4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
26 * Copyright 2013 Saso Kiselkov. All rights reserved.
27 * Copyright (c) 2014 Integros [integros.com]
28 * Copyright 2017 Joyent, Inc.
29 * Copyright (c) 2017 Datto Inc.
36 #include <sys/zfs_context.h>
37 #include <sys/kstat.h>
38 #include <sys/nvpair.h>
39 #include <sys/sysmacros.h>
40 #include <sys/types.h>
41 #include <sys/fs/zfs.h>
42 #include <sys/spa_checksum.h>
50 * Forward references that lots of things need.
52 typedef struct spa spa_t
;
53 typedef struct vdev vdev_t
;
54 typedef struct metaslab metaslab_t
;
55 typedef struct metaslab_group metaslab_group_t
;
56 typedef struct metaslab_class metaslab_class_t
;
57 typedef struct zio zio_t
;
58 typedef struct zilog zilog_t
;
59 typedef struct spa_aux_vdev spa_aux_vdev_t
;
60 typedef struct ddt ddt_t
;
61 typedef struct ddt_entry ddt_entry_t
;
62 typedef struct zbookmark_phys zbookmark_phys_t
;
66 struct dsl_crypto_params
;
69 * General-purpose 32-bit and 64-bit bitfield encodings.
71 #define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len))
72 #define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len))
73 #define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low))
74 #define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low))
76 #define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
77 #define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
79 #define BF32_SET(x, low, len, val) do { \
80 ASSERT3U(val, <, 1U << (len)); \
81 ASSERT3U(low + len, <=, 32); \
82 (x) ^= BF32_ENCODE((x >> low) ^ (val), low, len); \
83 _NOTE(CONSTCOND) } while (0)
85 #define BF64_SET(x, low, len, val) do { \
86 ASSERT3U(val, <, 1ULL << (len)); \
87 ASSERT3U(low + len, <=, 64); \
88 ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)); \
89 _NOTE(CONSTCOND) } while (0)
91 #define BF32_GET_SB(x, low, len, shift, bias) \
92 ((BF32_GET(x, low, len) + (bias)) << (shift))
93 #define BF64_GET_SB(x, low, len, shift, bias) \
94 ((BF64_GET(x, low, len) + (bias)) << (shift))
96 #define BF32_SET_SB(x, low, len, shift, bias, val) do { \
97 ASSERT(IS_P2ALIGNED(val, 1U << shift)); \
98 ASSERT3S((val) >> (shift), >=, bias); \
99 BF32_SET(x, low, len, ((val) >> (shift)) - (bias)); \
100 _NOTE(CONSTCOND) } while (0)
101 #define BF64_SET_SB(x, low, len, shift, bias, val) do { \
102 ASSERT(IS_P2ALIGNED(val, 1ULL << shift)); \
103 ASSERT3S((val) >> (shift), >=, bias); \
104 BF64_SET(x, low, len, ((val) >> (shift)) - (bias)); \
105 _NOTE(CONSTCOND) } while (0)
108 * We currently support block sizes from 512 bytes to 16MB.
109 * The benefits of larger blocks, and thus larger IO, need to be weighed
110 * against the cost of COWing a giant block to modify one byte, and the
111 * large latency of reading or writing a large block.
113 * Note that although blocks up to 16MB are supported, the recordsize
114 * property can not be set larger than zfs_max_recordsize (default 1MB).
115 * See the comment near zfs_max_recordsize in dsl_dataset.c for details.
117 * Note that although the LSIZE field of the blkptr_t can store sizes up
118 * to 32MB, the dnode's dn_datablkszsec can only store sizes up to
119 * 32MB - 512 bytes. Therefore, we limit SPA_MAXBLOCKSIZE to 16MB.
121 #define SPA_MINBLOCKSHIFT 9
122 #define SPA_OLD_MAXBLOCKSHIFT 17
123 #define SPA_MAXBLOCKSHIFT 24
124 #define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT)
125 #define SPA_OLD_MAXBLOCKSIZE (1ULL << SPA_OLD_MAXBLOCKSHIFT)
126 #define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT)
129 * Alignment Shift (ashift) is an immutable, internal top-level vdev property
130 * which can only be set at vdev creation time. Physical writes are always done
131 * according to it, which makes 2^ashift the smallest possible IO on a vdev.
133 * We currently allow values ranging from 512 bytes (2^9 = 512) to 64 KiB
137 #define ASHIFT_MAX 16
140 * Size of block to hold the configuration data (a packed nvlist)
142 #define SPA_CONFIG_BLOCKSIZE (1ULL << 14)
145 * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
146 * The ASIZE encoding should be at least 64 times larger (6 more bits)
147 * to support up to 4-way RAID-Z mirror mode with worst-case gang block
148 * overhead, three DVAs per bp, plus one more bit in case we do anything
149 * else that expands the ASIZE.
151 #define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */
152 #define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */
153 #define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */
155 #define SPA_COMPRESSBITS 7
158 * All SPA data is represented by 128-bit data virtual addresses (DVAs).
159 * The members of the dva_t should be considered opaque outside the SPA.
162 uint64_t dva_word
[2];
167 * Some checksums/hashes need a 256-bit initialization salt. This salt is kept
168 * secret and is suitable for use in MAC algorithms as the key.
170 typedef struct zio_cksum_salt
{
171 uint8_t zcs_bytes
[32];
175 * Each block is described by its DVAs, time of birth, checksum, etc.
176 * The word-by-word, bit-by-bit layout of the blkptr is as follows:
178 * 64 56 48 40 32 24 16 8 0
179 * +-------+-------+-------+-------+-------+-------+-------+-------+
180 * 0 | vdev1 | GRID | ASIZE |
181 * +-------+-------+-------+-------+-------+-------+-------+-------+
183 * +-------+-------+-------+-------+-------+-------+-------+-------+
184 * 2 | vdev2 | GRID | ASIZE |
185 * +-------+-------+-------+-------+-------+-------+-------+-------+
187 * +-------+-------+-------+-------+-------+-------+-------+-------+
188 * 4 | vdev3 | GRID | ASIZE |
189 * +-------+-------+-------+-------+-------+-------+-------+-------+
191 * +-------+-------+-------+-------+-------+-------+-------+-------+
192 * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE |
193 * +-------+-------+-------+-------+-------+-------+-------+-------+
195 * +-------+-------+-------+-------+-------+-------+-------+-------+
197 * +-------+-------+-------+-------+-------+-------+-------+-------+
198 * 9 | physical birth txg |
199 * +-------+-------+-------+-------+-------+-------+-------+-------+
200 * a | logical birth txg |
201 * +-------+-------+-------+-------+-------+-------+-------+-------+
203 * +-------+-------+-------+-------+-------+-------+-------+-------+
205 * +-------+-------+-------+-------+-------+-------+-------+-------+
207 * +-------+-------+-------+-------+-------+-------+-------+-------+
209 * +-------+-------+-------+-------+-------+-------+-------+-------+
211 * +-------+-------+-------+-------+-------+-------+-------+-------+
215 * vdev virtual device ID
216 * offset offset into virtual device
218 * PSIZE physical size (after compression)
219 * ASIZE allocated size (including RAID-Z parity and gang block headers)
220 * GRID RAID-Z layout information (reserved for future use)
221 * cksum checksum function
222 * comp compression function
223 * G gang block indicator
224 * B byteorder (endianness)
227 * E blkptr_t contains embedded data (see below)
228 * lvl level of indirection
229 * type DMU object type
230 * phys birth txg when dva[0] was written; zero if same as logical birth txg
231 * note that typically all the dva's would be written in this
232 * txg, but they could be different if they were moved by
234 * log. birth transaction group in which the block was logically born
235 * fill count number of non-zero blocks under this bp
236 * checksum[4] 256-bit checksum of the data this bp describes
240 * The blkptr_t's of encrypted blocks also need to store the encryption
241 * parameters so that the block can be decrypted. This layout is as follows:
243 * 64 56 48 40 32 24 16 8 0
244 * +-------+-------+-------+-------+-------+-------+-------+-------+
245 * 0 | vdev1 | GRID | ASIZE |
246 * +-------+-------+-------+-------+-------+-------+-------+-------+
248 * +-------+-------+-------+-------+-------+-------+-------+-------+
249 * 2 | vdev2 | GRID | ASIZE |
250 * +-------+-------+-------+-------+-------+-------+-------+-------+
252 * +-------+-------+-------+-------+-------+-------+-------+-------+
254 * +-------+-------+-------+-------+-------+-------+-------+-------+
256 * +-------+-------+-------+-------+-------+-------+-------+-------+
257 * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE |
258 * +-------+-------+-------+-------+-------+-------+-------+-------+
260 * +-------+-------+-------+-------+-------+-------+-------+-------+
262 * +-------+-------+-------+-------+-------+-------+-------+-------+
263 * 9 | physical birth txg |
264 * +-------+-------+-------+-------+-------+-------+-------+-------+
265 * a | logical birth txg |
266 * +-------+-------+-------+-------+-------+-------+-------+-------+
267 * b | IV2 | fill count |
268 * +-------+-------+-------+-------+-------+-------+-------+-------+
270 * +-------+-------+-------+-------+-------+-------+-------+-------+
272 * +-------+-------+-------+-------+-------+-------+-------+-------+
274 * +-------+-------+-------+-------+-------+-------+-------+-------+
276 * +-------+-------+-------+-------+-------+-------+-------+-------+
280 * salt Salt for generating encryption keys
281 * IV1 First 64 bits of encryption IV
282 * X Block requires encryption handling (set to 1)
283 * E blkptr_t contains embedded data (set to 0, see below)
284 * fill count number of non-zero blocks under this bp (truncated to 32 bits)
285 * IV2 Last 32 bits of encryption IV
286 * checksum[2] 128-bit checksum of the data this bp describes
287 * MAC[2] 128-bit message authentication code for this data
289 * The X bit being set indicates that this block is one of 3 types. If this is
290 * a level 0 block with an encrypted object type, the block is encrypted
291 * (see BP_IS_ENCRYPTED()). If this is a level 0 block with an unencrypted
292 * object type, this block is authenticated with an HMAC (see
293 * BP_IS_AUTHENTICATED()). Otherwise (if level > 0), this bp will use the MAC
294 * words to store a checksum-of-MACs from the level below (see
295 * BP_HAS_INDIRECT_MAC_CKSUM()). For convenience in the code, BP_IS_PROTECTED()
296 * refers to both encrypted and authenticated blocks and BP_USES_CRYPT()
297 * refers to any of these 3 kinds of blocks.
299 * The additional encryption parameters are the salt, IV, and MAC which are
300 * explained in greater detail in the block comment at the top of zio_crypt.c.
301 * The MAC occupies half of the checksum space since it serves a very similar
302 * purpose: to prevent data corruption on disk. The only functional difference
303 * is that the checksum is used to detect on-disk corruption whether or not the
304 * encryption key is loaded and the MAC provides additional protection against
305 * malicious disk tampering. We use the 3rd DVA to store the salt and first
306 * 64 bits of the IV. As a result encrypted blocks can only have 2 copies
307 * maximum instead of the normal 3. The last 32 bits of the IV are stored in
308 * the upper bits of what is usually the fill count. Note that only blocks at
309 * level 0 or -2 are ever encrypted, which allows us to guarantee that these
310 * 32 bits are not trampled over by other code (see zio_crypt.c for details).
311 * The salt and IV are not used for authenticated bps or bps with an indirect
312 * MAC checksum, so these blocks can utilize all 3 DVAs and the full 64 bits
313 * for the fill count.
317 * "Embedded" blkptr_t's don't actually point to a block, instead they
318 * have a data payload embedded in the blkptr_t itself. See the comment
319 * in blkptr.c for more details.
321 * The blkptr_t is laid out as follows:
323 * 64 56 48 40 32 24 16 8 0
324 * +-------+-------+-------+-------+-------+-------+-------+-------+
331 * +-------+-------+-------+-------+-------+-------+-------+-------+
332 * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE |
333 * +-------+-------+-------+-------+-------+-------+-------+-------+
337 * +-------+-------+-------+-------+-------+-------+-------+-------+
338 * a | logical birth txg |
339 * +-------+-------+-------+-------+-------+-------+-------+-------+
345 * +-------+-------+-------+-------+-------+-------+-------+-------+
349 * payload contains the embedded data
350 * B (byteorder) byteorder (endianness)
351 * D (dedup) padding (set to zero)
352 * X encryption (set to zero)
353 * E (embedded) set to one
354 * lvl indirection level
355 * type DMU object type
356 * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*)
357 * comp compression function of payload
358 * PSIZE size of payload after compression, in bytes
359 * LSIZE logical size of payload, in bytes
360 * note that 25 bits is enough to store the largest
361 * "normal" BP's LSIZE (2^16 * 2^9) in bytes
362 * log. birth transaction group in which the block was logically born
364 * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded
365 * bp's they are stored in units of SPA_MINBLOCKSHIFT.
366 * Generally, the generic BP_GET_*() macros can be used on embedded BP's.
367 * The B, D, X, lvl, type, and comp fields are stored the same as with normal
368 * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must
369 * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before
370 * other macros, as they assert that they are only used on BP's of the correct
371 * "embedded-ness". Encrypted blkptr_t's cannot be embedded because they use
372 * the payload space for encryption parameters (see the comment above on
373 * how encryption parameters are stored).
376 #define BPE_GET_ETYPE(bp) \
377 (ASSERT(BP_IS_EMBEDDED(bp)), \
378 BF64_GET((bp)->blk_prop, 40, 8))
379 #define BPE_SET_ETYPE(bp, t) do { \
380 ASSERT(BP_IS_EMBEDDED(bp)); \
381 BF64_SET((bp)->blk_prop, 40, 8, t); \
382 _NOTE(CONSTCOND) } while (0)
384 #define BPE_GET_LSIZE(bp) \
385 (ASSERT(BP_IS_EMBEDDED(bp)), \
386 BF64_GET_SB((bp)->blk_prop, 0, 25, 0, 1))
387 #define BPE_SET_LSIZE(bp, x) do { \
388 ASSERT(BP_IS_EMBEDDED(bp)); \
389 BF64_SET_SB((bp)->blk_prop, 0, 25, 0, 1, x); \
390 _NOTE(CONSTCOND) } while (0)
392 #define BPE_GET_PSIZE(bp) \
393 (ASSERT(BP_IS_EMBEDDED(bp)), \
394 BF64_GET_SB((bp)->blk_prop, 25, 7, 0, 1))
395 #define BPE_SET_PSIZE(bp, x) do { \
396 ASSERT(BP_IS_EMBEDDED(bp)); \
397 BF64_SET_SB((bp)->blk_prop, 25, 7, 0, 1, x); \
398 _NOTE(CONSTCOND) } while (0)
400 typedef enum bp_embedded_type
{
401 BP_EMBEDDED_TYPE_DATA
,
402 BP_EMBEDDED_TYPE_RESERVED
, /* Reserved for an unintegrated feature. */
403 NUM_BP_EMBEDDED_TYPES
= BP_EMBEDDED_TYPE_RESERVED
404 } bp_embedded_type_t
;
406 #define BPE_NUM_WORDS 14
407 #define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t))
408 #define BPE_IS_PAYLOADWORD(bp, wp) \
409 ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth)
411 #define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
412 #define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
415 * A block is a hole when it has either 1) never been written to, or
416 * 2) is zero-filled. In both cases, ZFS can return all zeroes for all reads
417 * without physically allocating disk space. Holes are represented in the
418 * blkptr_t structure by zeroed blk_dva. Correct checking for holes is
419 * done through the BP_IS_HOLE macro. For holes, the logical size, level,
420 * DMU object type, and birth times are all also stored for holes that
421 * were written to at some point (i.e. were punched after having been filled).
423 typedef struct blkptr
{
424 dva_t blk_dva
[SPA_DVAS_PER_BP
]; /* Data Virtual Addresses */
425 uint64_t blk_prop
; /* size, compression, type, etc */
426 uint64_t blk_pad
[2]; /* Extra space for the future */
427 uint64_t blk_phys_birth
; /* txg when block was allocated */
428 uint64_t blk_birth
; /* transaction group at birth */
429 uint64_t blk_fill
; /* fill count */
430 zio_cksum_t blk_cksum
; /* 256-bit checksum */
434 * Macros to get and set fields in a bp or DVA.
436 #define DVA_GET_ASIZE(dva) \
437 BF64_GET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, SPA_MINBLOCKSHIFT, 0)
438 #define DVA_SET_ASIZE(dva, x) \
439 BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \
440 SPA_MINBLOCKSHIFT, 0, x)
442 #define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8)
443 #define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x)
445 #define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32)
446 #define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x)
448 #define DVA_GET_OFFSET(dva) \
449 BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0)
450 #define DVA_SET_OFFSET(dva, x) \
451 BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x)
453 #define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1)
454 #define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
456 #define BP_GET_LSIZE(bp) \
457 (BP_IS_EMBEDDED(bp) ? \
458 (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \
459 BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1))
460 #define BP_SET_LSIZE(bp, x) do { \
461 ASSERT(!BP_IS_EMBEDDED(bp)); \
462 BF64_SET_SB((bp)->blk_prop, \
463 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
464 _NOTE(CONSTCOND) } while (0)
466 #define BP_GET_PSIZE(bp) \
467 (BP_IS_EMBEDDED(bp) ? 0 : \
468 BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1))
469 #define BP_SET_PSIZE(bp, x) do { \
470 ASSERT(!BP_IS_EMBEDDED(bp)); \
471 BF64_SET_SB((bp)->blk_prop, \
472 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
473 _NOTE(CONSTCOND) } while (0)
475 #define BP_GET_COMPRESS(bp) \
476 BF64_GET((bp)->blk_prop, 32, SPA_COMPRESSBITS)
477 #define BP_SET_COMPRESS(bp, x) \
478 BF64_SET((bp)->blk_prop, 32, SPA_COMPRESSBITS, x)
480 #define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1)
481 #define BP_SET_EMBEDDED(bp, x) BF64_SET((bp)->blk_prop, 39, 1, x)
483 #define BP_GET_CHECKSUM(bp) \
484 (BP_IS_EMBEDDED(bp) ? ZIO_CHECKSUM_OFF : \
485 BF64_GET((bp)->blk_prop, 40, 8))
486 #define BP_SET_CHECKSUM(bp, x) do { \
487 ASSERT(!BP_IS_EMBEDDED(bp)); \
488 BF64_SET((bp)->blk_prop, 40, 8, x); \
489 _NOTE(CONSTCOND) } while (0)
491 #define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
492 #define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
494 #define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
495 #define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
497 /* encrypted, authenticated, and MAC cksum bps use the same bit */
498 #define BP_USES_CRYPT(bp) BF64_GET((bp)->blk_prop, 61, 1)
499 #define BP_SET_CRYPT(bp, x) BF64_SET((bp)->blk_prop, 61, 1, x)
501 #define BP_IS_ENCRYPTED(bp) \
502 (BP_USES_CRYPT(bp) && \
503 BP_GET_LEVEL(bp) <= 0 && \
504 DMU_OT_IS_ENCRYPTED(BP_GET_TYPE(bp)))
506 #define BP_IS_AUTHENTICATED(bp) \
507 (BP_USES_CRYPT(bp) && \
508 BP_GET_LEVEL(bp) <= 0 && \
509 !DMU_OT_IS_ENCRYPTED(BP_GET_TYPE(bp)))
511 #define BP_HAS_INDIRECT_MAC_CKSUM(bp) \
512 (BP_USES_CRYPT(bp) && BP_GET_LEVEL(bp) > 0)
514 #define BP_IS_PROTECTED(bp) \
515 (BP_IS_ENCRYPTED(bp) || BP_IS_AUTHENTICATED(bp))
517 #define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1)
518 #define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x)
520 #define BP_GET_BYTEORDER(bp) BF64_GET((bp)->blk_prop, 63, 1)
521 #define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
523 #define BP_PHYSICAL_BIRTH(bp) \
524 (BP_IS_EMBEDDED(bp) ? 0 : \
525 (bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
527 #define BP_SET_BIRTH(bp, logical, physical) \
529 ASSERT(!BP_IS_EMBEDDED(bp)); \
530 (bp)->blk_birth = (logical); \
531 (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
534 #define BP_GET_FILL(bp) \
535 ((BP_IS_ENCRYPTED(bp)) ? BF64_GET((bp)->blk_fill, 0, 32) : \
536 ((BP_IS_EMBEDDED(bp)) ? 1 : (bp)->blk_fill))
538 #define BP_SET_FILL(bp, fill) \
540 if (BP_IS_ENCRYPTED(bp)) \
541 BF64_SET((bp)->blk_fill, 0, 32, fill); \
543 (bp)->blk_fill = fill; \
546 #define BP_GET_IV2(bp) \
547 (ASSERT(BP_IS_ENCRYPTED(bp)), \
548 BF64_GET((bp)->blk_fill, 32, 32))
549 #define BP_SET_IV2(bp, iv2) \
551 ASSERT(BP_IS_ENCRYPTED(bp)); \
552 BF64_SET((bp)->blk_fill, 32, 32, iv2); \
555 #define BP_IS_METADATA(bp) \
556 (BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
558 #define BP_GET_ASIZE(bp) \
559 (BP_IS_EMBEDDED(bp) ? 0 : \
560 DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
561 DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
562 (DVA_GET_ASIZE(&(bp)->blk_dva[2]) * !BP_IS_ENCRYPTED(bp)))
564 #define BP_GET_UCSIZE(bp) \
565 (BP_IS_METADATA(bp) ? BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp))
567 #define BP_GET_NDVAS(bp) \
568 (BP_IS_EMBEDDED(bp) ? 0 : \
569 !!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
570 !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
571 (!!DVA_GET_ASIZE(&(bp)->blk_dva[2]) * !BP_IS_ENCRYPTED(bp)))
573 #define BP_COUNT_GANG(bp) \
574 (BP_IS_EMBEDDED(bp) ? 0 : \
575 (DVA_GET_GANG(&(bp)->blk_dva[0]) + \
576 DVA_GET_GANG(&(bp)->blk_dva[1]) + \
577 (DVA_GET_GANG(&(bp)->blk_dva[2]) * !BP_IS_ENCRYPTED(bp))))
579 #define DVA_EQUAL(dva1, dva2) \
580 ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
581 (dva1)->dva_word[0] == (dva2)->dva_word[0])
583 #define BP_EQUAL(bp1, bp2) \
584 (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \
585 (bp1)->blk_birth == (bp2)->blk_birth && \
586 DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \
587 DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \
588 DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2]))
591 #define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0)
593 #define BP_IDENTITY(bp) (ASSERT(!BP_IS_EMBEDDED(bp)), &(bp)->blk_dva[0])
594 #define BP_IS_GANG(bp) \
595 (BP_IS_EMBEDDED(bp) ? B_FALSE : DVA_GET_GANG(BP_IDENTITY(bp)))
596 #define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \
597 (dva)->dva_word[1] == 0ULL)
598 #define BP_IS_HOLE(bp) \
599 (!BP_IS_EMBEDDED(bp) && DVA_IS_EMPTY(BP_IDENTITY(bp)))
601 /* BP_IS_RAIDZ(bp) assumes no block compression */
602 #define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \
605 #define BP_ZERO(bp) \
607 (bp)->blk_dva[0].dva_word[0] = 0; \
608 (bp)->blk_dva[0].dva_word[1] = 0; \
609 (bp)->blk_dva[1].dva_word[0] = 0; \
610 (bp)->blk_dva[1].dva_word[1] = 0; \
611 (bp)->blk_dva[2].dva_word[0] = 0; \
612 (bp)->blk_dva[2].dva_word[1] = 0; \
613 (bp)->blk_prop = 0; \
614 (bp)->blk_pad[0] = 0; \
615 (bp)->blk_pad[1] = 0; \
616 (bp)->blk_phys_birth = 0; \
617 (bp)->blk_birth = 0; \
618 (bp)->blk_fill = 0; \
619 ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \
623 #define ZFS_HOST_BYTEORDER (0ULL)
625 #define ZFS_HOST_BYTEORDER (1ULL)
628 #define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER)
630 #define BP_SPRINTF_LEN 400
633 * This macro allows code sharing between zfs, libzpool, and mdb.
634 * 'func' is either snprintf() or mdb_snprintf().
635 * 'ws' (whitespace) can be ' ' for single-line format, '\n' for multi-line.
637 #define SNPRINTF_BLKPTR(func, ws, buf, size, bp, type, checksum, compress) \
639 static const char *copyname[] = \
640 { "zero", "single", "double", "triple" }; \
643 const char *crypt_type; \
645 if (BP_IS_ENCRYPTED(bp)) { \
646 crypt_type = "encrypted"; \
647 /* LINTED E_SUSPICIOUS_COMPARISON */ \
648 } else if (BP_IS_AUTHENTICATED(bp)) { \
649 crypt_type = "authenticated"; \
650 } else if (BP_HAS_INDIRECT_MAC_CKSUM(bp)) { \
651 crypt_type = "indirect-MAC"; \
653 crypt_type = "unencrypted"; \
657 len += func(buf + len, size - len, "<NULL>"); \
658 } else if (BP_IS_HOLE(bp)) { \
659 len += func(buf + len, size - len, \
661 "size=%llxL birth=%lluL", \
662 (u_longlong_t)BP_GET_LEVEL(bp), \
664 (u_longlong_t)BP_GET_LSIZE(bp), \
665 (u_longlong_t)bp->blk_birth); \
666 } else if (BP_IS_EMBEDDED(bp)) { \
667 len = func(buf + len, size - len, \
668 "EMBEDDED [L%llu %s] et=%u %s " \
669 "size=%llxL/%llxP birth=%lluL", \
670 (u_longlong_t)BP_GET_LEVEL(bp), \
672 (int)BPE_GET_ETYPE(bp), \
674 (u_longlong_t)BPE_GET_LSIZE(bp), \
675 (u_longlong_t)BPE_GET_PSIZE(bp), \
676 (u_longlong_t)bp->blk_birth); \
678 for (int d = 0; d < BP_GET_NDVAS(bp); d++) { \
679 const dva_t *dva = &bp->blk_dva[d]; \
680 if (DVA_IS_VALID(dva)) \
682 len += func(buf + len, size - len, \
683 "DVA[%d]=<%llu:%llx:%llx>%c", d, \
684 (u_longlong_t)DVA_GET_VDEV(dva), \
685 (u_longlong_t)DVA_GET_OFFSET(dva), \
686 (u_longlong_t)DVA_GET_ASIZE(dva), \
689 if (BP_IS_ENCRYPTED(bp)) { \
690 len += func(buf + len, size - len, \
691 "salt=%llx iv=%llx:%llx%c", \
692 (u_longlong_t)bp->blk_dva[2].dva_word[0], \
693 (u_longlong_t)bp->blk_dva[2].dva_word[1], \
694 (u_longlong_t)BP_GET_IV2(bp), \
697 if (BP_IS_GANG(bp) && \
698 DVA_GET_ASIZE(&bp->blk_dva[2]) <= \
699 DVA_GET_ASIZE(&bp->blk_dva[1]) / 2) \
701 len += func(buf + len, size - len, \
702 "[L%llu %s] %s %s %s %s %s %s %s%c" \
703 "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \
704 "cksum=%llx:%llx:%llx:%llx", \
705 (u_longlong_t)BP_GET_LEVEL(bp), \
710 BP_GET_BYTEORDER(bp) == 0 ? "BE" : "LE", \
711 BP_IS_GANG(bp) ? "gang" : "contiguous", \
712 BP_GET_DEDUP(bp) ? "dedup" : "unique", \
715 (u_longlong_t)BP_GET_LSIZE(bp), \
716 (u_longlong_t)BP_GET_PSIZE(bp), \
717 (u_longlong_t)bp->blk_birth, \
718 (u_longlong_t)BP_PHYSICAL_BIRTH(bp), \
719 (u_longlong_t)BP_GET_FILL(bp), \
721 (u_longlong_t)bp->blk_cksum.zc_word[0], \
722 (u_longlong_t)bp->blk_cksum.zc_word[1], \
723 (u_longlong_t)bp->blk_cksum.zc_word[2], \
724 (u_longlong_t)bp->blk_cksum.zc_word[3]); \
726 ASSERT(len < size); \
729 #define BP_GET_BUFC_TYPE(bp) \
730 (BP_IS_METADATA(bp) ? ARC_BUFC_METADATA : ARC_BUFC_DATA)
732 typedef enum spa_import_type
{
737 /* state manipulation functions */
738 extern int spa_open(const char *pool
, spa_t
**, void *tag
);
739 extern int spa_open_rewind(const char *pool
, spa_t
**, void *tag
,
740 nvlist_t
*policy
, nvlist_t
**config
);
741 extern int spa_get_stats(const char *pool
, nvlist_t
**config
, char *altroot
,
743 extern int spa_create(const char *pool
, nvlist_t
*nvroot
, nvlist_t
*props
,
744 nvlist_t
*zplprops
, struct dsl_crypto_params
*dcp
);
745 extern int spa_import(char *pool
, nvlist_t
*config
, nvlist_t
*props
,
747 extern nvlist_t
*spa_tryimport(nvlist_t
*tryconfig
);
748 extern int spa_destroy(char *pool
);
749 extern int spa_export(char *pool
, nvlist_t
**oldconfig
, boolean_t force
,
750 boolean_t hardforce
);
751 extern int spa_reset(char *pool
);
752 extern void spa_async_request(spa_t
*spa
, int flag
);
753 extern void spa_async_unrequest(spa_t
*spa
, int flag
);
754 extern void spa_async_suspend(spa_t
*spa
);
755 extern void spa_async_resume(spa_t
*spa
);
756 extern spa_t
*spa_inject_addref(char *pool
);
757 extern void spa_inject_delref(spa_t
*spa
);
758 extern void spa_scan_stat_init(spa_t
*spa
);
759 extern int spa_scan_get_stats(spa_t
*spa
, pool_scan_stat_t
*ps
);
761 #define SPA_ASYNC_CONFIG_UPDATE 0x01
762 #define SPA_ASYNC_REMOVE 0x02
763 #define SPA_ASYNC_PROBE 0x04
764 #define SPA_ASYNC_RESILVER_DONE 0x08
765 #define SPA_ASYNC_RESILVER 0x10
766 #define SPA_ASYNC_AUTOEXPAND 0x20
767 #define SPA_ASYNC_REMOVE_DONE 0x40
768 #define SPA_ASYNC_REMOVE_STOP 0x80
771 * Controls the behavior of spa_vdev_remove().
773 #define SPA_REMOVE_UNSPARE 0x01
774 #define SPA_REMOVE_DONE 0x02
776 /* device manipulation */
777 extern int spa_vdev_add(spa_t
*spa
, nvlist_t
*nvroot
);
778 extern int spa_vdev_attach(spa_t
*spa
, uint64_t guid
, nvlist_t
*nvroot
,
780 extern int spa_vdev_detach(spa_t
*spa
, uint64_t guid
, uint64_t pguid
,
782 extern int spa_vdev_remove(spa_t
*spa
, uint64_t guid
, boolean_t unspare
);
783 extern boolean_t
spa_vdev_remove_active(spa_t
*spa
);
784 extern int spa_vdev_setpath(spa_t
*spa
, uint64_t guid
, const char *newpath
);
785 extern int spa_vdev_setfru(spa_t
*spa
, uint64_t guid
, const char *newfru
);
786 extern int spa_vdev_split_mirror(spa_t
*spa
, char *newname
, nvlist_t
*config
,
787 nvlist_t
*props
, boolean_t exp
);
789 /* spare state (which is global across all pools) */
790 extern void spa_spare_add(vdev_t
*vd
);
791 extern void spa_spare_remove(vdev_t
*vd
);
792 extern boolean_t
spa_spare_exists(uint64_t guid
, uint64_t *pool
, int *refcnt
);
793 extern void spa_spare_activate(vdev_t
*vd
);
795 /* L2ARC state (which is global across all pools) */
796 extern void spa_l2cache_add(vdev_t
*vd
);
797 extern void spa_l2cache_remove(vdev_t
*vd
);
798 extern boolean_t
spa_l2cache_exists(uint64_t guid
, uint64_t *pool
);
799 extern void spa_l2cache_activate(vdev_t
*vd
);
800 extern void spa_l2cache_drop(spa_t
*spa
);
803 extern int spa_scan(spa_t
*spa
, pool_scan_func_t func
);
804 extern int spa_scan_stop(spa_t
*spa
);
805 extern int spa_scrub_pause_resume(spa_t
*spa
, pool_scrub_cmd_t flag
);
808 extern void spa_sync(spa_t
*spa
, uint64_t txg
); /* only for DMU use */
809 extern void spa_sync_allpools(void);
811 extern int zfs_sync_pass_deferred_free
;
813 /* spa namespace global mutex */
814 extern kmutex_t spa_namespace_lock
;
817 * SPA configuration functions in spa_config.c
820 #define SPA_CONFIG_UPDATE_POOL 0
821 #define SPA_CONFIG_UPDATE_VDEVS 1
823 extern void spa_write_cachefile(spa_t
*, boolean_t
, boolean_t
);
824 extern void spa_config_load(void);
825 extern nvlist_t
*spa_all_configs(uint64_t *);
826 extern void spa_config_set(spa_t
*spa
, nvlist_t
*config
);
827 extern nvlist_t
*spa_config_generate(spa_t
*spa
, vdev_t
*vd
, uint64_t txg
,
829 extern void spa_config_update(spa_t
*spa
, int what
);
832 * Miscellaneous SPA routines in spa_misc.c
835 /* Namespace manipulation */
836 extern spa_t
*spa_lookup(const char *name
);
837 extern spa_t
*spa_add(const char *name
, nvlist_t
*config
, const char *altroot
);
838 extern void spa_remove(spa_t
*spa
);
839 extern spa_t
*spa_next(spa_t
*prev
);
841 /* Refcount functions */
842 extern void spa_open_ref(spa_t
*spa
, void *tag
);
843 extern void spa_close(spa_t
*spa
, void *tag
);
844 extern void spa_async_close(spa_t
*spa
, void *tag
);
845 extern boolean_t
spa_refcount_zero(spa_t
*spa
);
847 #define SCL_NONE 0x00
848 #define SCL_CONFIG 0x01
849 #define SCL_STATE 0x02
850 #define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */
851 #define SCL_ALLOC 0x08
853 #define SCL_FREE 0x20
854 #define SCL_VDEV 0x40
856 #define SCL_ALL ((1 << SCL_LOCKS) - 1)
857 #define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO)
859 /* Historical pool statistics */
860 typedef struct spa_stats_history
{
867 } spa_stats_history_t
;
869 typedef struct spa_stats
{
870 spa_stats_history_t read_history
;
871 spa_stats_history_t txg_history
;
872 spa_stats_history_t tx_assign_histogram
;
873 spa_stats_history_t io_history
;
874 spa_stats_history_t mmp_history
;
877 typedef enum txg_state
{
880 TXG_STATE_QUIESCED
= 2,
881 TXG_STATE_WAIT_FOR_SYNC
= 3,
882 TXG_STATE_SYNCED
= 4,
883 TXG_STATE_COMMITTED
= 5,
886 typedef struct txg_stat
{
893 extern void spa_stats_init(spa_t
*spa
);
894 extern void spa_stats_destroy(spa_t
*spa
);
895 extern void spa_read_history_add(spa_t
*spa
, const zbookmark_phys_t
*zb
,
897 extern void spa_txg_history_add(spa_t
*spa
, uint64_t txg
, hrtime_t birth_time
);
898 extern int spa_txg_history_set(spa_t
*spa
, uint64_t txg
,
899 txg_state_t completed_state
, hrtime_t completed_time
);
900 extern txg_stat_t
*spa_txg_history_init_io(spa_t
*, uint64_t,
902 extern void spa_txg_history_fini_io(spa_t
*, txg_stat_t
*);
903 extern void spa_tx_assign_add_nsecs(spa_t
*spa
, uint64_t nsecs
);
904 extern int spa_mmp_history_set_skip(spa_t
*spa
, uint64_t mmp_kstat_id
);
905 extern int spa_mmp_history_set(spa_t
*spa
, uint64_t mmp_kstat_id
, int io_error
,
907 extern void *spa_mmp_history_add(spa_t
*spa
, uint64_t txg
, uint64_t timestamp
,
908 uint64_t mmp_delay
, vdev_t
*vd
, int label
, uint64_t mmp_kstat_id
,
911 /* Pool configuration locks */
912 extern int spa_config_tryenter(spa_t
*spa
, int locks
, void *tag
, krw_t rw
);
913 extern void spa_config_enter(spa_t
*spa
, int locks
, void *tag
, krw_t rw
);
914 extern void spa_config_exit(spa_t
*spa
, int locks
, void *tag
);
915 extern int spa_config_held(spa_t
*spa
, int locks
, krw_t rw
);
917 /* Pool vdev add/remove lock */
918 extern uint64_t spa_vdev_enter(spa_t
*spa
);
919 extern uint64_t spa_vdev_config_enter(spa_t
*spa
);
920 extern void spa_vdev_config_exit(spa_t
*spa
, vdev_t
*vd
, uint64_t txg
,
921 int error
, char *tag
);
922 extern int spa_vdev_exit(spa_t
*spa
, vdev_t
*vd
, uint64_t txg
, int error
);
924 /* Pool vdev state change lock */
925 extern void spa_vdev_state_enter(spa_t
*spa
, int oplock
);
926 extern int spa_vdev_state_exit(spa_t
*spa
, vdev_t
*vd
, int error
);
929 typedef enum spa_log_state
{
930 SPA_LOG_UNKNOWN
= 0, /* unknown log state */
931 SPA_LOG_MISSING
, /* missing log(s) */
932 SPA_LOG_CLEAR
, /* clear the log(s) */
933 SPA_LOG_GOOD
, /* log(s) are good */
936 extern spa_log_state_t
spa_get_log_state(spa_t
*spa
);
937 extern void spa_set_log_state(spa_t
*spa
, spa_log_state_t state
);
938 extern int spa_reset_logs(spa_t
*spa
);
940 /* Log claim callback */
941 extern void spa_claim_notify(zio_t
*zio
);
942 extern void spa_deadman(void *);
944 /* Accessor functions */
945 extern boolean_t
spa_shutting_down(spa_t
*spa
);
946 extern struct dsl_pool
*spa_get_dsl(spa_t
*spa
);
947 extern boolean_t
spa_is_initializing(spa_t
*spa
);
948 extern boolean_t
spa_indirect_vdevs_loaded(spa_t
*spa
);
949 extern blkptr_t
*spa_get_rootblkptr(spa_t
*spa
);
950 extern void spa_set_rootblkptr(spa_t
*spa
, const blkptr_t
*bp
);
951 extern void spa_altroot(spa_t
*, char *, size_t);
952 extern int spa_sync_pass(spa_t
*spa
);
953 extern char *spa_name(spa_t
*spa
);
954 extern uint64_t spa_guid(spa_t
*spa
);
955 extern uint64_t spa_load_guid(spa_t
*spa
);
956 extern uint64_t spa_last_synced_txg(spa_t
*spa
);
957 extern uint64_t spa_first_txg(spa_t
*spa
);
958 extern uint64_t spa_syncing_txg(spa_t
*spa
);
959 extern uint64_t spa_final_dirty_txg(spa_t
*spa
);
960 extern uint64_t spa_version(spa_t
*spa
);
961 extern pool_state_t
spa_state(spa_t
*spa
);
962 extern spa_load_state_t
spa_load_state(spa_t
*spa
);
963 extern uint64_t spa_freeze_txg(spa_t
*spa
);
964 extern uint64_t spa_get_worst_case_asize(spa_t
*spa
, uint64_t lsize
);
965 extern uint64_t spa_get_dspace(spa_t
*spa
);
966 extern uint64_t spa_get_slop_space(spa_t
*spa
);
967 extern void spa_update_dspace(spa_t
*spa
);
968 extern uint64_t spa_version(spa_t
*spa
);
969 extern boolean_t
spa_deflate(spa_t
*spa
);
970 extern metaslab_class_t
*spa_normal_class(spa_t
*spa
);
971 extern metaslab_class_t
*spa_log_class(spa_t
*spa
);
972 extern void spa_evicting_os_register(spa_t
*, objset_t
*os
);
973 extern void spa_evicting_os_deregister(spa_t
*, objset_t
*os
);
974 extern void spa_evicting_os_wait(spa_t
*spa
);
975 extern int spa_max_replication(spa_t
*spa
);
976 extern int spa_prev_software_version(spa_t
*spa
);
977 extern uint64_t spa_get_failmode(spa_t
*spa
);
978 extern uint64_t spa_get_deadman_failmode(spa_t
*spa
);
979 extern void spa_set_deadman_failmode(spa_t
*spa
, const char *failmode
);
980 extern boolean_t
spa_suspended(spa_t
*spa
);
981 extern uint64_t spa_bootfs(spa_t
*spa
);
982 extern uint64_t spa_delegation(spa_t
*spa
);
983 extern objset_t
*spa_meta_objset(spa_t
*spa
);
984 extern uint64_t spa_deadman_synctime(spa_t
*spa
);
985 extern uint64_t spa_deadman_ziotime(spa_t
*spa
);
987 /* Miscellaneous support routines */
988 extern void spa_activate_mos_feature(spa_t
*spa
, const char *feature
,
990 extern void spa_deactivate_mos_feature(spa_t
*spa
, const char *feature
);
991 extern int spa_rename(const char *oldname
, const char *newname
);
992 extern spa_t
*spa_by_guid(uint64_t pool_guid
, uint64_t device_guid
);
993 extern boolean_t
spa_guid_exists(uint64_t pool_guid
, uint64_t device_guid
);
994 extern char *spa_strdup(const char *);
995 extern void spa_strfree(char *);
996 extern uint64_t spa_get_random(uint64_t range
);
997 extern uint64_t spa_generate_guid(spa_t
*spa
);
998 extern void snprintf_blkptr(char *buf
, size_t buflen
, const blkptr_t
*bp
);
999 extern void spa_freeze(spa_t
*spa
);
1000 extern int spa_change_guid(spa_t
*spa
);
1001 extern void spa_upgrade(spa_t
*spa
, uint64_t version
);
1002 extern void spa_evict_all(void);
1003 extern vdev_t
*spa_lookup_by_guid(spa_t
*spa
, uint64_t guid
,
1005 extern boolean_t
spa_has_spare(spa_t
*, uint64_t guid
);
1006 extern uint64_t dva_get_dsize_sync(spa_t
*spa
, const dva_t
*dva
);
1007 extern uint64_t bp_get_dsize_sync(spa_t
*spa
, const blkptr_t
*bp
);
1008 extern uint64_t bp_get_dsize(spa_t
*spa
, const blkptr_t
*bp
);
1009 extern boolean_t
spa_has_slogs(spa_t
*spa
);
1010 extern boolean_t
spa_is_root(spa_t
*spa
);
1011 extern boolean_t
spa_writeable(spa_t
*spa
);
1012 extern boolean_t
spa_has_pending_synctask(spa_t
*spa
);
1013 extern int spa_maxblocksize(spa_t
*spa
);
1014 extern int spa_maxdnodesize(spa_t
*spa
);
1015 extern void zfs_blkptr_verify(spa_t
*spa
, const blkptr_t
*bp
);
1016 typedef void (*spa_remap_cb_t
)(uint64_t vdev
, uint64_t offset
, uint64_t size
,
1018 extern boolean_t
spa_remap_blkptr(spa_t
*spa
, blkptr_t
*bp
,
1019 spa_remap_cb_t callback
, void *arg
);
1020 extern uint64_t spa_get_last_removal_txg(spa_t
*spa
);
1021 extern boolean_t
spa_multihost(spa_t
*spa
);
1022 extern unsigned long spa_get_hostid(void);
1024 extern int spa_mode(spa_t
*spa
);
1025 extern uint64_t zfs_strtonum(const char *str
, char **nptr
);
1027 extern char *spa_his_ievent_table
[];
1029 extern void spa_history_create_obj(spa_t
*spa
, dmu_tx_t
*tx
);
1030 extern int spa_history_get(spa_t
*spa
, uint64_t *offset
, uint64_t *len_read
,
1032 extern int spa_history_log(spa_t
*spa
, const char *his_buf
);
1033 extern int spa_history_log_nvl(spa_t
*spa
, nvlist_t
*nvl
);
1034 extern void spa_history_log_version(spa_t
*spa
, const char *operation
,
1036 extern void spa_history_log_internal(spa_t
*spa
, const char *operation
,
1037 dmu_tx_t
*tx
, const char *fmt
, ...);
1038 extern void spa_history_log_internal_ds(struct dsl_dataset
*ds
, const char *op
,
1039 dmu_tx_t
*tx
, const char *fmt
, ...);
1040 extern void spa_history_log_internal_dd(dsl_dir_t
*dd
, const char *operation
,
1041 dmu_tx_t
*tx
, const char *fmt
, ...);
1043 /* error handling */
1044 struct zbookmark_phys
;
1045 extern void spa_log_error(spa_t
*spa
, const zbookmark_phys_t
*zb
);
1046 extern void zfs_ereport_post(const char *class, spa_t
*spa
, vdev_t
*vd
,
1047 const zbookmark_phys_t
*zb
, zio_t
*zio
, uint64_t stateoroffset
,
1049 extern nvlist_t
*zfs_event_create(spa_t
*spa
, vdev_t
*vd
, const char *type
,
1050 const char *name
, nvlist_t
*aux
);
1051 extern void zfs_post_remove(spa_t
*spa
, vdev_t
*vd
);
1052 extern void zfs_post_state_change(spa_t
*spa
, vdev_t
*vd
, uint64_t laststate
);
1053 extern void zfs_post_autoreplace(spa_t
*spa
, vdev_t
*vd
);
1054 extern uint64_t spa_get_errlog_size(spa_t
*spa
);
1055 extern int spa_get_errlog(spa_t
*spa
, void *uaddr
, size_t *count
);
1056 extern void spa_errlog_rotate(spa_t
*spa
);
1057 extern void spa_errlog_drain(spa_t
*spa
);
1058 extern void spa_errlog_sync(spa_t
*spa
, uint64_t txg
);
1059 extern void spa_get_errlists(spa_t
*spa
, avl_tree_t
*last
, avl_tree_t
*scrub
);
1062 extern void vdev_cache_stat_init(void);
1063 extern void vdev_cache_stat_fini(void);
1066 extern void vdev_mirror_stat_init(void);
1067 extern void vdev_mirror_stat_fini(void);
1069 /* Initialization and termination */
1070 extern void spa_init(int flags
);
1071 extern void spa_fini(void);
1072 extern void spa_boot_init(void);
1075 extern int spa_prop_set(spa_t
*spa
, nvlist_t
*nvp
);
1076 extern int spa_prop_get(spa_t
*spa
, nvlist_t
**nvp
);
1077 extern void spa_prop_clear_bootfs(spa_t
*spa
, uint64_t obj
, dmu_tx_t
*tx
);
1078 extern void spa_configfile_set(spa_t
*, nvlist_t
*, boolean_t
);
1080 /* asynchronous event notification */
1081 extern void spa_event_notify(spa_t
*spa
, vdev_t
*vdev
, nvlist_t
*hist_nvl
,
1085 #define dprintf_bp(bp, fmt, ...) do { \
1086 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
1087 char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \
1088 snprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \
1089 dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \
1090 kmem_free(__blkbuf, BP_SPRINTF_LEN); \
1092 _NOTE(CONSTCOND) } while (0)
1094 #define dprintf_bp(bp, fmt, ...)
1097 extern int spa_mode_global
; /* mode, e.g. FREAD | FWRITE */
1098 extern int zfs_deadman_enabled
;
1099 extern unsigned long zfs_deadman_synctime_ms
;
1100 extern unsigned long zfs_deadman_ziotime_ms
;
1101 extern unsigned long zfs_deadman_checktime_ms
;
1107 #endif /* _SYS_SPA_H */