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34dc7c2f
BB		 1/*
2 * CDDL HEADER START
3 *
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.
7 *
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.
12 *
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]
18 *
19 * CDDL HEADER END
20 */
21/*
428870ff 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
5dbd68a3 23 * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
3541dc6d 24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
0c66c32d 25 * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
3c67d83a 26 * Copyright 2013 Saso Kiselkov. All rights reserved.
12fa0466
DE		 27 * Copyright (c) 2014 Integros [integros.com]
28 * Copyright 2017 Joyent, Inc.
0ea05c64 29 * Copyright (c) 2017 Datto Inc.
34dc7c2f
BB		 30 */
31
32#ifndef _SYS_SPA_H
33#define _SYS_SPA_H
34
34dc7c2f
BB		 35#include <sys/avl.h>
36#include <sys/zfs_context.h>
efcd79a8 37#include <sys/kstat.h>
34dc7c2f
BB		 38#include <sys/nvpair.h>
39#include <sys/sysmacros.h>
40#include <sys/types.h>
41#include <sys/fs/zfs.h>
1eeb4562 42#include <sys/spa_checksum.h>
c4434877 43#include <sys/dmu.h>
34dc7c2f
BB		 44
45#ifdef __cplusplus
46extern "C" {
47#endif
48
49/*
50 * Forward references that lots of things need.
51 */
52typedef struct spa spa_t;
53typedef struct vdev vdev_t;
54typedef struct metaslab metaslab_t;
428870ff
BB		 55typedef struct metaslab_group metaslab_group_t;
56typedef struct metaslab_class metaslab_class_t;
57typedef struct zio zio_t;
34dc7c2f 58typedef struct zilog zilog_t;
34dc7c2f 59typedef struct spa_aux_vdev spa_aux_vdev_t;
428870ff
BB		 60typedef struct ddt ddt_t;
61typedef struct ddt_entry ddt_entry_t;
5dbd68a3 62typedef struct zbookmark_phys zbookmark_phys_t;
1421c891 63
34dc7c2f 64struct dsl_pool;
6f1ffb06 65struct dsl_dataset;
34dc7c2f
BB		 66
67/*
68 * General-purpose 32-bit and 64-bit bitfield encodings.
69 */
70#define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len))
71#define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len))
72#define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low))
73#define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low))
74
75#define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
76#define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
77
b0bc7a84
MG		 78#define BF32_SET(x, low, len, val) do { \
79 ASSERT3U(val, <, 1U << (len)); \
80 ASSERT3U(low + len, <=, 32); \
81 (x) ^= BF32_ENCODE((x >> low) ^ (val), low, len); \
82_NOTE(CONSTCOND) } while (0)
83
84#define BF64_SET(x, low, len, val) do { \
85 ASSERT3U(val, <, 1ULL << (len)); \
86 ASSERT3U(low + len, <=, 64); \
87 ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)); \
88_NOTE(CONSTCOND) } while (0)
34dc7c2f
BB		 89
90#define BF32_GET_SB(x, low, len, shift, bias) \
91 ((BF32_GET(x, low, len) + (bias)) << (shift))
92#define BF64_GET_SB(x, low, len, shift, bias) \
93 ((BF64_GET(x, low, len) + (bias)) << (shift))
94
b0bc7a84
MG		 95#define BF32_SET_SB(x, low, len, shift, bias, val) do { \
96 ASSERT(IS_P2ALIGNED(val, 1U << shift)); \
97 ASSERT3S((val) >> (shift), >=, bias); \
98 BF32_SET(x, low, len, ((val) >> (shift)) - (bias)); \
99_NOTE(CONSTCOND) } while (0)
100#define BF64_SET_SB(x, low, len, shift, bias, val) do { \
101 ASSERT(IS_P2ALIGNED(val, 1ULL << shift)); \
102 ASSERT3S((val) >> (shift), >=, bias); \
103 BF64_SET(x, low, len, ((val) >> (shift)) - (bias)); \
104_NOTE(CONSTCOND) } while (0)
34dc7c2f
BB		 105
106/*
f1512ee6
MA		 107 * We currently support block sizes from 512 bytes to 16MB.
108 * The benefits of larger blocks, and thus larger IO, need to be weighed
109 * against the cost of COWing a giant block to modify one byte, and the
110 * large latency of reading or writing a large block.
111 *
112 * Note that although blocks up to 16MB are supported, the recordsize
113 * property can not be set larger than zfs_max_recordsize (default 1MB).
114 * See the comment near zfs_max_recordsize in dsl_dataset.c for details.
115 *
116 * Note that although the LSIZE field of the blkptr_t can store sizes up
117 * to 32MB, the dnode's dn_datablkszsec can only store sizes up to
118 * 32MB - 512 bytes. Therefore, we limit SPA_MAXBLOCKSIZE to 16MB.
34dc7c2f
BB		 119 */
120#define SPA_MINBLOCKSHIFT 9
f1512ee6
MA		 121#define SPA_OLD_MAXBLOCKSHIFT 17
122#define SPA_MAXBLOCKSHIFT 24
34dc7c2f 123#define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT)
f1512ee6 124#define SPA_OLD_MAXBLOCKSIZE (1ULL << SPA_OLD_MAXBLOCKSHIFT)
34dc7c2f
BB		 125#define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT)
126
ff61d1a4 127/*
128 * Alignment Shift (ashift) is an immutable, internal top-level vdev property
129 * which can only be set at vdev creation time. Physical writes are always done
130 * according to it, which makes 2^ashift the smallest possible IO on a vdev.
131 *
dddef7d6 132 * We currently allow values ranging from 512 bytes (2^9 = 512) to 64 KiB
133 * (2^16 = 65,536).
ff61d1a4 134 */
135#define ASHIFT_MIN 9
dddef7d6 136#define ASHIFT_MAX 16
ff61d1a4 137
b128c09f
BB		 138/*
139 * Size of block to hold the configuration data (a packed nvlist)
140 */
9ae529ec 141#define SPA_CONFIG_BLOCKSIZE (1ULL << 14)
b128c09f 142
34dc7c2f
BB		 143/*
144 * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
145 * The ASIZE encoding should be at least 64 times larger (6 more bits)
146 * to support up to 4-way RAID-Z mirror mode with worst-case gang block
147 * overhead, three DVAs per bp, plus one more bit in case we do anything
148 * else that expands the ASIZE.
149 */
150#define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */
151#define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */
152#define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */
153
d3c2ae1c
GW		 154#define SPA_COMPRESSBITS 7
155
34dc7c2f
BB		 156/*
157 * All SPA data is represented by 128-bit data virtual addresses (DVAs).
158 * The members of the dva_t should be considered opaque outside the SPA.
159 */
160typedef struct dva {
161 uint64_t dva_word[2];
162} dva_t;
163
34dc7c2f 164
3c67d83a
TH		 165/*
166 * Some checksums/hashes need a 256-bit initialization salt. This salt is kept
167 * secret and is suitable for use in MAC algorithms as the key.
168 */
169typedef struct zio_cksum_salt {
170 uint8_t zcs_bytes[32];
171} zio_cksum_salt_t;
172
34dc7c2f
BB		 173/*
174 * Each block is described by its DVAs, time of birth, checksum, etc.
175 * The word-by-word, bit-by-bit layout of the blkptr is as follows:
176 *
177 * 64 56 48 40 32 24 16 8 0
178 * +-------+-------+-------+-------+-------+-------+-------+-------+
179 * 0 | vdev1 | GRID | ASIZE |
180 * +-------+-------+-------+-------+-------+-------+-------+-------+
181 * 1 |G| offset1 |
182 * +-------+-------+-------+-------+-------+-------+-------+-------+
183 * 2 | vdev2 | GRID | ASIZE |
184 * +-------+-------+-------+-------+-------+-------+-------+-------+
185 * 3 |G| offset2 |
186 * +-------+-------+-------+-------+-------+-------+-------+-------+
187 * 4 | vdev3 | GRID | ASIZE |
188 * +-------+-------+-------+-------+-------+-------+-------+-------+
189 * 5 |G| offset3 |
190 * +-------+-------+-------+-------+-------+-------+-------+-------+
9b67f605 191 * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE |
34dc7c2f
BB		 192 * +-------+-------+-------+-------+-------+-------+-------+-------+
193 * 7 | padding |
194 * +-------+-------+-------+-------+-------+-------+-------+-------+
195 * 8 | padding |
196 * +-------+-------+-------+-------+-------+-------+-------+-------+
428870ff 197 * 9 | physical birth txg |
34dc7c2f 198 * +-------+-------+-------+-------+-------+-------+-------+-------+
428870ff 199 * a | logical birth txg |
34dc7c2f
BB		 200 * +-------+-------+-------+-------+-------+-------+-------+-------+
201 * b | fill count |
202 * +-------+-------+-------+-------+-------+-------+-------+-------+
203 * c | checksum[0] |
204 * +-------+-------+-------+-------+-------+-------+-------+-------+
205 * d | checksum[1] |
206 * +-------+-------+-------+-------+-------+-------+-------+-------+
207 * e | checksum[2] |
208 * +-------+-------+-------+-------+-------+-------+-------+-------+
209 * f | checksum[3] |
210 * +-------+-------+-------+-------+-------+-------+-------+-------+
211 *
212 * Legend:
213 *
214 * vdev virtual device ID
215 * offset offset into virtual device
216 * LSIZE logical size
217 * PSIZE physical size (after compression)
218 * ASIZE allocated size (including RAID-Z parity and gang block headers)
219 * GRID RAID-Z layout information (reserved for future use)
220 * cksum checksum function
221 * comp compression function
222 * G gang block indicator
428870ff
BB		 223 * B byteorder (endianness)
224 * D dedup
9b67f605
MA		 225 * X encryption (on version 30, which is not supported)
226 * E blkptr_t contains embedded data (see below)
34dc7c2f 227 * lvl level of indirection
428870ff
BB		 228 * type DMU object type
229 * phys birth txg of block allocation; zero if same as logical birth txg
230 * log. birth transaction group in which the block was logically born
34dc7c2f
BB		 231 * fill count number of non-zero blocks under this bp
232 * checksum[4] 256-bit checksum of the data this bp describes
233 */
9b67f605
MA		 234
235/*
236 * "Embedded" blkptr_t's don't actually point to a block, instead they
237 * have a data payload embedded in the blkptr_t itself. See the comment
238 * in blkptr.c for more details.
239 *
240 * The blkptr_t is laid out as follows:
241 *
242 * 64 56 48 40 32 24 16 8 0
243 * +-------+-------+-------+-------+-------+-------+-------+-------+
244 * 0 | payload |
245 * 1 | payload |
246 * 2 | payload |
247 * 3 | payload |
248 * 4 | payload |
249 * 5 | payload |
250 * +-------+-------+-------+-------+-------+-------+-------+-------+
251 * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE |
252 * +-------+-------+-------+-------+-------+-------+-------+-------+
253 * 7 | payload |
254 * 8 | payload |
255 * 9 | payload |
256 * +-------+-------+-------+-------+-------+-------+-------+-------+
257 * a | logical birth txg |
258 * +-------+-------+-------+-------+-------+-------+-------+-------+
259 * b | payload |
260 * c | payload |
261 * d | payload |
262 * e | payload |
263 * f | payload |
264 * +-------+-------+-------+-------+-------+-------+-------+-------+
265 *
266 * Legend:
267 *
268 * payload contains the embedded data
269 * B (byteorder) byteorder (endianness)
270 * D (dedup) padding (set to zero)
271 * X encryption (set to zero; see above)
272 * E (embedded) set to one
273 * lvl indirection level
274 * type DMU object type
275 * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*)
276 * comp compression function of payload
277 * PSIZE size of payload after compression, in bytes
278 * LSIZE logical size of payload, in bytes
279 * note that 25 bits is enough to store the largest
280 * "normal" BP's LSIZE (2^16 * 2^9) in bytes
281 * log. birth transaction group in which the block was logically born
282 *
283 * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded
284 * bp's they are stored in units of SPA_MINBLOCKSHIFT.
285 * Generally, the generic BP_GET_*() macros can be used on embedded BP's.
286 * The B, D, X, lvl, type, and comp fields are stored the same as with normal
287 * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must
288 * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before
289 * other macros, as they assert that they are only used on BP's of the correct
290 * "embedded-ness".
291 */
292
293#define BPE_GET_ETYPE(bp) \
294 (ASSERT(BP_IS_EMBEDDED(bp)), \
295 BF64_GET((bp)->blk_prop, 40, 8))
296#define BPE_SET_ETYPE(bp, t) do { \
297 ASSERT(BP_IS_EMBEDDED(bp)); \
298 BF64_SET((bp)->blk_prop, 40, 8, t); \
299_NOTE(CONSTCOND) } while (0)
300
301#define BPE_GET_LSIZE(bp) \
302 (ASSERT(BP_IS_EMBEDDED(bp)), \
303 BF64_GET_SB((bp)->blk_prop, 0, 25, 0, 1))
304#define BPE_SET_LSIZE(bp, x) do { \
305 ASSERT(BP_IS_EMBEDDED(bp)); \
306 BF64_SET_SB((bp)->blk_prop, 0, 25, 0, 1, x); \
307_NOTE(CONSTCOND) } while (0)
308
309#define BPE_GET_PSIZE(bp) \
310 (ASSERT(BP_IS_EMBEDDED(bp)), \
311 BF64_GET_SB((bp)->blk_prop, 25, 7, 0, 1))
312#define BPE_SET_PSIZE(bp, x) do { \
313 ASSERT(BP_IS_EMBEDDED(bp)); \
314 BF64_SET_SB((bp)->blk_prop, 25, 7, 0, 1, x); \
315_NOTE(CONSTCOND) } while (0)
316
317typedef enum bp_embedded_type {
318 BP_EMBEDDED_TYPE_DATA,
319 BP_EMBEDDED_TYPE_RESERVED, /* Reserved for an unintegrated feature. */
320 NUM_BP_EMBEDDED_TYPES = BP_EMBEDDED_TYPE_RESERVED
321} bp_embedded_type_t;
322
323#define BPE_NUM_WORDS 14
324#define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t))
325#define BPE_IS_PAYLOADWORD(bp, wp) \
326 ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth)
327
34dc7c2f
BB		 328#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
329#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
330
b0bc7a84
MG		 331/*
332 * A block is a hole when it has either 1) never been written to, or
333 * 2) is zero-filled. In both cases, ZFS can return all zeroes for all reads
334 * without physically allocating disk space. Holes are represented in the
335 * blkptr_t structure by zeroed blk_dva. Correct checking for holes is
336 * done through the BP_IS_HOLE macro. For holes, the logical size, level,
337 * DMU object type, and birth times are all also stored for holes that
338 * were written to at some point (i.e. were punched after having been filled).
339 */
428870ff
BB		 340typedef struct blkptr {
341 dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */
342 uint64_t blk_prop; /* size, compression, type, etc */
343 uint64_t blk_pad[2]; /* Extra space for the future */
344 uint64_t blk_phys_birth; /* txg when block was allocated */
345 uint64_t blk_birth; /* transaction group at birth */
346 uint64_t blk_fill; /* fill count */
347 zio_cksum_t blk_cksum; /* 256-bit checksum */
348} blkptr_t;
349
34dc7c2f
BB		 350/*
351 * Macros to get and set fields in a bp or DVA.
352 */
353#define DVA_GET_ASIZE(dva) \
b0bc7a84 354 BF64_GET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, SPA_MINBLOCKSHIFT, 0)
34dc7c2f 355#define DVA_SET_ASIZE(dva, x) \
b0bc7a84
MG		 356 BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \
357 SPA_MINBLOCKSHIFT, 0, x)
34dc7c2f
BB		 358
359#define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8)
360#define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x)
361
362#define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32)
363#define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x)
364
365#define DVA_GET_OFFSET(dva) \
366 BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0)
367#define DVA_SET_OFFSET(dva, x) \
368 BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x)
369
370#define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1)
371#define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
372
373#define BP_GET_LSIZE(bp) \
9b67f605
MA		 374 (BP_IS_EMBEDDED(bp) ? \
375 (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \
376 BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1))
377#define BP_SET_LSIZE(bp, x) do { \
378 ASSERT(!BP_IS_EMBEDDED(bp)); \
379 BF64_SET_SB((bp)->blk_prop, \
380 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
381_NOTE(CONSTCOND) } while (0)
34dc7c2f
BB		 382
383#define BP_GET_PSIZE(bp) \
9b67f605
MA		 384 (BP_IS_EMBEDDED(bp) ? 0 : \
385 BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1))
386#define BP_SET_PSIZE(bp, x) do { \
387 ASSERT(!BP_IS_EMBEDDED(bp)); \
388 BF64_SET_SB((bp)->blk_prop, \
389 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
390_NOTE(CONSTCOND) } while (0)
391
d3c2ae1c
GW		 392#define BP_GET_COMPRESS(bp) \
393 BF64_GET((bp)->blk_prop, 32, SPA_COMPRESSBITS)
394#define BP_SET_COMPRESS(bp, x) \
395 BF64_SET((bp)->blk_prop, 32, SPA_COMPRESSBITS, x)
34dc7c2f 396
9b67f605
MA		 397#define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1)
398#define BP_SET_EMBEDDED(bp, x) BF64_SET((bp)->blk_prop, 39, 1, x)
428870ff 399
9b67f605
MA		 400#define BP_GET_CHECKSUM(bp) \
401 (BP_IS_EMBEDDED(bp) ? ZIO_CHECKSUM_OFF : \
402 BF64_GET((bp)->blk_prop, 40, 8))
403#define BP_SET_CHECKSUM(bp, x) do { \
404 ASSERT(!BP_IS_EMBEDDED(bp)); \
405 BF64_SET((bp)->blk_prop, 40, 8, x); \
406_NOTE(CONSTCOND) } while (0)
34dc7c2f 407
428870ff
BB		 408#define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
409#define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
34dc7c2f 410
428870ff
BB		 411#define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
412#define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
34dc7c2f 413
428870ff
BB		 414#define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1)
415#define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x)
416
b0bc7a84 417#define BP_GET_BYTEORDER(bp) BF64_GET((bp)->blk_prop, 63, 1)
428870ff
BB		 418#define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
419
420#define BP_PHYSICAL_BIRTH(bp) \
9b67f605
MA		 421 (BP_IS_EMBEDDED(bp) ? 0 : \
422 (bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
428870ff
BB		 423
424#define BP_SET_BIRTH(bp, logical, physical) \
425{ \
9b67f605 426 ASSERT(!BP_IS_EMBEDDED(bp)); \
428870ff
BB		 427 (bp)->blk_birth = (logical); \
428 (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
429}
34dc7c2f 430
9b67f605
MA		 431#define BP_GET_FILL(bp) (BP_IS_EMBEDDED(bp) ? 1 : (bp)->blk_fill)
432
a6255b7f
DQ		 433#define BP_IS_METADATA(bp) \
434 (BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
435
34dc7c2f 436#define BP_GET_ASIZE(bp) \
9b67f605
MA		 437 (BP_IS_EMBEDDED(bp) ? 0 : \
438 DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
439 DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
440 DVA_GET_ASIZE(&(bp)->blk_dva[2]))
34dc7c2f 441
a6255b7f
DQ		 442#define BP_GET_UCSIZE(bp) \
443 (BP_IS_METADATA(bp) ? BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp))
34dc7c2f
BB		 444
445#define BP_GET_NDVAS(bp) \
9b67f605
MA		 446 (BP_IS_EMBEDDED(bp) ? 0 : \
447 !!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
34dc7c2f
BB		 448 !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
449 !!DVA_GET_ASIZE(&(bp)->blk_dva[2]))
450
451#define BP_COUNT_GANG(bp) \
9b67f605 452 (BP_IS_EMBEDDED(bp) ? 0 : \
34dc7c2f
BB		 453 (DVA_GET_GANG(&(bp)->blk_dva[0]) + \
454 DVA_GET_GANG(&(bp)->blk_dva[1]) + \
9b67f605 455 DVA_GET_GANG(&(bp)->blk_dva[2])))
34dc7c2f
BB		 456
457#define DVA_EQUAL(dva1, dva2) \
458 ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
459 (dva1)->dva_word[0] == (dva2)->dva_word[0])
460
428870ff
BB		 461#define BP_EQUAL(bp1, bp2) \
462 (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \
9b67f605 463 (bp1)->blk_birth == (bp2)->blk_birth && \
428870ff
BB		 464 DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \
465 DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \
466 DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2]))
467
37f8a883 468
34dc7c2f
BB		 469#define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0)
470
9b67f605
MA		 471#define BP_IDENTITY(bp) (ASSERT(!BP_IS_EMBEDDED(bp)), &(bp)->blk_dva[0])
472#define BP_IS_GANG(bp) \
473 (BP_IS_EMBEDDED(bp) ? B_FALSE : DVA_GET_GANG(BP_IDENTITY(bp)))
b0bc7a84
MG		 474#define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \
475 (dva)->dva_word[1] == 0ULL)
9b67f605
MA		 476#define BP_IS_HOLE(bp) \
477 (!BP_IS_EMBEDDED(bp) && DVA_IS_EMPTY(BP_IDENTITY(bp)))
428870ff
BB		 478
479/* BP_IS_RAIDZ(bp) assumes no block compression */
480#define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \
481 BP_GET_PSIZE(bp))
34dc7c2f 482
b128c09f 483#define BP_ZERO(bp) \
34dc7c2f
BB		 484{ \
485 (bp)->blk_dva[0].dva_word[0] = 0; \
486 (bp)->blk_dva[0].dva_word[1] = 0; \
487 (bp)->blk_dva[1].dva_word[0] = 0; \
488 (bp)->blk_dva[1].dva_word[1] = 0; \
489 (bp)->blk_dva[2].dva_word[0] = 0; \
490 (bp)->blk_dva[2].dva_word[1] = 0; \
34dc7c2f
BB		 491 (bp)->blk_prop = 0; \
492 (bp)->blk_pad[0] = 0; \
493 (bp)->blk_pad[1] = 0; \
428870ff 494 (bp)->blk_phys_birth = 0; \
b128c09f 495 (bp)->blk_birth = 0; \
34dc7c2f
BB		 496 (bp)->blk_fill = 0; \
497 ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \
498}
499
34dc7c2f
BB		 500#ifdef _BIG_ENDIAN
501#define ZFS_HOST_BYTEORDER (0ULL)
502#else
b0bc7a84 503#define ZFS_HOST_BYTEORDER (1ULL)
34dc7c2f
BB		 504#endif
505
506#define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER)
507
508#define BP_SPRINTF_LEN 320
509
428870ff
BB		 510/*
511 * This macro allows code sharing between zfs, libzpool, and mdb.
512 * 'func' is either snprintf() or mdb_snprintf().
513 * 'ws' (whitespace) can be ' ' for single-line format, '\n' for multi-line.
514 */
b0bc7a84 515#define SNPRINTF_BLKPTR(func, ws, buf, size, bp, type, checksum, compress) \
428870ff
BB		 516{ \
517 static const char *copyname[] = \
518 { "zero", "single", "double", "triple" }; \
428870ff
BB		 519 int len = 0; \
520 int copies = 0; \
d6320ddb 521 int d; \
428870ff
BB		 522 \
523 if (bp == NULL) { \
b0bc7a84 524 len += func(buf + len, size - len, "<NULL>"); \
428870ff 525 } else if (BP_IS_HOLE(bp)) { \
a4069eef
PS		 526 len += func(buf + len, size - len, \
527 "HOLE [L%llu %s] " \
528 "size=%llxL birth=%lluL", \
529 (u_longlong_t)BP_GET_LEVEL(bp), \
530 type, \
531 (u_longlong_t)BP_GET_LSIZE(bp), \
532 (u_longlong_t)bp->blk_birth); \
9b67f605
MA		 533 } else if (BP_IS_EMBEDDED(bp)) { \
534 len = func(buf + len, size - len, \
535 "EMBEDDED [L%llu %s] et=%u %s " \
536 "size=%llxL/%llxP birth=%lluL", \
537 (u_longlong_t)BP_GET_LEVEL(bp), \
538 type, \
539 (int)BPE_GET_ETYPE(bp), \
540 compress, \
541 (u_longlong_t)BPE_GET_LSIZE(bp), \
542 (u_longlong_t)BPE_GET_PSIZE(bp), \
543 (u_longlong_t)bp->blk_birth); \
428870ff 544 } else { \
d6320ddb 545 for (d = 0; d < BP_GET_NDVAS(bp); d++) { \
428870ff
BB		 546 const dva_t *dva = &bp->blk_dva[d]; \
547 if (DVA_IS_VALID(dva)) \
548 copies++; \
549 len += func(buf + len, size - len, \
550 "DVA[%d]=<%llu:%llx:%llx>%c", d, \
551 (u_longlong_t)DVA_GET_VDEV(dva), \
552 (u_longlong_t)DVA_GET_OFFSET(dva), \
553 (u_longlong_t)DVA_GET_ASIZE(dva), \
554 ws); \
555 } \
556 if (BP_IS_GANG(bp) && \
557 DVA_GET_ASIZE(&bp->blk_dva[2]) <= \
558 DVA_GET_ASIZE(&bp->blk_dva[1]) / 2) \
559 copies--; \
560 len += func(buf + len, size - len, \
561 "[L%llu %s] %s %s %s %s %s %s%c" \
562 "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \
563 "cksum=%llx:%llx:%llx:%llx", \
564 (u_longlong_t)BP_GET_LEVEL(bp), \
565 type, \
566 checksum, \
567 compress, \
568 BP_GET_BYTEORDER(bp) == 0 ? "BE" : "LE", \
569 BP_IS_GANG(bp) ? "gang" : "contiguous", \
570 BP_GET_DEDUP(bp) ? "dedup" : "unique", \
571 copyname[copies], \
572 ws, \
573 (u_longlong_t)BP_GET_LSIZE(bp), \
574 (u_longlong_t)BP_GET_PSIZE(bp), \
575 (u_longlong_t)bp->blk_birth, \
576 (u_longlong_t)BP_PHYSICAL_BIRTH(bp), \
9b67f605 577 (u_longlong_t)BP_GET_FILL(bp), \
428870ff
BB		 578 ws, \
579 (u_longlong_t)bp->blk_cksum.zc_word[0], \
580 (u_longlong_t)bp->blk_cksum.zc_word[1], \
581 (u_longlong_t)bp->blk_cksum.zc_word[2], \
582 (u_longlong_t)bp->blk_cksum.zc_word[3]); \
583 } \
584 ASSERT(len < size); \
585}
586
34dc7c2f 587#define BP_GET_BUFC_TYPE(bp) \
a6255b7f 588 (BP_IS_METADATA(bp) ? ARC_BUFC_METADATA : ARC_BUFC_DATA)
428870ff
BB		 589
590typedef enum spa_import_type {
591 SPA_IMPORT_EXISTING,
592 SPA_IMPORT_ASSEMBLE
593} spa_import_type_t;
34dc7c2f
BB		 594
595/* state manipulation functions */
596extern int spa_open(const char *pool, spa_t **, void *tag);
428870ff
BB		 597extern int spa_open_rewind(const char *pool, spa_t **, void *tag,
598 nvlist_t *policy, nvlist_t **config);
9ae529ec
CS		 599extern int spa_get_stats(const char *pool, nvlist_t **config, char *altroot,
600 size_t buflen);
34dc7c2f 601extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props,
6f1ffb06 602 nvlist_t *zplprops);
13fe0198 603extern int spa_import(char *pool, nvlist_t *config, nvlist_t *props,
572e2857 604 uint64_t flags);
34dc7c2f
BB		 605extern nvlist_t *spa_tryimport(nvlist_t *tryconfig);
606extern int spa_destroy(char *pool);
fb5f0bc8
BB		 607extern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force,
608 boolean_t hardforce);
34dc7c2f
BB		 609extern int spa_reset(char *pool);
610extern void spa_async_request(spa_t *spa, int flag);
b128c09f 611extern void spa_async_unrequest(spa_t *spa, int flag);
34dc7c2f
BB		 612extern void spa_async_suspend(spa_t *spa);
613extern void spa_async_resume(spa_t *spa);
614extern spa_t *spa_inject_addref(char *pool);
615extern void spa_inject_delref(spa_t *spa);
428870ff
BB		 616extern void spa_scan_stat_init(spa_t *spa);
617extern int spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps);
34dc7c2f 618
b128c09f
BB		 619#define SPA_ASYNC_CONFIG_UPDATE 0x01
620#define SPA_ASYNC_REMOVE 0x02
621#define SPA_ASYNC_PROBE 0x04
622#define SPA_ASYNC_RESILVER_DONE 0x08
623#define SPA_ASYNC_RESILVER 0x10
9babb374 624#define SPA_ASYNC_AUTOEXPAND 0x20
428870ff
BB		 625#define SPA_ASYNC_REMOVE_DONE 0x40
626#define SPA_ASYNC_REMOVE_STOP 0x80
627
628/*
629 * Controls the behavior of spa_vdev_remove().
630 */
631#define SPA_REMOVE_UNSPARE 0x01
632#define SPA_REMOVE_DONE 0x02
34dc7c2f
BB		 633
634/* device manipulation */
635extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot);
636extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot,
637 int replacing);
fb5f0bc8
BB		 638extern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid,
639 int replace_done);
34dc7c2f 640extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare);
428870ff 641extern boolean_t spa_vdev_remove_active(spa_t *spa);
34dc7c2f 642extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath);
9babb374 643extern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru);
428870ff
BB		 644extern int spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config,
645 nvlist_t *props, boolean_t exp);
34dc7c2f
BB		 646
647/* spare state (which is global across all pools) */
648extern void spa_spare_add(vdev_t *vd);
649extern void spa_spare_remove(vdev_t *vd);
b128c09f 650extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt);
34dc7c2f
BB		 651extern void spa_spare_activate(vdev_t *vd);
652
653/* L2ARC state (which is global across all pools) */
654extern void spa_l2cache_add(vdev_t *vd);
655extern void spa_l2cache_remove(vdev_t *vd);
656extern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool);
657extern void spa_l2cache_activate(vdev_t *vd);
658extern void spa_l2cache_drop(spa_t *spa);
34dc7c2f 659
428870ff
BB		 660/* scanning */
661extern int spa_scan(spa_t *spa, pool_scan_func_t func);
662extern int spa_scan_stop(spa_t *spa);
0ea05c64 663extern int spa_scrub_pause_resume(spa_t *spa, pool_scrub_cmd_t flag);
34dc7c2f
BB		 664
665/* spa syncing */
666extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */
667extern void spa_sync_allpools(void);
668
55d85d5a 669extern int zfs_sync_pass_deferred_free;
428870ff 670
b128c09f
BB		 671/* spa namespace global mutex */
672extern kmutex_t spa_namespace_lock;
673
34dc7c2f
BB		 674/*
675 * SPA configuration functions in spa_config.c
676 */
677
678#define SPA_CONFIG_UPDATE_POOL 0
679#define SPA_CONFIG_UPDATE_VDEVS 1
680
b128c09f 681extern void spa_config_sync(spa_t *, boolean_t, boolean_t);
34dc7c2f
BB		 682extern void spa_config_load(void);
683extern nvlist_t *spa_all_configs(uint64_t *);
684extern void spa_config_set(spa_t *spa, nvlist_t *config);
685extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg,
686 int getstats);
687extern void spa_config_update(spa_t *spa, int what);
34dc7c2f
BB		 688
689/*
690 * Miscellaneous SPA routines in spa_misc.c
691 */
692
693/* Namespace manipulation */
694extern spa_t *spa_lookup(const char *name);
428870ff 695extern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot);
34dc7c2f
BB		 696extern void spa_remove(spa_t *spa);
697extern spa_t *spa_next(spa_t *prev);
698
699/* Refcount functions */
700extern void spa_open_ref(spa_t *spa, void *tag);
701extern void spa_close(spa_t *spa, void *tag);
0c66c32d 702extern void spa_async_close(spa_t *spa, void *tag);
34dc7c2f
BB		 703extern boolean_t spa_refcount_zero(spa_t *spa);
704
428870ff 705#define SCL_NONE 0x00
b128c09f
BB		 706#define SCL_CONFIG 0x01
707#define SCL_STATE 0x02
708#define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */
709#define SCL_ALLOC 0x08
710#define SCL_ZIO 0x10
711#define SCL_FREE 0x20
712#define SCL_VDEV 0x40
713#define SCL_LOCKS 7
714#define SCL_ALL ((1 << SCL_LOCKS) - 1)
715#define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO)
716
1421c891
PS		 717/* Historical pool statistics */
718typedef struct spa_stats_history {
719 kmutex_t lock;
720 uint64_t count;
721 uint64_t size;
722 kstat_t *kstat;
723 void *private;
724 list_t list;
725} spa_stats_history_t;
726
727typedef struct spa_stats {
728 spa_stats_history_t read_history;
0b1401ee 729 spa_stats_history_t txg_history;
2d37239a 730 spa_stats_history_t tx_assign_histogram;
330847ff 731 spa_stats_history_t io_history;
379ca9cf 732 spa_stats_history_t mmp_history;
1421c891
PS		 733} spa_stats_t;
734
0b1401ee
BB		 735typedef enum txg_state {
736 TXG_STATE_BIRTH = 0,
737 TXG_STATE_OPEN = 1,
738 TXG_STATE_QUIESCED = 2,
478d64fd
IL		 739 TXG_STATE_WAIT_FOR_SYNC = 3,
740 TXG_STATE_SYNCED = 4,
741 TXG_STATE_COMMITTED = 5,
0b1401ee
BB		 742} txg_state_t;
743
baf67d15
BB		 744typedef struct txg_stat {
745 vdev_stat_t vs1;
746 vdev_stat_t vs2;
747 uint64_t txg;
748 uint64_t ndirty;
749} txg_stat_t;
750
1421c891
PS		 751extern void spa_stats_init(spa_t *spa);
752extern void spa_stats_destroy(spa_t *spa);
5dbd68a3 753extern void spa_read_history_add(spa_t *spa, const zbookmark_phys_t *zb,
1421c891 754 uint32_t aflags);
01b738f4 755extern void spa_txg_history_add(spa_t *spa, uint64_t txg, hrtime_t birth_time);
0b1401ee
BB		 756extern int spa_txg_history_set(spa_t *spa, uint64_t txg,
757 txg_state_t completed_state, hrtime_t completed_time);
baf67d15
BB		 758extern txg_stat_t *spa_txg_history_init_io(spa_t *, uint64_t,
759 struct dsl_pool *);
760extern void spa_txg_history_fini_io(spa_t *, txg_stat_t *);
2d37239a 761extern void spa_tx_assign_add_nsecs(spa_t *spa, uint64_t nsecs);
927f40d0 762extern int spa_mmp_history_set_skip(spa_t *spa, uint64_t mmp_kstat_id);
2644784f
OF		 763extern int spa_mmp_history_set(spa_t *spa, uint64_t mmp_kstat_id, int io_error,
764 hrtime_t duration);
927f40d0
OF		 765extern void *spa_mmp_history_add(spa_t *spa, uint64_t txg, uint64_t timestamp,
766 uint64_t mmp_delay, vdev_t *vd, int label, uint64_t mmp_kstat_id,
767 int error);
1421c891 768
b128c09f
BB		 769/* Pool configuration locks */
770extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw);
771extern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw);
772extern void spa_config_exit(spa_t *spa, int locks, void *tag);
773extern int spa_config_held(spa_t *spa, int locks, krw_t rw);
34dc7c2f
BB		 774
775/* Pool vdev add/remove lock */
776extern uint64_t spa_vdev_enter(spa_t *spa);
428870ff
BB		 777extern uint64_t spa_vdev_config_enter(spa_t *spa);
778extern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg,
779 int error, char *tag);
34dc7c2f
BB		 780extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error);
781
b128c09f 782/* Pool vdev state change lock */
428870ff 783extern void spa_vdev_state_enter(spa_t *spa, int oplock);
b128c09f
BB		 784extern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error);
785
428870ff
BB		 786/* Log state */
787typedef enum spa_log_state {
788 SPA_LOG_UNKNOWN = 0, /* unknown log state */
789 SPA_LOG_MISSING, /* missing log(s) */
790 SPA_LOG_CLEAR, /* clear the log(s) */
791 SPA_LOG_GOOD, /* log(s) are good */
792} spa_log_state_t;
793
794extern spa_log_state_t spa_get_log_state(spa_t *spa);
795extern void spa_set_log_state(spa_t *spa, spa_log_state_t state);
796extern int spa_offline_log(spa_t *spa);
797
798/* Log claim callback */
799extern void spa_claim_notify(zio_t *zio);
cc92e9d0 800extern void spa_deadman(void *);
428870ff 801
34dc7c2f 802/* Accessor functions */
b128c09f 803extern boolean_t spa_shutting_down(spa_t *spa);
34dc7c2f 804extern struct dsl_pool *spa_get_dsl(spa_t *spa);
9ae529ec 805extern boolean_t spa_is_initializing(spa_t *spa);
34dc7c2f
BB		 806extern blkptr_t *spa_get_rootblkptr(spa_t *spa);
807extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp);
808extern void spa_altroot(spa_t *, char *, size_t);
809extern int spa_sync_pass(spa_t *spa);
810extern char *spa_name(spa_t *spa);
811extern uint64_t spa_guid(spa_t *spa);
3541dc6d 812extern uint64_t spa_load_guid(spa_t *spa);
34dc7c2f
BB		 813extern uint64_t spa_last_synced_txg(spa_t *spa);
814extern uint64_t spa_first_txg(spa_t *spa);
428870ff 815extern uint64_t spa_syncing_txg(spa_t *spa);
3b7f360c 816extern uint64_t spa_final_dirty_txg(spa_t *spa);
34dc7c2f 817extern uint64_t spa_version(spa_t *spa);
b128c09f 818extern pool_state_t spa_state(spa_t *spa);
428870ff 819extern spa_load_state_t spa_load_state(spa_t *spa);
34dc7c2f 820extern uint64_t spa_freeze_txg(spa_t *spa);
3ec3bc21 821extern uint64_t spa_get_worst_case_asize(spa_t *spa, uint64_t lsize);
428870ff 822extern uint64_t spa_get_dspace(spa_t *spa);
0c60cc32 823extern uint64_t spa_get_slop_space(spa_t *spa);
428870ff 824extern void spa_update_dspace(spa_t *spa);
34dc7c2f 825extern uint64_t spa_version(spa_t *spa);
428870ff
BB		 826extern boolean_t spa_deflate(spa_t *spa);
827extern metaslab_class_t *spa_normal_class(spa_t *spa);
828extern metaslab_class_t *spa_log_class(spa_t *spa);
0c66c32d
JG		 829extern void spa_evicting_os_register(spa_t *, objset_t *os);
830extern void spa_evicting_os_deregister(spa_t *, objset_t *os);
831extern void spa_evicting_os_wait(spa_t *spa);
34dc7c2f 832extern int spa_max_replication(spa_t *spa);
428870ff 833extern int spa_prev_software_version(spa_t *spa);
34dc7c2f 834extern uint8_t spa_get_failmode(spa_t *spa);
b128c09f 835extern boolean_t spa_suspended(spa_t *spa);
428870ff
BB		 836extern uint64_t spa_bootfs(spa_t *spa);
837extern uint64_t spa_delegation(spa_t *spa);
838extern objset_t *spa_meta_objset(spa_t *spa);
cc92e9d0 839extern uint64_t spa_deadman_synctime(spa_t *spa);
34dc7c2f
BB		 840
841/* Miscellaneous support routines */
b0bc7a84
MG		 842extern void spa_activate_mos_feature(spa_t *spa, const char *feature,
843 dmu_tx_t *tx);
9ae529ec 844extern void spa_deactivate_mos_feature(spa_t *spa, const char *feature);
34dc7c2f 845extern int spa_rename(const char *oldname, const char *newname);
572e2857 846extern spa_t *spa_by_guid(uint64_t pool_guid, uint64_t device_guid);
34dc7c2f
BB		 847extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid);
848extern char *spa_strdup(const char *);
849extern void spa_strfree(char *);
850extern uint64_t spa_get_random(uint64_t range);
428870ff 851extern uint64_t spa_generate_guid(spa_t *spa);
b0bc7a84 852extern void snprintf_blkptr(char *buf, size_t buflen, const blkptr_t *bp);
34dc7c2f 853extern void spa_freeze(spa_t *spa);
3541dc6d 854extern int spa_change_guid(spa_t *spa);
34dc7c2f
BB		 855extern void spa_upgrade(spa_t *spa, uint64_t version);
856extern void spa_evict_all(void);
b128c09f
BB		 857extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid,
858 boolean_t l2cache);
34dc7c2f 859extern boolean_t spa_has_spare(spa_t *, uint64_t guid);
428870ff
BB		 860extern uint64_t dva_get_dsize_sync(spa_t *spa, const dva_t *dva);
861extern uint64_t bp_get_dsize_sync(spa_t *spa, const blkptr_t *bp);
862extern uint64_t bp_get_dsize(spa_t *spa, const blkptr_t *bp);
34dc7c2f 863extern boolean_t spa_has_slogs(spa_t *spa);
b128c09f 864extern boolean_t spa_is_root(spa_t *spa);
fb5f0bc8 865extern boolean_t spa_writeable(spa_t *spa);
acbad6ff 866extern boolean_t spa_has_pending_synctask(spa_t *spa);
f1512ee6 867extern int spa_maxblocksize(spa_t *spa);
50c957f7 868extern int spa_maxdnodesize(spa_t *spa);
63e3a861 869extern void zfs_blkptr_verify(spa_t *spa, const blkptr_t *bp);
379ca9cf
OF		 870extern boolean_t spa_multihost(spa_t *spa);
871extern unsigned long spa_get_hostid(void);
428870ff 872
fb5f0bc8 873extern int spa_mode(spa_t *spa);
e19572e4 874extern uint64_t zfs_strtonum(const char *str, char **nptr);
34dc7c2f 875
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BB		 876extern char *spa_his_ievent_table[];
877
878extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx);
879extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read,
880 char *his_buf);
6f1ffb06
MA		 881extern int spa_history_log(spa_t *spa, const char *his_buf);
882extern int spa_history_log_nvl(spa_t *spa, nvlist_t *nvl);
954516ce
BB		 883extern void spa_history_log_version(spa_t *spa, const char *operation,
884 dmu_tx_t *tx);
6f1ffb06
MA		 885extern void spa_history_log_internal(spa_t *spa, const char *operation,
886 dmu_tx_t *tx, const char *fmt, ...);
887extern void spa_history_log_internal_ds(struct dsl_dataset *ds, const char *op,
888 dmu_tx_t *tx, const char *fmt, ...);
889extern void spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation,
890 dmu_tx_t *tx, const char *fmt, ...);
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BB		 891
892/* error handling */
5dbd68a3 893struct zbookmark_phys;
428870ff 894extern void spa_log_error(spa_t *spa, zio_t *zio);
34dc7c2f 895extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
428870ff 896 zio_t *zio, uint64_t stateoroffset, uint64_t length);
12fa0466
DE		 897extern nvlist_t *zfs_event_create(spa_t *spa, vdev_t *vd, const char *type,
898 const char *name, nvlist_t *aux);
34dc7c2f 899extern void zfs_post_remove(spa_t *spa, vdev_t *vd);
d02ca379 900extern void zfs_post_state_change(spa_t *spa, vdev_t *vd, uint64_t laststate);
34dc7c2f
BB		 901extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd);
902extern uint64_t spa_get_errlog_size(spa_t *spa);
903extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count);
904extern void spa_errlog_rotate(spa_t *spa);
905extern void spa_errlog_drain(spa_t *spa);
906extern void spa_errlog_sync(spa_t *spa, uint64_t txg);
907extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub);
908
909/* vdev cache */
910extern void vdev_cache_stat_init(void);
911extern void vdev_cache_stat_fini(void);
912
913/* Initialization and termination */
914extern void spa_init(int flags);
915extern void spa_fini(void);
0bc8fd78 916extern void spa_boot_init(void);
34dc7c2f
BB		 917
918/* properties */
919extern int spa_prop_set(spa_t *spa, nvlist_t *nvp);
920extern int spa_prop_get(spa_t *spa, nvlist_t **nvp);
921extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx);
d164b209 922extern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t);
34dc7c2f
BB		 923
924/* asynchronous event notification */
12fa0466
DE		 925extern void spa_event_notify(spa_t *spa, vdev_t *vdev, nvlist_t *hist_nvl,
926 const char *name);
34dc7c2f
BB		 927
928#ifdef ZFS_DEBUG
79c76d5b
BB		 929#define dprintf_bp(bp, fmt, ...) do { \
930 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
931 char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \
932 snprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \
933 dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \
934 kmem_free(__blkbuf, BP_SPRINTF_LEN); \
34dc7c2f
BB		 935 } \
936_NOTE(CONSTCOND) } while (0)
937#else
938#define dprintf_bp(bp, fmt, ...)
939#endif
940
6d974228
GW		 941extern boolean_t spa_debug_enabled(spa_t *spa);
942#define spa_dbgmsg(spa, ...) \
943{ \
944 if (spa_debug_enabled(spa)) \
945 zfs_dbgmsg(__VA_ARGS__); \
946}
947
fb5f0bc8 948extern int spa_mode_global; /* mode, e.g. FREAD | FWRITE */
34dc7c2f
BB		 949
950#ifdef __cplusplus
951}
952#endif
953
954#endif /* _SYS_SPA_H */
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