEV_WAL
) -
4866 BDEV_LABEL_BLOCK_SIZE
);
4868 cct
->_conf
->set_val("rocksdb_separate_wal_dir", "true");
4869 bluefs_single_shared_device
= false;
4872 if (::lstat(bfn
.c_str(), &st
) == -1) {
4874 cct
->_conf
->set_val("rocksdb_separate_wal_dir", "false");
4876 derr
<< __func__
<< " " << bfn
<< " symlink exists but target unusable: "
4877 << cpp_strerror(r
) << dendl
;
4885 r
= bluefs
->mount();
4887 derr
<< __func__
<< " failed bluefs mount: " << cpp_strerror(r
) << dendl
;
4890 if (cct
->_conf
->bluestore_bluefs_env_mirror
) {
4891 rocksdb::Env
*a
= new BlueRocksEnv(bluefs
);
4892 rocksdb::Env
*b
= rocksdb::Env::Default();
4894 string cmd
= "rm -rf " + path
+ "/db " +
4895 path
+ "/db.slow " +
4897 int r
= system(cmd
.c_str());
4900 env
= new rocksdb::EnvMirror(b
, a
, false, true);
4902 env
= new BlueRocksEnv(bluefs
);
4904 // simplify the dir names, too, as "seen" by rocksdb
4908 if (bluefs_shared_bdev
== BlueFS::BDEV_SLOW
) {
4909 // we have both block.db and block; tell rocksdb!
4910 // note: the second (last) size value doesn't really matter
4911 ostringstream db_paths
;
4912 uint64_t db_size
= bluefs
->get_block_device_size(BlueFS::BDEV_DB
);
4913 uint64_t slow_size
= bluefs
->get_block_device_size(BlueFS::BDEV_SLOW
);
4914 db_paths
<< fn
<< ","
4915 << (uint64_t)(db_size
* 95 / 100) << " "
4916 << fn
+ ".slow" << ","
4917 << (uint64_t)(slow_size
* 95 / 100);
4918 cct
->_conf
->set_val("rocksdb_db_paths", db_paths
.str(), false);
4919 dout(10) << __func__
<< " set rocksdb_db_paths to "
4920 << cct
->_conf
->get_val
<std::string
>("rocksdb_db_paths") << dendl
;
4925 if (cct
->_conf
->rocksdb_separate_wal_dir
)
4926 env
->CreateDir(fn
+ ".wal");
4927 if (cct
->_conf
->get_val
<std::string
>("rocksdb_db_paths").length())
4928 env
->CreateDir(fn
+ ".slow");
4930 } else if (create
) {
4931 int r
= ::mkdir(fn
.c_str(), 0755);
4934 if (r
< 0 && r
!= -EEXIST
) {
4935 derr
<< __func__
<< " failed to create " << fn
<< ": " << cpp_strerror(r
)
4941 if (cct
->_conf
->rocksdb_separate_wal_dir
) {
4942 string walfn
= path
+ "/db.wal";
4943 r
= ::mkdir(walfn
.c_str(), 0755);
4946 if (r
< 0 && r
!= -EEXIST
) {
4947 derr
<< __func__
<< " failed to create " << walfn
4948 << ": " << cpp_strerror(r
)
4956 db
= KeyValueDB::create(cct
,
4959 static_cast<void*>(env
));
4961 derr
<< __func__
<< " error creating db" << dendl
;
4967 // delete env manually here since we can't depend on db to do this
4974 FreelistManager::setup_merge_operators(db
);
4975 db
->set_merge_operator(PREFIX_STAT
, merge_op
);
4976 db
->set_cache_size(cache_kv_ratio
* cache_size
);
4978 if (kv_backend
== "rocksdb")
4979 options
= cct
->_conf
->bluestore_rocksdb_options
;
4982 r
= db
->create_and_open(err
);
4986 derr
<< __func__
<< " erroring opening db: " << err
.str() << dendl
;
4996 dout(1) << __func__
<< " opened " << kv_backend
4997 << " path " << fn
<< " options " << options
<< dendl
;
5007 void BlueStore::_close_db()
5019 int BlueStore::_reconcile_bluefs_freespace()
5021 dout(10) << __func__
<< dendl
;
5022 interval_set
<uint64_t> bset
;
5023 int r
= bluefs
->get_block_extents(bluefs_shared_bdev
, &bset
);
5025 if (bset
== bluefs_extents
) {
5026 dout(10) << __func__
<< " we agree bluefs has 0x" << std::hex
<< bset
5027 << std::dec
<< dendl
;
5030 dout(10) << __func__
<< " bluefs says 0x" << std::hex
<< bset
<< std::dec
5032 dout(10) << __func__
<< " super says 0x" << std::hex
<< bluefs_extents
5033 << std::dec
<< dendl
;
5035 interval_set
<uint64_t> overlap
;
5036 overlap
.intersection_of(bset
, bluefs_extents
);
5038 bset
.subtract(overlap
);
5039 if (!bset
.empty()) {
5040 derr
<< __func__
<< " bluefs extra 0x" << std::hex
<< bset
<< std::dec
5045 interval_set
<uint64_t> super_extra
;
5046 super_extra
= bluefs_extents
;
5047 super_extra
.subtract(overlap
);
5048 if (!super_extra
.empty()) {
5049 // This is normal: it can happen if we commit to give extents to
5050 // bluefs and we crash before bluefs commits that it owns them.
5051 dout(10) << __func__
<< " super extra " << super_extra
<< dendl
;
5052 for (interval_set
<uint64_t>::iterator p
= super_extra
.begin();
5053 p
!= super_extra
.end();
5055 bluefs
->add_block_extent(bluefs_shared_bdev
, p
.get_start(), p
.get_len());
5062 int BlueStore::_balance_bluefs_freespace(PExtentVector
*extents
)
5067 vector
<pair
<uint64_t,uint64_t>> bluefs_usage
; // <free, total> ...
5068 bluefs
->get_usage(&bluefs_usage
);
5069 assert(bluefs_usage
.size() > bluefs_shared_bdev
);
5071 // fixme: look at primary bdev only for now
5072 uint64_t bluefs_free
= bluefs_usage
[bluefs_shared_bdev
].first
;
5073 uint64_t bluefs_total
= bluefs_usage
[bluefs_shared_bdev
].second
;
5074 float bluefs_free_ratio
= (float)bluefs_free
/ (float)bluefs_total
;
5076 uint64_t my_free
= alloc
->get_free();
5077 uint64_t total
= bdev
->get_size();
5078 float my_free_ratio
= (float)my_free
/ (float)total
;
5080 uint64_t total_free
= bluefs_free
+ my_free
;
5082 float bluefs_ratio
= (float)bluefs_free
/ (float)total_free
;
5084 dout(10) << __func__
5085 << " bluefs " << byte_u_t(bluefs_free
)
5086 << " free (" << bluefs_free_ratio
5087 << ") bluestore " << byte_u_t(my_free
)
5088 << " free (" << my_free_ratio
5089 << "), bluefs_ratio " << bluefs_ratio
5093 uint64_t reclaim
= 0;
5094 if (bluefs_ratio
< cct
->_conf
->bluestore_bluefs_min_ratio
) {
5095 gift
= cct
->_conf
->bluestore_bluefs_gift_ratio
* total_free
;
5096 dout(10) << __func__
<< " bluefs_ratio " << bluefs_ratio
5097 << " < min_ratio " << cct
->_conf
->bluestore_bluefs_min_ratio
5098 << ", should gift " << byte_u_t(gift
) << dendl
;
5099 } else if (bluefs_ratio
> cct
->_conf
->bluestore_bluefs_max_ratio
) {
5100 reclaim
= cct
->_conf
->bluestore_bluefs_reclaim_ratio
* total_free
;
5101 if (bluefs_total
- reclaim
< cct
->_conf
->bluestore_bluefs_min
)
5102 reclaim
= bluefs_total
- cct
->_conf
->bluestore_bluefs_min
;
5103 dout(10) << __func__
<< " bluefs_ratio " << bluefs_ratio
5104 << " > max_ratio " << cct
->_conf
->bluestore_bluefs_max_ratio
5105 << ", should reclaim " << byte_u_t(reclaim
) << dendl
;
5108 // don't take over too much of the freespace
5109 uint64_t free_cap
= cct
->_conf
->bluestore_bluefs_max_ratio
* total_free
;
5110 if (bluefs_total
< cct
->_conf
->bluestore_bluefs_min
&&
5111 cct
->_conf
->bluestore_bluefs_min
< free_cap
) {
5112 uint64_t g
= cct
->_conf
->bluestore_bluefs_min
- bluefs_total
;
5113 dout(10) << __func__
<< " bluefs_total " << bluefs_total
5114 << " < min " << cct
->_conf
->bluestore_bluefs_min
5115 << ", should gift " << byte_u_t(g
) << dendl
;
5120 uint64_t min_free
= cct
->_conf
->get_val
<uint64_t>("bluestore_bluefs_min_free");
5121 if (bluefs_free
< min_free
&&
5122 min_free
< free_cap
) {
5123 uint64_t g
= min_free
- bluefs_free
;
5124 dout(10) << __func__
<< " bluefs_free " << bluefs_total
5125 << " < min " << min_free
5126 << ", should gift " << byte_u_t(g
) << dendl
;
5133 // round up to alloc size
5134 gift
= P2ROUNDUP(gift
, cct
->_conf
->bluefs_alloc_size
);
5136 // hard cap to fit into 32 bits
5137 gift
= MIN(gift
, 1ull<<31);
5138 dout(10) << __func__
<< " gifting " << gift
5139 << " (" << byte_u_t(gift
) << ")" << dendl
;
5141 // fixme: just do one allocation to start...
5142 int r
= alloc
->reserve(gift
);
5145 AllocExtentVector exts
;
5146 int64_t alloc_len
= alloc
->allocate(gift
, cct
->_conf
->bluefs_alloc_size
,
5149 if (alloc_len
<= 0) {
5150 dout(1) << __func__
<< " no allocate on 0x" << std::hex
<< gift
5151 << " min_alloc_size 0x" << min_alloc_size
<< std::dec
<< dendl
;
5152 alloc
->unreserve(gift
);
5155 } else if (alloc_len
< (int64_t)gift
) {
5156 dout(1) << __func__
<< " insufficient allocate on 0x" << std::hex
<< gift
5157 << " min_alloc_size 0x" << min_alloc_size
5158 << " allocated 0x" << alloc_len
5159 << std::dec
<< dendl
;
5160 alloc
->unreserve(gift
- alloc_len
);
5163 for (auto& p
: exts
) {
5164 bluestore_pextent_t e
= bluestore_pextent_t(p
);
5165 dout(1) << __func__
<< " gifting " << e
<< " to bluefs" << dendl
;
5166 extents
->push_back(e
);
5173 // reclaim from bluefs?
5175 // round up to alloc size
5176 reclaim
= P2ROUNDUP(reclaim
, cct
->_conf
->bluefs_alloc_size
);
5178 // hard cap to fit into 32 bits
5179 reclaim
= MIN(reclaim
, 1ull<<31);
5180 dout(10) << __func__
<< " reclaiming " << reclaim
5181 << " (" << byte_u_t(reclaim
) << ")" << dendl
;
5183 while (reclaim
> 0) {
5184 // NOTE: this will block and do IO.
5185 AllocExtentVector extents
;
5186 int r
= bluefs
->reclaim_blocks(bluefs_shared_bdev
, reclaim
,
5189 derr
<< __func__
<< " failed to reclaim space from bluefs"
5193 for (auto e
: extents
) {
5194 bluefs_extents
.erase(e
.offset
, e
.length
);
5195 bluefs_extents_reclaiming
.insert(e
.offset
, e
.length
);
5196 reclaim
-= e
.length
;
5206 void BlueStore::_commit_bluefs_freespace(
5207 const PExtentVector
& bluefs_gift_extents
)
5209 dout(10) << __func__
<< dendl
;
5210 for (auto& p
: bluefs_gift_extents
) {
5211 bluefs
->add_block_extent(bluefs_shared_bdev
, p
.offset
, p
.length
);
5215 int BlueStore::_open_collections(int *errors
)
5217 dout(10) << __func__
<< dendl
;
5218 assert(coll_map
.empty());
5219 KeyValueDB::Iterator it
= db
->get_iterator(PREFIX_COLL
);
5220 for (it
->upper_bound(string());
5224 if (cid
.parse(it
->key())) {
5228 cache_shards
[cid
.hash_to_shard(cache_shards
.size())],
5230 bufferlist bl
= it
->value();
5231 bufferlist::iterator p
= bl
.begin();
5233 ::decode(c
->cnode
, p
);
5234 } catch (buffer::error
& e
) {
5235 derr
<< __func__
<< " failed to decode cnode, key:"
5236 << pretty_binary_string(it
->key()) << dendl
;
5239 dout(20) << __func__
<< " opened " << cid
<< " " << c
5240 << " " << c
->cnode
<< dendl
;
5243 derr
<< __func__
<< " unrecognized collection " << it
->key() << dendl
;
5251 void BlueStore::_open_statfs()
5254 int r
= db
->get(PREFIX_STAT
, "bluestore_statfs", &bl
);
5256 if (size_t(bl
.length()) >= sizeof(vstatfs
.values
)) {
5257 auto it
= bl
.begin();
5260 dout(10) << __func__
<< " store_statfs is corrupt, using empty" << dendl
;
5264 dout(10) << __func__
<< " store_statfs missed, using empty" << dendl
;
5268 int BlueStore::_setup_block_symlink_or_file(
5274 dout(20) << __func__
<< " name " << name
<< " path " << epath
5275 << " size " << size
<< " create=" << (int)create
<< dendl
;
5277 int flags
= O_RDWR
|O_CLOEXEC
;
5280 if (epath
.length()) {
5281 r
= ::symlinkat(epath
.c_str(), path_fd
, name
.c_str());
5284 derr
<< __func__
<< " failed to create " << name
<< " symlink to "
5285 << epath
<< ": " << cpp_strerror(r
) << dendl
;
5289 if (!epath
.compare(0, strlen(SPDK_PREFIX
), SPDK_PREFIX
)) {
5290 int fd
= ::openat(path_fd
, epath
.c_str(), flags
, 0644);
5293 derr
<< __func__
<< " failed to open " << epath
<< " file: "
5294 << cpp_strerror(r
) << dendl
;
5297 string serial_number
= epath
.substr(strlen(SPDK_PREFIX
));
5298 r
= ::write(fd
, serial_number
.c_str(), serial_number
.size());
5299 assert(r
== (int)serial_number
.size());
5300 dout(1) << __func__
<< " created " << name
<< " symlink to "
5302 VOID_TEMP_FAILURE_RETRY(::close(fd
));
5306 int fd
= ::openat(path_fd
, name
.c_str(), flags
, 0644);
5308 // block file is present
5310 int r
= ::fstat(fd
, &st
);
5312 S_ISREG(st
.st_mode
) && // if it is a regular file
5313 st
.st_size
== 0) { // and is 0 bytes
5314 r
= ::ftruncate(fd
, size
);
5317 derr
<< __func__
<< " failed to resize " << name
<< " file to "
5318 << size
<< ": " << cpp_strerror(r
) << dendl
;
5319 VOID_TEMP_FAILURE_RETRY(::close(fd
));
5323 if (cct
->_conf
->bluestore_block_preallocate_file
) {
5324 r
= ::ceph_posix_fallocate(fd
, 0, size
);
5326 derr
<< __func__
<< " failed to prefallocate " << name
<< " file to "
5327 << size
<< ": " << cpp_strerror(r
) << dendl
;
5328 VOID_TEMP_FAILURE_RETRY(::close(fd
));
5332 dout(1) << __func__
<< " resized " << name
<< " file to "
5333 << byte_u_t(size
) << dendl
;
5335 VOID_TEMP_FAILURE_RETRY(::close(fd
));
5339 derr
<< __func__
<< " failed to open " << name
<< " file: "
5340 << cpp_strerror(r
) << dendl
;
5348 int BlueStore::mkfs()
5350 dout(1) << __func__
<< " path " << path
<< dendl
;
5356 r
= read_meta("mkfs_done", &done
);
5358 dout(1) << __func__
<< " already created" << dendl
;
5359 if (cct
->_conf
->bluestore_fsck_on_mkfs
) {
5360 r
= fsck(cct
->_conf
->bluestore_fsck_on_mkfs_deep
);
5362 derr
<< __func__
<< " fsck found fatal error: " << cpp_strerror(r
)
5367 derr
<< __func__
<< " fsck found " << r
<< " errors" << dendl
;
5371 return r
; // idempotent
5377 r
= read_meta("type", &type
);
5379 if (type
!= "bluestore") {
5380 derr
<< __func__
<< " expected bluestore, but type is " << type
<< dendl
;
5384 r
= write_meta("type", "bluestore");
5390 freelist_type
= "bitmap";
5396 r
= _open_fsid(true);
5402 goto out_close_fsid
;
5404 r
= _read_fsid(&old_fsid
);
5405 if (r
< 0 || old_fsid
.is_zero()) {
5406 if (fsid
.is_zero()) {
5407 fsid
.generate_random();
5408 dout(1) << __func__
<< " generated fsid " << fsid
<< dendl
;
5410 dout(1) << __func__
<< " using provided fsid " << fsid
<< dendl
;
5412 // we'll write it later.
5414 if (!fsid
.is_zero() && fsid
!= old_fsid
) {
5415 derr
<< __func__
<< " on-disk fsid " << old_fsid
5416 << " != provided " << fsid
<< dendl
;
5418 goto out_close_fsid
;
5423 r
= _setup_block_symlink_or_file("block", cct
->_conf
->bluestore_block_path
,
5424 cct
->_conf
->bluestore_block_size
,
5425 cct
->_conf
->bluestore_block_create
);
5427 goto out_close_fsid
;
5428 if (cct
->_conf
->bluestore_bluefs
) {
5429 r
= _setup_block_symlink_or_file("block.wal", cct
->_conf
->bluestore_block_wal_path
,
5430 cct
->_conf
->bluestore_block_wal_size
,
5431 cct
->_conf
->bluestore_block_wal_create
);
5433 goto out_close_fsid
;
5434 r
= _setup_block_symlink_or_file("block.db", cct
->_conf
->bluestore_block_db_path
,
5435 cct
->_conf
->bluestore_block_db_size
,
5436 cct
->_conf
->bluestore_block_db_create
);
5438 goto out_close_fsid
;
5441 r
= _open_bdev(true);
5443 goto out_close_fsid
;
5445 // choose min_alloc_size
5446 if (cct
->_conf
->bluestore_min_alloc_size
) {
5447 min_alloc_size
= cct
->_conf
->bluestore_min_alloc_size
;
5450 if (bdev
->is_rotational()) {
5451 min_alloc_size
= cct
->_conf
->bluestore_min_alloc_size_hdd
;
5453 min_alloc_size
= cct
->_conf
->bluestore_min_alloc_size_ssd
;
5457 // make sure min_alloc_size is power of 2 aligned.
5458 if (!ISP2(min_alloc_size
)) {
5459 derr
<< __func__
<< " min_alloc_size 0x"
5460 << std::hex
<< min_alloc_size
<< std::dec
5461 << " is not power of 2 aligned!"
5464 goto out_close_bdev
;
5469 goto out_close_bdev
;
5476 KeyValueDB::Transaction t
= db
->get_transaction();
5479 ::encode((uint64_t)0, bl
);
5480 t
->set(PREFIX_SUPER
, "nid_max", bl
);
5481 t
->set(PREFIX_SUPER
, "blobid_max", bl
);
5486 ::encode((uint64_t)min_alloc_size
, bl
);
5487 t
->set(PREFIX_SUPER
, "min_alloc_size", bl
);
5490 ondisk_format
= latest_ondisk_format
;
5491 _prepare_ondisk_format_super(t
);
5492 db
->submit_transaction_sync(t
);
5496 r
= write_meta("kv_backend", cct
->_conf
->bluestore_kvbackend
);
5500 r
= write_meta("bluefs", stringify(bluefs
? 1 : 0));
5504 if (fsid
!= old_fsid
) {
5507 derr
<< __func__
<< " error writing fsid: " << cpp_strerror(r
) << dendl
;
5524 cct
->_conf
->bluestore_fsck_on_mkfs
) {
5525 int rc
= fsck(cct
->_conf
->bluestore_fsck_on_mkfs_deep
);
5529 derr
<< __func__
<< " fsck found " << rc
<< " errors" << dendl
;
5535 // indicate success by writing the 'mkfs_done' file
5536 r
= write_meta("mkfs_done", "yes");
5540 derr
<< __func__
<< " failed, " << cpp_strerror(r
) << dendl
;
5542 dout(0) << __func__
<< " success" << dendl
;
5547 void BlueStore::set_cache_shards(unsigned num
)
5549 dout(10) << __func__
<< " " << num
<< dendl
;
5550 size_t old
= cache_shards
.size();
5552 cache_shards
.resize(num
);
5553 for (unsigned i
= old
; i
< num
; ++i
) {
5554 cache_shards
[i
] = Cache::create(cct
, cct
->_conf
->bluestore_cache_type
,
5559 int BlueStore::_mount(bool kv_only
)
5561 dout(1) << __func__
<< " path " << path
<< dendl
;
5567 int r
= read_meta("type", &type
);
5569 derr
<< __func__
<< " failed to load os-type: " << cpp_strerror(r
)
5574 if (type
!= "bluestore") {
5575 derr
<< __func__
<< " expected bluestore, but type is " << type
<< dendl
;
5580 if (cct
->_conf
->bluestore_fsck_on_mount
) {
5581 int rc
= fsck(cct
->_conf
->bluestore_fsck_on_mount_deep
);
5585 derr
<< __func__
<< " fsck found " << rc
<< " errors" << dendl
;
5590 int r
= _open_path();
5593 r
= _open_fsid(false);
5597 r
= _read_fsid(&fsid
);
5605 r
= _open_bdev(false);
5609 r
= _open_db(false);
5616 r
= _open_super_meta();
5620 r
= _open_fm(false);
5628 r
= _open_collections();
5632 r
= _reload_logger();
5637 r
= _reconcile_bluefs_freespace();
5644 r
= _deferred_replay();
5648 mempool_thread
.init();
5672 int BlueStore::umount()
5674 assert(_kv_only
|| mounted
);
5675 dout(1) << __func__
<< dendl
;
5678 _osr_unregister_all();
5682 mempool_thread
.shutdown();
5683 dout(20) << __func__
<< " stopping kv thread" << dendl
;
5686 dout(20) << __func__
<< " closing" << dendl
;
5696 if (cct
->_conf
->bluestore_fsck_on_umount
) {
5697 int rc
= fsck(cct
->_conf
->bluestore_fsck_on_umount_deep
);
5701 derr
<< __func__
<< " fsck found " << rc
<< " errors" << dendl
;
5708 static void apply(uint64_t off
,
5710 uint64_t granularity
,
5711 BlueStore::mempool_dynamic_bitset
&bitset
,
5712 std::function
<void(uint64_t,
5713 BlueStore::mempool_dynamic_bitset
&)> f
) {
5714 auto end
= ROUND_UP_TO(off
+ len
, granularity
);
5716 uint64_t pos
= off
/ granularity
;
5722 int BlueStore::_fsck_check_extents(
5723 const ghobject_t
& oid
,
5724 const PExtentVector
& extents
,
5726 mempool_dynamic_bitset
&used_blocks
,
5727 uint64_t granularity
,
5728 store_statfs_t
& expected_statfs
)
5730 dout(30) << __func__
<< " oid " << oid
<< " extents " << extents
<< dendl
;
5732 for (auto e
: extents
) {
5735 expected_statfs
.allocated
+= e
.length
;
5737 expected_statfs
.compressed_allocated
+= e
.length
;
5739 bool already
= false;
5741 e
.offset
, e
.length
, granularity
, used_blocks
,
5742 [&](uint64_t pos
, mempool_dynamic_bitset
&bs
) {
5743 assert(pos
< bs
.size());
5750 derr
<< " " << oid
<< " extent " << e
5751 << " or a subset is already allocated" << dendl
;
5754 if (e
.end() > bdev
->get_size()) {
5755 derr
<< " " << oid
<< " extent " << e
5756 << " past end of block device" << dendl
;
5763 int BlueStore::_fsck(bool deep
, bool repair
)
5766 << (repair
? " fsck" : " repair")
5767 << (deep
? " (deep)" : " (shallow)") << " start" << dendl
;
5771 typedef btree::btree_set
<
5772 uint64_t,std::less
<uint64_t>,
5773 mempool::bluestore_fsck::pool_allocator
<uint64_t>> uint64_t_btree_t
;
5774 uint64_t_btree_t used_nids
;
5775 uint64_t_btree_t used_omap_head
;
5776 uint64_t_btree_t used_sbids
;
5778 mempool_dynamic_bitset used_blocks
;
5779 KeyValueDB::Iterator it
;
5780 store_statfs_t expected_statfs
, actual_statfs
;
5782 list
<ghobject_t
> oids
;
5784 bluestore_extent_ref_map_t ref_map
;
5787 mempool::bluestore_fsck::map
<uint64_t,sb_info_t
> sb_info
;
5789 uint64_t num_objects
= 0;
5790 uint64_t num_extents
= 0;
5791 uint64_t num_blobs
= 0;
5792 uint64_t num_spanning_blobs
= 0;
5793 uint64_t num_shared_blobs
= 0;
5794 uint64_t num_sharded_objects
= 0;
5795 uint64_t num_object_shards
= 0;
5797 utime_t start
= ceph_clock_now();
5799 int r
= _open_path();
5802 r
= _open_fsid(false);
5806 r
= _read_fsid(&fsid
);
5814 r
= _open_bdev(false);
5818 r
= _open_db(false);
5822 r
= _open_super_meta();
5826 r
= _open_fm(false);
5834 r
= _open_collections(&errors
);
5838 mempool_thread
.init();
5840 // we need finishers and kv_{sync,finalize}_thread *just* for replay
5842 r
= _deferred_replay();
5847 used_blocks
.resize(fm
->get_alloc_units());
5849 0, MAX(min_alloc_size
, SUPER_RESERVED
), fm
->get_alloc_size(), used_blocks
,
5850 [&](uint64_t pos
, mempool_dynamic_bitset
&bs
) {
5851 assert(pos
< bs
.size());
5857 for (auto e
= bluefs_extents
.begin(); e
!= bluefs_extents
.end(); ++e
) {
5859 e
.get_start(), e
.get_len(), fm
->get_alloc_size(), used_blocks
,
5860 [&](uint64_t pos
, mempool_dynamic_bitset
&bs
) {
5861 assert(pos
< bs
.size());
5874 // get expected statfs; fill unaffected fields to be able to compare
5876 statfs(&actual_statfs
);
5877 expected_statfs
.total
= actual_statfs
.total
;
5878 expected_statfs
.available
= actual_statfs
.available
;
5881 dout(1) << __func__
<< " walking object keyspace" << dendl
;
5882 it
= db
->get_iterator(PREFIX_OBJ
);
5886 mempool::bluestore_fsck::list
<string
> expecting_shards
;
5887 for (it
->lower_bound(string()); it
->valid(); it
->next()) {
5888 if (g_conf
->bluestore_debug_fsck_abort
) {
5891 dout(30) << " key " << pretty_binary_string(it
->key()) << dendl
;
5892 if (is_extent_shard_key(it
->key())) {
5893 while (!expecting_shards
.empty() &&
5894 expecting_shards
.front() < it
->key()) {
5895 derr
<< "fsck error: missing shard key "
5896 << pretty_binary_string(expecting_shards
.front())
5899 expecting_shards
.pop_front();
5901 if (!expecting_shards
.empty() &&
5902 expecting_shards
.front() == it
->key()) {
5904 expecting_shards
.pop_front();
5910 get_key_extent_shard(it
->key(), &okey
, &offset
);
5911 derr
<< "fsck error: stray shard 0x" << std::hex
<< offset
5912 << std::dec
<< dendl
;
5913 if (expecting_shards
.empty()) {
5914 derr
<< "fsck error: " << pretty_binary_string(it
->key())
5915 << " is unexpected" << dendl
;
5919 while (expecting_shards
.front() > it
->key()) {
5920 derr
<< "fsck error: saw " << pretty_binary_string(it
->key())
5922 derr
<< "fsck error: exp "
5923 << pretty_binary_string(expecting_shards
.front()) << dendl
;
5925 expecting_shards
.pop_front();
5926 if (expecting_shards
.empty()) {
5934 int r
= get_key_object(it
->key(), &oid
);
5936 derr
<< "fsck error: bad object key "
5937 << pretty_binary_string(it
->key()) << dendl
;
5942 oid
.shard_id
!= pgid
.shard
||
5943 oid
.hobj
.pool
!= (int64_t)pgid
.pool() ||
5944 !c
->contains(oid
)) {
5946 for (ceph::unordered_map
<coll_t
, CollectionRef
>::iterator p
=
5948 p
!= coll_map
.end();
5950 if (p
->second
->contains(oid
)) {
5956 derr
<< "fsck error: stray object " << oid
5957 << " not owned by any collection" << dendl
;
5961 c
->cid
.is_pg(&pgid
);
5962 dout(20) << __func__
<< " collection " << c
->cid
<< " " << c
->cnode
5966 if (!expecting_shards
.empty()) {
5967 for (auto &k
: expecting_shards
) {
5968 derr
<< "fsck error: missing shard key "
5969 << pretty_binary_string(k
) << dendl
;
5972 expecting_shards
.clear();
5975 dout(10) << __func__
<< " " << oid
<< dendl
;
5976 RWLock::RLocker
l(c
->lock
);
5977 OnodeRef o
= c
->get_onode(oid
, false);
5979 if (o
->onode
.nid
> nid_max
) {
5980 derr
<< "fsck error: " << oid
<< " nid " << o
->onode
.nid
5981 << " > nid_max " << nid_max
<< dendl
;
5984 if (used_nids
.count(o
->onode
.nid
)) {
5985 derr
<< "fsck error: " << oid
<< " nid " << o
->onode
.nid
5986 << " already in use" << dendl
;
5988 continue; // go for next object
5990 used_nids
.insert(o
->onode
.nid
);
5993 num_spanning_blobs
+= o
->extent_map
.spanning_blob_map
.size();
5994 o
->extent_map
.fault_range(db
, 0, OBJECT_MAX_SIZE
);
5997 if (!o
->extent_map
.shards
.empty()) {
5998 ++num_sharded_objects
;
5999 num_object_shards
+= o
->extent_map
.shards
.size();
6001 for (auto& s
: o
->extent_map
.shards
) {
6002 dout(20) << __func__
<< " shard " << *s
.shard_info
<< dendl
;
6003 expecting_shards
.push_back(string());
6004 get_extent_shard_key(o
->key
, s
.shard_info
->offset
,
6005 &expecting_shards
.back());
6006 if (s
.shard_info
->offset
>= o
->onode
.size
) {
6007 derr
<< "fsck error: " << oid
<< " shard 0x" << std::hex
6008 << s
.shard_info
->offset
<< " past EOF at 0x" << o
->onode
.size
6009 << std::dec
<< dendl
;
6014 map
<BlobRef
,bluestore_blob_t::unused_t
> referenced
;
6016 mempool::bluestore_fsck::map
<BlobRef
,
6017 bluestore_blob_use_tracker_t
> ref_map
;
6018 for (auto& l
: o
->extent_map
.extent_map
) {
6019 dout(20) << __func__
<< " " << l
<< dendl
;
6020 if (l
.logical_offset
< pos
) {
6021 derr
<< "fsck error: " << oid
<< " lextent at 0x"
6022 << std::hex
<< l
.logical_offset
6023 << " overlaps with the previous, which ends at 0x" << pos
6024 << std::dec
<< dendl
;
6027 if (o
->extent_map
.spans_shard(l
.logical_offset
, l
.length
)) {
6028 derr
<< "fsck error: " << oid
<< " lextent at 0x"
6029 << std::hex
<< l
.logical_offset
<< "~" << l
.length
6030 << " spans a shard boundary"
6031 << std::dec
<< dendl
;
6034 pos
= l
.logical_offset
+ l
.length
;
6035 expected_statfs
.stored
+= l
.length
;
6037 const bluestore_blob_t
& blob
= l
.blob
->get_blob();
6039 auto& ref
= ref_map
[l
.blob
];
6040 if (ref
.is_empty()) {
6041 uint32_t min_release_size
= blob
.get_release_size(min_alloc_size
);
6042 uint32_t l
= blob
.get_logical_length();
6043 ref
.init(l
, min_release_size
);
6049 if (blob
.has_unused()) {
6050 auto p
= referenced
.find(l
.blob
);
6051 bluestore_blob_t::unused_t
*pu
;
6052 if (p
== referenced
.end()) {
6053 pu
= &referenced
[l
.blob
];
6057 uint64_t blob_len
= blob
.get_logical_length();
6058 assert((blob_len
% (sizeof(*pu
)*8)) == 0);
6059 assert(l
.blob_offset
+ l
.length
<= blob_len
);
6060 uint64_t chunk_size
= blob_len
/ (sizeof(*pu
)*8);
6061 uint64_t start
= l
.blob_offset
/ chunk_size
;
6063 ROUND_UP_TO(l
.blob_offset
+ l
.length
, chunk_size
) / chunk_size
;
6064 for (auto i
= start
; i
< end
; ++i
) {
6069 for (auto &i
: referenced
) {
6070 dout(20) << __func__
<< " referenced 0x" << std::hex
<< i
.second
6071 << std::dec
<< " for " << *i
.first
<< dendl
;
6072 const bluestore_blob_t
& blob
= i
.first
->get_blob();
6073 if (i
.second
& blob
.unused
) {
6074 derr
<< "fsck error: " << oid
<< " blob claims unused 0x"
6075 << std::hex
<< blob
.unused
6076 << " but extents reference 0x" << i
.second
6077 << " on blob " << *i
.first
<< dendl
;
6080 if (blob
.has_csum()) {
6081 uint64_t blob_len
= blob
.get_logical_length();
6082 uint64_t unused_chunk_size
= blob_len
/ (sizeof(blob
.unused
)*8);
6083 unsigned csum_count
= blob
.get_csum_count();
6084 unsigned csum_chunk_size
= blob
.get_csum_chunk_size();
6085 for (unsigned p
= 0; p
< csum_count
; ++p
) {
6086 unsigned pos
= p
* csum_chunk_size
;
6087 unsigned firstbit
= pos
/ unused_chunk_size
; // [firstbit,lastbit]
6088 unsigned lastbit
= (pos
+ csum_chunk_size
- 1) / unused_chunk_size
;
6089 unsigned mask
= 1u << firstbit
;
6090 for (unsigned b
= firstbit
+ 1; b
<= lastbit
; ++b
) {
6093 if ((blob
.unused
& mask
) == mask
) {
6094 // this csum chunk region is marked unused
6095 if (blob
.get_csum_item(p
) != 0) {
6096 derr
<< "fsck error: " << oid
6097 << " blob claims csum chunk 0x" << std::hex
<< pos
6098 << "~" << csum_chunk_size
6099 << " is unused (mask 0x" << mask
<< " of unused 0x"
6100 << blob
.unused
<< ") but csum is non-zero 0x"
6101 << blob
.get_csum_item(p
) << std::dec
<< " on blob "
6102 << *i
.first
<< dendl
;
6109 for (auto &i
: ref_map
) {
6111 const bluestore_blob_t
& blob
= i
.first
->get_blob();
6112 bool equal
= i
.first
->get_blob_use_tracker().equal(i
.second
);
6114 derr
<< "fsck error: " << oid
<< " blob " << *i
.first
6115 << " doesn't match expected ref_map " << i
.second
<< dendl
;
6118 if (blob
.is_compressed()) {
6119 expected_statfs
.compressed
+= blob
.get_compressed_payload_length();
6120 expected_statfs
.compressed_original
+=
6121 i
.first
->get_referenced_bytes();
6123 if (blob
.is_shared()) {
6124 if (i
.first
->shared_blob
->get_sbid() > blobid_max
) {
6125 derr
<< "fsck error: " << oid
<< " blob " << blob
6126 << " sbid " << i
.first
->shared_blob
->get_sbid() << " > blobid_max "
6127 << blobid_max
<< dendl
;
6129 } else if (i
.first
->shared_blob
->get_sbid() == 0) {
6130 derr
<< "fsck error: " << oid
<< " blob " << blob
6131 << " marked as shared but has uninitialized sbid"
6135 sb_info_t
& sbi
= sb_info
[i
.first
->shared_blob
->get_sbid()];
6136 sbi
.sb
= i
.first
->shared_blob
;
6137 sbi
.oids
.push_back(oid
);
6138 sbi
.compressed
= blob
.is_compressed();
6139 for (auto e
: blob
.get_extents()) {
6141 sbi
.ref_map
.get(e
.offset
, e
.length
);
6145 errors
+= _fsck_check_extents(oid
, blob
.get_extents(),
6146 blob
.is_compressed(),
6148 fm
->get_alloc_size(),
6154 int r
= _do_read(c
.get(), o
, 0, o
->onode
.size
, bl
, 0);
6157 derr
<< "fsck error: " << oid
<< " error during read: "
6158 << cpp_strerror(r
) << dendl
;
6162 if (o
->onode
.has_omap()) {
6163 if (used_omap_head
.count(o
->onode
.nid
)) {
6164 derr
<< "fsck error: " << oid
<< " omap_head " << o
->onode
.nid
6165 << " already in use" << dendl
;
6168 used_omap_head
.insert(o
->onode
.nid
);
6173 dout(1) << __func__
<< " checking shared_blobs" << dendl
;
6174 it
= db
->get_iterator(PREFIX_SHARED_BLOB
);
6176 for (it
->lower_bound(string()); it
->valid(); it
->next()) {
6177 string key
= it
->key();
6179 if (get_key_shared_blob(key
, &sbid
)) {
6180 derr
<< "fsck error: bad key '" << key
6181 << "' in shared blob namespace" << dendl
;
6185 auto p
= sb_info
.find(sbid
);
6186 if (p
== sb_info
.end()) {
6187 derr
<< "fsck error: found stray shared blob data for sbid 0x"
6188 << std::hex
<< sbid
<< std::dec
<< dendl
;
6192 sb_info_t
& sbi
= p
->second
;
6193 bluestore_shared_blob_t
shared_blob(sbid
);
6194 bufferlist bl
= it
->value();
6195 bufferlist::iterator blp
= bl
.begin();
6196 ::decode(shared_blob
, blp
);
6197 dout(20) << __func__
<< " " << *sbi
.sb
<< " " << shared_blob
<< dendl
;
6198 if (shared_blob
.ref_map
!= sbi
.ref_map
) {
6199 derr
<< "fsck error: shared blob 0x" << std::hex
<< sbid
6200 << std::dec
<< " ref_map " << shared_blob
.ref_map
6201 << " != expected " << sbi
.ref_map
<< dendl
;
6204 PExtentVector extents
;
6205 for (auto &r
: shared_blob
.ref_map
.ref_map
) {
6206 extents
.emplace_back(bluestore_pextent_t(r
.first
, r
.second
.length
));
6208 errors
+= _fsck_check_extents(p
->second
.oids
.front(),
6210 p
->second
.compressed
,
6212 fm
->get_alloc_size(),
6218 for (auto &p
: sb_info
) {
6219 derr
<< "fsck error: shared_blob 0x" << p
.first
6220 << " key is missing (" << *p
.second
.sb
<< ")" << dendl
;
6223 if (!(actual_statfs
== expected_statfs
)) {
6224 derr
<< "fsck error: actual " << actual_statfs
6225 << " != expected " << expected_statfs
<< dendl
;
6229 dout(1) << __func__
<< " checking for stray omap data" << dendl
;
6230 it
= db
->get_iterator(PREFIX_OMAP
);
6232 for (it
->lower_bound(string()); it
->valid(); it
->next()) {
6234 _key_decode_u64(it
->key().c_str(), &omap_head
);
6235 if (used_omap_head
.count(omap_head
) == 0) {
6236 derr
<< "fsck error: found stray omap data on omap_head "
6237 << omap_head
<< dendl
;
6243 dout(1) << __func__
<< " checking deferred events" << dendl
;
6244 it
= db
->get_iterator(PREFIX_DEFERRED
);
6246 for (it
->lower_bound(string()); it
->valid(); it
->next()) {
6247 bufferlist bl
= it
->value();
6248 bufferlist::iterator p
= bl
.begin();
6249 bluestore_deferred_transaction_t wt
;
6252 } catch (buffer::error
& e
) {
6253 derr
<< "fsck error: failed to decode deferred txn "
6254 << pretty_binary_string(it
->key()) << dendl
;
6258 dout(20) << __func__
<< " deferred " << wt
.seq
6259 << " ops " << wt
.ops
.size()
6260 << " released 0x" << std::hex
<< wt
.released
<< std::dec
<< dendl
;
6261 for (auto e
= wt
.released
.begin(); e
!= wt
.released
.end(); ++e
) {
6263 e
.get_start(), e
.get_len(), fm
->get_alloc_size(), used_blocks
,
6264 [&](uint64_t pos
, mempool_dynamic_bitset
&bs
) {
6265 assert(pos
< bs
.size());
6273 dout(1) << __func__
<< " checking freelist vs allocated" << dendl
;
6275 // remove bluefs_extents from used set since the freelist doesn't
6276 // know they are allocated.
6277 for (auto e
= bluefs_extents
.begin(); e
!= bluefs_extents
.end(); ++e
) {
6279 e
.get_start(), e
.get_len(), fm
->get_alloc_size(), used_blocks
,
6280 [&](uint64_t pos
, mempool_dynamic_bitset
&bs
) {
6281 assert(pos
< bs
.size());
6286 fm
->enumerate_reset();
6287 uint64_t offset
, length
;
6288 while (fm
->enumerate_next(&offset
, &length
)) {
6289 bool intersects
= false;
6291 offset
, length
, fm
->get_alloc_size(), used_blocks
,
6292 [&](uint64_t pos
, mempool_dynamic_bitset
&bs
) {
6293 assert(pos
< bs
.size());
6302 if (offset
== SUPER_RESERVED
&&
6303 length
== min_alloc_size
- SUPER_RESERVED
) {
6304 // this is due to the change just after luminous to min_alloc_size
6305 // granularity allocations, and our baked in assumption at the top
6306 // of _fsck that 0~ROUND_UP_TO(SUPER_RESERVED,min_alloc_size) is used
6307 // (vs luminous's ROUND_UP_TO(SUPER_RESERVED,block_size)). harmless,
6308 // since we will never allocate this region below min_alloc_size.
6309 dout(10) << __func__
<< " ignoring free extent between SUPER_RESERVED"
6310 << " and min_alloc_size, 0x" << std::hex
<< offset
<< "~"
6313 derr
<< "fsck error: free extent 0x" << std::hex
<< offset
6314 << "~" << length
<< std::dec
6315 << " intersects allocated blocks" << dendl
;
6320 fm
->enumerate_reset();
6321 size_t count
= used_blocks
.count();
6322 if (used_blocks
.size() != count
) {
6323 assert(used_blocks
.size() > count
);
6326 size_t start
= used_blocks
.find_first();
6327 while (start
!= decltype(used_blocks
)::npos
) {
6330 size_t next
= used_blocks
.find_next(cur
);
6331 if (next
!= cur
+ 1) {
6332 derr
<< "fsck error: leaked extent 0x" << std::hex
6333 << ((uint64_t)start
* fm
->get_alloc_size()) << "~"
6334 << ((cur
+ 1 - start
) * fm
->get_alloc_size()) << std::dec
6347 mempool_thread
.shutdown();
6354 it
.reset(); // before db is closed
6363 // fatal errors take precedence
6367 dout(2) << __func__
<< " " << num_objects
<< " objects, "
6368 << num_sharded_objects
<< " of them sharded. "
6370 dout(2) << __func__
<< " " << num_extents
<< " extents to "
6371 << num_blobs
<< " blobs, "
6372 << num_spanning_blobs
<< " spanning, "
6373 << num_shared_blobs
<< " shared."
6376 utime_t duration
= ceph_clock_now() - start
;
6377 dout(1) << __func__
<< " finish with " << errors
<< " errors, " << repaired
6378 << " repaired, " << (errors
- repaired
) << " remaining in "
6379 << duration
<< " seconds" << dendl
;
6380 return errors
- repaired
;
6383 void BlueStore::collect_metadata(map
<string
,string
> *pm
)
6385 dout(10) << __func__
<< dendl
;
6386 bdev
->collect_metadata("bluestore_bdev_", pm
);
6388 (*pm
)["bluefs"] = "1";
6389 (*pm
)["bluefs_single_shared_device"] = stringify((int)bluefs_single_shared_device
);
6390 bluefs
->collect_metadata(pm
);
6392 (*pm
)["bluefs"] = "0";
6396 int BlueStore::statfs(struct store_statfs_t
*buf
)
6399 buf
->total
= bdev
->get_size();
6400 buf
->available
= alloc
->get_free();
6403 // part of our shared device is "free" according to BlueFS, but we
6404 // can't touch bluestore_bluefs_min of it.
6405 int64_t shared_available
= std::min(
6406 bluefs
->get_free(bluefs_shared_bdev
),
6407 bluefs
->get_total(bluefs_shared_bdev
) - cct
->_conf
->bluestore_bluefs_min
);
6408 if (shared_available
> 0) {
6409 buf
->available
+= shared_available
;
6414 std::lock_guard
<std::mutex
> l(vstatfs_lock
);
6416 buf
->allocated
= vstatfs
.allocated();
6417 buf
->stored
= vstatfs
.stored();
6418 buf
->compressed
= vstatfs
.compressed();
6419 buf
->compressed_original
= vstatfs
.compressed_original();
6420 buf
->compressed_allocated
= vstatfs
.compressed_allocated();
6423 dout(20) << __func__
<< *buf
<< dendl
;
6430 BlueStore::CollectionRef
BlueStore::_get_collection(const coll_t
& cid
)
6432 RWLock::RLocker
l(coll_lock
);
6433 ceph::unordered_map
<coll_t
,CollectionRef
>::iterator cp
= coll_map
.find(cid
);
6434 if (cp
== coll_map
.end())
6435 return CollectionRef();
6439 void BlueStore::_queue_reap_collection(CollectionRef
& c
)
6441 dout(10) << __func__
<< " " << c
<< " " << c
->cid
<< dendl
;
6442 // _reap_collections and this in the same thread,
6443 // so no need a lock.
6444 removed_collections
.push_back(c
);
6447 void BlueStore::_reap_collections()
6450 list
<CollectionRef
> removed_colls
;
6452 // _queue_reap_collection and this in the same thread.
6453 // So no need a lock.
6454 if (!removed_collections
.empty())
6455 removed_colls
.swap(removed_collections
);
6460 list
<CollectionRef
>::iterator p
= removed_colls
.begin();
6461 while (p
!= removed_colls
.end()) {
6462 CollectionRef c
= *p
;
6463 dout(10) << __func__
<< " " << c
<< " " << c
->cid
<< dendl
;
6464 if (c
->onode_map
.map_any([&](OnodeRef o
) {
6466 if (o
->flushing_count
.load()) {
6467 dout(10) << __func__
<< " " << c
<< " " << c
->cid
<< " " << o
->oid
6468 << " flush_txns " << o
->flushing_count
<< dendl
;
6476 c
->onode_map
.clear();
6477 p
= removed_colls
.erase(p
);
6478 dout(10) << __func__
<< " " << c
<< " " << c
->cid
<< " done" << dendl
;
6480 if (removed_colls
.empty()) {
6481 dout(10) << __func__
<< " all reaped" << dendl
;
6483 removed_collections
.splice(removed_collections
.begin(), removed_colls
);
6487 void BlueStore::_update_cache_logger()
6489 uint64_t num_onodes
= 0;
6490 uint64_t num_extents
= 0;
6491 uint64_t num_blobs
= 0;
6492 uint64_t num_buffers
= 0;
6493 uint64_t num_buffer_bytes
= 0;
6494 for (auto c
: cache_shards
) {
6495 c
->add_stats(&num_onodes
, &num_extents
, &num_blobs
,
6496 &num_buffers
, &num_buffer_bytes
);
6498 logger
->set(l_bluestore_onodes
, num_onodes
);
6499 logger
->set(l_bluestore_extents
, num_extents
);
6500 logger
->set(l_bluestore_blobs
, num_blobs
);
6501 logger
->set(l_bluestore_buffers
, num_buffers
);
6502 logger
->set(l_bluestore_buffer_bytes
, num_buffer_bytes
);
6508 ObjectStore::CollectionHandle
BlueStore::open_collection(const coll_t
& cid
)
6510 return _get_collection(cid
);
6513 bool BlueStore::exists(const coll_t
& cid
, const ghobject_t
& oid
)
6515 CollectionHandle c
= _get_collection(cid
);
6518 return exists(c
, oid
);
6521 bool BlueStore::exists(CollectionHandle
&c_
, const ghobject_t
& oid
)
6523 Collection
*c
= static_cast<Collection
*>(c_
.get());
6524 dout(10) << __func__
<< " " << c
->cid
<< " " << oid
<< dendl
;
6531 RWLock::RLocker
l(c
->lock
);
6532 OnodeRef o
= c
->get_onode(oid
, false);
6533 if (!o
|| !o
->exists
)
6540 int BlueStore::stat(
6542 const ghobject_t
& oid
,
6546 CollectionHandle c
= _get_collection(cid
);
6549 return stat(c
, oid
, st
, allow_eio
);
6552 int BlueStore::stat(
6553 CollectionHandle
&c_
,
6554 const ghobject_t
& oid
,
6558 Collection
*c
= static_cast<Collection
*>(c_
.get());
6561 dout(10) << __func__
<< " " << c
->get_cid() << " " << oid
<< dendl
;
6564 RWLock::RLocker
l(c
->lock
);
6565 OnodeRef o
= c
->get_onode(oid
, false);
6566 if (!o
|| !o
->exists
)
6568 st
->st_size
= o
->onode
.size
;
6569 st
->st_blksize
= 4096;
6570 st
->st_blocks
= (st
->st_size
+ st
->st_blksize
- 1) / st
->st_blksize
;
6575 if (_debug_mdata_eio(oid
)) {
6577 derr
<< __func__
<< " " << c
->cid
<< " " << oid
<< " INJECT EIO" << dendl
;
6581 int BlueStore::set_collection_opts(
6583 const pool_opts_t
& opts
)
6585 CollectionHandle ch
= _get_collection(cid
);
6588 Collection
*c
= static_cast<Collection
*>(ch
.get());
6589 dout(15) << __func__
<< " " << cid
<< " options " << opts
<< dendl
;
6592 RWLock::WLocker
l(c
->lock
);
6593 c
->pool_opts
= opts
;
6597 int BlueStore::read(
6599 const ghobject_t
& oid
,
6605 CollectionHandle c
= _get_collection(cid
);
6608 return read(c
, oid
, offset
, length
, bl
, op_flags
);
6611 int BlueStore::read(
6612 CollectionHandle
&c_
,
6613 const ghobject_t
& oid
,
6619 utime_t start
= ceph_clock_now();
6620 Collection
*c
= static_cast<Collection
*>(c_
.get());
6621 const coll_t
&cid
= c
->get_cid();
6622 dout(15) << __func__
<< " " << cid
<< " " << oid
6623 << " 0x" << std::hex
<< offset
<< "~" << length
<< std::dec
6631 RWLock::RLocker
l(c
->lock
);
6632 utime_t start1
= ceph_clock_now();
6633 OnodeRef o
= c
->get_onode(oid
, false);
6634 logger
->tinc(l_bluestore_read_onode_meta_lat
, ceph_clock_now() - start1
);
6635 if (!o
|| !o
->exists
) {
6640 if (offset
== length
&& offset
== 0)
6641 length
= o
->onode
.size
;
6643 r
= _do_read(c
, o
, offset
, length
, bl
, op_flags
);
6645 logger
->inc(l_bluestore_read_eio
);
6650 if (r
>= 0 && _debug_data_eio(oid
)) {
6652 derr
<< __func__
<< " " << c
->cid
<< " " << oid
<< " INJECT EIO" << dendl
;
6653 } else if (cct
->_conf
->bluestore_debug_random_read_err
&&
6654 (rand() % (int)(cct
->_conf
->bluestore_debug_random_read_err
* 100.0)) == 0) {
6655 dout(0) << __func__
<< ": inject random EIO" << dendl
;
6658 dout(10) << __func__
<< " " << cid
<< " " << oid
6659 << " 0x" << std::hex
<< offset
<< "~" << length
<< std::dec
6660 << " = " << r
<< dendl
;
6661 logger
->tinc(l_bluestore_read_lat
, ceph_clock_now() - start
);
6665 // --------------------------------------------------------
6666 // intermediate data structures used while reading
6668 uint64_t logical_offset
;
6669 uint64_t blob_xoffset
; //region offset within the blob
6673 // used later in read process
6677 region_t(uint64_t offset
, uint64_t b_offs
, uint64_t len
)
6678 : logical_offset(offset
),
6679 blob_xoffset(b_offs
),
6681 region_t(const region_t
& from
)
6682 : logical_offset(from
.logical_offset
),
6683 blob_xoffset(from
.blob_xoffset
),
6684 length(from
.length
){}
6686 friend ostream
& operator<<(ostream
& out
, const region_t
& r
) {
6687 return out
<< "0x" << std::hex
<< r
.logical_offset
<< ":"
6688 << r
.blob_xoffset
<< "~" << r
.length
<< std::dec
;
6692 typedef list
<region_t
> regions2read_t
;
6693 typedef map
<BlueStore::BlobRef
, regions2read_t
> blobs2read_t
;
6695 int BlueStore::_do_read(
6705 int read_cache_policy
= 0; // do not bypass clean or dirty cache
6707 dout(20) << __func__
<< " 0x" << std::hex
<< offset
<< "~" << length
6708 << " size 0x" << o
->onode
.size
<< " (" << std::dec
6709 << o
->onode
.size
<< ")" << dendl
;
6712 if (offset
>= o
->onode
.size
) {
6716 // generally, don't buffer anything, unless the client explicitly requests
6718 bool buffered
= false;
6719 if (op_flags
& CEPH_OSD_OP_FLAG_FADVISE_WILLNEED
) {
6720 dout(20) << __func__
<< " will do buffered read" << dendl
;
6722 } else if (cct
->_conf
->bluestore_default_buffered_read
&&
6723 (op_flags
& (CEPH_OSD_OP_FLAG_FADVISE_DONTNEED
|
6724 CEPH_OSD_OP_FLAG_FADVISE_NOCACHE
)) == 0) {
6725 dout(20) << __func__
<< " defaulting to buffered read" << dendl
;
6729 if (offset
+ length
> o
->onode
.size
) {
6730 length
= o
->onode
.size
- offset
;
6733 utime_t start
= ceph_clock_now();
6734 o
->extent_map
.fault_range(db
, offset
, length
);
6735 logger
->tinc(l_bluestore_read_onode_meta_lat
, ceph_clock_now() - start
);
6738 ready_regions_t ready_regions
;
6740 // for deep-scrub, we only read dirty cache and bypass clean cache in
6741 // order to read underlying block device in case there are silent disk errors.
6742 if (op_flags
& CEPH_OSD_OP_FLAG_BYPASS_CLEAN_CACHE
) {
6743 dout(20) << __func__
<< " will bypass cache and do direct read" << dendl
;
6744 read_cache_policy
= BufferSpace::BYPASS_CLEAN_CACHE
;
6747 // build blob-wise list to of stuff read (that isn't cached)
6748 blobs2read_t blobs2read
;
6749 unsigned left
= length
;
6750 uint64_t pos
= offset
;
6751 unsigned num_regions
= 0;
6752 auto lp
= o
->extent_map
.seek_lextent(offset
);
6753 while (left
> 0 && lp
!= o
->extent_map
.extent_map
.end()) {
6754 if (pos
< lp
->logical_offset
) {
6755 unsigned hole
= lp
->logical_offset
- pos
;
6759 dout(30) << __func__
<< " hole 0x" << std::hex
<< pos
<< "~" << hole
6760 << std::dec
<< dendl
;
6764 BlobRef
& bptr
= lp
->blob
;
6765 unsigned l_off
= pos
- lp
->logical_offset
;
6766 unsigned b_off
= l_off
+ lp
->blob_offset
;
6767 unsigned b_len
= std::min(left
, lp
->length
- l_off
);
6769 ready_regions_t cache_res
;
6770 interval_set
<uint32_t> cache_interval
;
6771 bptr
->shared_blob
->bc
.read(
6772 bptr
->shared_blob
->get_cache(), b_off
, b_len
, cache_res
, cache_interval
,
6774 dout(20) << __func__
<< " blob " << *bptr
<< std::hex
6775 << " need 0x" << b_off
<< "~" << b_len
6776 << " cache has 0x" << cache_interval
6777 << std::dec
<< dendl
;
6779 auto pc
= cache_res
.begin();
6782 if (pc
!= cache_res
.end() &&
6783 pc
->first
== b_off
) {
6784 l
= pc
->second
.length();
6785 ready_regions
[pos
].claim(pc
->second
);
6786 dout(30) << __func__
<< " use cache 0x" << std::hex
<< pos
<< ": 0x"
6787 << b_off
<< "~" << l
<< std::dec
<< dendl
;
6791 if (pc
!= cache_res
.end()) {
6792 assert(pc
->first
> b_off
);
6793 l
= pc
->first
- b_off
;
6795 dout(30) << __func__
<< " will read 0x" << std::hex
<< pos
<< ": 0x"
6796 << b_off
<< "~" << l
<< std::dec
<< dendl
;
6797 blobs2read
[bptr
].emplace_back(region_t(pos
, b_off
, l
));
6808 // read raw blob data. use aio if we have >1 blobs to read.
6809 start
= ceph_clock_now(); // for the sake of simplicity
6810 // measure the whole block below.
6811 // The error isn't that much...
6812 vector
<bufferlist
> compressed_blob_bls
;
6813 IOContext
ioc(cct
, NULL
, true); // allow EIO
6814 for (auto& p
: blobs2read
) {
6815 const BlobRef
& bptr
= p
.first
;
6816 dout(20) << __func__
<< " blob " << *bptr
<< std::hex
6817 << " need " << p
.second
<< std::dec
<< dendl
;
6818 if (bptr
->get_blob().is_compressed()) {
6819 // read the whole thing
6820 if (compressed_blob_bls
.empty()) {
6821 // ensure we avoid any reallocation on subsequent blobs
6822 compressed_blob_bls
.reserve(blobs2read
.size());
6824 compressed_blob_bls
.push_back(bufferlist());
6825 bufferlist
& bl
= compressed_blob_bls
.back();
6826 r
= bptr
->get_blob().map(
6827 0, bptr
->get_blob().get_ondisk_length(),
6828 [&](uint64_t offset
, uint64_t length
) {
6830 // use aio if there are more regions to read than those in this blob
6831 if (num_regions
> p
.second
.size()) {
6832 r
= bdev
->aio_read(offset
, length
, &bl
, &ioc
);
6834 r
= bdev
->read(offset
, length
, &bl
, &ioc
, false);
6841 derr
<< __func__
<< " bdev-read failed: " << cpp_strerror(r
) << dendl
;
6843 // propagate EIO to caller
6850 for (auto& reg
: p
.second
) {
6851 // determine how much of the blob to read
6852 uint64_t chunk_size
= bptr
->get_blob().get_chunk_size(block_size
);
6853 reg
.r_off
= reg
.blob_xoffset
;
6854 uint64_t r_len
= reg
.length
;
6855 reg
.front
= reg
.r_off
% chunk_size
;
6857 reg
.r_off
-= reg
.front
;
6860 unsigned tail
= r_len
% chunk_size
;
6862 r_len
+= chunk_size
- tail
;
6864 dout(20) << __func__
<< " region 0x" << std::hex
6865 << reg
.logical_offset
6866 << ": 0x" << reg
.blob_xoffset
<< "~" << reg
.length
6867 << " reading 0x" << reg
.r_off
<< "~" << r_len
<< std::dec
6871 r
= bptr
->get_blob().map(
6873 [&](uint64_t offset
, uint64_t length
) {
6875 // use aio if there is more than one region to read
6876 if (num_regions
> 1) {
6877 r
= bdev
->aio_read(offset
, length
, ®
.bl
, &ioc
);
6879 r
= bdev
->read(offset
, length
, ®
.bl
, &ioc
, false);
6886 derr
<< __func__
<< " bdev-read failed: " << cpp_strerror(r
)
6889 // propagate EIO to caller
6894 assert(reg
.bl
.length() == r_len
);
6898 if (ioc
.has_pending_aios()) {
6899 bdev
->aio_submit(&ioc
);
6900 dout(20) << __func__
<< " waiting for aio" << dendl
;
6902 r
= ioc
.get_return_value();
6904 assert(r
== -EIO
); // no other errors allowed
6908 logger
->tinc(l_bluestore_read_wait_aio_lat
, ceph_clock_now() - start
);
6910 // enumerate and decompress desired blobs
6911 auto p
= compressed_blob_bls
.begin();
6912 blobs2read_t::iterator b2r_it
= blobs2read
.begin();
6913 while (b2r_it
!= blobs2read
.end()) {
6914 const BlobRef
& bptr
= b2r_it
->first
;
6915 dout(20) << __func__
<< " blob " << *bptr
<< std::hex
6916 << " need 0x" << b2r_it
->second
<< std::dec
<< dendl
;
6917 if (bptr
->get_blob().is_compressed()) {
6918 assert(p
!= compressed_blob_bls
.end());
6919 bufferlist
& compressed_bl
= *p
++;
6920 if (_verify_csum(o
, &bptr
->get_blob(), 0, compressed_bl
,
6921 b2r_it
->second
.front().logical_offset
) < 0) {
6925 r
= _decompress(compressed_bl
, &raw_bl
);
6929 bptr
->shared_blob
->bc
.did_read(bptr
->shared_blob
->get_cache(), 0,
6932 for (auto& i
: b2r_it
->second
) {
6933 ready_regions
[i
.logical_offset
].substr_of(
6934 raw_bl
, i
.blob_xoffset
, i
.length
);
6937 for (auto& reg
: b2r_it
->second
) {
6938 if (_verify_csum(o
, &bptr
->get_blob(), reg
.r_off
, reg
.bl
,
6939 reg
.logical_offset
) < 0) {
6943 bptr
->shared_blob
->bc
.did_read(bptr
->shared_blob
->get_cache(),
6947 // prune and keep result
6948 ready_regions
[reg
.logical_offset
].substr_of(
6949 reg
.bl
, reg
.front
, reg
.length
);
6955 // generate a resulting buffer
6956 auto pr
= ready_regions
.begin();
6957 auto pr_end
= ready_regions
.end();
6959 while (pos
< length
) {
6960 if (pr
!= pr_end
&& pr
->first
== pos
+ offset
) {
6961 dout(30) << __func__
<< " assemble 0x" << std::hex
<< pos
6962 << ": data from 0x" << pr
->first
<< "~" << pr
->second
.length()
6963 << std::dec
<< dendl
;
6964 pos
+= pr
->second
.length();
6965 bl
.claim_append(pr
->second
);
6968 uint64_t l
= length
- pos
;
6970 assert(pr
->first
> pos
+ offset
);
6971 l
= pr
->first
- (pos
+ offset
);
6973 dout(30) << __func__
<< " assemble 0x" << std::hex
<< pos
6974 << ": zeros for 0x" << (pos
+ offset
) << "~" << l
6975 << std::dec
<< dendl
;
6980 assert(bl
.length() == length
);
6981 assert(pos
== length
);
6982 assert(pr
== pr_end
);
6987 int BlueStore::_verify_csum(OnodeRef
& o
,
6988 const bluestore_blob_t
* blob
, uint64_t blob_xoffset
,
6989 const bufferlist
& bl
,
6990 uint64_t logical_offset
) const
6994 utime_t start
= ceph_clock_now();
6995 int r
= blob
->verify_csum(blob_xoffset
, bl
, &bad
, &bad_csum
);
7001 blob
->get_csum_chunk_size(),
7002 [&](uint64_t offset
, uint64_t length
) {
7003 pex
.emplace_back(bluestore_pextent_t(offset
, length
));
7006 derr
<< __func__
<< " bad "
7007 << Checksummer::get_csum_type_string(blob
->csum_type
)
7008 << "/0x" << std::hex
<< blob
->get_csum_chunk_size()
7009 << " checksum at blob offset 0x" << bad
7010 << ", got 0x" << bad_csum
<< ", expected 0x"
7011 << blob
->get_csum_item(bad
/ blob
->get_csum_chunk_size()) << std::dec
7012 << ", device location " << pex
7013 << ", logical extent 0x" << std::hex
7014 << (logical_offset
+ bad
- blob_xoffset
) << "~"
7015 << blob
->get_csum_chunk_size() << std::dec
7016 << ", object " << o
->oid
7019 derr
<< __func__
<< " failed with exit code: " << cpp_strerror(r
) << dendl
;
7022 logger
->tinc(l_bluestore_csum_lat
, ceph_clock_now() - start
);
7026 int BlueStore::_decompress(bufferlist
& source
, bufferlist
* result
)
7029 utime_t start
= ceph_clock_now();
7030 bufferlist::iterator i
= source
.begin();
7031 bluestore_compression_header_t chdr
;
7033 int alg
= int(chdr
.type
);
7034 CompressorRef cp
= compressor
;
7035 if (!cp
|| (int)cp
->get_type() != alg
) {
7036 cp
= Compressor::create(cct
, alg
);
7040 // if compressor isn't available - error, because cannot return
7041 // decompressed data?
7042 derr
<< __func__
<< " can't load decompressor " << alg
<< dendl
;
7045 r
= cp
->decompress(i
, chdr
.length
, *result
);
7047 derr
<< __func__
<< " decompression failed with exit code " << r
<< dendl
;
7051 logger
->tinc(l_bluestore_decompress_lat
, ceph_clock_now() - start
);
7055 // this stores fiemap into interval_set, other variations
7056 // use it internally
7057 int BlueStore::_fiemap(
7058 CollectionHandle
&c_
,
7059 const ghobject_t
& oid
,
7062 interval_set
<uint64_t>& destset
)
7064 Collection
*c
= static_cast<Collection
*>(c_
.get());
7068 RWLock::RLocker
l(c
->lock
);
7070 OnodeRef o
= c
->get_onode(oid
, false);
7071 if (!o
|| !o
->exists
) {
7076 dout(20) << __func__
<< " 0x" << std::hex
<< offset
<< "~" << length
7077 << " size 0x" << o
->onode
.size
<< std::dec
<< dendl
;
7079 boost::intrusive::set
<Extent
>::iterator ep
, eend
;
7080 if (offset
>= o
->onode
.size
)
7083 if (offset
+ length
> o
->onode
.size
) {
7084 length
= o
->onode
.size
- offset
;
7087 o
->extent_map
.fault_range(db
, offset
, length
);
7088 eend
= o
->extent_map
.extent_map
.end();
7089 ep
= o
->extent_map
.seek_lextent(offset
);
7090 while (length
> 0) {
7091 dout(20) << __func__
<< " offset " << offset
<< dendl
;
7092 if (ep
!= eend
&& ep
->logical_offset
+ ep
->length
<= offset
) {
7097 uint64_t x_len
= length
;
7098 if (ep
!= eend
&& ep
->logical_offset
<= offset
) {
7099 uint64_t x_off
= offset
- ep
->logical_offset
;
7100 x_len
= MIN(x_len
, ep
->length
- x_off
);
7101 dout(30) << __func__
<< " lextent 0x" << std::hex
<< offset
<< "~"
7102 << x_len
<< std::dec
<< " blob " << ep
->blob
<< dendl
;
7103 destset
.insert(offset
, x_len
);
7106 if (x_off
+ x_len
== ep
->length
)
7111 ep
->logical_offset
> offset
&&
7112 ep
->logical_offset
- offset
< x_len
) {
7113 x_len
= ep
->logical_offset
- offset
;
7121 dout(20) << __func__
<< " 0x" << std::hex
<< offset
<< "~" << length
7122 << " size = 0x(" << destset
<< ")" << std::dec
<< dendl
;
7126 int BlueStore::fiemap(
7128 const ghobject_t
& oid
,
7133 CollectionHandle c
= _get_collection(cid
);
7136 return fiemap(c
, oid
, offset
, len
, bl
);
7139 int BlueStore::fiemap(
7140 CollectionHandle
&c_
,
7141 const ghobject_t
& oid
,
7146 interval_set
<uint64_t> m
;
7147 int r
= _fiemap(c_
, oid
, offset
, length
, m
);
7154 int BlueStore::fiemap(
7156 const ghobject_t
& oid
,
7159 map
<uint64_t, uint64_t>& destmap
)
7161 CollectionHandle c
= _get_collection(cid
);
7164 return fiemap(c
, oid
, offset
, len
, destmap
);
7167 int BlueStore::fiemap(
7168 CollectionHandle
&c_
,
7169 const ghobject_t
& oid
,
7172 map
<uint64_t, uint64_t>& destmap
)
7174 interval_set
<uint64_t> m
;
7175 int r
= _fiemap(c_
, oid
, offset
, length
, m
);
7177 m
.move_into(destmap
);
7182 int BlueStore::getattr(
7184 const ghobject_t
& oid
,
7188 CollectionHandle c
= _get_collection(cid
);
7191 return getattr(c
, oid
, name
, value
);
7194 int BlueStore::getattr(
7195 CollectionHandle
&c_
,
7196 const ghobject_t
& oid
,
7200 Collection
*c
= static_cast<Collection
*>(c_
.get());
7201 dout(15) << __func__
<< " " << c
->cid
<< " " << oid
<< " " << name
<< dendl
;
7207 RWLock::RLocker
l(c
->lock
);
7208 mempool::bluestore_cache_other::string
k(name
);
7210 OnodeRef o
= c
->get_onode(oid
, false);
7211 if (!o
|| !o
->exists
) {
7216 if (!o
->onode
.attrs
.count(k
)) {
7220 value
= o
->onode
.attrs
[k
];
7224 if (r
== 0 && _debug_mdata_eio(oid
)) {
7226 derr
<< __func__
<< " " << c
->cid
<< " " << oid
<< " INJECT EIO" << dendl
;
7228 dout(10) << __func__
<< " " << c
->cid
<< " " << oid
<< " " << name
7229 << " = " << r
<< dendl
;
7234 int BlueStore::getattrs(
7236 const ghobject_t
& oid
,
7237 map
<string
,bufferptr
>& aset
)
7239 CollectionHandle c
= _get_collection(cid
);
7242 return getattrs(c
, oid
, aset
);
7245 int BlueStore::getattrs(
7246 CollectionHandle
&c_
,
7247 const ghobject_t
& oid
,
7248 map
<string
,bufferptr
>& aset
)
7250 Collection
*c
= static_cast<Collection
*>(c_
.get());
7251 dout(15) << __func__
<< " " << c
->cid
<< " " << oid
<< dendl
;
7257 RWLock::RLocker
l(c
->lock
);
7259 OnodeRef o
= c
->get_onode(oid
, false);
7260 if (!o
|| !o
->exists
) {
7264 for (auto& i
: o
->onode
.attrs
) {
7265 aset
.emplace(i
.first
.c_str(), i
.second
);
7271 if (r
== 0 && _debug_mdata_eio(oid
)) {
7273 derr
<< __func__
<< " " << c
->cid
<< " " << oid
<< " INJECT EIO" << dendl
;
7275 dout(10) << __func__
<< " " << c
->cid
<< " " << oid
7276 << " = " << r
<< dendl
;
7280 int BlueStore::list_collections(vector
<coll_t
>& ls
)
7282 RWLock::RLocker
l(coll_lock
);
7283 for (ceph::unordered_map
<coll_t
, CollectionRef
>::iterator p
= coll_map
.begin();
7284 p
!= coll_map
.end();
7286 ls
.push_back(p
->first
);
7290 bool BlueStore::collection_exists(const coll_t
& c
)
7292 RWLock::RLocker
l(coll_lock
);
7293 return coll_map
.count(c
);
7296 int BlueStore::collection_empty(const coll_t
& cid
, bool *empty
)
7298 dout(15) << __func__
<< " " << cid
<< dendl
;
7299 vector
<ghobject_t
> ls
;
7301 int r
= collection_list(cid
, ghobject_t(), ghobject_t::get_max(), 1,
7304 derr
<< __func__
<< " collection_list returned: " << cpp_strerror(r
)
7308 *empty
= ls
.empty();
7309 dout(10) << __func__
<< " " << cid
<< " = " << (int)(*empty
) << dendl
;
7313 int BlueStore::collection_bits(const coll_t
& cid
)
7315 dout(15) << __func__
<< " " << cid
<< dendl
;
7316 CollectionRef c
= _get_collection(cid
);
7319 RWLock::RLocker
l(c
->lock
);
7320 dout(10) << __func__
<< " " << cid
<< " = " << c
->cnode
.bits
<< dendl
;
7321 return c
->cnode
.bits
;
7324 int BlueStore::collection_list(
7325 const coll_t
& cid
, const ghobject_t
& start
, const ghobject_t
& end
, int max
,
7326 vector
<ghobject_t
> *ls
, ghobject_t
*pnext
)
7328 CollectionHandle c
= _get_collection(cid
);
7331 return collection_list(c
, start
, end
, max
, ls
, pnext
);
7334 int BlueStore::collection_list(
7335 CollectionHandle
&c_
, const ghobject_t
& start
, const ghobject_t
& end
, int max
,
7336 vector
<ghobject_t
> *ls
, ghobject_t
*pnext
)
7338 Collection
*c
= static_cast<Collection
*>(c_
.get());
7339 dout(15) << __func__
<< " " << c
->cid
7340 << " start " << start
<< " end " << end
<< " max " << max
<< dendl
;
7343 RWLock::RLocker
l(c
->lock
);
7344 r
= _collection_list(c
, start
, end
, max
, ls
, pnext
);
7347 dout(10) << __func__
<< " " << c
->cid
7348 << " start " << start
<< " end " << end
<< " max " << max
7349 << " = " << r
<< ", ls.size() = " << ls
->size()
7350 << ", next = " << (pnext
? *pnext
: ghobject_t()) << dendl
;
7354 int BlueStore::_collection_list(
7355 Collection
*c
, const ghobject_t
& start
, const ghobject_t
& end
, int max
,
7356 vector
<ghobject_t
> *ls
, ghobject_t
*pnext
)
7363 ghobject_t static_next
;
7364 KeyValueDB::Iterator it
;
7365 string temp_start_key
, temp_end_key
;
7366 string start_key
, end_key
;
7367 bool set_next
= false;
7372 pnext
= &static_next
;
7374 if (start
== ghobject_t::get_max() ||
7375 start
.hobj
.is_max()) {
7378 get_coll_key_range(c
->cid
, c
->cnode
.bits
, &temp_start_key
, &temp_end_key
,
7379 &start_key
, &end_key
);
7380 dout(20) << __func__
7381 << " range " << pretty_binary_string(temp_start_key
)
7382 << " to " << pretty_binary_string(temp_end_key
)
7383 << " and " << pretty_binary_string(start_key
)
7384 << " to " << pretty_binary_string(end_key
)
7385 << " start " << start
<< dendl
;
7386 it
= db
->get_iterator(PREFIX_OBJ
);
7387 if (start
== ghobject_t() ||
7388 start
.hobj
== hobject_t() ||
7389 start
== c
->cid
.get_min_hobj()) {
7390 it
->upper_bound(temp_start_key
);
7394 get_object_key(cct
, start
, &k
);
7395 if (start
.hobj
.is_temp()) {
7397 assert(k
>= temp_start_key
&& k
< temp_end_key
);
7400 assert(k
>= start_key
&& k
< end_key
);
7402 dout(20) << " start from " << pretty_binary_string(k
)
7403 << " temp=" << (int)temp
<< dendl
;
7406 if (end
.hobj
.is_max()) {
7407 pend
= temp
? temp_end_key
: end_key
;
7409 get_object_key(cct
, end
, &end_key
);
7410 if (end
.hobj
.is_temp()) {
7416 pend
= temp
? temp_end_key
: end_key
;
7419 dout(20) << __func__
<< " pend " << pretty_binary_string(pend
) << dendl
;
7421 if (!it
->valid() || it
->key() >= pend
) {
7423 dout(20) << __func__
<< " iterator not valid (end of db?)" << dendl
;
7425 dout(20) << __func__
<< " key " << pretty_binary_string(it
->key())
7426 << " >= " << end
<< dendl
;
7428 if (end
.hobj
.is_temp()) {
7431 dout(30) << __func__
<< " switch to non-temp namespace" << dendl
;
7433 it
->upper_bound(start_key
);
7435 dout(30) << __func__
<< " pend " << pretty_binary_string(pend
) << dendl
;
7440 dout(30) << __func__
<< " key " << pretty_binary_string(it
->key()) << dendl
;
7441 if (is_extent_shard_key(it
->key())) {
7446 int r
= get_key_object(it
->key(), &oid
);
7448 dout(20) << __func__
<< " oid " << oid
<< " end " << end
<< dendl
;
7449 if (ls
->size() >= (unsigned)max
) {
7450 dout(20) << __func__
<< " reached max " << max
<< dendl
;
7460 *pnext
= ghobject_t::get_max();
7466 int BlueStore::omap_get(
7467 const coll_t
& cid
, ///< [in] Collection containing oid
7468 const ghobject_t
&oid
, ///< [in] Object containing omap
7469 bufferlist
*header
, ///< [out] omap header
7470 map
<string
, bufferlist
> *out
/// < [out] Key to value map
7473 CollectionHandle c
= _get_collection(cid
);
7476 return omap_get(c
, oid
, header
, out
);
7479 int BlueStore::omap_get(
7480 CollectionHandle
&c_
, ///< [in] Collection containing oid
7481 const ghobject_t
&oid
, ///< [in] Object containing omap
7482 bufferlist
*header
, ///< [out] omap header
7483 map
<string
, bufferlist
> *out
/// < [out] Key to value map
7486 Collection
*c
= static_cast<Collection
*>(c_
.get());
7487 dout(15) << __func__
<< " " << c
->get_cid() << " oid " << oid
<< dendl
;
7490 RWLock::RLocker
l(c
->lock
);
7492 OnodeRef o
= c
->get_onode(oid
, false);
7493 if (!o
|| !o
->exists
) {
7497 if (!o
->onode
.has_omap())
7501 KeyValueDB::Iterator it
= db
->get_iterator(PREFIX_OMAP
);
7503 get_omap_header(o
->onode
.nid
, &head
);
7504 get_omap_tail(o
->onode
.nid
, &tail
);
7505 it
->lower_bound(head
);
7506 while (it
->valid()) {
7507 if (it
->key() == head
) {
7508 dout(30) << __func__
<< " got header" << dendl
;
7509 *header
= it
->value();
7510 } else if (it
->key() >= tail
) {
7511 dout(30) << __func__
<< " reached tail" << dendl
;
7515 decode_omap_key(it
->key(), &user_key
);
7516 dout(30) << __func__
<< " got " << pretty_binary_string(it
->key())
7517 << " -> " << user_key
<< dendl
;
7518 (*out
)[user_key
] = it
->value();
7524 dout(10) << __func__
<< " " << c
->get_cid() << " oid " << oid
<< " = " << r
7529 int BlueStore::omap_get_header(
7530 const coll_t
& cid
, ///< [in] Collection containing oid
7531 const ghobject_t
&oid
, ///< [in] Object containing omap
7532 bufferlist
*header
, ///< [out] omap header
7533 bool allow_eio
///< [in] don't assert on eio
7536 CollectionHandle c
= _get_collection(cid
);
7539 return omap_get_header(c
, oid
, header
, allow_eio
);
7542 int BlueStore::omap_get_header(
7543 CollectionHandle
&c_
, ///< [in] Collection containing oid
7544 const ghobject_t
&oid
, ///< [in] Object containing omap
7545 bufferlist
*header
, ///< [out] omap header
7546 bool allow_eio
///< [in] don't assert on eio
7549 Collection
*c
= static_cast<Collection
*>(c_
.get());
7550 dout(15) << __func__
<< " " << c
->get_cid() << " oid " << oid
<< dendl
;
7553 RWLock::RLocker
l(c
->lock
);
7555 OnodeRef o
= c
->get_onode(oid
, false);
7556 if (!o
|| !o
->exists
) {
7560 if (!o
->onode
.has_omap())
7565 get_omap_header(o
->onode
.nid
, &head
);
7566 if (db
->get(PREFIX_OMAP
, head
, header
) >= 0) {
7567 dout(30) << __func__
<< " got header" << dendl
;
7569 dout(30) << __func__
<< " no header" << dendl
;
7573 dout(10) << __func__
<< " " << c
->get_cid() << " oid " << oid
<< " = " << r
7578 int BlueStore::omap_get_keys(
7579 const coll_t
& cid
, ///< [in] Collection containing oid
7580 const ghobject_t
&oid
, ///< [in] Object containing omap
7581 set
<string
> *keys
///< [out] Keys defined on oid
7584 CollectionHandle c
= _get_collection(cid
);
7587 return omap_get_keys(c
, oid
, keys
);
7590 int BlueStore::omap_get_keys(
7591 CollectionHandle
&c_
, ///< [in] Collection containing oid
7592 const ghobject_t
&oid
, ///< [in] Object containing omap
7593 set
<string
> *keys
///< [out] Keys defined on oid
7596 Collection
*c
= static_cast<Collection
*>(c_
.get());
7597 dout(15) << __func__
<< " " << c
->get_cid() << " oid " << oid
<< dendl
;
7600 RWLock::RLocker
l(c
->lock
);
7602 OnodeRef o
= c
->get_onode(oid
, false);
7603 if (!o
|| !o
->exists
) {
7607 if (!o
->onode
.has_omap())
7611 KeyValueDB::Iterator it
= db
->get_iterator(PREFIX_OMAP
);
7613 get_omap_key(o
->onode
.nid
, string(), &head
);
7614 get_omap_tail(o
->onode
.nid
, &tail
);
7615 it
->lower_bound(head
);
7616 while (it
->valid()) {
7617 if (it
->key() >= tail
) {
7618 dout(30) << __func__
<< " reached tail" << dendl
;
7622 decode_omap_key(it
->key(), &user_key
);
7623 dout(30) << __func__
<< " got " << pretty_binary_string(it
->key())
7624 << " -> " << user_key
<< dendl
;
7625 keys
->insert(user_key
);
7630 dout(10) << __func__
<< " " << c
->get_cid() << " oid " << oid
<< " = " << r
7635 int BlueStore::omap_get_values(
7636 const coll_t
& cid
, ///< [in] Collection containing oid
7637 const ghobject_t
&oid
, ///< [in] Object containing omap
7638 const set
<string
> &keys
, ///< [in] Keys to get
7639 map
<string
, bufferlist
> *out
///< [out] Returned keys and values
7642 CollectionHandle c
= _get_collection(cid
);
7645 return omap_get_values(c
, oid
, keys
, out
);
7648 int BlueStore::omap_get_values(
7649 CollectionHandle
&c_
, ///< [in] Collection containing oid
7650 const ghobject_t
&oid
, ///< [in] Object containing omap
7651 const set
<string
> &keys
, ///< [in] Keys to get
7652 map
<string
, bufferlist
> *out
///< [out] Returned keys and values
7655 Collection
*c
= static_cast<Collection
*>(c_
.get());
7656 dout(15) << __func__
<< " " << c
->get_cid() << " oid " << oid
<< dendl
;
7659 RWLock::RLocker
l(c
->lock
);
7662 OnodeRef o
= c
->get_onode(oid
, false);
7663 if (!o
|| !o
->exists
) {
7667 if (!o
->onode
.has_omap())
7670 _key_encode_u64(o
->onode
.nid
, &final_key
);
7671 final_key
.push_back('.');
7672 for (set
<string
>::const_iterator p
= keys
.begin(); p
!= keys
.end(); ++p
) {
7673 final_key
.resize(9); // keep prefix
7676 if (db
->get(PREFIX_OMAP
, final_key
, &val
) >= 0) {
7677 dout(30) << __func__
<< " got " << pretty_binary_string(final_key
)
7678 << " -> " << *p
<< dendl
;
7679 out
->insert(make_pair(*p
, val
));
7683 dout(10) << __func__
<< " " << c
->get_cid() << " oid " << oid
<< " = " << r
7688 int BlueStore::omap_check_keys(
7689 const coll_t
& cid
, ///< [in] Collection containing oid
7690 const ghobject_t
&oid
, ///< [in] Object containing omap
7691 const set
<string
> &keys
, ///< [in] Keys to check
7692 set
<string
> *out
///< [out] Subset of keys defined on oid
7695 CollectionHandle c
= _get_collection(cid
);
7698 return omap_check_keys(c
, oid
, keys
, out
);
7701 int BlueStore::omap_check_keys(
7702 CollectionHandle
&c_
, ///< [in] Collection containing oid
7703 const ghobject_t
&oid
, ///< [in] Object containing omap
7704 const set
<string
> &keys
, ///< [in] Keys to check
7705 set
<string
> *out
///< [out] Subset of keys defined on oid
7708 Collection
*c
= static_cast<Collection
*>(c_
.get());
7709 dout(15) << __func__
<< " " << c
->get_cid() << " oid " << oid
<< dendl
;
7712 RWLock::RLocker
l(c
->lock
);
7715 OnodeRef o
= c
->get_onode(oid
, false);
7716 if (!o
|| !o
->exists
) {
7720 if (!o
->onode
.has_omap())
7723 _key_encode_u64(o
->onode
.nid
, &final_key
);
7724 final_key
.push_back('.');
7725 for (set
<string
>::const_iterator p
= keys
.begin(); p
!= keys
.end(); ++p
) {
7726 final_key
.resize(9); // keep prefix
7729 if (db
->get(PREFIX_OMAP
, final_key
, &val
) >= 0) {
7730 dout(30) << __func__
<< " have " << pretty_binary_string(final_key
)
7731 << " -> " << *p
<< dendl
;
7734 dout(30) << __func__
<< " miss " << pretty_binary_string(final_key
)
7735 << " -> " << *p
<< dendl
;
7739 dout(10) << __func__
<< " " << c
->get_cid() << " oid " << oid
<< " = " << r
7744 ObjectMap::ObjectMapIterator
BlueStore::get_omap_iterator(
7745 const coll_t
& cid
, ///< [in] collection
7746 const ghobject_t
&oid
///< [in] object
7749 CollectionHandle c
= _get_collection(cid
);
7751 dout(10) << __func__
<< " " << cid
<< "doesn't exist" <<dendl
;
7752 return ObjectMap::ObjectMapIterator();
7754 return get_omap_iterator(c
, oid
);
7757 ObjectMap::ObjectMapIterator
BlueStore::get_omap_iterator(
7758 CollectionHandle
&c_
, ///< [in] collection
7759 const ghobject_t
&oid
///< [in] object
7762 Collection
*c
= static_cast<Collection
*>(c_
.get());
7763 dout(10) << __func__
<< " " << c
->get_cid() << " " << oid
<< dendl
;
7765 return ObjectMap::ObjectMapIterator();
7767 RWLock::RLocker
l(c
->lock
);
7768 OnodeRef o
= c
->get_onode(oid
, false);
7769 if (!o
|| !o
->exists
) {
7770 dout(10) << __func__
<< " " << oid
<< "doesn't exist" <<dendl
;
7771 return ObjectMap::ObjectMapIterator();
7774 dout(10) << __func__
<< " has_omap = " << (int)o
->onode
.has_omap() <<dendl
;
7775 KeyValueDB::Iterator it
= db
->get_iterator(PREFIX_OMAP
);
7776 return ObjectMap::ObjectMapIterator(new OmapIteratorImpl(c
, o
, it
));
7779 // -----------------
7782 void BlueStore::_prepare_ondisk_format_super(KeyValueDB::Transaction
& t
)
7784 dout(10) << __func__
<< " ondisk_format " << ondisk_format
7785 << " min_compat_ondisk_format " << min_compat_ondisk_format
7787 assert(ondisk_format
== latest_ondisk_format
);
7790 ::encode(ondisk_format
, bl
);
7791 t
->set(PREFIX_SUPER
, "ondisk_format", bl
);
7795 ::encode(min_compat_ondisk_format
, bl
);
7796 t
->set(PREFIX_SUPER
, "min_compat_ondisk_format", bl
);
7800 int BlueStore::_open_super_meta()
7806 db
->get(PREFIX_SUPER
, "nid_max", &bl
);
7807 bufferlist::iterator p
= bl
.begin();
7812 } catch (buffer::error
& e
) {
7813 derr
<< __func__
<< " unable to read nid_max" << dendl
;
7816 dout(10) << __func__
<< " old nid_max " << nid_max
<< dendl
;
7817 nid_last
= nid_max
.load();
7824 db
->get(PREFIX_SUPER
, "blobid_max", &bl
);
7825 bufferlist::iterator p
= bl
.begin();
7830 } catch (buffer::error
& e
) {
7831 derr
<< __func__
<< " unable to read blobid_max" << dendl
;
7834 dout(10) << __func__
<< " old blobid_max " << blobid_max
<< dendl
;
7835 blobid_last
= blobid_max
.load();
7841 db
->get(PREFIX_SUPER
, "freelist_type", &bl
);
7843 freelist_type
= std::string(bl
.c_str(), bl
.length());
7844 dout(10) << __func__
<< " freelist_type " << freelist_type
<< dendl
;
7846 assert("Not Support extent freelist manager" == 0);
7851 if (cct
->_conf
->bluestore_bluefs
) {
7852 bluefs_extents
.clear();
7854 db
->get(PREFIX_SUPER
, "bluefs_extents", &bl
);
7855 bufferlist::iterator p
= bl
.begin();
7857 ::decode(bluefs_extents
, p
);
7859 catch (buffer::error
& e
) {
7860 derr
<< __func__
<< " unable to read bluefs_extents" << dendl
;
7863 dout(10) << __func__
<< " bluefs_extents 0x" << std::hex
<< bluefs_extents
7864 << std::dec
<< dendl
;
7868 int32_t compat_ondisk_format
= 0;
7871 int r
= db
->get(PREFIX_SUPER
, "ondisk_format", &bl
);
7873 // base case: kraken bluestore is v1 and readable by v1
7874 dout(20) << __func__
<< " missing ondisk_format; assuming kraken"
7877 compat_ondisk_format
= 1;
7879 auto p
= bl
.begin();
7881 ::decode(ondisk_format
, p
);
7882 } catch (buffer::error
& e
) {
7883 derr
<< __func__
<< " unable to read ondisk_format" << dendl
;
7888 r
= db
->get(PREFIX_SUPER
, "min_compat_ondisk_format", &bl
);
7890 auto p
= bl
.begin();
7892 ::decode(compat_ondisk_format
, p
);
7893 } catch (buffer::error
& e
) {
7894 derr
<< __func__
<< " unable to read compat_ondisk_format" << dendl
;
7899 dout(10) << __func__
<< " ondisk_format " << ondisk_format
7900 << " compat_ondisk_format " << compat_ondisk_format
7904 if (latest_ondisk_format
< compat_ondisk_format
) {
7905 derr
<< __func__
<< " compat_ondisk_format is "
7906 << compat_ondisk_format
<< " but we only understand version "
7907 << latest_ondisk_format
<< dendl
;
7910 if (ondisk_format
< latest_ondisk_format
) {
7911 int r
= _upgrade_super();
7919 db
->get(PREFIX_SUPER
, "min_alloc_size", &bl
);
7920 auto p
= bl
.begin();
7924 min_alloc_size
= val
;
7925 min_alloc_size_order
= ctz(val
);
7926 assert(min_alloc_size
== 1u << min_alloc_size_order
);
7927 } catch (buffer::error
& e
) {
7928 derr
<< __func__
<< " unable to read min_alloc_size" << dendl
;
7931 dout(10) << __func__
<< " min_alloc_size 0x" << std::hex
<< min_alloc_size
7932 << std::dec
<< dendl
;
7936 _set_throttle_params();
7942 _set_finisher_num();
7947 int BlueStore::_upgrade_super()
7949 dout(1) << __func__
<< " from " << ondisk_format
<< ", latest "
7950 << latest_ondisk_format
<< dendl
;
7951 assert(ondisk_format
> 0);
7952 assert(ondisk_format
< latest_ondisk_format
);
7954 if (ondisk_format
== 1) {
7956 // - super: added ondisk_format
7957 // - super: added min_readable_ondisk_format
7958 // - super: added min_compat_ondisk_format
7959 // - super: added min_alloc_size
7960 // - super: removed min_min_alloc_size
7961 KeyValueDB::Transaction t
= db
->get_transaction();
7964 db
->get(PREFIX_SUPER
, "min_min_alloc_size", &bl
);
7965 auto p
= bl
.begin();
7969 min_alloc_size
= val
;
7970 } catch (buffer::error
& e
) {
7971 derr
<< __func__
<< " failed to read min_min_alloc_size" << dendl
;
7974 t
->set(PREFIX_SUPER
, "min_alloc_size", bl
);
7975 t
->rmkey(PREFIX_SUPER
, "min_min_alloc_size");
7978 _prepare_ondisk_format_super(t
);
7979 int r
= db
->submit_transaction_sync(t
);
7984 dout(1) << __func__
<< " done" << dendl
;
7988 void BlueStore::_assign_nid(TransContext
*txc
, OnodeRef o
)
7994 uint64_t nid
= ++nid_last
;
7995 dout(20) << __func__
<< " " << nid
<< dendl
;
7997 txc
->last_nid
= nid
;
8001 uint64_t BlueStore::_assign_blobid(TransContext
*txc
)
8003 uint64_t bid
= ++blobid_last
;
8004 dout(20) << __func__
<< " " << bid
<< dendl
;
8005 txc
->last_blobid
= bid
;
8009 void BlueStore::get_db_statistics(Formatter
*f
)
8011 db
->get_statistics(f
);
8014 BlueStore::TransContext
*BlueStore::_txc_create(OpSequencer
*osr
)
8016 TransContext
*txc
= new TransContext(cct
, osr
);
8017 txc
->t
= db
->get_transaction();
8018 osr
->queue_new(txc
);
8019 dout(20) << __func__
<< " osr " << osr
<< " = " << txc
8020 << " seq " << txc
->seq
<< dendl
;
8024 void BlueStore::_txc_calc_cost(TransContext
*txc
)
8026 // this is about the simplest model for transaction cost you can
8027 // imagine. there is some fixed overhead cost by saying there is a
8028 // minimum of one "io". and then we have some cost per "io" that is
8029 // a configurable (with different hdd and ssd defaults), and add
8030 // that to the bytes value.
8031 int ios
= 1; // one "io" for the kv commit
8032 for (auto& p
: txc
->ioc
.pending_aios
) {
8033 ios
+= p
.iov
.size();
8035 auto cost
= throttle_cost_per_io
.load();
8036 txc
->cost
= ios
* cost
+ txc
->bytes
;
8037 dout(10) << __func__
<< " " << txc
<< " cost " << txc
->cost
<< " ("
8038 << ios
<< " ios * " << cost
<< " + " << txc
->bytes
8039 << " bytes)" << dendl
;
8042 void BlueStore::_txc_update_store_statfs(TransContext
*txc
)
8044 if (txc
->statfs_delta
.is_empty())
8047 logger
->inc(l_bluestore_allocated
, txc
->statfs_delta
.allocated());
8048 logger
->inc(l_bluestore_stored
, txc
->statfs_delta
.stored());
8049 logger
->inc(l_bluestore_compressed
, txc
->statfs_delta
.compressed());
8050 logger
->inc(l_bluestore_compressed_allocated
, txc
->statfs_delta
.compressed_allocated());
8051 logger
->inc(l_bluestore_compressed_original
, txc
->statfs_delta
.compressed_original());
8054 std::lock_guard
<std::mutex
> l(vstatfs_lock
);
8055 vstatfs
+= txc
->statfs_delta
;
8059 txc
->statfs_delta
.encode(bl
);
8061 txc
->t
->merge(PREFIX_STAT
, "bluestore_statfs", bl
);
8062 txc
->statfs_delta
.reset();
8065 void BlueStore::_txc_state_proc(TransContext
*txc
)
8068 dout(10) << __func__
<< " txc " << txc
8069 << " " << txc
->get_state_name() << dendl
;
8070 switch (txc
->state
) {
8071 case TransContext::STATE_PREPARE
:
8072 txc
->log_state_latency(logger
, l_bluestore_state_prepare_lat
);
8073 if (txc
->ioc
.has_pending_aios()) {
8074 txc
->state
= TransContext::STATE_AIO_WAIT
;
8075 txc
->had_ios
= true;
8076 _txc_aio_submit(txc
);
8081 case TransContext::STATE_AIO_WAIT
:
8082 txc
->log_state_latency(logger
, l_bluestore_state_aio_wait_lat
);
8083 _txc_finish_io(txc
); // may trigger blocked txc's too
8086 case TransContext::STATE_IO_DONE
:
8087 //assert(txc->osr->qlock.is_locked()); // see _txc_finish_io
8089 ++txc
->osr
->txc_with_unstable_io
;
8091 txc
->log_state_latency(logger
, l_bluestore_state_io_done_lat
);
8092 txc
->state
= TransContext::STATE_KV_QUEUED
;
8093 if (cct
->_conf
->bluestore_sync_submit_transaction
) {
8094 if (txc
->last_nid
>= nid_max
||
8095 txc
->last_blobid
>= blobid_max
) {
8096 dout(20) << __func__
8097 << " last_{nid,blobid} exceeds max, submit via kv thread"
8099 } else if (txc
->osr
->kv_committing_serially
) {
8100 dout(20) << __func__
<< " prior txc submitted via kv thread, us too"
8102 // note: this is starvation-prone. once we have a txc in a busy
8103 // sequencer that is committing serially it is possible to keep
8104 // submitting new transactions fast enough that we get stuck doing
8105 // so. the alternative is to block here... fixme?
8106 } else if (txc
->osr
->txc_with_unstable_io
) {
8107 dout(20) << __func__
<< " prior txc(s) with unstable ios "
8108 << txc
->osr
->txc_with_unstable_io
.load() << dendl
;
8109 } else if (cct
->_conf
->bluestore_debug_randomize_serial_transaction
&&
8110 rand() % cct
->_conf
->bluestore_debug_randomize_serial_transaction
8112 dout(20) << __func__
<< " DEBUG randomly forcing submit via kv thread"
8115 txc
->state
= TransContext::STATE_KV_SUBMITTED
;
8116 int r
= cct
->_conf
->bluestore_debug_omit_kv_commit
? 0 : db
->submit_transaction(txc
->t
);
8118 _txc_applied_kv(txc
);
8122 std::lock_guard
<std::mutex
> l(kv_lock
);
8123 kv_queue
.push_back(txc
);
8124 kv_cond
.notify_one();
8125 if (txc
->state
!= TransContext::STATE_KV_SUBMITTED
) {
8126 kv_queue_unsubmitted
.push_back(txc
);
8127 ++txc
->osr
->kv_committing_serially
;
8131 kv_throttle_costs
+= txc
->cost
;
8134 case TransContext::STATE_KV_SUBMITTED
:
8135 _txc_committed_kv(txc
);
8138 case TransContext::STATE_KV_DONE
:
8139 txc
->log_state_latency(logger
, l_bluestore_state_kv_done_lat
);
8140 if (txc
->deferred_txn
) {
8141 txc
->state
= TransContext::STATE_DEFERRED_QUEUED
;
8142 _deferred_queue(txc
);
8145 txc
->state
= TransContext::STATE_FINISHING
;
8148 case TransContext::STATE_DEFERRED_CLEANUP
:
8149 txc
->log_state_latency(logger
, l_bluestore_state_deferred_cleanup_lat
);
8150 txc
->state
= TransContext::STATE_FINISHING
;
8153 case TransContext::STATE_FINISHING
:
8154 txc
->log_state_latency(logger
, l_bluestore_state_finishing_lat
);
8159 derr
<< __func__
<< " unexpected txc " << txc
8160 << " state " << txc
->get_state_name() << dendl
;
8161 assert(0 == "unexpected txc state");
8167 void BlueStore::_txc_finish_io(TransContext
*txc
)
8169 dout(20) << __func__
<< " " << txc
<< dendl
;
8172 * we need to preserve the order of kv transactions,
8173 * even though aio will complete in any order.
8176 OpSequencer
*osr
= txc
->osr
.get();
8177 std::lock_guard
<std::mutex
> l(osr
->qlock
);
8178 txc
->state
= TransContext::STATE_IO_DONE
;
8180 // release aio contexts (including pinned buffers).
8181 txc
->ioc
.running_aios
.clear();
8183 OpSequencer::q_list_t::iterator p
= osr
->q
.iterator_to(*txc
);
8184 while (p
!= osr
->q
.begin()) {
8186 if (p
->state
< TransContext::STATE_IO_DONE
) {
8187 dout(20) << __func__
<< " " << txc
<< " blocked by " << &*p
<< " "
8188 << p
->get_state_name() << dendl
;
8191 if (p
->state
> TransContext::STATE_IO_DONE
) {
8197 _txc_state_proc(&*p
++);
8198 } while (p
!= osr
->q
.end() &&
8199 p
->state
== TransContext::STATE_IO_DONE
);
8201 if (osr
->kv_submitted_waiters
&&
8202 osr
->_is_all_kv_submitted()) {
8203 osr
->qcond
.notify_all();
8207 void BlueStore::_txc_write_nodes(TransContext
*txc
, KeyValueDB::Transaction t
)
8209 dout(20) << __func__
<< " txc " << txc
8210 << " onodes " << txc
->onodes
8211 << " shared_blobs " << txc
->shared_blobs
8215 for (auto o
: txc
->onodes
) {
8216 // finalize extent_map shards
8217 o
->extent_map
.update(t
, false);
8218 if (o
->extent_map
.needs_reshard()) {
8219 o
->extent_map
.reshard(db
, t
);
8220 o
->extent_map
.update(t
, true);
8221 if (o
->extent_map
.needs_reshard()) {
8222 dout(20) << __func__
<< " warning: still wants reshard, check options?"
8224 o
->extent_map
.clear_needs_reshard();
8226 logger
->inc(l_bluestore_onode_reshard
);
8231 denc(o
->onode
, bound
);
8232 o
->extent_map
.bound_encode_spanning_blobs(bound
);
8233 if (o
->onode
.extent_map_shards
.empty()) {
8234 denc(o
->extent_map
.inline_bl
, bound
);
8239 unsigned onode_part
, blob_part
, extent_part
;
8241 auto p
= bl
.get_contiguous_appender(bound
, true);
8243 onode_part
= p
.get_logical_offset();
8244 o
->extent_map
.encode_spanning_blobs(p
);
8245 blob_part
= p
.get_logical_offset() - onode_part
;
8246 if (o
->onode
.extent_map_shards
.empty()) {
8247 denc(o
->extent_map
.inline_bl
, p
);
8249 extent_part
= p
.get_logical_offset() - onode_part
- blob_part
;
8252 dout(20) << " onode " << o
->oid
<< " is " << bl
.length()
8253 << " (" << onode_part
<< " bytes onode + "
8254 << blob_part
<< " bytes spanning blobs + "
8255 << extent_part
<< " bytes inline extents)"
8257 t
->set(PREFIX_OBJ
, o
->key
.c_str(), o
->key
.size(), bl
);
8258 o
->flushing_count
++;
8261 // objects we modified but didn't affect the onode
8262 auto p
= txc
->modified_objects
.begin();
8263 while (p
!= txc
->modified_objects
.end()) {
8264 if (txc
->onodes
.count(*p
) == 0) {
8265 (*p
)->flushing_count
++;
8268 // remove dups with onodes list to avoid problems in _txc_finish
8269 p
= txc
->modified_objects
.erase(p
);
8273 // finalize shared_blobs
8274 for (auto sb
: txc
->shared_blobs
) {
8276 auto sbid
= sb
->get_sbid();
8277 get_shared_blob_key(sbid
, &key
);
8278 if (sb
->persistent
->empty()) {
8279 dout(20) << " shared_blob 0x" << std::hex
<< sbid
<< std::dec
8280 << " is empty" << dendl
;
8281 t
->rmkey(PREFIX_SHARED_BLOB
, key
);
8284 ::encode(*(sb
->persistent
), bl
);
8285 dout(20) << " shared_blob 0x" << std::hex
<< sbid
<< std::dec
8286 << " is " << bl
.length() << " " << *sb
<< dendl
;
8287 t
->set(PREFIX_SHARED_BLOB
, key
, bl
);
8292 void BlueStore::BSPerfTracker::update_from_perfcounters(
8293 PerfCounters
&logger
)
8295 os_commit_latency
.consume_next(
8297 l_bluestore_commit_lat
));
8298 os_apply_latency
.consume_next(
8300 l_bluestore_commit_lat
));
8303 void BlueStore::_txc_finalize_kv(TransContext
*txc
, KeyValueDB::Transaction t
)
8305 dout(20) << __func__
<< " txc " << txc
<< std::hex
8306 << " allocated 0x" << txc
->allocated
8307 << " released 0x" << txc
->released
8308 << std::dec
<< dendl
;
8310 // We have to handle the case where we allocate *and* deallocate the
8311 // same region in this transaction. The freelist doesn't like that.
8312 // (Actually, the only thing that cares is the BitmapFreelistManager
8313 // debug check. But that's important.)
8314 interval_set
<uint64_t> tmp_allocated
, tmp_released
;
8315 interval_set
<uint64_t> *pallocated
= &txc
->allocated
;
8316 interval_set
<uint64_t> *preleased
= &txc
->released
;
8317 if (!txc
->allocated
.empty() && !txc
->released
.empty()) {
8318 interval_set
<uint64_t> overlap
;
8319 overlap
.intersection_of(txc
->allocated
, txc
->released
);
8320 if (!overlap
.empty()) {
8321 tmp_allocated
= txc
->allocated
;
8322 tmp_allocated
.subtract(overlap
);
8323 tmp_released
= txc
->released
;
8324 tmp_released
.subtract(overlap
);
8325 dout(20) << __func__
<< " overlap 0x" << std::hex
<< overlap
8326 << ", new allocated 0x" << tmp_allocated
8327 << " released 0x" << tmp_released
<< std::dec
8329 pallocated
= &tmp_allocated
;
8330 preleased
= &tmp_released
;
8334 // update freelist with non-overlap sets
8335 for (interval_set
<uint64_t>::iterator p
= pallocated
->begin();
8336 p
!= pallocated
->end();
8338 fm
->allocate(p
.get_start(), p
.get_len(), t
);
8340 for (interval_set
<uint64_t>::iterator p
= preleased
->begin();
8341 p
!= preleased
->end();
8343 dout(20) << __func__
<< " release 0x" << std::hex
<< p
.get_start()
8344 << "~" << p
.get_len() << std::dec
<< dendl
;
8345 fm
->release(p
.get_start(), p
.get_len(), t
);
8348 _txc_update_store_statfs(txc
);
8351 void BlueStore::_txc_applied_kv(TransContext
*txc
)
8353 for (auto ls
: { &txc
->onodes
, &txc
->modified_objects
}) {
8354 for (auto& o
: *ls
) {
8355 dout(20) << __func__
<< " onode " << o
<< " had " << o
->flushing_count
8357 if (--o
->flushing_count
== 0) {
8358 std::lock_guard
<std::mutex
> l(o
->flush_lock
);
8359 o
->flush_cond
.notify_all();
8365 void BlueStore::_txc_committed_kv(TransContext
*txc
)
8367 dout(20) << __func__
<< " txc " << txc
<< dendl
;
8369 // warning: we're calling onreadable_sync inside the sequencer lock
8370 if (txc
->onreadable_sync
) {
8371 txc
->onreadable_sync
->complete(0);
8372 txc
->onreadable_sync
= NULL
;
8374 unsigned n
= txc
->osr
->parent
->shard_hint
.hash_to_shard(m_finisher_num
);
8375 if (txc
->oncommit
) {
8376 logger
->tinc(l_bluestore_commit_lat
, ceph_clock_now() - txc
->start
);
8377 finishers
[n
]->queue(txc
->oncommit
);
8378 txc
->oncommit
= NULL
;
8380 if (txc
->onreadable
) {
8381 finishers
[n
]->queue(txc
->onreadable
);
8382 txc
->onreadable
= NULL
;
8386 std::lock_guard
<std::mutex
> l(txc
->osr
->qlock
);
8387 txc
->state
= TransContext::STATE_KV_DONE
;
8388 if (!txc
->oncommits
.empty()) {
8389 finishers
[n
]->queue(txc
->oncommits
);
8392 txc
->log_state_latency(logger
, l_bluestore_state_kv_committing_lat
);
8395 void BlueStore::_txc_finish(TransContext
*txc
)
8397 dout(20) << __func__
<< " " << txc
<< " onodes " << txc
->onodes
<< dendl
;
8398 assert(txc
->state
== TransContext::STATE_FINISHING
);
8400 for (auto& sb
: txc
->shared_blobs_written
) {
8401 sb
->bc
.finish_write(sb
->get_cache(), txc
->seq
);
8403 txc
->shared_blobs_written
.clear();
8405 while (!txc
->removed_collections
.empty()) {
8406 _queue_reap_collection(txc
->removed_collections
.front());
8407 txc
->removed_collections
.pop_front();
8410 OpSequencerRef osr
= txc
->osr
;
8412 bool submit_deferred
= false;
8413 OpSequencer::q_list_t releasing_txc
;
8415 std::lock_guard
<std::mutex
> l(osr
->qlock
);
8416 txc
->state
= TransContext::STATE_DONE
;
8417 bool notify
= false;
8418 while (!osr
->q
.empty()) {
8419 TransContext
*txc
= &osr
->q
.front();
8420 dout(20) << __func__
<< " txc " << txc
<< " " << txc
->get_state_name()
8422 if (txc
->state
!= TransContext::STATE_DONE
) {
8423 if (txc
->state
== TransContext::STATE_PREPARE
&&
8424 deferred_aggressive
) {
8425 // for _osr_drain_preceding()
8428 if (txc
->state
== TransContext::STATE_DEFERRED_QUEUED
&&
8429 osr
->q
.size() > g_conf
->bluestore_max_deferred_txc
) {
8430 submit_deferred
= true;
8436 releasing_txc
.push_back(*txc
);
8440 osr
->qcond
.notify_all();
8442 if (osr
->q
.empty()) {
8443 dout(20) << __func__
<< " osr " << osr
<< " q now empty" << dendl
;
8447 while (!releasing_txc
.empty()) {
8448 // release to allocator only after all preceding txc's have also
8449 // finished any deferred writes that potentially land in these
8451 auto txc
= &releasing_txc
.front();
8452 _txc_release_alloc(txc
);
8453 releasing_txc
.pop_front();
8454 txc
->log_state_latency(logger
, l_bluestore_state_done_lat
);
8458 if (submit_deferred
) {
8459 // we're pinning memory; flush! we could be more fine-grained here but
8460 // i'm not sure it's worth the bother.
8461 deferred_try_submit();
8464 if (empty
&& osr
->zombie
) {
8465 dout(10) << __func__
<< " reaping empty zombie osr " << osr
<< dendl
;
8470 void BlueStore::_txc_release_alloc(TransContext
*txc
)
8472 // update allocator with full released set
8473 if (!cct
->_conf
->bluestore_debug_no_reuse_blocks
) {
8474 dout(10) << __func__
<< " " << txc
<< " " << std::hex
8475 << txc
->released
<< std::dec
<< dendl
;
8476 for (interval_set
<uint64_t>::iterator p
= txc
->released
.begin();
8477 p
!= txc
->released
.end();
8479 alloc
->release(p
.get_start(), p
.get_len());
8483 txc
->allocated
.clear();
8484 txc
->released
.clear();
8487 void BlueStore::_osr_drain_preceding(TransContext
*txc
)
8489 OpSequencer
*osr
= txc
->osr
.get();
8490 dout(10) << __func__
<< " " << txc
<< " osr " << osr
<< dendl
;
8491 ++deferred_aggressive
; // FIXME: maybe osr-local aggressive flag?
8493 // submit anything pending
8494 deferred_lock
.lock();
8495 if (osr
->deferred_pending
) {
8496 _deferred_submit_unlock(osr
);
8498 deferred_lock
.unlock();
8502 // wake up any previously finished deferred events
8503 std::lock_guard
<std::mutex
> l(kv_lock
);
8504 kv_cond
.notify_one();
8506 osr
->drain_preceding(txc
);
8507 --deferred_aggressive
;
8508 dout(10) << __func__
<< " " << osr
<< " done" << dendl
;
8511 void BlueStore::_osr_drain_all()
8513 dout(10) << __func__
<< dendl
;
8515 set
<OpSequencerRef
> s
;
8517 std::lock_guard
<std::mutex
> l(osr_lock
);
8520 dout(20) << __func__
<< " osr_set " << s
<< dendl
;
8522 ++deferred_aggressive
;
8524 // submit anything pending
8525 deferred_try_submit();
8528 // wake up any previously finished deferred events
8529 std::lock_guard
<std::mutex
> l(kv_lock
);
8530 kv_cond
.notify_one();
8533 std::lock_guard
<std::mutex
> l(kv_finalize_lock
);
8534 kv_finalize_cond
.notify_one();
8536 for (auto osr
: s
) {
8537 dout(20) << __func__
<< " drain " << osr
<< dendl
;
8540 --deferred_aggressive
;
8542 dout(10) << __func__
<< " done" << dendl
;
8545 void BlueStore::_osr_unregister_all()
8547 set
<OpSequencerRef
> s
;
8549 std::lock_guard
<std::mutex
> l(osr_lock
);
8552 dout(10) << __func__
<< " " << s
<< dendl
;
8553 for (auto osr
: s
) {
8557 // break link from Sequencer to us so that this OpSequencer
8558 // instance can die with this mount/umount cycle. note that
8559 // we assume umount() will not race against ~Sequencer.
8560 assert(osr
->parent
);
8561 osr
->parent
->p
.reset();
8564 // nobody should be creating sequencers during umount either.
8566 std::lock_guard
<std::mutex
> l(osr_lock
);
8567 assert(osr_set
.empty());
8571 void BlueStore::_kv_start()
8573 dout(10) << __func__
<< dendl
;
8575 for (int i
= 0; i
< m_finisher_num
; ++i
) {
8577 oss
<< "finisher-" << i
;
8578 Finisher
*f
= new Finisher(cct
, oss
.str(), "finisher");
8579 finishers
.push_back(f
);
8582 deferred_finisher
.start();
8583 for (auto f
: finishers
) {
8586 kv_sync_thread
.create("bstore_kv_sync");
8587 kv_finalize_thread
.create("bstore_kv_final");
8590 void BlueStore::_kv_stop()
8592 dout(10) << __func__
<< dendl
;
8594 std::unique_lock
<std::mutex
> l(kv_lock
);
8595 while (!kv_sync_started
) {
8599 kv_cond
.notify_all();
8602 std::unique_lock
<std::mutex
> l(kv_finalize_lock
);
8603 while (!kv_finalize_started
) {
8604 kv_finalize_cond
.wait(l
);
8606 kv_finalize_stop
= true;
8607 kv_finalize_cond
.notify_all();
8609 kv_sync_thread
.join();
8610 kv_finalize_thread
.join();
8611 assert(removed_collections
.empty());
8613 std::lock_guard
<std::mutex
> l(kv_lock
);
8617 std::lock_guard
<std::mutex
> l(kv_finalize_lock
);
8618 kv_finalize_stop
= false;
8620 dout(10) << __func__
<< " stopping finishers" << dendl
;
8621 deferred_finisher
.wait_for_empty();
8622 deferred_finisher
.stop();
8623 for (auto f
: finishers
) {
8624 f
->wait_for_empty();
8627 dout(10) << __func__
<< " stopped" << dendl
;
8630 void BlueStore::_kv_sync_thread()
8632 dout(10) << __func__
<< " start" << dendl
;
8633 std::unique_lock
<std::mutex
> l(kv_lock
);
8634 assert(!kv_sync_started
);
8635 kv_sync_started
= true;
8636 kv_cond
.notify_all();
8638 assert(kv_committing
.empty());
8639 if (kv_queue
.empty() &&
8640 ((deferred_done_queue
.empty() && deferred_stable_queue
.empty()) ||
8641 !deferred_aggressive
)) {
8644 dout(20) << __func__
<< " sleep" << dendl
;
8646 dout(20) << __func__
<< " wake" << dendl
;
8648 deque
<TransContext
*> kv_submitting
;
8649 deque
<DeferredBatch
*> deferred_done
, deferred_stable
;
8650 uint64_t aios
= 0, costs
= 0;
8652 dout(20) << __func__
<< " committing " << kv_queue
.size()
8653 << " submitting " << kv_queue_unsubmitted
.size()
8654 << " deferred done " << deferred_done_queue
.size()
8655 << " stable " << deferred_stable_queue
.size()
8657 kv_committing
.swap(kv_queue
);
8658 kv_submitting
.swap(kv_queue_unsubmitted
);
8659 deferred_done
.swap(deferred_done_queue
);
8660 deferred_stable
.swap(deferred_stable_queue
);
8662 costs
= kv_throttle_costs
;
8664 kv_throttle_costs
= 0;
8665 utime_t start
= ceph_clock_now();
8668 dout(30) << __func__
<< " committing " << kv_committing
<< dendl
;
8669 dout(30) << __func__
<< " submitting " << kv_submitting
<< dendl
;
8670 dout(30) << __func__
<< " deferred_done " << deferred_done
<< dendl
;
8671 dout(30) << __func__
<< " deferred_stable " << deferred_stable
<< dendl
;
8673 bool force_flush
= false;
8674 // if bluefs is sharing the same device as data (only), then we
8675 // can rely on the bluefs commit to flush the device and make
8676 // deferred aios stable. that means that if we do have done deferred
8677 // txcs AND we are not on a single device, we need to force a flush.
8678 if (bluefs_single_shared_device
&& bluefs
) {
8681 } else if (kv_committing
.empty() && kv_submitting
.empty() &&
8682 deferred_stable
.empty()) {
8683 force_flush
= true; // there's nothing else to commit!
8684 } else if (deferred_aggressive
) {
8691 dout(20) << __func__
<< " num_aios=" << aios
8692 << " force_flush=" << (int)force_flush
8693 << ", flushing, deferred done->stable" << dendl
;
8694 // flush/barrier on block device
8697 // if we flush then deferred done are now deferred stable
8698 deferred_stable
.insert(deferred_stable
.end(), deferred_done
.begin(),
8699 deferred_done
.end());
8700 deferred_done
.clear();
8702 utime_t after_flush
= ceph_clock_now();
8704 // we will use one final transaction to force a sync
8705 KeyValueDB::Transaction synct
= db
->get_transaction();
8707 // increase {nid,blobid}_max? note that this covers both the
8708 // case where we are approaching the max and the case we passed
8709 // it. in either case, we increase the max in the earlier txn
8711 uint64_t new_nid_max
= 0, new_blobid_max
= 0;
8712 if (nid_last
+ cct
->_conf
->bluestore_nid_prealloc
/2 > nid_max
) {
8713 KeyValueDB::Transaction t
=
8714 kv_submitting
.empty() ? synct
: kv_submitting
.front()->t
;
8715 new_nid_max
= nid_last
+ cct
->_conf
->bluestore_nid_prealloc
;
8717 ::encode(new_nid_max
, bl
);
8718 t
->set(PREFIX_SUPER
, "nid_max", bl
);
8719 dout(10) << __func__
<< " new_nid_max " << new_nid_max
<< dendl
;
8721 if (blobid_last
+ cct
->_conf
->bluestore_blobid_prealloc
/2 > blobid_max
) {
8722 KeyValueDB::Transaction t
=
8723 kv_submitting
.empty() ? synct
: kv_submitting
.front()->t
;
8724 new_blobid_max
= blobid_last
+ cct
->_conf
->bluestore_blobid_prealloc
;
8726 ::encode(new_blobid_max
, bl
);
8727 t
->set(PREFIX_SUPER
, "blobid_max", bl
);
8728 dout(10) << __func__
<< " new_blobid_max " << new_blobid_max
<< dendl
;
8731 for (auto txc
: kv_committing
) {
8732 if (txc
->state
== TransContext::STATE_KV_QUEUED
) {
8733 txc
->log_state_latency(logger
, l_bluestore_state_kv_queued_lat
);
8734 int r
= cct
->_conf
->bluestore_debug_omit_kv_commit
? 0 : db
->submit_transaction(txc
->t
);
8736 _txc_applied_kv(txc
);
8737 --txc
->osr
->kv_committing_serially
;
8738 txc
->state
= TransContext::STATE_KV_SUBMITTED
;
8739 if (txc
->osr
->kv_submitted_waiters
) {
8740 std::lock_guard
<std::mutex
> l(txc
->osr
->qlock
);
8741 if (txc
->osr
->_is_all_kv_submitted()) {
8742 txc
->osr
->qcond
.notify_all();
8747 assert(txc
->state
== TransContext::STATE_KV_SUBMITTED
);
8748 txc
->log_state_latency(logger
, l_bluestore_state_kv_queued_lat
);
8751 --txc
->osr
->txc_with_unstable_io
;
8755 // release throttle *before* we commit. this allows new ops
8756 // to be prepared and enter pipeline while we are waiting on
8757 // the kv commit sync/flush. then hopefully on the next
8758 // iteration there will already be ops awake. otherwise, we
8759 // end up going to sleep, and then wake up when the very first
8760 // transaction is ready for commit.
8761 throttle_bytes
.put(costs
);
8763 PExtentVector bluefs_gift_extents
;
8765 after_flush
- bluefs_last_balance
>
8766 cct
->_conf
->bluestore_bluefs_balance_interval
) {
8767 bluefs_last_balance
= after_flush
;
8768 int r
= _balance_bluefs_freespace(&bluefs_gift_extents
);
8771 for (auto& p
: bluefs_gift_extents
) {
8772 bluefs_extents
.insert(p
.offset
, p
.length
);
8775 ::encode(bluefs_extents
, bl
);
8776 dout(10) << __func__
<< " bluefs_extents now 0x" << std::hex
8777 << bluefs_extents
<< std::dec
<< dendl
;
8778 synct
->set(PREFIX_SUPER
, "bluefs_extents", bl
);
8782 // cleanup sync deferred keys
8783 for (auto b
: deferred_stable
) {
8784 for (auto& txc
: b
->txcs
) {
8785 bluestore_deferred_transaction_t
& wt
= *txc
.deferred_txn
;
8786 if (!wt
.released
.empty()) {
8787 // kraken replay compat only
8788 txc
.released
= wt
.released
;
8789 dout(10) << __func__
<< " deferred txn has released "
8791 << " (we just upgraded from kraken) on " << &txc
<< dendl
;
8792 _txc_finalize_kv(&txc
, synct
);
8794 // cleanup the deferred
8796 get_deferred_key(wt
.seq
, &key
);
8797 synct
->rm_single_key(PREFIX_DEFERRED
, key
);
8801 // submit synct synchronously (block and wait for it to commit)
8802 int r
= cct
->_conf
->bluestore_debug_omit_kv_commit
? 0 : db
->submit_transaction_sync(synct
);
8806 nid_max
= new_nid_max
;
8807 dout(10) << __func__
<< " nid_max now " << nid_max
<< dendl
;
8809 if (new_blobid_max
) {
8810 blobid_max
= new_blobid_max
;
8811 dout(10) << __func__
<< " blobid_max now " << blobid_max
<< dendl
;
8815 utime_t finish
= ceph_clock_now();
8816 utime_t dur_flush
= after_flush
- start
;
8817 utime_t dur_kv
= finish
- after_flush
;
8818 utime_t dur
= finish
- start
;
8819 dout(20) << __func__
<< " committed " << kv_committing
.size()
8820 << " cleaned " << deferred_stable
.size()
8822 << " (" << dur_flush
<< " flush + " << dur_kv
<< " kv commit)"
8824 logger
->tinc(l_bluestore_kv_flush_lat
, dur_flush
);
8825 logger
->tinc(l_bluestore_kv_commit_lat
, dur_kv
);
8826 logger
->tinc(l_bluestore_kv_lat
, dur
);
8830 if (!bluefs_gift_extents
.empty()) {
8831 _commit_bluefs_freespace(bluefs_gift_extents
);
8833 for (auto p
= bluefs_extents_reclaiming
.begin();
8834 p
!= bluefs_extents_reclaiming
.end();
8836 dout(20) << __func__
<< " releasing old bluefs 0x" << std::hex
8837 << p
.get_start() << "~" << p
.get_len() << std::dec
8839 alloc
->release(p
.get_start(), p
.get_len());
8841 bluefs_extents_reclaiming
.clear();
8845 std::unique_lock
<std::mutex
> m(kv_finalize_lock
);
8846 if (kv_committing_to_finalize
.empty()) {
8847 kv_committing_to_finalize
.swap(kv_committing
);
8849 kv_committing_to_finalize
.insert(
8850 kv_committing_to_finalize
.end(),
8851 kv_committing
.begin(),
8852 kv_committing
.end());
8853 kv_committing
.clear();
8855 if (deferred_stable_to_finalize
.empty()) {
8856 deferred_stable_to_finalize
.swap(deferred_stable
);
8858 deferred_stable_to_finalize
.insert(
8859 deferred_stable_to_finalize
.end(),
8860 deferred_stable
.begin(),
8861 deferred_stable
.end());
8862 deferred_stable
.clear();
8864 kv_finalize_cond
.notify_one();
8868 // previously deferred "done" are now "stable" by virtue of this
8870 deferred_stable_queue
.swap(deferred_done
);
8873 dout(10) << __func__
<< " finish" << dendl
;
8874 kv_sync_started
= false;
8877 void BlueStore::_kv_finalize_thread()
8879 deque
<TransContext
*> kv_committed
;
8880 deque
<DeferredBatch
*> deferred_stable
;
8881 dout(10) << __func__
<< " start" << dendl
;
8882 std::unique_lock
<std::mutex
> l(kv_finalize_lock
);
8883 assert(!kv_finalize_started
);
8884 kv_finalize_started
= true;
8885 kv_finalize_cond
.notify_all();
8887 assert(kv_committed
.empty());
8888 assert(deferred_stable
.empty());
8889 if (kv_committing_to_finalize
.empty() &&
8890 deferred_stable_to_finalize
.empty()) {
8891 if (kv_finalize_stop
)
8893 dout(20) << __func__
<< " sleep" << dendl
;
8894 kv_finalize_cond
.wait(l
);
8895 dout(20) << __func__
<< " wake" << dendl
;
8897 kv_committed
.swap(kv_committing_to_finalize
);
8898 deferred_stable
.swap(deferred_stable_to_finalize
);
8900 dout(20) << __func__
<< " kv_committed " << kv_committed
<< dendl
;
8901 dout(20) << __func__
<< " deferred_stable " << deferred_stable
<< dendl
;
8903 while (!kv_committed
.empty()) {
8904 TransContext
*txc
= kv_committed
.front();
8905 assert(txc
->state
== TransContext::STATE_KV_SUBMITTED
);
8906 _txc_state_proc(txc
);
8907 kv_committed
.pop_front();
8910 for (auto b
: deferred_stable
) {
8911 auto p
= b
->txcs
.begin();
8912 while (p
!= b
->txcs
.end()) {
8913 TransContext
*txc
= &*p
;
8914 p
= b
->txcs
.erase(p
); // unlink here because
8915 _txc_state_proc(txc
); // this may destroy txc
8919 deferred_stable
.clear();
8921 if (!deferred_aggressive
) {
8922 if (deferred_queue_size
>= deferred_batch_ops
.load() ||
8923 throttle_deferred_bytes
.past_midpoint()) {
8924 deferred_try_submit();
8928 // this is as good a place as any ...
8929 _reap_collections();
8934 dout(10) << __func__
<< " finish" << dendl
;
8935 kv_finalize_started
= false;
8938 bluestore_deferred_op_t
*BlueStore::_get_deferred_op(
8939 TransContext
*txc
, OnodeRef o
)
8941 if (!txc
->deferred_txn
) {
8942 txc
->deferred_txn
= new bluestore_deferred_transaction_t
;
8944 txc
->deferred_txn
->ops
.push_back(bluestore_deferred_op_t());
8945 return &txc
->deferred_txn
->ops
.back();
8948 void BlueStore::_deferred_queue(TransContext
*txc
)
8950 dout(20) << __func__
<< " txc " << txc
<< " osr " << txc
->osr
<< dendl
;
8951 deferred_lock
.lock();
8952 if (!txc
->osr
->deferred_pending
&&
8953 !txc
->osr
->deferred_running
) {
8954 deferred_queue
.push_back(*txc
->osr
);
8956 if (!txc
->osr
->deferred_pending
) {
8957 txc
->osr
->deferred_pending
= new DeferredBatch(cct
, txc
->osr
.get());
8959 ++deferred_queue_size
;
8960 txc
->osr
->deferred_pending
->txcs
.push_back(*txc
);
8961 bluestore_deferred_transaction_t
& wt
= *txc
->deferred_txn
;
8962 for (auto opi
= wt
.ops
.begin(); opi
!= wt
.ops
.end(); ++opi
) {
8963 const auto& op
= *opi
;
8964 assert(op
.op
== bluestore_deferred_op_t::OP_WRITE
);
8965 bufferlist::const_iterator p
= op
.data
.begin();
8966 for (auto e
: op
.extents
) {
8967 txc
->osr
->deferred_pending
->prepare_write(
8968 cct
, wt
.seq
, e
.offset
, e
.length
, p
);
8971 if (deferred_aggressive
&&
8972 !txc
->osr
->deferred_running
) {
8973 _deferred_submit_unlock(txc
->osr
.get());
8975 deferred_lock
.unlock();
8979 void BlueStore::deferred_try_submit()
8981 dout(20) << __func__
<< " " << deferred_queue
.size() << " osrs, "
8982 << deferred_queue_size
<< " txcs" << dendl
;
8983 std::lock_guard
<std::mutex
> l(deferred_lock
);
8984 vector
<OpSequencerRef
> osrs
;
8985 osrs
.reserve(deferred_queue
.size());
8986 for (auto& osr
: deferred_queue
) {
8987 osrs
.push_back(&osr
);
8989 for (auto& osr
: osrs
) {
8990 if (osr
->deferred_pending
) {
8991 if (!osr
->deferred_running
) {
8992 _deferred_submit_unlock(osr
.get());
8993 deferred_lock
.lock();
8995 dout(20) << __func__
<< " osr " << osr
<< " already has running"
8999 dout(20) << __func__
<< " osr " << osr
<< " has no pending" << dendl
;
9004 void BlueStore::_deferred_submit_unlock(OpSequencer
*osr
)
9006 dout(10) << __func__
<< " osr " << osr
9007 << " " << osr
->deferred_pending
->iomap
.size() << " ios pending "
9009 assert(osr
->deferred_pending
);
9010 assert(!osr
->deferred_running
);
9012 auto b
= osr
->deferred_pending
;
9013 deferred_queue_size
-= b
->seq_bytes
.size();
9014 assert(deferred_queue_size
>= 0);
9016 osr
->deferred_running
= osr
->deferred_pending
;
9017 osr
->deferred_pending
= nullptr;
9019 uint64_t start
= 0, pos
= 0;
9021 auto i
= b
->iomap
.begin();
9023 if (i
== b
->iomap
.end() || i
->first
!= pos
) {
9025 dout(20) << __func__
<< " write 0x" << std::hex
9026 << start
<< "~" << bl
.length()
9027 << " crc " << bl
.crc32c(-1) << std::dec
<< dendl
;
9028 if (!g_conf
->bluestore_debug_omit_block_device_write
) {
9029 logger
->inc(l_bluestore_deferred_write_ops
);
9030 logger
->inc(l_bluestore_deferred_write_bytes
, bl
.length());
9031 int r
= bdev
->aio_write(start
, bl
, &b
->ioc
, false);
9035 if (i
== b
->iomap
.end()) {
9042 dout(20) << __func__
<< " seq " << i
->second
.seq
<< " 0x"
9043 << std::hex
<< pos
<< "~" << i
->second
.bl
.length() << std::dec
9048 pos
+= i
->second
.bl
.length();
9049 bl
.claim_append(i
->second
.bl
);
9053 deferred_lock
.unlock();
9054 bdev
->aio_submit(&b
->ioc
);
9057 struct C_DeferredTrySubmit
: public Context
{
9059 C_DeferredTrySubmit(BlueStore
*s
) : store(s
) {}
9060 void finish(int r
) {
9061 store
->deferred_try_submit();
9065 void BlueStore::_deferred_aio_finish(OpSequencer
*osr
)
9067 dout(10) << __func__
<< " osr " << osr
<< dendl
;
9068 assert(osr
->deferred_running
);
9069 DeferredBatch
*b
= osr
->deferred_running
;
9072 std::lock_guard
<std::mutex
> l(deferred_lock
);
9073 assert(osr
->deferred_running
== b
);
9074 osr
->deferred_running
= nullptr;
9075 if (!osr
->deferred_pending
) {
9076 dout(20) << __func__
<< " dequeueing" << dendl
;
9077 auto q
= deferred_queue
.iterator_to(*osr
);
9078 deferred_queue
.erase(q
);
9079 } else if (deferred_aggressive
) {
9080 dout(20) << __func__
<< " queuing async deferred_try_submit" << dendl
;
9081 deferred_finisher
.queue(new C_DeferredTrySubmit(this));
9083 dout(20) << __func__
<< " leaving queued, more pending" << dendl
;
9089 std::lock_guard
<std::mutex
> l2(osr
->qlock
);
9090 for (auto& i
: b
->txcs
) {
9091 TransContext
*txc
= &i
;
9092 txc
->state
= TransContext::STATE_DEFERRED_CLEANUP
;
9095 osr
->qcond
.notify_all();
9096 throttle_deferred_bytes
.put(costs
);
9097 std::lock_guard
<std::mutex
> l(kv_lock
);
9098 deferred_done_queue
.emplace_back(b
);
9101 // in the normal case, do not bother waking up the kv thread; it will
9102 // catch us on the next commit anyway.
9103 if (deferred_aggressive
) {
9104 std::lock_guard
<std::mutex
> l(kv_lock
);
9105 kv_cond
.notify_one();
9109 int BlueStore::_deferred_replay()
9111 dout(10) << __func__
<< " start" << dendl
;
9112 OpSequencerRef osr
= new OpSequencer(cct
, this);
9115 KeyValueDB::Iterator it
= db
->get_iterator(PREFIX_DEFERRED
);
9116 for (it
->lower_bound(string()); it
->valid(); it
->next(), ++count
) {
9117 dout(20) << __func__
<< " replay " << pretty_binary_string(it
->key())
9119 bluestore_deferred_transaction_t
*deferred_txn
=
9120 new bluestore_deferred_transaction_t
;
9121 bufferlist bl
= it
->value();
9122 bufferlist::iterator p
= bl
.begin();
9124 ::decode(*deferred_txn
, p
);
9125 } catch (buffer::error
& e
) {
9126 derr
<< __func__
<< " failed to decode deferred txn "
9127 << pretty_binary_string(it
->key()) << dendl
;
9128 delete deferred_txn
;
9132 TransContext
*txc
= _txc_create(osr
.get());
9133 txc
->deferred_txn
= deferred_txn
;
9134 txc
->state
= TransContext::STATE_KV_DONE
;
9135 _txc_state_proc(txc
);
9138 dout(20) << __func__
<< " draining osr" << dendl
;
9141 dout(10) << __func__
<< " completed " << count
<< " events" << dendl
;
9145 // ---------------------------
9148 int BlueStore::queue_transactions(
9150 vector
<Transaction
>& tls
,
9152 ThreadPool::TPHandle
*handle
)
9155 Context
*onreadable
;
9157 Context
*onreadable_sync
;
9158 ObjectStore::Transaction::collect_contexts(
9159 tls
, &onreadable
, &ondisk
, &onreadable_sync
);
9161 if (cct
->_conf
->objectstore_blackhole
) {
9162 dout(0) << __func__
<< " objectstore_blackhole = TRUE, dropping transaction"
9166 delete onreadable_sync
;
9169 utime_t start
= ceph_clock_now();
9170 // set up the sequencer
9174 osr
= static_cast<OpSequencer
*>(posr
->p
.get());
9175 dout(10) << __func__
<< " existing " << osr
<< " " << *osr
<< dendl
;
9177 osr
= new OpSequencer(cct
, this);
9180 dout(10) << __func__
<< " new " << osr
<< " " << *osr
<< dendl
;
9184 TransContext
*txc
= _txc_create(osr
);
9185 txc
->onreadable
= onreadable
;
9186 txc
->onreadable_sync
= onreadable_sync
;
9187 txc
->oncommit
= ondisk
;
9189 for (vector
<Transaction
>::iterator p
= tls
.begin(); p
!= tls
.end(); ++p
) {
9191 txc
->bytes
+= (*p
).get_num_bytes();
9192 _txc_add_transaction(txc
, &(*p
));
9194 _txc_calc_cost(txc
);
9196 _txc_write_nodes(txc
, txc
->t
);
9198 // journal deferred items
9199 if (txc
->deferred_txn
) {
9200 txc
->deferred_txn
->seq
= ++deferred_seq
;
9202 ::encode(*txc
->deferred_txn
, bl
);
9204 get_deferred_key(txc
->deferred_txn
->seq
, &key
);
9205 txc
->t
->set(PREFIX_DEFERRED
, key
, bl
);
9208 _txc_finalize_kv(txc
, txc
->t
);
9210 handle
->suspend_tp_timeout();
9212 utime_t tstart
= ceph_clock_now();
9213 throttle_bytes
.get(txc
->cost
);
9214 if (txc
->deferred_txn
) {
9215 // ensure we do not block here because of deferred writes
9216 if (!throttle_deferred_bytes
.get_or_fail(txc
->cost
)) {
9217 dout(10) << __func__
<< " failed get throttle_deferred_bytes, aggressive"
9219 ++deferred_aggressive
;
9220 deferred_try_submit();
9222 // wake up any previously finished deferred events
9223 std::lock_guard
<std::mutex
> l(kv_lock
);
9224 kv_cond
.notify_one();
9226 throttle_deferred_bytes
.get(txc
->cost
);
9227 --deferred_aggressive
;
9230 utime_t tend
= ceph_clock_now();
9233 handle
->reset_tp_timeout();
9235 logger
->inc(l_bluestore_txc
);
9238 _txc_state_proc(txc
);
9240 logger
->tinc(l_bluestore_submit_lat
, ceph_clock_now() - start
);
9241 logger
->tinc(l_bluestore_throttle_lat
, tend
- tstart
);
9245 void BlueStore::_txc_aio_submit(TransContext
*txc
)
9247 dout(10) << __func__
<< " txc " << txc
<< dendl
;
9248 bdev
->aio_submit(&txc
->ioc
);
9251 void BlueStore::_txc_add_transaction(TransContext
*txc
, Transaction
*t
)
9253 Transaction::iterator i
= t
->begin();
9255 _dump_transaction(t
);
9257 vector
<CollectionRef
> cvec(i
.colls
.size());
9259 for (vector
<coll_t
>::iterator p
= i
.colls
.begin(); p
!= i
.colls
.end();
9261 cvec
[j
] = _get_collection(*p
);
9263 vector
<OnodeRef
> ovec(i
.objects
.size());
9265 for (int pos
= 0; i
.have_op(); ++pos
) {
9266 Transaction::Op
*op
= i
.decode_op();
9270 if (op
->op
== Transaction::OP_NOP
)
9273 // collection operations
9274 CollectionRef
&c
= cvec
[op
->cid
];
9276 case Transaction::OP_RMCOLL
:
9278 const coll_t
&cid
= i
.get_cid(op
->cid
);
9279 r
= _remove_collection(txc
, cid
, &c
);
9285 case Transaction::OP_MKCOLL
:
9288 const coll_t
&cid
= i
.get_cid(op
->cid
);
9289 r
= _create_collection(txc
, cid
, op
->split_bits
, &c
);
9295 case Transaction::OP_SPLIT_COLLECTION
:
9296 assert(0 == "deprecated");
9299 case Transaction::OP_SPLIT_COLLECTION2
:
9301 uint32_t bits
= op
->split_bits
;
9302 uint32_t rem
= op
->split_rem
;
9303 r
= _split_collection(txc
, c
, cvec
[op
->dest_cid
], bits
, rem
);
9309 case Transaction::OP_COLL_HINT
:
9311 uint32_t type
= op
->hint_type
;
9314 bufferlist::iterator hiter
= hint
.begin();
9315 if (type
== Transaction::COLL_HINT_EXPECTED_NUM_OBJECTS
) {
9318 ::decode(pg_num
, hiter
);
9319 ::decode(num_objs
, hiter
);
9320 dout(10) << __func__
<< " collection hint objects is a no-op, "
9321 << " pg_num " << pg_num
<< " num_objects " << num_objs
9325 dout(10) << __func__
<< " unknown collection hint " << type
<< dendl
;
9331 case Transaction::OP_COLL_SETATTR
:
9335 case Transaction::OP_COLL_RMATTR
:
9339 case Transaction::OP_COLL_RENAME
:
9340 assert(0 == "not implemented");
9344 derr
<< __func__
<< " error " << cpp_strerror(r
)
9345 << " not handled on operation " << op
->op
9346 << " (op " << pos
<< ", counting from 0)" << dendl
;
9347 _dump_transaction(t
, 0);
9348 assert(0 == "unexpected error");
9351 // these operations implicity create the object
9352 bool create
= false;
9353 if (op
->op
== Transaction::OP_TOUCH
||
9354 op
->op
== Transaction::OP_WRITE
||
9355 op
->op
== Transaction::OP_ZERO
) {
9359 // object operations
9360 RWLock::WLocker
l(c
->lock
);
9361 OnodeRef
&o
= ovec
[op
->oid
];
9363 ghobject_t oid
= i
.get_oid(op
->oid
);
9364 o
= c
->get_onode(oid
, create
);
9366 if (!create
&& (!o
|| !o
->exists
)) {
9367 dout(10) << __func__
<< " op " << op
->op
<< " got ENOENT on "
9368 << i
.get_oid(op
->oid
) << dendl
;
9374 case Transaction::OP_TOUCH
:
9375 r
= _touch(txc
, c
, o
);
9378 case Transaction::OP_WRITE
:
9380 uint64_t off
= op
->off
;
9381 uint64_t len
= op
->len
;
9382 uint32_t fadvise_flags
= i
.get_fadvise_flags();
9385 r
= _write(txc
, c
, o
, off
, len
, bl
, fadvise_flags
);
9389 case Transaction::OP_ZERO
:
9391 uint64_t off
= op
->off
;
9392 uint64_t len
= op
->len
;
9393 r
= _zero(txc
, c
, o
, off
, len
);
9397 case Transaction::OP_TRIMCACHE
:
9399 // deprecated, no-op
9403 case Transaction::OP_TRUNCATE
:
9405 uint64_t off
= op
->off
;
9406 r
= _truncate(txc
, c
, o
, off
);
9410 case Transaction::OP_REMOVE
:
9412 r
= _remove(txc
, c
, o
);
9416 case Transaction::OP_SETATTR
:
9418 string name
= i
.decode_string();
9421 r
= _setattr(txc
, c
, o
, name
, bp
);
9425 case Transaction::OP_SETATTRS
:
9427 map
<string
, bufferptr
> aset
;
9428 i
.decode_attrset(aset
);
9429 r
= _setattrs(txc
, c
, o
, aset
);
9433 case Transaction::OP_RMATTR
:
9435 string name
= i
.decode_string();
9436 r
= _rmattr(txc
, c
, o
, name
);
9440 case Transaction::OP_RMATTRS
:
9442 r
= _rmattrs(txc
, c
, o
);
9446 case Transaction::OP_CLONE
:
9448 OnodeRef
& no
= ovec
[op
->dest_oid
];
9450 const ghobject_t
& noid
= i
.get_oid(op
->dest_oid
);
9451 no
= c
->get_onode(noid
, true);
9453 r
= _clone(txc
, c
, o
, no
);
9457 case Transaction::OP_CLONERANGE
:
9458 assert(0 == "deprecated");
9461 case Transaction::OP_CLONERANGE2
:
9463 OnodeRef
& no
= ovec
[op
->dest_oid
];
9465 const ghobject_t
& noid
= i
.get_oid(op
->dest_oid
);
9466 no
= c
->get_onode(noid
, true);
9468 uint64_t srcoff
= op
->off
;
9469 uint64_t len
= op
->len
;
9470 uint64_t dstoff
= op
->dest_off
;
9471 r
= _clone_range(txc
, c
, o
, no
, srcoff
, len
, dstoff
);
9475 case Transaction::OP_COLL_ADD
:
9476 assert(0 == "not implemented");
9479 case Transaction::OP_COLL_REMOVE
:
9480 assert(0 == "not implemented");
9483 case Transaction::OP_COLL_MOVE
:
9484 assert(0 == "deprecated");
9487 case Transaction::OP_COLL_MOVE_RENAME
:
9488 case Transaction::OP_TRY_RENAME
:
9490 assert(op
->cid
== op
->dest_cid
);
9491 const ghobject_t
& noid
= i
.get_oid(op
->dest_oid
);
9492 OnodeRef
& no
= ovec
[op
->dest_oid
];
9494 no
= c
->get_onode(noid
, false);
9496 r
= _rename(txc
, c
, o
, no
, noid
);
9500 case Transaction::OP_OMAP_CLEAR
:
9502 r
= _omap_clear(txc
, c
, o
);
9505 case Transaction::OP_OMAP_SETKEYS
:
9508 i
.decode_attrset_bl(&aset_bl
);
9509 r
= _omap_setkeys(txc
, c
, o
, aset_bl
);
9512 case Transaction::OP_OMAP_RMKEYS
:
9515 i
.decode_keyset_bl(&keys_bl
);
9516 r
= _omap_rmkeys(txc
, c
, o
, keys_bl
);
9519 case Transaction::OP_OMAP_RMKEYRANGE
:
9522 first
= i
.decode_string();
9523 last
= i
.decode_string();
9524 r
= _omap_rmkey_range(txc
, c
, o
, first
, last
);
9527 case Transaction::OP_OMAP_SETHEADER
:
9531 r
= _omap_setheader(txc
, c
, o
, bl
);
9535 case Transaction::OP_SETALLOCHINT
:
9537 r
= _set_alloc_hint(txc
, c
, o
,
9538 op
->expected_object_size
,
9539 op
->expected_write_size
,
9540 op
->alloc_hint_flags
);
9545 derr
<< __func__
<< "bad op " << op
->op
<< dendl
;
9553 if (r
== -ENOENT
&& !(op
->op
== Transaction::OP_CLONERANGE
||
9554 op
->op
== Transaction::OP_CLONE
||
9555 op
->op
== Transaction::OP_CLONERANGE2
||
9556 op
->op
== Transaction::OP_COLL_ADD
||
9557 op
->op
== Transaction::OP_SETATTR
||
9558 op
->op
== Transaction::OP_SETATTRS
||
9559 op
->op
== Transaction::OP_RMATTR
||
9560 op
->op
== Transaction::OP_OMAP_SETKEYS
||
9561 op
->op
== Transaction::OP_OMAP_RMKEYS
||
9562 op
->op
== Transaction::OP_OMAP_RMKEYRANGE
||
9563 op
->op
== Transaction::OP_OMAP_SETHEADER
))
9564 // -ENOENT is usually okay
9570 const char *msg
= "unexpected error code";
9572 if (r
== -ENOENT
&& (op
->op
== Transaction::OP_CLONERANGE
||
9573 op
->op
== Transaction::OP_CLONE
||
9574 op
->op
== Transaction::OP_CLONERANGE2
))
9575 msg
= "ENOENT on clone suggests osd bug";
9578 // For now, if we hit _any_ ENOSPC, crash, before we do any damage
9579 // by partially applying transactions.
9580 msg
= "ENOSPC from bluestore, misconfigured cluster";
9582 if (r
== -ENOTEMPTY
) {
9583 msg
= "ENOTEMPTY suggests garbage data in osd data dir";
9586 derr
<< __func__
<< " error " << cpp_strerror(r
)
9587 << " not handled on operation " << op
->op
9588 << " (op " << pos
<< ", counting from 0)"
9590 derr
<< msg
<< dendl
;
9591 _dump_transaction(t
, 0);
9592 assert(0 == "unexpected error");
9600 // -----------------
9603 int BlueStore::_touch(TransContext
*txc
,
9607 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< dendl
;
9609 _assign_nid(txc
, o
);
9610 txc
->write_onode(o
);
9611 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< " = " << r
<< dendl
;
9615 void BlueStore::_dump_onode(const OnodeRef
& o
, int log_level
)
9617 if (!cct
->_conf
->subsys
.should_gather(ceph_subsys_bluestore
, log_level
))
9619 dout(log_level
) << __func__
<< " " << o
<< " " << o
->oid
9620 << " nid " << o
->onode
.nid
9621 << " size 0x" << std::hex
<< o
->onode
.size
9622 << " (" << std::dec
<< o
->onode
.size
<< ")"
9623 << " expected_object_size " << o
->onode
.expected_object_size
9624 << " expected_write_size " << o
->onode
.expected_write_size
9625 << " in " << o
->onode
.extent_map_shards
.size() << " shards"
9626 << ", " << o
->extent_map
.spanning_blob_map
.size()
9627 << " spanning blobs"
9629 for (auto p
= o
->onode
.attrs
.begin();
9630 p
!= o
->onode
.attrs
.end();
9632 dout(log_level
) << __func__
<< " attr " << p
->first
9633 << " len " << p
->second
.length() << dendl
;
9635 _dump_extent_map(o
->extent_map
, log_level
);
9638 void BlueStore::_dump_extent_map(ExtentMap
&em
, int log_level
)
9641 for (auto& s
: em
.shards
) {
9642 dout(log_level
) << __func__
<< " shard " << *s
.shard_info
9643 << (s
.loaded
? " (loaded)" : "")
9644 << (s
.dirty
? " (dirty)" : "")
9647 for (auto& e
: em
.extent_map
) {
9648 dout(log_level
) << __func__
<< " " << e
<< dendl
;
9649 assert(e
.logical_offset
>= pos
);
9650 pos
= e
.logical_offset
+ e
.length
;
9651 const bluestore_blob_t
& blob
= e
.blob
->get_blob();
9652 if (blob
.has_csum()) {
9654 unsigned n
= blob
.get_csum_count();
9655 for (unsigned i
= 0; i
< n
; ++i
)
9656 v
.push_back(blob
.get_csum_item(i
));
9657 dout(log_level
) << __func__
<< " csum: " << std::hex
<< v
<< std::dec
9660 std::lock_guard
<std::recursive_mutex
> l(e
.blob
->shared_blob
->get_cache()->lock
);
9661 for (auto& i
: e
.blob
->shared_blob
->bc
.buffer_map
) {
9662 dout(log_level
) << __func__
<< " 0x" << std::hex
<< i
.first
9663 << "~" << i
.second
->length
<< std::dec
9664 << " " << *i
.second
<< dendl
;
9669 void BlueStore::_dump_transaction(Transaction
*t
, int log_level
)
9671 dout(log_level
) << " transaction dump:\n";
9672 JSONFormatter
f(true);
9673 f
.open_object_section("transaction");
9680 void BlueStore::_pad_zeros(
9681 bufferlist
*bl
, uint64_t *offset
,
9682 uint64_t chunk_size
)
9684 auto length
= bl
->length();
9685 dout(30) << __func__
<< " 0x" << std::hex
<< *offset
<< "~" << length
9686 << " chunk_size 0x" << chunk_size
<< std::dec
<< dendl
;
9687 dout(40) << "before:\n";
9688 bl
->hexdump(*_dout
);
9691 size_t front_pad
= *offset
% chunk_size
;
9692 size_t back_pad
= 0;
9693 size_t pad_count
= 0;
9695 size_t front_copy
= MIN(chunk_size
- front_pad
, length
);
9696 bufferptr z
= buffer::create_page_aligned(chunk_size
);
9697 z
.zero(0, front_pad
, false);
9698 pad_count
+= front_pad
;
9699 bl
->copy(0, front_copy
, z
.c_str() + front_pad
);
9700 if (front_copy
+ front_pad
< chunk_size
) {
9701 back_pad
= chunk_size
- (length
+ front_pad
);
9702 z
.zero(front_pad
+ length
, back_pad
, false);
9703 pad_count
+= back_pad
;
9707 t
.substr_of(old
, front_copy
, length
- front_copy
);
9709 bl
->claim_append(t
);
9710 *offset
-= front_pad
;
9711 length
+= pad_count
;
9715 uint64_t end
= *offset
+ length
;
9716 unsigned back_copy
= end
% chunk_size
;
9718 assert(back_pad
== 0);
9719 back_pad
= chunk_size
- back_copy
;
9720 assert(back_copy
<= length
);
9721 bufferptr
tail(chunk_size
);
9722 bl
->copy(length
- back_copy
, back_copy
, tail
.c_str());
9723 tail
.zero(back_copy
, back_pad
, false);
9726 bl
->substr_of(old
, 0, length
- back_copy
);
9729 pad_count
+= back_pad
;
9731 dout(20) << __func__
<< " pad 0x" << std::hex
<< front_pad
<< " + 0x"
9732 << back_pad
<< " on front/back, now 0x" << *offset
<< "~"
9733 << length
<< std::dec
<< dendl
;
9734 dout(40) << "after:\n";
9735 bl
->hexdump(*_dout
);
9738 logger
->inc(l_bluestore_write_pad_bytes
, pad_count
);
9739 assert(bl
->length() == length
);
9742 void BlueStore::_do_write_small(
9746 uint64_t offset
, uint64_t length
,
9747 bufferlist::iterator
& blp
,
9750 dout(10) << __func__
<< " 0x" << std::hex
<< offset
<< "~" << length
9751 << std::dec
<< dendl
;
9752 assert(length
< min_alloc_size
);
9753 uint64_t end_offs
= offset
+ length
;
9755 logger
->inc(l_bluestore_write_small
);
9756 logger
->inc(l_bluestore_write_small_bytes
, length
);
9759 blp
.copy(length
, bl
);
9761 // Look for an existing mutable blob we can use.
9762 auto begin
= o
->extent_map
.extent_map
.begin();
9763 auto end
= o
->extent_map
.extent_map
.end();
9764 auto ep
= o
->extent_map
.seek_lextent(offset
);
9767 if (ep
->blob_end() <= offset
) {
9772 if (prev_ep
!= begin
) {
9775 prev_ep
= end
; // to avoid this extent check as it's a duplicate
9778 auto max_bsize
= MAX(wctx
->target_blob_size
, min_alloc_size
);
9779 auto min_off
= offset
>= max_bsize
? offset
- max_bsize
: 0;
9780 uint32_t alloc_len
= min_alloc_size
;
9781 auto offset0
= P2ALIGN(offset
, alloc_len
);
9785 // search suitable extent in both forward and reverse direction in
9786 // [offset - target_max_blob_size, offset + target_max_blob_size] range
9787 // then check if blob can be reused via can_reuse_blob func or apply
9788 // direct/deferred write (the latter for extents including or higher
9789 // than 'offset' only).
9793 if (ep
!= end
&& ep
->logical_offset
< offset
+ max_bsize
) {
9794 BlobRef b
= ep
->blob
;
9795 auto bstart
= ep
->blob_start();
9796 dout(20) << __func__
<< " considering " << *b
9797 << " bstart 0x" << std::hex
<< bstart
<< std::dec
<< dendl
;
9798 if (bstart
>= end_offs
) {
9799 dout(20) << __func__
<< " ignoring distant " << *b
<< dendl
;
9800 } else if (!b
->get_blob().is_mutable()) {
9801 dout(20) << __func__
<< " ignoring immutable " << *b
<< dendl
;
9802 } else if (ep
->logical_offset
% min_alloc_size
!=
9803 ep
->blob_offset
% min_alloc_size
) {
9804 dout(20) << __func__
<< " ignoring offset-skewed " << *b
<< dendl
;
9806 uint64_t chunk_size
= b
->get_blob().get_chunk_size(block_size
);
9807 // can we pad our head/tail out with zeros?
9808 uint64_t head_pad
, tail_pad
;
9809 head_pad
= P2PHASE(offset
, chunk_size
);
9810 tail_pad
= P2NPHASE(end_offs
, chunk_size
);
9811 if (head_pad
|| tail_pad
) {
9812 o
->extent_map
.fault_range(db
, offset
- head_pad
,
9813 end_offs
- offset
+ head_pad
+ tail_pad
);
9816 o
->extent_map
.has_any_lextents(offset
- head_pad
, chunk_size
)) {
9819 if (tail_pad
&& o
->extent_map
.has_any_lextents(end_offs
, tail_pad
)) {
9823 uint64_t b_off
= offset
- head_pad
- bstart
;
9824 uint64_t b_len
= length
+ head_pad
+ tail_pad
;
9826 // direct write into unused blocks of an existing mutable blob?
9827 if ((b_off
% chunk_size
== 0 && b_len
% chunk_size
== 0) &&
9828 b
->get_blob().get_ondisk_length() >= b_off
+ b_len
&&
9829 b
->get_blob().is_unused(b_off
, b_len
) &&
9830 b
->get_blob().is_allocated(b_off
, b_len
)) {
9831 _apply_padding(head_pad
, tail_pad
, bl
);
9833 dout(20) << __func__
<< " write to unused 0x" << std::hex
9834 << b_off
<< "~" << b_len
9835 << " pad 0x" << head_pad
<< " + 0x" << tail_pad
9836 << std::dec
<< " of mutable " << *b
<< dendl
;
9837 _buffer_cache_write(txc
, b
, b_off
, bl
,
9838 wctx
->buffered
? 0 : Buffer::FLAG_NOCACHE
);
9840 if (!g_conf
->bluestore_debug_omit_block_device_write
) {
9841 if (b_len
<= prefer_deferred_size
) {
9842 dout(20) << __func__
<< " deferring small 0x" << std::hex
9843 << b_len
<< std::dec
<< " unused write via deferred" << dendl
;
9844 bluestore_deferred_op_t
*op
= _get_deferred_op(txc
, o
);
9845 op
->op
= bluestore_deferred_op_t::OP_WRITE
;
9848 [&](uint64_t offset
, uint64_t length
) {
9849 op
->extents
.emplace_back(bluestore_pextent_t(offset
, length
));
9854 b
->get_blob().map_bl(
9856 [&](uint64_t offset
, bufferlist
& t
) {
9857 bdev
->aio_write(offset
, t
,
9858 &txc
->ioc
, wctx
->buffered
);
9862 b
->dirty_blob().calc_csum(b_off
, bl
);
9863 dout(20) << __func__
<< " lex old " << *ep
<< dendl
;
9864 Extent
*le
= o
->extent_map
.set_lextent(c
, offset
, b_off
+ head_pad
, length
,
9866 &wctx
->old_extents
);
9867 b
->dirty_blob().mark_used(le
->blob_offset
, le
->length
);
9868 txc
->statfs_delta
.stored() += le
->length
;
9869 dout(20) << __func__
<< " lex " << *le
<< dendl
;
9870 logger
->inc(l_bluestore_write_small_unused
);
9873 // read some data to fill out the chunk?
9874 uint64_t head_read
= P2PHASE(b_off
, chunk_size
);
9875 uint64_t tail_read
= P2NPHASE(b_off
+ b_len
, chunk_size
);
9876 if ((head_read
|| tail_read
) &&
9877 (b
->get_blob().get_ondisk_length() >= b_off
+ b_len
+ tail_read
) &&
9878 head_read
+ tail_read
< min_alloc_size
) {
9880 b_len
+= head_read
+ tail_read
;
9883 head_read
= tail_read
= 0;
9886 // chunk-aligned deferred overwrite?
9887 if (b
->get_blob().get_ondisk_length() >= b_off
+ b_len
&&
9888 b_off
% chunk_size
== 0 &&
9889 b_len
% chunk_size
== 0 &&
9890 b
->get_blob().is_allocated(b_off
, b_len
)) {
9892 _apply_padding(head_pad
, tail_pad
, bl
);
9894 dout(20) << __func__
<< " reading head 0x" << std::hex
<< head_read
9895 << " and tail 0x" << tail_read
<< std::dec
<< dendl
;
9898 int r
= _do_read(c
.get(), o
, offset
- head_pad
- head_read
, head_read
,
9900 assert(r
>= 0 && r
<= (int)head_read
);
9901 size_t zlen
= head_read
- r
;
9903 head_bl
.append_zero(zlen
);
9904 logger
->inc(l_bluestore_write_pad_bytes
, zlen
);
9906 bl
.claim_prepend(head_bl
);
9907 logger
->inc(l_bluestore_write_penalty_read_ops
);
9911 int r
= _do_read(c
.get(), o
, offset
+ length
+ tail_pad
, tail_read
,
9913 assert(r
>= 0 && r
<= (int)tail_read
);
9914 size_t zlen
= tail_read
- r
;
9916 tail_bl
.append_zero(zlen
);
9917 logger
->inc(l_bluestore_write_pad_bytes
, zlen
);
9919 bl
.claim_append(tail_bl
);
9920 logger
->inc(l_bluestore_write_penalty_read_ops
);
9922 logger
->inc(l_bluestore_write_small_pre_read
);
9924 bluestore_deferred_op_t
*op
= _get_deferred_op(txc
, o
);
9925 op
->op
= bluestore_deferred_op_t::OP_WRITE
;
9926 _buffer_cache_write(txc
, b
, b_off
, bl
,
9927 wctx
->buffered
? 0 : Buffer::FLAG_NOCACHE
);
9929 int r
= b
->get_blob().map(
9931 [&](uint64_t offset
, uint64_t length
) {
9932 op
->extents
.emplace_back(bluestore_pextent_t(offset
, length
));
9936 if (b
->get_blob().csum_type
) {
9937 b
->dirty_blob().calc_csum(b_off
, bl
);
9940 dout(20) << __func__
<< " deferred write 0x" << std::hex
<< b_off
<< "~"
9941 << b_len
<< std::dec
<< " of mutable " << *b
9942 << " at " << op
->extents
<< dendl
;
9943 Extent
*le
= o
->extent_map
.set_lextent(c
, offset
, offset
- bstart
, length
,
9944 b
, &wctx
->old_extents
);
9945 b
->dirty_blob().mark_used(le
->blob_offset
, le
->length
);
9946 txc
->statfs_delta
.stored() += le
->length
;
9947 dout(20) << __func__
<< " lex " << *le
<< dendl
;
9948 logger
->inc(l_bluestore_write_small_deferred
);
9951 // try to reuse blob if we can
9952 if (b
->can_reuse_blob(min_alloc_size
,
9956 assert(alloc_len
== min_alloc_size
); // expecting data always
9957 // fit into reused blob
9958 // Need to check for pending writes desiring to
9959 // reuse the same pextent. The rationale is that during GC two chunks
9960 // from garbage blobs(compressed?) can share logical space within the same
9961 // AU. That's in turn might be caused by unaligned len in clone_range2.
9962 // Hence the second write will fail in an attempt to reuse blob at
9963 // do_alloc_write().
9964 if (!wctx
->has_conflict(b
,
9966 offset0
+ alloc_len
,
9969 // we can't reuse pad_head/pad_tail since they might be truncated
9970 // due to existent extents
9971 uint64_t b_off
= offset
- bstart
;
9972 uint64_t b_off0
= b_off
;
9973 _pad_zeros(&bl
, &b_off0
, chunk_size
);
9975 dout(20) << __func__
<< " reuse blob " << *b
<< std::hex
9976 << " (0x" << b_off0
<< "~" << bl
.length() << ")"
9977 << " (0x" << b_off
<< "~" << length
<< ")"
9978 << std::dec
<< dendl
;
9980 o
->extent_map
.punch_hole(c
, offset
, length
, &wctx
->old_extents
);
9981 wctx
->write(offset
, b
, alloc_len
, b_off0
, bl
, b_off
, length
,
9983 logger
->inc(l_bluestore_write_small_unused
);
9990 } // if (ep != end && ep->logical_offset < offset + max_bsize)
9992 // check extent for reuse in reverse order
9993 if (prev_ep
!= end
&& prev_ep
->logical_offset
>= min_off
) {
9994 BlobRef b
= prev_ep
->blob
;
9995 auto bstart
= prev_ep
->blob_start();
9996 dout(20) << __func__
<< " considering " << *b
9997 << " bstart 0x" << std::hex
<< bstart
<< std::dec
<< dendl
;
9998 if (b
->can_reuse_blob(min_alloc_size
,
10002 assert(alloc_len
== min_alloc_size
); // expecting data always
10003 // fit into reused blob
10004 // Need to check for pending writes desiring to
10005 // reuse the same pextent. The rationale is that during GC two chunks
10006 // from garbage blobs(compressed?) can share logical space within the same
10007 // AU. That's in turn might be caused by unaligned len in clone_range2.
10008 // Hence the second write will fail in an attempt to reuse blob at
10009 // do_alloc_write().
10010 if (!wctx
->has_conflict(b
,
10012 offset0
+ alloc_len
,
10015 uint64_t chunk_size
= b
->get_blob().get_chunk_size(block_size
);
10016 uint64_t b_off
= offset
- bstart
;
10017 uint64_t b_off0
= b_off
;
10018 _pad_zeros(&bl
, &b_off0
, chunk_size
);
10020 dout(20) << __func__
<< " reuse blob " << *b
<< std::hex
10021 << " (0x" << b_off0
<< "~" << bl
.length() << ")"
10022 << " (0x" << b_off
<< "~" << length
<< ")"
10023 << std::dec
<< dendl
;
10025 o
->extent_map
.punch_hole(c
, offset
, length
, &wctx
->old_extents
);
10026 wctx
->write(offset
, b
, alloc_len
, b_off0
, bl
, b_off
, length
,
10028 logger
->inc(l_bluestore_write_small_unused
);
10032 if (prev_ep
!= begin
) {
10036 prev_ep
= end
; // to avoid useless first extent re-check
10038 } // if (prev_ep != end && prev_ep->logical_offset >= min_off)
10039 } while (any_change
);
10043 BlobRef b
= c
->new_blob();
10044 uint64_t b_off
= P2PHASE(offset
, alloc_len
);
10045 uint64_t b_off0
= b_off
;
10046 _pad_zeros(&bl
, &b_off0
, block_size
);
10047 o
->extent_map
.punch_hole(c
, offset
, length
, &wctx
->old_extents
);
10048 wctx
->write(offset
, b
, alloc_len
, b_off0
, bl
, b_off
, length
, true, true);
10049 logger
->inc(l_bluestore_write_small_new
);
10054 void BlueStore::_do_write_big(
10058 uint64_t offset
, uint64_t length
,
10059 bufferlist::iterator
& blp
,
10060 WriteContext
*wctx
)
10062 dout(10) << __func__
<< " 0x" << std::hex
<< offset
<< "~" << length
10063 << " target_blob_size 0x" << wctx
->target_blob_size
<< std::dec
10064 << " compress " << (int)wctx
->compress
10066 logger
->inc(l_bluestore_write_big
);
10067 logger
->inc(l_bluestore_write_big_bytes
, length
);
10068 o
->extent_map
.punch_hole(c
, offset
, length
, &wctx
->old_extents
);
10069 auto max_bsize
= MAX(wctx
->target_blob_size
, min_alloc_size
);
10070 while (length
> 0) {
10071 bool new_blob
= false;
10072 uint32_t l
= MIN(max_bsize
, length
);
10074 uint32_t b_off
= 0;
10076 //attempting to reuse existing blob
10077 if (!wctx
->compress
) {
10078 // look for an existing mutable blob we can reuse
10079 auto begin
= o
->extent_map
.extent_map
.begin();
10080 auto end
= o
->extent_map
.extent_map
.end();
10081 auto ep
= o
->extent_map
.seek_lextent(offset
);
10083 if (prev_ep
!= begin
) {
10086 prev_ep
= end
; // to avoid this extent check as it's a duplicate
10088 auto min_off
= offset
>= max_bsize
? offset
- max_bsize
: 0;
10089 // search suitable extent in both forward and reverse direction in
10090 // [offset - target_max_blob_size, offset + target_max_blob_size] range
10091 // then check if blob can be reused via can_reuse_blob func.
10094 any_change
= false;
10095 if (ep
!= end
&& ep
->logical_offset
< offset
+ max_bsize
) {
10096 if (offset
>= ep
->blob_start() &&
10097 ep
->blob
->can_reuse_blob(min_alloc_size
, max_bsize
,
10098 offset
- ep
->blob_start(),
10101 b_off
= offset
- ep
->blob_start();
10102 prev_ep
= end
; // to avoid check below
10103 dout(20) << __func__
<< " reuse blob " << *b
<< std::hex
10104 << " (0x" << b_off
<< "~" << l
<< ")" << std::dec
<< dendl
;
10111 if (prev_ep
!= end
&& prev_ep
->logical_offset
>= min_off
) {
10112 if (prev_ep
->blob
->can_reuse_blob(min_alloc_size
, max_bsize
,
10113 offset
- prev_ep
->blob_start(),
10116 b_off
= offset
- prev_ep
->blob_start();
10117 dout(20) << __func__
<< " reuse blob " << *b
<< std::hex
10118 << " (0x" << b_off
<< "~" << l
<< ")" << std::dec
<< dendl
;
10119 } else if (prev_ep
!= begin
) {
10123 prev_ep
= end
; // to avoid useless first extent re-check
10126 } while (b
== nullptr && any_change
);
10128 if (b
== nullptr) {
10136 wctx
->write(offset
, b
, l
, b_off
, t
, b_off
, l
, false, new_blob
);
10139 logger
->inc(l_bluestore_write_big_blobs
);
10143 int BlueStore::_do_alloc_write(
10145 CollectionRef coll
,
10147 WriteContext
*wctx
)
10149 dout(20) << __func__
<< " txc " << txc
10150 << " " << wctx
->writes
.size() << " blobs"
10152 if (wctx
->writes
.empty()) {
10158 if (wctx
->compress
) {
10160 "compression_algorithm",
10164 if (coll
->pool_opts
.get(pool_opts_t::COMPRESSION_ALGORITHM
, &val
)) {
10165 CompressorRef cp
= compressor
;
10166 if (!cp
|| cp
->get_type_name() != val
) {
10167 cp
= Compressor::create(cct
, val
);
10169 return boost::optional
<CompressorRef
>(cp
);
10171 return boost::optional
<CompressorRef
>();
10175 crr
= select_option(
10176 "compression_required_ratio",
10177 cct
->_conf
->bluestore_compression_required_ratio
,
10180 if (coll
->pool_opts
.get(pool_opts_t::COMPRESSION_REQUIRED_RATIO
, &val
)) {
10181 return boost::optional
<double>(val
);
10183 return boost::optional
<double>();
10189 int csum
= csum_type
.load();
10190 csum
= select_option(
10195 if (coll
->pool_opts
.get(pool_opts_t::CSUM_TYPE
, &val
)) {
10196 return boost::optional
<int>(val
);
10198 return boost::optional
<int>();
10202 // compress (as needed) and calc needed space
10204 auto max_bsize
= MAX(wctx
->target_blob_size
, min_alloc_size
);
10205 for (auto& wi
: wctx
->writes
) {
10206 if (c
&& wi
.blob_length
> min_alloc_size
) {
10207 utime_t start
= ceph_clock_now();
10210 assert(wi
.b_off
== 0);
10211 assert(wi
.blob_length
== wi
.bl
.length());
10213 // FIXME: memory alignment here is bad
10215 int r
= c
->compress(wi
.bl
, t
);
10218 bluestore_compression_header_t chdr
;
10219 chdr
.type
= c
->get_type();
10220 chdr
.length
= t
.length();
10221 ::encode(chdr
, wi
.compressed_bl
);
10222 wi
.compressed_bl
.claim_append(t
);
10224 wi
.compressed_len
= wi
.compressed_bl
.length();
10225 uint64_t newlen
= P2ROUNDUP(wi
.compressed_len
, min_alloc_size
);
10226 uint64_t want_len_raw
= wi
.blob_length
* crr
;
10227 uint64_t want_len
= P2ROUNDUP(want_len_raw
, min_alloc_size
);
10228 if (newlen
<= want_len
&& newlen
< wi
.blob_length
) {
10229 // Cool. We compressed at least as much as we were hoping to.
10230 // pad out to min_alloc_size
10231 wi
.compressed_bl
.append_zero(newlen
- wi
.compressed_len
);
10232 logger
->inc(l_bluestore_write_pad_bytes
, newlen
- wi
.compressed_len
);
10233 dout(20) << __func__
<< std::hex
<< " compressed 0x" << wi
.blob_length
10234 << " -> 0x" << wi
.compressed_len
<< " => 0x" << newlen
10235 << " with " << c
->get_type()
10236 << std::dec
<< dendl
;
10237 txc
->statfs_delta
.compressed() += wi
.compressed_len
;
10238 txc
->statfs_delta
.compressed_original() += wi
.blob_length
;
10239 txc
->statfs_delta
.compressed_allocated() += newlen
;
10240 logger
->inc(l_bluestore_compress_success_count
);
10241 wi
.compressed
= true;
10244 dout(20) << __func__
<< std::hex
<< " 0x" << wi
.blob_length
10245 << " compressed to 0x" << wi
.compressed_len
<< " -> 0x" << newlen
10246 << " with " << c
->get_type()
10247 << ", which is more than required 0x" << want_len_raw
10248 << " -> 0x" << want_len
10249 << ", leaving uncompressed"
10250 << std::dec
<< dendl
;
10251 logger
->inc(l_bluestore_compress_rejected_count
);
10252 need
+= wi
.blob_length
;
10254 logger
->tinc(l_bluestore_compress_lat
,
10255 ceph_clock_now() - start
);
10257 need
+= wi
.blob_length
;
10260 int r
= alloc
->reserve(need
);
10262 derr
<< __func__
<< " failed to reserve 0x" << std::hex
<< need
<< std::dec
10266 AllocExtentVector prealloc
;
10267 prealloc
.reserve(2 * wctx
->writes
.size());;
10268 int prealloc_left
= 0;
10269 prealloc_left
= alloc
->allocate(
10270 need
, min_alloc_size
, need
,
10272 assert(prealloc_left
== (int64_t)need
);
10273 dout(20) << __func__
<< " prealloc " << prealloc
<< dendl
;
10274 auto prealloc_pos
= prealloc
.begin();
10276 for (auto& wi
: wctx
->writes
) {
10278 bluestore_blob_t
& dblob
= b
->dirty_blob();
10279 uint64_t b_off
= wi
.b_off
;
10280 bufferlist
*l
= &wi
.bl
;
10281 uint64_t final_length
= wi
.blob_length
;
10282 uint64_t csum_length
= wi
.blob_length
;
10283 unsigned csum_order
= block_size_order
;
10284 if (wi
.compressed
) {
10285 final_length
= wi
.compressed_bl
.length();
10286 csum_length
= final_length
;
10287 csum_order
= ctz(csum_length
);
10288 l
= &wi
.compressed_bl
;
10289 dblob
.set_compressed(wi
.blob_length
, wi
.compressed_len
);
10290 } else if (wi
.new_blob
) {
10291 // initialize newly created blob only
10292 assert(dblob
.is_mutable());
10293 if (l
->length() != wi
.blob_length
) {
10294 // hrm, maybe we could do better here, but let's not bother.
10295 dout(20) << __func__
<< " forcing csum_order to block_size_order "
10296 << block_size_order
<< dendl
;
10297 csum_order
= block_size_order
;
10299 csum_order
= std::min(wctx
->csum_order
, ctz(l
->length()));
10301 // try to align blob with max_blob_size to improve
10302 // its reuse ratio, e.g. in case of reverse write
10303 uint32_t suggested_boff
=
10304 (wi
.logical_offset
- (wi
.b_off0
- wi
.b_off
)) % max_bsize
;
10305 if ((suggested_boff
% (1 << csum_order
)) == 0 &&
10306 suggested_boff
+ final_length
<= max_bsize
&&
10307 suggested_boff
> b_off
) {
10308 dout(20) << __func__
<< " forcing blob_offset to 0x"
10309 << std::hex
<< suggested_boff
<< std::dec
<< dendl
;
10310 assert(suggested_boff
>= b_off
);
10311 csum_length
+= suggested_boff
- b_off
;
10312 b_off
= suggested_boff
;
10314 if (csum
!= Checksummer::CSUM_NONE
) {
10315 dout(20) << __func__
<< " initialize csum setting for new blob " << *b
10316 << " csum_type " << Checksummer::get_csum_type_string(csum
)
10317 << " csum_order " << csum_order
10318 << " csum_length 0x" << std::hex
<< csum_length
<< std::dec
10320 dblob
.init_csum(csum
, csum_order
, csum_length
);
10324 AllocExtentVector extents
;
10325 int64_t left
= final_length
;
10327 assert(prealloc_left
> 0);
10328 if (prealloc_pos
->length
<= left
) {
10329 prealloc_left
-= prealloc_pos
->length
;
10330 left
-= prealloc_pos
->length
;
10331 txc
->statfs_delta
.allocated() += prealloc_pos
->length
;
10332 extents
.push_back(*prealloc_pos
);
10335 extents
.emplace_back(prealloc_pos
->offset
, left
);
10336 prealloc_pos
->offset
+= left
;
10337 prealloc_pos
->length
-= left
;
10338 prealloc_left
-= left
;
10339 txc
->statfs_delta
.allocated() += left
;
10344 for (auto& p
: extents
) {
10345 txc
->allocated
.insert(p
.offset
, p
.length
);
10347 dblob
.allocated(P2ALIGN(b_off
, min_alloc_size
), final_length
, extents
);
10349 dout(20) << __func__
<< " blob " << *b
<< dendl
;
10350 if (dblob
.has_csum()) {
10351 dblob
.calc_csum(b_off
, *l
);
10354 if (wi
.mark_unused
) {
10355 auto b_end
= b_off
+ wi
.bl
.length();
10357 dblob
.add_unused(0, b_off
);
10359 if (b_end
< wi
.blob_length
) {
10360 dblob
.add_unused(b_end
, wi
.blob_length
- b_end
);
10364 Extent
*le
= o
->extent_map
.set_lextent(coll
, wi
.logical_offset
,
10365 b_off
+ (wi
.b_off0
- wi
.b_off
),
10369 wi
.b
->dirty_blob().mark_used(le
->blob_offset
, le
->length
);
10370 txc
->statfs_delta
.stored() += le
->length
;
10371 dout(20) << __func__
<< " lex " << *le
<< dendl
;
10372 _buffer_cache_write(txc
, wi
.b
, b_off
, wi
.bl
,
10373 wctx
->buffered
? 0 : Buffer::FLAG_NOCACHE
);
10376 if (!g_conf
->bluestore_debug_omit_block_device_write
) {
10377 if (l
->length() <= prefer_deferred_size
.load()) {
10378 dout(20) << __func__
<< " deferring small 0x" << std::hex
10379 << l
->length() << std::dec
<< " write via deferred" << dendl
;
10380 bluestore_deferred_op_t
*op
= _get_deferred_op(txc
, o
);
10381 op
->op
= bluestore_deferred_op_t::OP_WRITE
;
10382 int r
= b
->get_blob().map(
10383 b_off
, l
->length(),
10384 [&](uint64_t offset
, uint64_t length
) {
10385 op
->extents
.emplace_back(bluestore_pextent_t(offset
, length
));
10391 b
->get_blob().map_bl(
10393 [&](uint64_t offset
, bufferlist
& t
) {
10394 bdev
->aio_write(offset
, t
, &txc
->ioc
, false);
10399 assert(prealloc_pos
== prealloc
.end());
10400 assert(prealloc_left
== 0);
10404 void BlueStore::_wctx_finish(
10408 WriteContext
*wctx
,
10409 set
<SharedBlob
*> *maybe_unshared_blobs
)
10411 auto oep
= wctx
->old_extents
.begin();
10412 while (oep
!= wctx
->old_extents
.end()) {
10414 oep
= wctx
->old_extents
.erase(oep
);
10415 dout(20) << __func__
<< " lex_old " << lo
.e
<< dendl
;
10416 BlobRef b
= lo
.e
.blob
;
10417 const bluestore_blob_t
& blob
= b
->get_blob();
10418 if (blob
.is_compressed()) {
10419 if (lo
.blob_empty
) {
10420 txc
->statfs_delta
.compressed() -= blob
.get_compressed_payload_length();
10422 txc
->statfs_delta
.compressed_original() -= lo
.e
.length
;
10425 txc
->statfs_delta
.stored() -= lo
.e
.length
;
10427 dout(20) << __func__
<< " blob release " << r
<< dendl
;
10428 if (blob
.is_shared()) {
10429 PExtentVector final
;
10430 c
->load_shared_blob(b
->shared_blob
);
10432 b
->shared_blob
->put_ref(
10433 e
.offset
, e
.length
, &final
,
10434 b
->is_referenced() ? nullptr : maybe_unshared_blobs
);
10436 dout(20) << __func__
<< " shared_blob release " << final
10437 << " from " << *b
->shared_blob
<< dendl
;
10438 txc
->write_shared_blob(b
->shared_blob
);
10443 // we can't invalidate our logical extents as we drop them because
10444 // other lextents (either in our onode or others) may still
10445 // reference them. but we can throw out anything that is no
10446 // longer allocated. Note that this will leave behind edge bits
10447 // that are no longer referenced but not deallocated (until they
10448 // age out of the cache naturally).
10449 b
->discard_unallocated(c
.get());
10451 dout(20) << __func__
<< " release " << e
<< dendl
;
10452 txc
->released
.insert(e
.offset
, e
.length
);
10453 txc
->statfs_delta
.allocated() -= e
.length
;
10454 if (blob
.is_compressed()) {
10455 txc
->statfs_delta
.compressed_allocated() -= e
.length
;
10459 if (b
->is_spanning() && !b
->is_referenced()) {
10460 dout(20) << __func__
<< " spanning_blob_map removing empty " << *b
10462 o
->extent_map
.spanning_blob_map
.erase(b
->id
);
10467 void BlueStore::_do_write_data(
10474 WriteContext
*wctx
)
10476 uint64_t end
= offset
+ length
;
10477 bufferlist::iterator p
= bl
.begin();
10479 if (offset
/ min_alloc_size
== (end
- 1) / min_alloc_size
&&
10480 (length
!= min_alloc_size
)) {
10481 // we fall within the same block
10482 _do_write_small(txc
, c
, o
, offset
, length
, p
, wctx
);
10484 uint64_t head_offset
, head_length
;
10485 uint64_t middle_offset
, middle_length
;
10486 uint64_t tail_offset
, tail_length
;
10488 head_offset
= offset
;
10489 head_length
= P2NPHASE(offset
, min_alloc_size
);
10491 tail_offset
= P2ALIGN(end
, min_alloc_size
);
10492 tail_length
= P2PHASE(end
, min_alloc_size
);
10494 middle_offset
= head_offset
+ head_length
;
10495 middle_length
= length
- head_length
- tail_length
;
10498 _do_write_small(txc
, c
, o
, head_offset
, head_length
, p
, wctx
);
10501 if (middle_length
) {
10502 _do_write_big(txc
, c
, o
, middle_offset
, middle_length
, p
, wctx
);
10506 _do_write_small(txc
, c
, o
, tail_offset
, tail_length
, p
, wctx
);
10511 void BlueStore::_choose_write_options(
10514 uint32_t fadvise_flags
,
10515 WriteContext
*wctx
)
10517 if (fadvise_flags
& CEPH_OSD_OP_FLAG_FADVISE_WILLNEED
) {
10518 dout(20) << __func__
<< " will do buffered write" << dendl
;
10519 wctx
->buffered
= true;
10520 } else if (cct
->_conf
->bluestore_default_buffered_write
&&
10521 (fadvise_flags
& (CEPH_OSD_OP_FLAG_FADVISE_DONTNEED
|
10522 CEPH_OSD_OP_FLAG_FADVISE_NOCACHE
)) == 0) {
10523 dout(20) << __func__
<< " defaulting to buffered write" << dendl
;
10524 wctx
->buffered
= true;
10527 // apply basic csum block size
10528 wctx
->csum_order
= block_size_order
;
10530 // compression parameters
10531 unsigned alloc_hints
= o
->onode
.alloc_hint_flags
;
10532 auto cm
= select_option(
10533 "compression_mode",
10537 if(c
->pool_opts
.get(pool_opts_t::COMPRESSION_MODE
, &val
)) {
10538 return boost::optional
<Compressor::CompressionMode
>(
10539 Compressor::get_comp_mode_type(val
));
10541 return boost::optional
<Compressor::CompressionMode
>();
10545 wctx
->compress
= (cm
!= Compressor::COMP_NONE
) &&
10546 ((cm
== Compressor::COMP_FORCE
) ||
10547 (cm
== Compressor::COMP_AGGRESSIVE
&&
10548 (alloc_hints
& CEPH_OSD_ALLOC_HINT_FLAG_INCOMPRESSIBLE
) == 0) ||
10549 (cm
== Compressor::COMP_PASSIVE
&&
10550 (alloc_hints
& CEPH_OSD_ALLOC_HINT_FLAG_COMPRESSIBLE
)));
10552 if ((alloc_hints
& CEPH_OSD_ALLOC_HINT_FLAG_SEQUENTIAL_READ
) &&
10553 (alloc_hints
& CEPH_OSD_ALLOC_HINT_FLAG_RANDOM_READ
) == 0 &&
10554 (alloc_hints
& (CEPH_OSD_ALLOC_HINT_FLAG_IMMUTABLE
|
10555 CEPH_OSD_ALLOC_HINT_FLAG_APPEND_ONLY
)) &&
10556 (alloc_hints
& CEPH_OSD_ALLOC_HINT_FLAG_RANDOM_WRITE
) == 0) {
10558 dout(20) << __func__
<< " will prefer large blob and csum sizes" << dendl
;
10560 if (o
->onode
.expected_write_size
) {
10561 wctx
->csum_order
= std::max(min_alloc_size_order
,
10562 (uint8_t)ctz(o
->onode
.expected_write_size
));
10564 wctx
->csum_order
= min_alloc_size_order
;
10567 if (wctx
->compress
) {
10568 wctx
->target_blob_size
= select_option(
10569 "compression_max_blob_size",
10570 comp_max_blob_size
.load(),
10573 if(c
->pool_opts
.get(pool_opts_t::COMPRESSION_MAX_BLOB_SIZE
, &val
)) {
10574 return boost::optional
<uint64_t>((uint64_t)val
);
10576 return boost::optional
<uint64_t>();
10581 if (wctx
->compress
) {
10582 wctx
->target_blob_size
= select_option(
10583 "compression_min_blob_size",
10584 comp_min_blob_size
.load(),
10587 if(c
->pool_opts
.get(pool_opts_t::COMPRESSION_MIN_BLOB_SIZE
, &val
)) {
10588 return boost::optional
<uint64_t>((uint64_t)val
);
10590 return boost::optional
<uint64_t>();
10596 uint64_t max_bsize
= max_blob_size
.load();
10597 if (wctx
->target_blob_size
== 0 || wctx
->target_blob_size
> max_bsize
) {
10598 wctx
->target_blob_size
= max_bsize
;
10601 // set the min blob size floor at 2x the min_alloc_size, or else we
10602 // won't be able to allocate a smaller extent for the compressed
10604 if (wctx
->compress
&&
10605 wctx
->target_blob_size
< min_alloc_size
* 2) {
10606 wctx
->target_blob_size
= min_alloc_size
* 2;
10609 dout(20) << __func__
<< " prefer csum_order " << wctx
->csum_order
10610 << " target_blob_size 0x" << std::hex
<< wctx
->target_blob_size
10611 << std::dec
<< dendl
;
10614 int BlueStore::_do_gc(
10618 const GarbageCollector
& gc
,
10619 const WriteContext
& wctx
,
10620 uint64_t *dirty_start
,
10621 uint64_t *dirty_end
)
10623 auto& extents_to_collect
= gc
.get_extents_to_collect();
10625 bool dirty_range_updated
= false;
10626 WriteContext wctx_gc
;
10627 wctx_gc
.fork(wctx
); // make a clone for garbage collection
10629 for (auto it
= extents_to_collect
.begin();
10630 it
!= extents_to_collect
.end();
10633 int r
= _do_read(c
.get(), o
, it
->offset
, it
->length
, bl
, 0);
10634 assert(r
== (int)it
->length
);
10636 o
->extent_map
.fault_range(db
, it
->offset
, it
->length
);
10637 _do_write_data(txc
, c
, o
, it
->offset
, it
->length
, bl
, &wctx_gc
);
10638 logger
->inc(l_bluestore_gc_merged
, it
->length
);
10640 if (*dirty_start
> it
->offset
) {
10641 *dirty_start
= it
->offset
;
10642 dirty_range_updated
= true;
10645 if (*dirty_end
< it
->offset
+ it
->length
) {
10646 *dirty_end
= it
->offset
+ it
->length
;
10647 dirty_range_updated
= true;
10650 if (dirty_range_updated
) {
10651 o
->extent_map
.fault_range(db
, *dirty_start
, *dirty_end
);
10654 dout(30) << __func__
<< " alloc write" << dendl
;
10655 int r
= _do_alloc_write(txc
, c
, o
, &wctx_gc
);
10657 derr
<< __func__
<< " _do_alloc_write failed with " << cpp_strerror(r
)
10662 _wctx_finish(txc
, c
, o
, &wctx_gc
);
10666 int BlueStore::_do_write(
10673 uint32_t fadvise_flags
)
10677 dout(20) << __func__
10679 << " 0x" << std::hex
<< offset
<< "~" << length
10680 << " - have 0x" << o
->onode
.size
10681 << " (" << std::dec
<< o
->onode
.size
<< ")"
10683 << " fadvise_flags 0x" << std::hex
<< fadvise_flags
<< std::dec
10691 uint64_t end
= offset
+ length
;
10693 GarbageCollector
gc(c
->store
->cct
);
10695 auto dirty_start
= offset
;
10696 auto dirty_end
= end
;
10699 _choose_write_options(c
, o
, fadvise_flags
, &wctx
);
10700 o
->extent_map
.fault_range(db
, offset
, length
);
10701 _do_write_data(txc
, c
, o
, offset
, length
, bl
, &wctx
);
10702 r
= _do_alloc_write(txc
, c
, o
, &wctx
);
10704 derr
<< __func__
<< " _do_alloc_write failed with " << cpp_strerror(r
)
10709 // NB: _wctx_finish() will empty old_extents
10710 // so we must do gc estimation before that
10711 benefit
= gc
.estimate(offset
,
10717 _wctx_finish(txc
, c
, o
, &wctx
);
10718 if (end
> o
->onode
.size
) {
10719 dout(20) << __func__
<< " extending size to 0x" << std::hex
<< end
10720 << std::dec
<< dendl
;
10721 o
->onode
.size
= end
;
10724 if (benefit
>= g_conf
->bluestore_gc_enable_total_threshold
) {
10725 if (!gc
.get_extents_to_collect().empty()) {
10726 dout(20) << __func__
<< " perform garbage collection, "
10727 << "expected benefit = " << benefit
<< " AUs" << dendl
;
10728 r
= _do_gc(txc
, c
, o
, gc
, wctx
, &dirty_start
, &dirty_end
);
10730 derr
<< __func__
<< " _do_gc failed with " << cpp_strerror(r
)
10734 dout(20)<<__func__
<<" gc range is " << std::hex
<< dirty_start
10735 << "~" << dirty_end
- dirty_start
<< std::dec
<< dendl
;
10738 o
->extent_map
.compress_extent_map(dirty_start
, dirty_end
- dirty_start
);
10739 o
->extent_map
.dirty_range(dirty_start
, dirty_end
- dirty_start
);
10747 int BlueStore::_write(TransContext
*txc
,
10750 uint64_t offset
, size_t length
,
10752 uint32_t fadvise_flags
)
10754 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
10755 << " 0x" << std::hex
<< offset
<< "~" << length
<< std::dec
10758 if (offset
+ length
>= OBJECT_MAX_SIZE
) {
10761 _assign_nid(txc
, o
);
10762 r
= _do_write(txc
, c
, o
, offset
, length
, bl
, fadvise_flags
);
10763 txc
->write_onode(o
);
10765 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
10766 << " 0x" << std::hex
<< offset
<< "~" << length
<< std::dec
10767 << " = " << r
<< dendl
;
10771 int BlueStore::_zero(TransContext
*txc
,
10774 uint64_t offset
, size_t length
)
10776 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
10777 << " 0x" << std::hex
<< offset
<< "~" << length
<< std::dec
10780 if (offset
+ length
>= OBJECT_MAX_SIZE
) {
10783 _assign_nid(txc
, o
);
10784 r
= _do_zero(txc
, c
, o
, offset
, length
);
10786 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
10787 << " 0x" << std::hex
<< offset
<< "~" << length
<< std::dec
10788 << " = " << r
<< dendl
;
10792 int BlueStore::_do_zero(TransContext
*txc
,
10795 uint64_t offset
, size_t length
)
10797 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
10798 << " 0x" << std::hex
<< offset
<< "~" << length
<< std::dec
10805 o
->extent_map
.fault_range(db
, offset
, length
);
10806 o
->extent_map
.punch_hole(c
, offset
, length
, &wctx
.old_extents
);
10807 o
->extent_map
.dirty_range(offset
, length
);
10808 _wctx_finish(txc
, c
, o
, &wctx
);
10810 if (length
> 0 && offset
+ length
> o
->onode
.size
) {
10811 o
->onode
.size
= offset
+ length
;
10812 dout(20) << __func__
<< " extending size to " << offset
+ length
10815 txc
->write_onode(o
);
10817 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
10818 << " 0x" << std::hex
<< offset
<< "~" << length
<< std::dec
10819 << " = " << r
<< dendl
;
10823 void BlueStore::_do_truncate(
10824 TransContext
*txc
, CollectionRef
& c
, OnodeRef o
, uint64_t offset
,
10825 set
<SharedBlob
*> *maybe_unshared_blobs
)
10827 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
10828 << " 0x" << std::hex
<< offset
<< std::dec
<< dendl
;
10830 _dump_onode(o
, 30);
10832 if (offset
== o
->onode
.size
)
10835 if (offset
< o
->onode
.size
) {
10837 uint64_t length
= o
->onode
.size
- offset
;
10838 o
->extent_map
.fault_range(db
, offset
, length
);
10839 o
->extent_map
.punch_hole(c
, offset
, length
, &wctx
.old_extents
);
10840 o
->extent_map
.dirty_range(offset
, length
);
10841 _wctx_finish(txc
, c
, o
, &wctx
, maybe_unshared_blobs
);
10843 // if we have shards past EOF, ask for a reshard
10844 if (!o
->onode
.extent_map_shards
.empty() &&
10845 o
->onode
.extent_map_shards
.back().offset
>= offset
) {
10846 dout(10) << __func__
<< " request reshard past EOF" << dendl
;
10848 o
->extent_map
.request_reshard(offset
- 1, offset
+ length
);
10850 o
->extent_map
.request_reshard(0, length
);
10855 o
->onode
.size
= offset
;
10857 txc
->write_onode(o
);
10860 int BlueStore::_truncate(TransContext
*txc
,
10865 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
10866 << " 0x" << std::hex
<< offset
<< std::dec
10869 if (offset
>= OBJECT_MAX_SIZE
) {
10872 _do_truncate(txc
, c
, o
, offset
);
10874 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
10875 << " 0x" << std::hex
<< offset
<< std::dec
10876 << " = " << r
<< dendl
;
10880 int BlueStore::_do_remove(
10885 set
<SharedBlob
*> maybe_unshared_blobs
;
10886 bool is_gen
= !o
->oid
.is_no_gen();
10887 _do_truncate(txc
, c
, o
, 0, is_gen
? &maybe_unshared_blobs
: nullptr);
10888 if (o
->onode
.has_omap()) {
10890 _do_omap_clear(txc
, o
->onode
.nid
);
10894 for (auto &s
: o
->extent_map
.shards
) {
10895 dout(20) << __func__
<< " removing shard 0x" << std::hex
10896 << s
.shard_info
->offset
<< std::dec
<< dendl
;
10897 generate_extent_shard_key_and_apply(o
->key
, s
.shard_info
->offset
, &key
,
10898 [&](const string
& final_key
) {
10899 txc
->t
->rmkey(PREFIX_OBJ
, final_key
);
10903 txc
->t
->rmkey(PREFIX_OBJ
, o
->key
.c_str(), o
->key
.size());
10905 o
->extent_map
.clear();
10906 o
->onode
= bluestore_onode_t();
10907 _debug_obj_on_delete(o
->oid
);
10909 if (!is_gen
|| maybe_unshared_blobs
.empty()) {
10913 // see if we can unshare blobs still referenced by the head
10914 dout(10) << __func__
<< " gen and maybe_unshared_blobs "
10915 << maybe_unshared_blobs
<< dendl
;
10916 ghobject_t nogen
= o
->oid
;
10917 nogen
.generation
= ghobject_t::NO_GEN
;
10918 OnodeRef h
= c
->onode_map
.lookup(nogen
);
10920 if (!h
|| !h
->exists
) {
10924 dout(20) << __func__
<< " checking for unshareable blobs on " << h
10925 << " " << h
->oid
<< dendl
;
10926 map
<SharedBlob
*,bluestore_extent_ref_map_t
> expect
;
10927 for (auto& e
: h
->extent_map
.extent_map
) {
10928 const bluestore_blob_t
& b
= e
.blob
->get_blob();
10929 SharedBlob
*sb
= e
.blob
->shared_blob
.get();
10930 if (b
.is_shared() &&
10932 maybe_unshared_blobs
.count(sb
)) {
10933 if (b
.is_compressed()) {
10934 expect
[sb
].get(0, b
.get_ondisk_length());
10936 b
.map(e
.blob_offset
, e
.length
, [&](uint64_t off
, uint64_t len
) {
10937 expect
[sb
].get(off
, len
);
10944 vector
<SharedBlob
*> unshared_blobs
;
10945 unshared_blobs
.reserve(maybe_unshared_blobs
.size());
10946 for (auto& p
: expect
) {
10947 dout(20) << " ? " << *p
.first
<< " vs " << p
.second
<< dendl
;
10948 if (p
.first
->persistent
->ref_map
== p
.second
) {
10949 SharedBlob
*sb
= p
.first
;
10950 dout(20) << __func__
<< " unsharing " << *sb
<< dendl
;
10951 unshared_blobs
.push_back(sb
);
10952 txc
->unshare_blob(sb
);
10953 uint64_t sbid
= c
->make_blob_unshared(sb
);
10955 get_shared_blob_key(sbid
, &key
);
10956 txc
->t
->rmkey(PREFIX_SHARED_BLOB
, key
);
10960 if (unshared_blobs
.empty()) {
10964 for (auto& e
: h
->extent_map
.extent_map
) {
10965 const bluestore_blob_t
& b
= e
.blob
->get_blob();
10966 SharedBlob
*sb
= e
.blob
->shared_blob
.get();
10967 if (b
.is_shared() &&
10968 std::find(unshared_blobs
.begin(), unshared_blobs
.end(),
10969 sb
) != unshared_blobs
.end()) {
10970 dout(20) << __func__
<< " unsharing " << e
<< dendl
;
10971 bluestore_blob_t
& blob
= e
.blob
->dirty_blob();
10972 blob
.clear_flag(bluestore_blob_t::FLAG_SHARED
);
10973 h
->extent_map
.dirty_range(e
.logical_offset
, 1);
10976 txc
->write_onode(h
);
10981 int BlueStore::_remove(TransContext
*txc
,
10985 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< dendl
;
10986 int r
= _do_remove(txc
, c
, o
);
10987 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< " = " << r
<< dendl
;
10991 int BlueStore::_setattr(TransContext
*txc
,
10994 const string
& name
,
10997 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
10998 << " " << name
<< " (" << val
.length() << " bytes)"
11001 if (val
.is_partial()) {
11002 auto& b
= o
->onode
.attrs
[name
.c_str()] = bufferptr(val
.c_str(),
11004 b
.reassign_to_mempool(mempool::mempool_bluestore_cache_other
);
11006 auto& b
= o
->onode
.attrs
[name
.c_str()] = val
;
11007 b
.reassign_to_mempool(mempool::mempool_bluestore_cache_other
);
11009 txc
->write_onode(o
);
11010 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
11011 << " " << name
<< " (" << val
.length() << " bytes)"
11012 << " = " << r
<< dendl
;
11016 int BlueStore::_setattrs(TransContext
*txc
,
11019 const map
<string
,bufferptr
>& aset
)
11021 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
11022 << " " << aset
.size() << " keys"
11025 for (map
<string
,bufferptr
>::const_iterator p
= aset
.begin();
11026 p
!= aset
.end(); ++p
) {
11027 if (p
->second
.is_partial()) {
11028 auto& b
= o
->onode
.attrs
[p
->first
.c_str()] =
11029 bufferptr(p
->second
.c_str(), p
->second
.length());
11030 b
.reassign_to_mempool(mempool::mempool_bluestore_cache_other
);
11032 auto& b
= o
->onode
.attrs
[p
->first
.c_str()] = p
->second
;
11033 b
.reassign_to_mempool(mempool::mempool_bluestore_cache_other
);
11036 txc
->write_onode(o
);
11037 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
11038 << " " << aset
.size() << " keys"
11039 << " = " << r
<< dendl
;
11044 int BlueStore::_rmattr(TransContext
*txc
,
11047 const string
& name
)
11049 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
11050 << " " << name
<< dendl
;
11052 auto it
= o
->onode
.attrs
.find(name
.c_str());
11053 if (it
== o
->onode
.attrs
.end())
11056 o
->onode
.attrs
.erase(it
);
11057 txc
->write_onode(o
);
11060 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
11061 << " " << name
<< " = " << r
<< dendl
;
11065 int BlueStore::_rmattrs(TransContext
*txc
,
11069 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< dendl
;
11072 if (o
->onode
.attrs
.empty())
11075 o
->onode
.attrs
.clear();
11076 txc
->write_onode(o
);
11079 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< " = " << r
<< dendl
;
11083 void BlueStore::_do_omap_clear(TransContext
*txc
, uint64_t id
)
11085 KeyValueDB::Iterator it
= db
->get_iterator(PREFIX_OMAP
);
11086 string prefix
, tail
;
11087 get_omap_header(id
, &prefix
);
11088 get_omap_tail(id
, &tail
);
11089 it
->lower_bound(prefix
);
11090 while (it
->valid()) {
11091 if (it
->key() >= tail
) {
11092 dout(30) << __func__
<< " stop at " << pretty_binary_string(tail
)
11096 txc
->t
->rmkey(PREFIX_OMAP
, it
->key());
11097 dout(30) << __func__
<< " rm " << pretty_binary_string(it
->key()) << dendl
;
11102 int BlueStore::_omap_clear(TransContext
*txc
,
11106 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< dendl
;
11108 if (o
->onode
.has_omap()) {
11110 _do_omap_clear(txc
, o
->onode
.nid
);
11111 o
->onode
.clear_omap_flag();
11112 txc
->write_onode(o
);
11114 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< " = " << r
<< dendl
;
11118 int BlueStore::_omap_setkeys(TransContext
*txc
,
11123 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< dendl
;
11125 bufferlist::iterator p
= bl
.begin();
11127 if (!o
->onode
.has_omap()) {
11128 o
->onode
.set_omap_flag();
11129 txc
->write_onode(o
);
11131 txc
->note_modified_object(o
);
11134 _key_encode_u64(o
->onode
.nid
, &final_key
);
11135 final_key
.push_back('.');
11141 ::decode(value
, p
);
11142 final_key
.resize(9); // keep prefix
11144 dout(30) << __func__
<< " " << pretty_binary_string(final_key
)
11145 << " <- " << key
<< dendl
;
11146 txc
->t
->set(PREFIX_OMAP
, final_key
, value
);
11149 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< " = " << r
<< dendl
;
11153 int BlueStore::_omap_setheader(TransContext
*txc
,
11158 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< dendl
;
11161 if (!o
->onode
.has_omap()) {
11162 o
->onode
.set_omap_flag();
11163 txc
->write_onode(o
);
11165 txc
->note_modified_object(o
);
11167 get_omap_header(o
->onode
.nid
, &key
);
11168 txc
->t
->set(PREFIX_OMAP
, key
, bl
);
11170 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< " = " << r
<< dendl
;
11174 int BlueStore::_omap_rmkeys(TransContext
*txc
,
11179 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< dendl
;
11181 bufferlist::iterator p
= bl
.begin();
11185 if (!o
->onode
.has_omap()) {
11188 _key_encode_u64(o
->onode
.nid
, &final_key
);
11189 final_key
.push_back('.');
11194 final_key
.resize(9); // keep prefix
11196 dout(30) << __func__
<< " rm " << pretty_binary_string(final_key
)
11197 << " <- " << key
<< dendl
;
11198 txc
->t
->rmkey(PREFIX_OMAP
, final_key
);
11200 txc
->note_modified_object(o
);
11203 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< " = " << r
<< dendl
;
11207 int BlueStore::_omap_rmkey_range(TransContext
*txc
,
11210 const string
& first
, const string
& last
)
11212 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< dendl
;
11213 KeyValueDB::Iterator it
;
11214 string key_first
, key_last
;
11216 if (!o
->onode
.has_omap()) {
11220 it
= db
->get_iterator(PREFIX_OMAP
);
11221 get_omap_key(o
->onode
.nid
, first
, &key_first
);
11222 get_omap_key(o
->onode
.nid
, last
, &key_last
);
11223 it
->lower_bound(key_first
);
11224 while (it
->valid()) {
11225 if (it
->key() >= key_last
) {
11226 dout(30) << __func__
<< " stop at " << pretty_binary_string(key_last
)
11230 txc
->t
->rmkey(PREFIX_OMAP
, it
->key());
11231 dout(30) << __func__
<< " rm " << pretty_binary_string(it
->key()) << dendl
;
11234 txc
->note_modified_object(o
);
11237 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
<< " = " << r
<< dendl
;
11241 int BlueStore::_set_alloc_hint(
11245 uint64_t expected_object_size
,
11246 uint64_t expected_write_size
,
11249 dout(15) << __func__
<< " " << c
->cid
<< " " << o
->oid
11250 << " object_size " << expected_object_size
11251 << " write_size " << expected_write_size
11252 << " flags " << ceph_osd_alloc_hint_flag_string(flags
)
11255 o
->onode
.expected_object_size
= expected_object_size
;
11256 o
->onode
.expected_write_size
= expected_write_size
;
11257 o
->onode
.alloc_hint_flags
= flags
;
11258 txc
->write_onode(o
);
11259 dout(10) << __func__
<< " " << c
->cid
<< " " << o
->oid
11260 << " object_size " << expected_object_size
11261 << " write_size " << expected_write_size
11262 << " flags " << ceph_osd_alloc_hint_flag_string(flags
)
11263 << " = " << r
<< dendl
;
11267 int BlueStore::_clone(TransContext
*txc
,
11272 dout(15) << __func__
<< " " << c
->cid
<< " " << oldo
->oid
<< " -> "
11273 << newo
->oid
<< dendl
;
11275 if (oldo
->oid
.hobj
.get_hash() != newo
->oid
.hobj
.get_hash()) {
11276 derr
<< __func__
<< " mismatched hash on " << oldo
->oid
11277 << " and " << newo
->oid
<< dendl
;
11281 _assign_nid(txc
, newo
);
11285 _do_truncate(txc
, c
, newo
, 0);
11286 if (cct
->_conf
->bluestore_clone_cow
) {
11287 _do_clone_range(txc
, c
, oldo
, newo
, 0, oldo
->onode
.size
, 0);
11290 r
= _do_read(c
.get(), oldo
, 0, oldo
->onode
.size
, bl
, 0);
11293 r
= _do_write(txc
, c
, newo
, 0, oldo
->onode
.size
, bl
, 0);
11299 newo
->onode
.attrs
= oldo
->onode
.attrs
;
11302 if (newo
->onode
.has_omap()) {
11303 dout(20) << __func__
<< " clearing old omap data" << dendl
;
11305 _do_omap_clear(txc
, newo
->onode
.nid
);
11307 if (oldo
->onode
.has_omap()) {
11308 dout(20) << __func__
<< " copying omap data" << dendl
;
11309 if (!newo
->onode
.has_omap()) {
11310 newo
->onode
.set_omap_flag();
11312 KeyValueDB::Iterator it
= db
->get_iterator(PREFIX_OMAP
);
11314 get_omap_header(oldo
->onode
.nid
, &head
);
11315 get_omap_tail(oldo
->onode
.nid
, &tail
);
11316 it
->lower_bound(head
);
11317 while (it
->valid()) {
11318 if (it
->key() >= tail
) {
11319 dout(30) << __func__
<< " reached tail" << dendl
;
11322 dout(30) << __func__
<< " got header/data "
11323 << pretty_binary_string(it
->key()) << dendl
;
11325 rewrite_omap_key(newo
->onode
.nid
, it
->key(), &key
);
11326 txc
->t
->set(PREFIX_OMAP
, key
, it
->value());
11331 newo
->onode
.clear_omap_flag();
11334 txc
->write_onode(newo
);
11338 dout(10) << __func__
<< " " << c
->cid
<< " " << oldo
->oid
<< " -> "
11339 << newo
->oid
<< " = " << r
<< dendl
;
11343 int BlueStore::_do_clone_range(
11352 dout(15) << __func__
<< " " << c
->cid
<< " " << oldo
->oid
<< " -> "
11354 << " 0x" << std::hex
<< srcoff
<< "~" << length
<< " -> "
11355 << " 0x" << dstoff
<< "~" << length
<< std::dec
<< dendl
;
11356 oldo
->extent_map
.fault_range(db
, srcoff
, length
);
11357 newo
->extent_map
.fault_range(db
, dstoff
, length
);
11361 // hmm, this could go into an ExtentMap::dup() method.
11362 vector
<BlobRef
> id_to_blob(oldo
->extent_map
.extent_map
.size());
11363 for (auto &e
: oldo
->extent_map
.extent_map
) {
11364 e
.blob
->last_encoded_id
= -1;
11367 uint64_t end
= srcoff
+ length
;
11368 uint32_t dirty_range_begin
= 0;
11369 uint32_t dirty_range_end
= 0;
11370 bool src_dirty
= false;
11371 for (auto ep
= oldo
->extent_map
.seek_lextent(srcoff
);
11372 ep
!= oldo
->extent_map
.extent_map
.end();
11375 if (e
.logical_offset
>= end
) {
11378 dout(20) << __func__
<< " src " << e
<< dendl
;
11380 bool blob_duped
= true;
11381 if (e
.blob
->last_encoded_id
>= 0) {
11382 // blob is already duped
11383 cb
= id_to_blob
[e
.blob
->last_encoded_id
];
11384 blob_duped
= false;
11387 const bluestore_blob_t
& blob
= e
.blob
->get_blob();
11388 // make sure it is shared
11389 if (!blob
.is_shared()) {
11390 c
->make_blob_shared(_assign_blobid(txc
), e
.blob
);
11393 dirty_range_begin
= e
.logical_offset
;
11395 assert(e
.logical_end() > 0);
11396 // -1 to exclude next potential shard
11397 dirty_range_end
= e
.logical_end() - 1;
11399 c
->load_shared_blob(e
.blob
->shared_blob
);
11402 e
.blob
->last_encoded_id
= n
;
11403 id_to_blob
[n
] = cb
;
11405 // bump the extent refs on the copied blob's extents
11406 for (auto p
: blob
.get_extents()) {
11407 if (p
.is_valid()) {
11408 e
.blob
->shared_blob
->get_ref(p
.offset
, p
.length
);
11411 txc
->write_shared_blob(e
.blob
->shared_blob
);
11412 dout(20) << __func__
<< " new " << *cb
<< dendl
;
11415 int skip_front
, skip_back
;
11416 if (e
.logical_offset
< srcoff
) {
11417 skip_front
= srcoff
- e
.logical_offset
;
11421 if (e
.logical_end() > end
) {
11422 skip_back
= e
.logical_end() - end
;
11426 Extent
*ne
= new Extent(e
.logical_offset
+ skip_front
+ dstoff
- srcoff
,
11427 e
.blob_offset
+ skip_front
,
11428 e
.length
- skip_front
- skip_back
, cb
);
11429 newo
->extent_map
.extent_map
.insert(*ne
);
11430 ne
->blob
->get_ref(c
.get(), ne
->blob_offset
, ne
->length
);
11431 // fixme: we may leave parts of new blob unreferenced that could
11432 // be freed (relative to the shared_blob).
11433 txc
->statfs_delta
.stored() += ne
->length
;
11434 if (e
.blob
->get_blob().is_compressed()) {
11435 txc
->statfs_delta
.compressed_original() += ne
->length
;
11437 txc
->statfs_delta
.compressed() +=
11438 cb
->get_blob().get_compressed_payload_length();
11441 dout(20) << __func__
<< " dst " << *ne
<< dendl
;
11445 oldo
->extent_map
.dirty_range(dirty_range_begin
,
11446 dirty_range_end
- dirty_range_begin
);
11447 txc
->write_onode(oldo
);
11449 txc
->write_onode(newo
);
11451 if (dstoff
+ length
> newo
->onode
.size
) {
11452 newo
->onode
.size
= dstoff
+ length
;
11454 newo
->extent_map
.dirty_range(dstoff
, length
);
11460 int BlueStore::_clone_range(TransContext
*txc
,
11464 uint64_t srcoff
, uint64_t length
, uint64_t dstoff
)
11466 dout(15) << __func__
<< " " << c
->cid
<< " " << oldo
->oid
<< " -> "
11467 << newo
->oid
<< " from 0x" << std::hex
<< srcoff
<< "~" << length
11468 << " to offset 0x" << dstoff
<< std::dec
<< dendl
;
11471 if (srcoff
+ length
>= OBJECT_MAX_SIZE
||
11472 dstoff
+ length
>= OBJECT_MAX_SIZE
) {
11476 if (srcoff
+ length
> oldo
->onode
.size
) {
11481 _assign_nid(txc
, newo
);
11484 if (cct
->_conf
->bluestore_clone_cow
) {
11485 _do_zero(txc
, c
, newo
, dstoff
, length
);
11486 _do_clone_range(txc
, c
, oldo
, newo
, srcoff
, length
, dstoff
);
11489 r
= _do_read(c
.get(), oldo
, srcoff
, length
, bl
, 0);
11492 r
= _do_write(txc
, c
, newo
, dstoff
, bl
.length(), bl
, 0);
11498 txc
->write_onode(newo
);
11502 dout(10) << __func__
<< " " << c
->cid
<< " " << oldo
->oid
<< " -> "
11503 << newo
->oid
<< " from 0x" << std::hex
<< srcoff
<< "~" << length
11504 << " to offset 0x" << dstoff
<< std::dec
11505 << " = " << r
<< dendl
;
11509 int BlueStore::_rename(TransContext
*txc
,
11513 const ghobject_t
& new_oid
)
11515 dout(15) << __func__
<< " " << c
->cid
<< " " << oldo
->oid
<< " -> "
11516 << new_oid
<< dendl
;
11518 ghobject_t old_oid
= oldo
->oid
;
11519 mempool::bluestore_cache_other::string new_okey
;
11522 if (newo
->exists
) {
11526 assert(txc
->onodes
.count(newo
) == 0);
11529 txc
->t
->rmkey(PREFIX_OBJ
, oldo
->key
.c_str(), oldo
->key
.size());
11533 oldo
->extent_map
.fault_range(db
, 0, oldo
->onode
.size
);
11534 get_object_key(cct
, new_oid
, &new_okey
);
11536 for (auto &s
: oldo
->extent_map
.shards
) {
11537 generate_extent_shard_key_and_apply(oldo
->key
, s
.shard_info
->offset
, &key
,
11538 [&](const string
& final_key
) {
11539 txc
->t
->rmkey(PREFIX_OBJ
, final_key
);
11547 txc
->write_onode(newo
);
11549 // this adjusts oldo->{oid,key}, and reset oldo to a fresh empty
11550 // Onode in the old slot
11551 c
->onode_map
.rename(oldo
, old_oid
, new_oid
, new_okey
);
11555 dout(10) << __func__
<< " " << c
->cid
<< " " << old_oid
<< " -> "
11556 << new_oid
<< " = " << r
<< dendl
;
11562 int BlueStore::_create_collection(
11568 dout(15) << __func__
<< " " << cid
<< " bits " << bits
<< dendl
;
11573 RWLock::WLocker
l(coll_lock
);
11581 cache_shards
[cid
.hash_to_shard(cache_shards
.size())],
11583 (*c
)->cnode
.bits
= bits
;
11584 coll_map
[cid
] = *c
;
11586 ::encode((*c
)->cnode
, bl
);
11587 txc
->t
->set(PREFIX_COLL
, stringify(cid
), bl
);
11591 dout(10) << __func__
<< " " << cid
<< " bits " << bits
<< " = " << r
<< dendl
;
11595 int BlueStore::_remove_collection(TransContext
*txc
, const coll_t
&cid
,
11598 dout(15) << __func__
<< " " << cid
<< dendl
;
11602 RWLock::WLocker
l(coll_lock
);
11607 size_t nonexistent_count
= 0;
11608 assert((*c
)->exists
);
11609 if ((*c
)->onode_map
.map_any([&](OnodeRef o
) {
11611 dout(10) << __func__
<< " " << o
->oid
<< " " << o
11612 << " exists in onode_map" << dendl
;
11615 ++nonexistent_count
;
11622 vector
<ghobject_t
> ls
;
11624 // Enumerate onodes in db, up to nonexistent_count + 1
11625 // then check if all of them are marked as non-existent.
11626 // Bypass the check if returned number is greater than nonexistent_count
11627 r
= _collection_list(c
->get(), ghobject_t(), ghobject_t::get_max(),
11628 nonexistent_count
+ 1, &ls
, &next
);
11630 bool exists
= false; //ls.size() > nonexistent_count;
11631 for (auto it
= ls
.begin(); !exists
&& it
< ls
.end(); ++it
) {
11632 dout(10) << __func__
<< " oid " << *it
<< dendl
;
11633 auto onode
= (*c
)->onode_map
.lookup(*it
);
11634 exists
= !onode
|| onode
->exists
;
11636 dout(10) << __func__
<< " " << *it
11637 << " exists in db" << dendl
;
11641 coll_map
.erase(cid
);
11642 txc
->removed_collections
.push_back(*c
);
11643 (*c
)->exists
= false;
11645 txc
->t
->rmkey(PREFIX_COLL
, stringify(cid
));
11648 dout(10) << __func__
<< " " << cid
11649 << " is non-empty" << dendl
;
11656 dout(10) << __func__
<< " " << cid
<< " = " << r
<< dendl
;
11660 int BlueStore::_split_collection(TransContext
*txc
,
11663 unsigned bits
, int rem
)
11665 dout(15) << __func__
<< " " << c
->cid
<< " to " << d
->cid
<< " "
11666 << " bits " << bits
<< dendl
;
11667 RWLock::WLocker
l(c
->lock
);
11668 RWLock::WLocker
l2(d
->lock
);
11671 // flush all previous deferred writes on this sequencer. this is a bit
11672 // heavyweight, but we need to make sure all deferred writes complete
11673 // before we split as the new collection's sequencer may need to order
11674 // this after those writes, and we don't bother with the complexity of
11675 // moving those TransContexts over to the new osr.
11676 _osr_drain_preceding(txc
);
11678 // move any cached items (onodes and referenced shared blobs) that will
11679 // belong to the child collection post-split. leave everything else behind.
11680 // this may include things that don't strictly belong to the now-smaller
11681 // parent split, but the OSD will always send us a split for every new
11684 spg_t pgid
, dest_pgid
;
11685 bool is_pg
= c
->cid
.is_pg(&pgid
);
11687 is_pg
= d
->cid
.is_pg(&dest_pgid
);
11690 // the destination should initially be empty.
11691 assert(d
->onode_map
.empty());
11692 assert(d
->shared_blob_set
.empty());
11693 assert(d
->cnode
.bits
== bits
);
11695 c
->split_cache(d
.get());
11697 // adjust bits. note that this will be redundant for all but the first
11698 // split call for this parent (first child).
11699 c
->cnode
.bits
= bits
;
11700 assert(d
->cnode
.bits
== bits
);
11704 ::encode(c
->cnode
, bl
);
11705 txc
->t
->set(PREFIX_COLL
, stringify(c
->cid
), bl
);
11707 dout(10) << __func__
<< " " << c
->cid
<< " to " << d
->cid
<< " "
11708 << " bits " << bits
<< " = " << r
<< dendl
;
11712 // DB key value Histogram
11713 #define KEY_SLAB 32
11714 #define VALUE_SLAB 64
11716 const string prefix_onode
= "o";
11717 const string prefix_onode_shard
= "x";
11718 const string prefix_other
= "Z";
11720 int BlueStore::DBHistogram::get_key_slab(size_t sz
)
11722 return (sz
/KEY_SLAB
);
11725 string
BlueStore::DBHistogram::get_key_slab_to_range(int slab
)
11727 int lower_bound
= slab
* KEY_SLAB
;
11728 int upper_bound
= (slab
+ 1) * KEY_SLAB
;
11729 string ret
= "[" + stringify(lower_bound
) + "," + stringify(upper_bound
) + ")";
11733 int BlueStore::DBHistogram::get_value_slab(size_t sz
)
11735 return (sz
/VALUE_SLAB
);
11738 string
BlueStore::DBHistogram::get_value_slab_to_range(int slab
)
11740 int lower_bound
= slab
* VALUE_SLAB
;
11741 int upper_bound
= (slab
+ 1) * VALUE_SLAB
;
11742 string ret
= "[" + stringify(lower_bound
) + "," + stringify(upper_bound
) + ")";
11746 void BlueStore::DBHistogram::update_hist_entry(map
<string
, map
<int, struct key_dist
> > &key_hist
,
11747 const string
&prefix
, size_t key_size
, size_t value_size
)
11749 uint32_t key_slab
= get_key_slab(key_size
);
11750 uint32_t value_slab
= get_value_slab(value_size
);
11751 key_hist
[prefix
][key_slab
].count
++;
11752 key_hist
[prefix
][key_slab
].max_len
= MAX(key_size
, key_hist
[prefix
][key_slab
].max_len
);
11753 key_hist
[prefix
][key_slab
].val_map
[value_slab
].count
++;
11754 key_hist
[prefix
][key_slab
].val_map
[value_slab
].max_len
=
11755 MAX(value_size
, key_hist
[prefix
][key_slab
].val_map
[value_slab
].max_len
);
11758 void BlueStore::DBHistogram::dump(Formatter
*f
)
11760 f
->open_object_section("rocksdb_value_distribution");
11761 for (auto i
: value_hist
) {
11762 f
->dump_unsigned(get_value_slab_to_range(i
.first
).data(), i
.second
);
11764 f
->close_section();
11766 f
->open_object_section("rocksdb_key_value_histogram");
11767 for (auto i
: key_hist
) {
11768 f
->dump_string("prefix", i
.first
);
11769 f
->open_object_section("key_hist");
11770 for ( auto k
: i
.second
) {
11771 f
->dump_unsigned(get_key_slab_to_range(k
.first
).data(), k
.second
.count
);
11772 f
->dump_unsigned("max_len", k
.second
.max_len
);
11773 f
->open_object_section("value_hist");
11774 for ( auto j
: k
.second
.val_map
) {
11775 f
->dump_unsigned(get_value_slab_to_range(j
.first
).data(), j
.second
.count
);
11776 f
->dump_unsigned("max_len", j
.second
.max_len
);
11778 f
->close_section();
11780 f
->close_section();
11782 f
->close_section();
11785 //Itrerates through the db and collects the stats
11786 void BlueStore::generate_db_histogram(Formatter
*f
)
11789 uint64_t num_onodes
= 0;
11790 uint64_t num_shards
= 0;
11791 uint64_t num_super
= 0;
11792 uint64_t num_coll
= 0;
11793 uint64_t num_omap
= 0;
11794 uint64_t num_deferred
= 0;
11795 uint64_t num_alloc
= 0;
11796 uint64_t num_stat
= 0;
11797 uint64_t num_others
= 0;
11798 uint64_t num_shared_shards
= 0;
11799 size_t max_key_size
=0, max_value_size
= 0;
11800 uint64_t total_key_size
= 0, total_value_size
= 0;
11801 size_t key_size
= 0, value_size
= 0;
11804 utime_t start
= ceph_clock_now();
11806 KeyValueDB::WholeSpaceIterator iter
= db
->get_iterator();
11807 iter
->seek_to_first();
11808 while (iter
->valid()) {
11809 dout(30) << __func__
<< " Key: " << iter
->key() << dendl
;
11810 key_size
= iter
->key_size();
11811 value_size
= iter
->value_size();
11812 hist
.value_hist
[hist
.get_value_slab(value_size
)]++;
11813 max_key_size
= MAX(max_key_size
, key_size
);
11814 max_value_size
= MAX(max_value_size
, value_size
);
11815 total_key_size
+= key_size
;
11816 total_value_size
+= value_size
;
11818 pair
<string
,string
> key(iter
->raw_key());
11820 if (key
.first
== PREFIX_SUPER
) {
11821 hist
.update_hist_entry(hist
.key_hist
, PREFIX_SUPER
, key_size
, value_size
);
11823 } else if (key
.first
== PREFIX_STAT
) {
11824 hist
.update_hist_entry(hist
.key_hist
, PREFIX_STAT
, key_size
, value_size
);
11826 } else if (key
.first
== PREFIX_COLL
) {
11827 hist
.update_hist_entry(hist
.key_hist
, PREFIX_COLL
, key_size
, value_size
);
11829 } else if (key
.first
== PREFIX_OBJ
) {
11830 if (key
.second
.back() == ONODE_KEY_SUFFIX
) {
11831 hist
.update_hist_entry(hist
.key_hist
, prefix_onode
, key_size
, value_size
);
11834 hist
.update_hist_entry(hist
.key_hist
, prefix_onode_shard
, key_size
, value_size
);
11837 } else if (key
.first
== PREFIX_OMAP
) {
11838 hist
.update_hist_entry(hist
.key_hist
, PREFIX_OMAP
, key_size
, value_size
);
11840 } else if (key
.first
== PREFIX_DEFERRED
) {
11841 hist
.update_hist_entry(hist
.key_hist
, PREFIX_DEFERRED
, key_size
, value_size
);
11843 } else if (key
.first
== PREFIX_ALLOC
|| key
.first
== "b" ) {
11844 hist
.update_hist_entry(hist
.key_hist
, PREFIX_ALLOC
, key_size
, value_size
);
11846 } else if (key
.first
== PREFIX_SHARED_BLOB
) {
11847 hist
.update_hist_entry(hist
.key_hist
, PREFIX_SHARED_BLOB
, key_size
, value_size
);
11848 num_shared_shards
++;
11850 hist
.update_hist_entry(hist
.key_hist
, prefix_other
, key_size
, value_size
);
11856 utime_t duration
= ceph_clock_now() - start
;
11857 f
->open_object_section("rocksdb_key_value_stats");
11858 f
->dump_unsigned("num_onodes", num_onodes
);
11859 f
->dump_unsigned("num_shards", num_shards
);
11860 f
->dump_unsigned("num_super", num_super
);
11861 f
->dump_unsigned("num_coll", num_coll
);
11862 f
->dump_unsigned("num_omap", num_omap
);
11863 f
->dump_unsigned("num_deferred", num_deferred
);
11864 f
->dump_unsigned("num_alloc", num_alloc
);
11865 f
->dump_unsigned("num_stat", num_stat
);
11866 f
->dump_unsigned("num_shared_shards", num_shared_shards
);
11867 f
->dump_unsigned("num_others", num_others
);
11868 f
->dump_unsigned("max_key_size", max_key_size
);
11869 f
->dump_unsigned("max_value_size", max_value_size
);
11870 f
->dump_unsigned("total_key_size", total_key_size
);
11871 f
->dump_unsigned("total_value_size", total_value_size
);
11872 f
->close_section();
11876 dout(20) << __func__
<< " finished in " << duration
<< " seconds" << dendl
;
11880 void BlueStore::_flush_cache()
11882 dout(10) << __func__
<< dendl
;
11883 for (auto i
: cache_shards
) {
11885 assert(i
->empty());
11887 for (auto& p
: coll_map
) {
11888 if (!p
.second
->onode_map
.empty()) {
11889 derr
<< __func__
<< "stray onodes on " << p
.first
<< dendl
;
11890 p
.second
->onode_map
.dump(cct
, 0);
11892 if (!p
.second
->shared_blob_set
.empty()) {
11893 derr
<< __func__
<< " stray shared blobs on " << p
.first
<< dendl
;
11894 p
.second
->shared_blob_set
.dump(cct
, 0);
11896 assert(p
.second
->onode_map
.empty());
11897 assert(p
.second
->shared_blob_set
.empty());
11902 // For external caller.
11903 // We use a best-effort policy instead, e.g.,
11904 // we don't care if there are still some pinned onodes/data in the cache
11905 // after this command is completed.
11906 void BlueStore::flush_cache()
11908 dout(10) << __func__
<< dendl
;
11909 for (auto i
: cache_shards
) {
11914 void BlueStore::_apply_padding(uint64_t head_pad
,
11916 bufferlist
& padded
)
11919 padded
.prepend_zero(head_pad
);
11922 padded
.append_zero(tail_pad
);
11924 if (head_pad
|| tail_pad
) {
11925 dout(20) << __func__
<< " can pad head 0x" << std::hex
<< head_pad
11926 << " tail 0x" << tail_pad
<< std::dec
<< dendl
;
11927 logger
->inc(l_bluestore_write_pad_bytes
, head_pad
+ tail_pad
);
11931 // ===========================================