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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.
34dc7c2f
BB		 27 */
28
29#ifndef _SYS_SPA_H
30#define _SYS_SPA_H
31
34dc7c2f
BB		 32#include <sys/avl.h>
33#include <sys/zfs_context.h>
efcd79a8 34#include <sys/kstat.h>
34dc7c2f
BB		 35#include <sys/nvpair.h>
36#include <sys/sysmacros.h>
37#include <sys/types.h>
38#include <sys/fs/zfs.h>
1eeb4562 39#include <sys/spa_checksum.h>
c4434877 40#include <sys/dmu.h>
34dc7c2f
BB		 41
42#ifdef __cplusplus
43extern "C" {
44#endif
45
46/*
47 * Forward references that lots of things need.
48 */
49typedef struct spa spa_t;
50typedef struct vdev vdev_t;
51typedef struct metaslab metaslab_t;
428870ff
BB		 52typedef struct metaslab_group metaslab_group_t;
53typedef struct metaslab_class metaslab_class_t;
54typedef struct zio zio_t;
34dc7c2f 55typedef struct zilog zilog_t;
34dc7c2f 56typedef struct spa_aux_vdev spa_aux_vdev_t;
428870ff
BB		 57typedef struct ddt ddt_t;
58typedef struct ddt_entry ddt_entry_t;
5dbd68a3 59typedef struct zbookmark_phys zbookmark_phys_t;
1421c891 60
34dc7c2f 61struct dsl_pool;
6f1ffb06 62struct dsl_dataset;
34dc7c2f
BB		 63
64/*
65 * General-purpose 32-bit and 64-bit bitfield encodings.
66 */
67#define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len))
68#define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len))
69#define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low))
70#define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low))
71
72#define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
73#define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
74
b0bc7a84
MG		 75#define BF32_SET(x, low, len, val) do { \
76 ASSERT3U(val, <, 1U << (len)); \
77 ASSERT3U(low + len, <=, 32); \
78 (x) ^= BF32_ENCODE((x >> low) ^ (val), low, len); \
79_NOTE(CONSTCOND) } while (0)
80
81#define BF64_SET(x, low, len, val) do { \
82 ASSERT3U(val, <, 1ULL << (len)); \
83 ASSERT3U(low + len, <=, 64); \
84 ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)); \
85_NOTE(CONSTCOND) } while (0)
34dc7c2f
BB		 86
87#define BF32_GET_SB(x, low, len, shift, bias) \
88 ((BF32_GET(x, low, len) + (bias)) << (shift))
89#define BF64_GET_SB(x, low, len, shift, bias) \
90 ((BF64_GET(x, low, len) + (bias)) << (shift))
91
b0bc7a84
MG		 92#define BF32_SET_SB(x, low, len, shift, bias, val) do { \
93 ASSERT(IS_P2ALIGNED(val, 1U << shift)); \
94 ASSERT3S((val) >> (shift), >=, bias); \
95 BF32_SET(x, low, len, ((val) >> (shift)) - (bias)); \
96_NOTE(CONSTCOND) } while (0)
97#define BF64_SET_SB(x, low, len, shift, bias, val) do { \
98 ASSERT(IS_P2ALIGNED(val, 1ULL << shift)); \
99 ASSERT3S((val) >> (shift), >=, bias); \
100 BF64_SET(x, low, len, ((val) >> (shift)) - (bias)); \
101_NOTE(CONSTCOND) } while (0)
34dc7c2f
BB		 102
103/*
f1512ee6
MA		 104 * We currently support block sizes from 512 bytes to 16MB.
105 * The benefits of larger blocks, and thus larger IO, need to be weighed
106 * against the cost of COWing a giant block to modify one byte, and the
107 * large latency of reading or writing a large block.
108 *
109 * Note that although blocks up to 16MB are supported, the recordsize
110 * property can not be set larger than zfs_max_recordsize (default 1MB).
111 * See the comment near zfs_max_recordsize in dsl_dataset.c for details.
112 *
113 * Note that although the LSIZE field of the blkptr_t can store sizes up
114 * to 32MB, the dnode's dn_datablkszsec can only store sizes up to
115 * 32MB - 512 bytes. Therefore, we limit SPA_MAXBLOCKSIZE to 16MB.
34dc7c2f
BB		 116 */
117#define SPA_MINBLOCKSHIFT 9
f1512ee6
MA		 118#define SPA_OLD_MAXBLOCKSHIFT 17
119#define SPA_MAXBLOCKSHIFT 24
34dc7c2f 120#define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT)
f1512ee6 121#define SPA_OLD_MAXBLOCKSIZE (1ULL << SPA_OLD_MAXBLOCKSHIFT)
34dc7c2f
BB		 122#define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT)
123
ff61d1a4 124/*
125 * Alignment Shift (ashift) is an immutable, internal top-level vdev property
126 * which can only be set at vdev creation time. Physical writes are always done
127 * according to it, which makes 2^ashift the smallest possible IO on a vdev.
128 *
dddef7d6 129 * We currently allow values ranging from 512 bytes (2^9 = 512) to 64 KiB
130 * (2^16 = 65,536).
ff61d1a4 131 */
132#define ASHIFT_MIN 9
dddef7d6 133#define ASHIFT_MAX 16
ff61d1a4 134
b128c09f
BB		 135/*
136 * Size of block to hold the configuration data (a packed nvlist)
137 */
9ae529ec 138#define SPA_CONFIG_BLOCKSIZE (1ULL << 14)
b128c09f 139
34dc7c2f
BB		 140/*
141 * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
142 * The ASIZE encoding should be at least 64 times larger (6 more bits)
143 * to support up to 4-way RAID-Z mirror mode with worst-case gang block
144 * overhead, three DVAs per bp, plus one more bit in case we do anything
145 * else that expands the ASIZE.
146 */
147#define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */
148#define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */
149#define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */
150
d3c2ae1c
GW		 151#define SPA_COMPRESSBITS 7
152
34dc7c2f
BB		 153/*
154 * All SPA data is represented by 128-bit data virtual addresses (DVAs).
155 * The members of the dva_t should be considered opaque outside the SPA.
156 */
157typedef struct dva {
158 uint64_t dva_word[2];
159} dva_t;
160
34dc7c2f 161
3c67d83a
TH		 162/*
163 * Some checksums/hashes need a 256-bit initialization salt. This salt is kept
164 * secret and is suitable for use in MAC algorithms as the key.
165 */
166typedef struct zio_cksum_salt {
167 uint8_t zcs_bytes[32];
168} zio_cksum_salt_t;
169
34dc7c2f
BB		 170/*
171 * Each block is described by its DVAs, time of birth, checksum, etc.
172 * The word-by-word, bit-by-bit layout of the blkptr is as follows:
173 *
174 * 64 56 48 40 32 24 16 8 0
175 * +-------+-------+-------+-------+-------+-------+-------+-------+
176 * 0 | vdev1 | GRID | ASIZE |
177 * +-------+-------+-------+-------+-------+-------+-------+-------+
178 * 1 |G| offset1 |
179 * +-------+-------+-------+-------+-------+-------+-------+-------+
180 * 2 | vdev2 | GRID | ASIZE |
181 * +-------+-------+-------+-------+-------+-------+-------+-------+
182 * 3 |G| offset2 |
183 * +-------+-------+-------+-------+-------+-------+-------+-------+
184 * 4 | vdev3 | GRID | ASIZE |
185 * +-------+-------+-------+-------+-------+-------+-------+-------+
186 * 5 |G| offset3 |
187 * +-------+-------+-------+-------+-------+-------+-------+-------+
9b67f605 188 * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE |
34dc7c2f
BB		 189 * +-------+-------+-------+-------+-------+-------+-------+-------+
190 * 7 | padding |
191 * +-------+-------+-------+-------+-------+-------+-------+-------+
192 * 8 | padding |
193 * +-------+-------+-------+-------+-------+-------+-------+-------+
428870ff 194 * 9 | physical birth txg |
34dc7c2f 195 * +-------+-------+-------+-------+-------+-------+-------+-------+
428870ff 196 * a | logical birth txg |
34dc7c2f
BB		 197 * +-------+-------+-------+-------+-------+-------+-------+-------+
198 * b | fill count |
199 * +-------+-------+-------+-------+-------+-------+-------+-------+
200 * c | checksum[0] |
201 * +-------+-------+-------+-------+-------+-------+-------+-------+
202 * d | checksum[1] |
203 * +-------+-------+-------+-------+-------+-------+-------+-------+
204 * e | checksum[2] |
205 * +-------+-------+-------+-------+-------+-------+-------+-------+
206 * f | checksum[3] |
207 * +-------+-------+-------+-------+-------+-------+-------+-------+
208 *
209 * Legend:
210 *
211 * vdev virtual device ID
212 * offset offset into virtual device
213 * LSIZE logical size
214 * PSIZE physical size (after compression)
215 * ASIZE allocated size (including RAID-Z parity and gang block headers)
216 * GRID RAID-Z layout information (reserved for future use)
217 * cksum checksum function
218 * comp compression function
219 * G gang block indicator
428870ff
BB		 220 * B byteorder (endianness)
221 * D dedup
9b67f605
MA		 222 * X encryption (on version 30, which is not supported)
223 * E blkptr_t contains embedded data (see below)
34dc7c2f 224 * lvl level of indirection
428870ff
BB		 225 * type DMU object type
226 * phys birth txg of block allocation; zero if same as logical birth txg
227 * log. birth transaction group in which the block was logically born
34dc7c2f
BB		 228 * fill count number of non-zero blocks under this bp
229 * checksum[4] 256-bit checksum of the data this bp describes
230 */
9b67f605
MA		 231
232/*
233 * "Embedded" blkptr_t's don't actually point to a block, instead they
234 * have a data payload embedded in the blkptr_t itself. See the comment
235 * in blkptr.c for more details.
236 *
237 * The blkptr_t is laid out as follows:
238 *
239 * 64 56 48 40 32 24 16 8 0
240 * +-------+-------+-------+-------+-------+-------+-------+-------+
241 * 0 | payload |
242 * 1 | payload |
243 * 2 | payload |
244 * 3 | payload |
245 * 4 | payload |
246 * 5 | payload |
247 * +-------+-------+-------+-------+-------+-------+-------+-------+
248 * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE |
249 * +-------+-------+-------+-------+-------+-------+-------+-------+
250 * 7 | payload |
251 * 8 | payload |
252 * 9 | payload |
253 * +-------+-------+-------+-------+-------+-------+-------+-------+
254 * a | logical birth txg |
255 * +-------+-------+-------+-------+-------+-------+-------+-------+
256 * b | payload |
257 * c | payload |
258 * d | payload |
259 * e | payload |
260 * f | payload |
261 * +-------+-------+-------+-------+-------+-------+-------+-------+
262 *
263 * Legend:
264 *
265 * payload contains the embedded data
266 * B (byteorder) byteorder (endianness)
267 * D (dedup) padding (set to zero)
268 * X encryption (set to zero; see above)
269 * E (embedded) set to one
270 * lvl indirection level
271 * type DMU object type
272 * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*)
273 * comp compression function of payload
274 * PSIZE size of payload after compression, in bytes
275 * LSIZE logical size of payload, in bytes
276 * note that 25 bits is enough to store the largest
277 * "normal" BP's LSIZE (2^16 * 2^9) in bytes
278 * log. birth transaction group in which the block was logically born
279 *
280 * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded
281 * bp's they are stored in units of SPA_MINBLOCKSHIFT.
282 * Generally, the generic BP_GET_*() macros can be used on embedded BP's.
283 * The B, D, X, lvl, type, and comp fields are stored the same as with normal
284 * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must
285 * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before
286 * other macros, as they assert that they are only used on BP's of the correct
287 * "embedded-ness".
288 */
289
290#define BPE_GET_ETYPE(bp) \
291 (ASSERT(BP_IS_EMBEDDED(bp)), \
292 BF64_GET((bp)->blk_prop, 40, 8))
293#define BPE_SET_ETYPE(bp, t) do { \
294 ASSERT(BP_IS_EMBEDDED(bp)); \
295 BF64_SET((bp)->blk_prop, 40, 8, t); \
296_NOTE(CONSTCOND) } while (0)
297
298#define BPE_GET_LSIZE(bp) \
299 (ASSERT(BP_IS_EMBEDDED(bp)), \
300 BF64_GET_SB((bp)->blk_prop, 0, 25, 0, 1))
301#define BPE_SET_LSIZE(bp, x) do { \
302 ASSERT(BP_IS_EMBEDDED(bp)); \
303 BF64_SET_SB((bp)->blk_prop, 0, 25, 0, 1, x); \
304_NOTE(CONSTCOND) } while (0)
305
306#define BPE_GET_PSIZE(bp) \
307 (ASSERT(BP_IS_EMBEDDED(bp)), \
308 BF64_GET_SB((bp)->blk_prop, 25, 7, 0, 1))
309#define BPE_SET_PSIZE(bp, x) do { \
310 ASSERT(BP_IS_EMBEDDED(bp)); \
311 BF64_SET_SB((bp)->blk_prop, 25, 7, 0, 1, x); \
312_NOTE(CONSTCOND) } while (0)
313
314typedef enum bp_embedded_type {
315 BP_EMBEDDED_TYPE_DATA,
316 BP_EMBEDDED_TYPE_RESERVED, /* Reserved for an unintegrated feature. */
317 NUM_BP_EMBEDDED_TYPES = BP_EMBEDDED_TYPE_RESERVED
318} bp_embedded_type_t;
319
320#define BPE_NUM_WORDS 14
321#define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t))
322#define BPE_IS_PAYLOADWORD(bp, wp) \
323 ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth)
324
34dc7c2f
BB		 325#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
326#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
327
b0bc7a84
MG		 328/*
329 * A block is a hole when it has either 1) never been written to, or
330 * 2) is zero-filled. In both cases, ZFS can return all zeroes for all reads
331 * without physically allocating disk space. Holes are represented in the
332 * blkptr_t structure by zeroed blk_dva. Correct checking for holes is
333 * done through the BP_IS_HOLE macro. For holes, the logical size, level,
334 * DMU object type, and birth times are all also stored for holes that
335 * were written to at some point (i.e. were punched after having been filled).
336 */
428870ff
BB		 337typedef struct blkptr {
338 dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */
339 uint64_t blk_prop; /* size, compression, type, etc */
340 uint64_t blk_pad[2]; /* Extra space for the future */
341 uint64_t blk_phys_birth; /* txg when block was allocated */
342 uint64_t blk_birth; /* transaction group at birth */
343 uint64_t blk_fill; /* fill count */
344 zio_cksum_t blk_cksum; /* 256-bit checksum */
345} blkptr_t;
346
34dc7c2f
BB		 347/*
348 * Macros to get and set fields in a bp or DVA.
349 */
350#define DVA_GET_ASIZE(dva) \
b0bc7a84 351 BF64_GET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, SPA_MINBLOCKSHIFT, 0)
34dc7c2f 352#define DVA_SET_ASIZE(dva, x) \
b0bc7a84
MG		 353 BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \
354 SPA_MINBLOCKSHIFT, 0, x)
34dc7c2f
BB		 355
356#define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8)
357#define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x)
358
359#define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32)
360#define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x)
361
362#define DVA_GET_OFFSET(dva) \
363 BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0)
364#define DVA_SET_OFFSET(dva, x) \
365 BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x)
366
367#define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1)
368#define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
369
370#define BP_GET_LSIZE(bp) \
9b67f605
MA		 371 (BP_IS_EMBEDDED(bp) ? \
372 (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \
373 BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1))
374#define BP_SET_LSIZE(bp, x) do { \
375 ASSERT(!BP_IS_EMBEDDED(bp)); \
376 BF64_SET_SB((bp)->blk_prop, \
377 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
378_NOTE(CONSTCOND) } while (0)
34dc7c2f
BB		 379
380#define BP_GET_PSIZE(bp) \
9b67f605
MA		 381 (BP_IS_EMBEDDED(bp) ? 0 : \
382 BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1))
383#define BP_SET_PSIZE(bp, x) do { \
384 ASSERT(!BP_IS_EMBEDDED(bp)); \
385 BF64_SET_SB((bp)->blk_prop, \
386 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
387_NOTE(CONSTCOND) } while (0)
388
d3c2ae1c
GW		 389#define BP_GET_COMPRESS(bp) \
390 BF64_GET((bp)->blk_prop, 32, SPA_COMPRESSBITS)
391#define BP_SET_COMPRESS(bp, x) \
392 BF64_SET((bp)->blk_prop, 32, SPA_COMPRESSBITS, x)
34dc7c2f 393
9b67f605
MA		 394#define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1)
395#define BP_SET_EMBEDDED(bp, x) BF64_SET((bp)->blk_prop, 39, 1, x)
428870ff 396
9b67f605
MA		 397#define BP_GET_CHECKSUM(bp) \
398 (BP_IS_EMBEDDED(bp) ? ZIO_CHECKSUM_OFF : \
399 BF64_GET((bp)->blk_prop, 40, 8))
400#define BP_SET_CHECKSUM(bp, x) do { \
401 ASSERT(!BP_IS_EMBEDDED(bp)); \
402 BF64_SET((bp)->blk_prop, 40, 8, x); \
403_NOTE(CONSTCOND) } while (0)
34dc7c2f 404
428870ff
BB		 405#define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
406#define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
34dc7c2f 407
428870ff
BB		 408#define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
409#define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
34dc7c2f 410
428870ff
BB		 411#define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1)
412#define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x)
413
b0bc7a84 414#define BP_GET_BYTEORDER(bp) BF64_GET((bp)->blk_prop, 63, 1)
428870ff
BB		 415#define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
416
417#define BP_PHYSICAL_BIRTH(bp) \
9b67f605
MA		 418 (BP_IS_EMBEDDED(bp) ? 0 : \
419 (bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
428870ff
BB		 420
421#define BP_SET_BIRTH(bp, logical, physical) \
422{ \
9b67f605 423 ASSERT(!BP_IS_EMBEDDED(bp)); \
428870ff
BB		 424 (bp)->blk_birth = (logical); \
425 (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
426}
34dc7c2f 427
9b67f605
MA		 428#define BP_GET_FILL(bp) (BP_IS_EMBEDDED(bp) ? 1 : (bp)->blk_fill)
429
a6255b7f
DQ		 430#define BP_IS_METADATA(bp) \
431 (BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
432
34dc7c2f 433#define BP_GET_ASIZE(bp) \
9b67f605
MA		 434 (BP_IS_EMBEDDED(bp) ? 0 : \
435 DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
436 DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
437 DVA_GET_ASIZE(&(bp)->blk_dva[2]))
34dc7c2f 438
a6255b7f
DQ		 439#define BP_GET_UCSIZE(bp) \
440 (BP_IS_METADATA(bp) ? BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp))
34dc7c2f
BB		 441
442#define BP_GET_NDVAS(bp) \
9b67f605
MA		 443 (BP_IS_EMBEDDED(bp) ? 0 : \
444 !!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
34dc7c2f
BB		 445 !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
446 !!DVA_GET_ASIZE(&(bp)->blk_dva[2]))
447
448#define BP_COUNT_GANG(bp) \
9b67f605 449 (BP_IS_EMBEDDED(bp) ? 0 : \
34dc7c2f
BB		 450 (DVA_GET_GANG(&(bp)->blk_dva[0]) + \
451 DVA_GET_GANG(&(bp)->blk_dva[1]) + \
9b67f605 452 DVA_GET_GANG(&(bp)->blk_dva[2])))
34dc7c2f
BB		 453
454#define DVA_EQUAL(dva1, dva2) \
455 ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
456 (dva1)->dva_word[0] == (dva2)->dva_word[0])
457
428870ff
BB		 458#define BP_EQUAL(bp1, bp2) \
459 (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \
9b67f605 460 (bp1)->blk_birth == (bp2)->blk_birth && \
428870ff
BB		 461 DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \
462 DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \
463 DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2]))
464
37f8a883 465
34dc7c2f
BB		 466#define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0)
467
9b67f605
MA		 468#define BP_IDENTITY(bp) (ASSERT(!BP_IS_EMBEDDED(bp)), &(bp)->blk_dva[0])
469#define BP_IS_GANG(bp) \
470 (BP_IS_EMBEDDED(bp) ? B_FALSE : DVA_GET_GANG(BP_IDENTITY(bp)))
b0bc7a84
MG		 471#define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \
472 (dva)->dva_word[1] == 0ULL)
9b67f605
MA		 473#define BP_IS_HOLE(bp) \
474 (!BP_IS_EMBEDDED(bp) && DVA_IS_EMPTY(BP_IDENTITY(bp)))
428870ff
BB		 475
476/* BP_IS_RAIDZ(bp) assumes no block compression */
477#define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \
478 BP_GET_PSIZE(bp))
34dc7c2f 479
b128c09f 480#define BP_ZERO(bp) \
34dc7c2f
BB		 481{ \
482 (bp)->blk_dva[0].dva_word[0] = 0; \
483 (bp)->blk_dva[0].dva_word[1] = 0; \
484 (bp)->blk_dva[1].dva_word[0] = 0; \
485 (bp)->blk_dva[1].dva_word[1] = 0; \
486 (bp)->blk_dva[2].dva_word[0] = 0; \
487 (bp)->blk_dva[2].dva_word[1] = 0; \
34dc7c2f
BB		 488 (bp)->blk_prop = 0; \
489 (bp)->blk_pad[0] = 0; \
490 (bp)->blk_pad[1] = 0; \
428870ff 491 (bp)->blk_phys_birth = 0; \
b128c09f 492 (bp)->blk_birth = 0; \
34dc7c2f
BB		 493 (bp)->blk_fill = 0; \
494 ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \
495}
496
34dc7c2f
BB		 497#ifdef _BIG_ENDIAN
498#define ZFS_HOST_BYTEORDER (0ULL)
499#else
b0bc7a84 500#define ZFS_HOST_BYTEORDER (1ULL)
34dc7c2f
BB		 501#endif
502
503#define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER)
504
505#define BP_SPRINTF_LEN 320
506
428870ff
BB		 507/*
508 * This macro allows code sharing between zfs, libzpool, and mdb.
509 * 'func' is either snprintf() or mdb_snprintf().
510 * 'ws' (whitespace) can be ' ' for single-line format, '\n' for multi-line.
511 */
b0bc7a84 512#define SNPRINTF_BLKPTR(func, ws, buf, size, bp, type, checksum, compress) \
428870ff
BB		 513{ \
514 static const char *copyname[] = \
515 { "zero", "single", "double", "triple" }; \
428870ff
BB		 516 int len = 0; \
517 int copies = 0; \
d6320ddb 518 int d; \
428870ff
BB		 519 \
520 if (bp == NULL) { \
b0bc7a84 521 len += func(buf + len, size - len, "<NULL>"); \
428870ff 522 } else if (BP_IS_HOLE(bp)) { \
a4069eef
PS		 523 len += func(buf + len, size - len, \
524 "HOLE [L%llu %s] " \
525 "size=%llxL birth=%lluL", \
526 (u_longlong_t)BP_GET_LEVEL(bp), \
527 type, \
528 (u_longlong_t)BP_GET_LSIZE(bp), \
529 (u_longlong_t)bp->blk_birth); \
9b67f605
MA		 530 } else if (BP_IS_EMBEDDED(bp)) { \
531 len = func(buf + len, size - len, \
532 "EMBEDDED [L%llu %s] et=%u %s " \
533 "size=%llxL/%llxP birth=%lluL", \
534 (u_longlong_t)BP_GET_LEVEL(bp), \
535 type, \
536 (int)BPE_GET_ETYPE(bp), \
537 compress, \
538 (u_longlong_t)BPE_GET_LSIZE(bp), \
539 (u_longlong_t)BPE_GET_PSIZE(bp), \
540 (u_longlong_t)bp->blk_birth); \
428870ff 541 } else { \
d6320ddb 542 for (d = 0; d < BP_GET_NDVAS(bp); d++) { \
428870ff
BB		 543 const dva_t *dva = &bp->blk_dva[d]; \
544 if (DVA_IS_VALID(dva)) \
545 copies++; \
546 len += func(buf + len, size - len, \
547 "DVA[%d]=<%llu:%llx:%llx>%c", d, \
548 (u_longlong_t)DVA_GET_VDEV(dva), \
549 (u_longlong_t)DVA_GET_OFFSET(dva), \
550 (u_longlong_t)DVA_GET_ASIZE(dva), \
551 ws); \
552 } \
553 if (BP_IS_GANG(bp) && \
554 DVA_GET_ASIZE(&bp->blk_dva[2]) <= \
555 DVA_GET_ASIZE(&bp->blk_dva[1]) / 2) \
556 copies--; \
557 len += func(buf + len, size - len, \
558 "[L%llu %s] %s %s %s %s %s %s%c" \
559 "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \
560 "cksum=%llx:%llx:%llx:%llx", \
561 (u_longlong_t)BP_GET_LEVEL(bp), \
562 type, \
563 checksum, \
564 compress, \
565 BP_GET_BYTEORDER(bp) == 0 ? "BE" : "LE", \
566 BP_IS_GANG(bp) ? "gang" : "contiguous", \
567 BP_GET_DEDUP(bp) ? "dedup" : "unique", \
568 copyname[copies], \
569 ws, \
570 (u_longlong_t)BP_GET_LSIZE(bp), \
571 (u_longlong_t)BP_GET_PSIZE(bp), \
572 (u_longlong_t)bp->blk_birth, \
573 (u_longlong_t)BP_PHYSICAL_BIRTH(bp), \
9b67f605 574 (u_longlong_t)BP_GET_FILL(bp), \
428870ff
BB		 575 ws, \
576 (u_longlong_t)bp->blk_cksum.zc_word[0], \
577 (u_longlong_t)bp->blk_cksum.zc_word[1], \
578 (u_longlong_t)bp->blk_cksum.zc_word[2], \
579 (u_longlong_t)bp->blk_cksum.zc_word[3]); \
580 } \
581 ASSERT(len < size); \
582}
583
34dc7c2f 584#define BP_GET_BUFC_TYPE(bp) \
a6255b7f 585 (BP_IS_METADATA(bp) ? ARC_BUFC_METADATA : ARC_BUFC_DATA)
428870ff
BB		 586
587typedef enum spa_import_type {
588 SPA_IMPORT_EXISTING,
589 SPA_IMPORT_ASSEMBLE
590} spa_import_type_t;
34dc7c2f
BB		 591
592/* state manipulation functions */
593extern int spa_open(const char *pool, spa_t **, void *tag);
428870ff
BB		 594extern int spa_open_rewind(const char *pool, spa_t **, void *tag,
595 nvlist_t *policy, nvlist_t **config);
9ae529ec
CS		 596extern int spa_get_stats(const char *pool, nvlist_t **config, char *altroot,
597 size_t buflen);
34dc7c2f 598extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props,
6f1ffb06 599 nvlist_t *zplprops);
13fe0198 600extern int spa_import(char *pool, nvlist_t *config, nvlist_t *props,
572e2857 601 uint64_t flags);
34dc7c2f
BB		 602extern nvlist_t *spa_tryimport(nvlist_t *tryconfig);
603extern int spa_destroy(char *pool);
fb5f0bc8
BB		 604extern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force,
605 boolean_t hardforce);
34dc7c2f
BB		 606extern int spa_reset(char *pool);
607extern void spa_async_request(spa_t *spa, int flag);
b128c09f 608extern void spa_async_unrequest(spa_t *spa, int flag);
34dc7c2f
BB		 609extern void spa_async_suspend(spa_t *spa);
610extern void spa_async_resume(spa_t *spa);
611extern spa_t *spa_inject_addref(char *pool);
612extern void spa_inject_delref(spa_t *spa);
428870ff
BB		 613extern void spa_scan_stat_init(spa_t *spa);
614extern int spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps);
34dc7c2f 615
b128c09f
BB		 616#define SPA_ASYNC_CONFIG_UPDATE 0x01
617#define SPA_ASYNC_REMOVE 0x02
618#define SPA_ASYNC_PROBE 0x04
619#define SPA_ASYNC_RESILVER_DONE 0x08
620#define SPA_ASYNC_RESILVER 0x10
9babb374 621#define SPA_ASYNC_AUTOEXPAND 0x20
428870ff
BB		 622#define SPA_ASYNC_REMOVE_DONE 0x40
623#define SPA_ASYNC_REMOVE_STOP 0x80
624
625/*
626 * Controls the behavior of spa_vdev_remove().
627 */
628#define SPA_REMOVE_UNSPARE 0x01
629#define SPA_REMOVE_DONE 0x02
34dc7c2f
BB		 630
631/* device manipulation */
632extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot);
633extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot,
634 int replacing);
fb5f0bc8
BB		 635extern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid,
636 int replace_done);
34dc7c2f 637extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare);
428870ff 638extern boolean_t spa_vdev_remove_active(spa_t *spa);
34dc7c2f 639extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath);
9babb374 640extern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru);
428870ff
BB		 641extern int spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config,
642 nvlist_t *props, boolean_t exp);
34dc7c2f
BB		 643
644/* spare state (which is global across all pools) */
645extern void spa_spare_add(vdev_t *vd);
646extern void spa_spare_remove(vdev_t *vd);
b128c09f 647extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt);
34dc7c2f
BB		 648extern void spa_spare_activate(vdev_t *vd);
649
650/* L2ARC state (which is global across all pools) */
651extern void spa_l2cache_add(vdev_t *vd);
652extern void spa_l2cache_remove(vdev_t *vd);
653extern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool);
654extern void spa_l2cache_activate(vdev_t *vd);
655extern void spa_l2cache_drop(spa_t *spa);
34dc7c2f 656
428870ff
BB		 657/* scanning */
658extern int spa_scan(spa_t *spa, pool_scan_func_t func);
659extern int spa_scan_stop(spa_t *spa);
34dc7c2f
BB		 660
661/* spa syncing */
662extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */
663extern void spa_sync_allpools(void);
664
55d85d5a 665extern int zfs_sync_pass_deferred_free;
428870ff 666
b128c09f
BB		 667/* spa namespace global mutex */
668extern kmutex_t spa_namespace_lock;
669
34dc7c2f
BB		 670/*
671 * SPA configuration functions in spa_config.c
672 */
673
674#define SPA_CONFIG_UPDATE_POOL 0
675#define SPA_CONFIG_UPDATE_VDEVS 1
676
b128c09f 677extern void spa_config_sync(spa_t *, boolean_t, boolean_t);
34dc7c2f
BB		 678extern void spa_config_load(void);
679extern nvlist_t *spa_all_configs(uint64_t *);
680extern void spa_config_set(spa_t *spa, nvlist_t *config);
681extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg,
682 int getstats);
683extern void spa_config_update(spa_t *spa, int what);
34dc7c2f
BB		 684
685/*
686 * Miscellaneous SPA routines in spa_misc.c
687 */
688
689/* Namespace manipulation */
690extern spa_t *spa_lookup(const char *name);
428870ff 691extern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot);
34dc7c2f
BB		 692extern void spa_remove(spa_t *spa);
693extern spa_t *spa_next(spa_t *prev);
694
695/* Refcount functions */
696extern void spa_open_ref(spa_t *spa, void *tag);
697extern void spa_close(spa_t *spa, void *tag);
0c66c32d 698extern void spa_async_close(spa_t *spa, void *tag);
34dc7c2f
BB		 699extern boolean_t spa_refcount_zero(spa_t *spa);
700
428870ff 701#define SCL_NONE 0x00
b128c09f
BB		 702#define SCL_CONFIG 0x01
703#define SCL_STATE 0x02
704#define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */
705#define SCL_ALLOC 0x08
706#define SCL_ZIO 0x10
707#define SCL_FREE 0x20
708#define SCL_VDEV 0x40
709#define SCL_LOCKS 7
710#define SCL_ALL ((1 << SCL_LOCKS) - 1)
711#define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO)
712
1421c891
PS		 713/* Historical pool statistics */
714typedef struct spa_stats_history {
715 kmutex_t lock;
716 uint64_t count;
717 uint64_t size;
718 kstat_t *kstat;
719 void *private;
720 list_t list;
721} spa_stats_history_t;
722
723typedef struct spa_stats {
724 spa_stats_history_t read_history;
0b1401ee 725 spa_stats_history_t txg_history;
2d37239a 726 spa_stats_history_t tx_assign_histogram;
330847ff 727 spa_stats_history_t io_history;
1421c891
PS		 728} spa_stats_t;
729
0b1401ee
BB		 730typedef enum txg_state {
731 TXG_STATE_BIRTH = 0,
732 TXG_STATE_OPEN = 1,
733 TXG_STATE_QUIESCED = 2,
478d64fd
IL		 734 TXG_STATE_WAIT_FOR_SYNC = 3,
735 TXG_STATE_SYNCED = 4,
736 TXG_STATE_COMMITTED = 5,
0b1401ee
BB		 737} txg_state_t;
738
baf67d15
BB		 739typedef struct txg_stat {
740 vdev_stat_t vs1;
741 vdev_stat_t vs2;
742 uint64_t txg;
743 uint64_t ndirty;
744} txg_stat_t;
745
1421c891
PS		 746extern void spa_stats_init(spa_t *spa);
747extern void spa_stats_destroy(spa_t *spa);
5dbd68a3 748extern void spa_read_history_add(spa_t *spa, const zbookmark_phys_t *zb,
1421c891 749 uint32_t aflags);
01b738f4 750extern void spa_txg_history_add(spa_t *spa, uint64_t txg, hrtime_t birth_time);
0b1401ee
BB		 751extern int spa_txg_history_set(spa_t *spa, uint64_t txg,
752 txg_state_t completed_state, hrtime_t completed_time);
baf67d15
BB		 753extern txg_stat_t *spa_txg_history_init_io(spa_t *, uint64_t,
754 struct dsl_pool *);
755extern void spa_txg_history_fini_io(spa_t *, txg_stat_t *);
2d37239a 756extern void spa_tx_assign_add_nsecs(spa_t *spa, uint64_t nsecs);
1421c891 757
b128c09f
BB		 758/* Pool configuration locks */
759extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw);
760extern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw);
761extern void spa_config_exit(spa_t *spa, int locks, void *tag);
762extern int spa_config_held(spa_t *spa, int locks, krw_t rw);
34dc7c2f
BB		 763
764/* Pool vdev add/remove lock */
765extern uint64_t spa_vdev_enter(spa_t *spa);
428870ff
BB		 766extern uint64_t spa_vdev_config_enter(spa_t *spa);
767extern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg,
768 int error, char *tag);
34dc7c2f
BB		 769extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error);
770
b128c09f 771/* Pool vdev state change lock */
428870ff 772extern void spa_vdev_state_enter(spa_t *spa, int oplock);
b128c09f
BB		 773extern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error);
774
428870ff
BB		 775/* Log state */
776typedef enum spa_log_state {
777 SPA_LOG_UNKNOWN = 0, /* unknown log state */
778 SPA_LOG_MISSING, /* missing log(s) */
779 SPA_LOG_CLEAR, /* clear the log(s) */
780 SPA_LOG_GOOD, /* log(s) are good */
781} spa_log_state_t;
782
783extern spa_log_state_t spa_get_log_state(spa_t *spa);
784extern void spa_set_log_state(spa_t *spa, spa_log_state_t state);
785extern int spa_offline_log(spa_t *spa);
786
787/* Log claim callback */
788extern void spa_claim_notify(zio_t *zio);
cc92e9d0 789extern void spa_deadman(void *);
428870ff 790
34dc7c2f 791/* Accessor functions */
b128c09f 792extern boolean_t spa_shutting_down(spa_t *spa);
34dc7c2f 793extern struct dsl_pool *spa_get_dsl(spa_t *spa);
9ae529ec 794extern boolean_t spa_is_initializing(spa_t *spa);
34dc7c2f
BB		 795extern blkptr_t *spa_get_rootblkptr(spa_t *spa);
796extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp);
797extern void spa_altroot(spa_t *, char *, size_t);
798extern int spa_sync_pass(spa_t *spa);
799extern char *spa_name(spa_t *spa);
800extern uint64_t spa_guid(spa_t *spa);
3541dc6d 801extern uint64_t spa_load_guid(spa_t *spa);
34dc7c2f
BB		 802extern uint64_t spa_last_synced_txg(spa_t *spa);
803extern uint64_t spa_first_txg(spa_t *spa);
428870ff 804extern uint64_t spa_syncing_txg(spa_t *spa);
3b7f360c 805extern uint64_t spa_final_dirty_txg(spa_t *spa);
34dc7c2f 806extern uint64_t spa_version(spa_t *spa);
b128c09f 807extern pool_state_t spa_state(spa_t *spa);
428870ff 808extern spa_load_state_t spa_load_state(spa_t *spa);
34dc7c2f 809extern uint64_t spa_freeze_txg(spa_t *spa);
3ec3bc21 810extern uint64_t spa_get_worst_case_asize(spa_t *spa, uint64_t lsize);
428870ff 811extern uint64_t spa_get_dspace(spa_t *spa);
0c60cc32 812extern uint64_t spa_get_slop_space(spa_t *spa);
428870ff 813extern void spa_update_dspace(spa_t *spa);
34dc7c2f 814extern uint64_t spa_version(spa_t *spa);
428870ff
BB		 815extern boolean_t spa_deflate(spa_t *spa);
816extern metaslab_class_t *spa_normal_class(spa_t *spa);
817extern metaslab_class_t *spa_log_class(spa_t *spa);
0c66c32d
JG		 818extern void spa_evicting_os_register(spa_t *, objset_t *os);
819extern void spa_evicting_os_deregister(spa_t *, objset_t *os);
820extern void spa_evicting_os_wait(spa_t *spa);
34dc7c2f 821extern int spa_max_replication(spa_t *spa);
428870ff 822extern int spa_prev_software_version(spa_t *spa);
34dc7c2f 823extern uint8_t spa_get_failmode(spa_t *spa);
b128c09f 824extern boolean_t spa_suspended(spa_t *spa);
428870ff
BB		 825extern uint64_t spa_bootfs(spa_t *spa);
826extern uint64_t spa_delegation(spa_t *spa);
827extern objset_t *spa_meta_objset(spa_t *spa);
cc92e9d0 828extern uint64_t spa_deadman_synctime(spa_t *spa);
34dc7c2f
BB		 829
830/* Miscellaneous support routines */
b0bc7a84
MG		 831extern void spa_activate_mos_feature(spa_t *spa, const char *feature,
832 dmu_tx_t *tx);
9ae529ec 833extern void spa_deactivate_mos_feature(spa_t *spa, const char *feature);
34dc7c2f 834extern int spa_rename(const char *oldname, const char *newname);
572e2857 835extern spa_t *spa_by_guid(uint64_t pool_guid, uint64_t device_guid);
34dc7c2f
BB		 836extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid);
837extern char *spa_strdup(const char *);
838extern void spa_strfree(char *);
839extern uint64_t spa_get_random(uint64_t range);
428870ff 840extern uint64_t spa_generate_guid(spa_t *spa);
b0bc7a84 841extern void snprintf_blkptr(char *buf, size_t buflen, const blkptr_t *bp);
34dc7c2f 842extern void spa_freeze(spa_t *spa);
3541dc6d 843extern int spa_change_guid(spa_t *spa);
34dc7c2f
BB		 844extern void spa_upgrade(spa_t *spa, uint64_t version);
845extern void spa_evict_all(void);
b128c09f
BB		 846extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid,
847 boolean_t l2cache);
34dc7c2f 848extern boolean_t spa_has_spare(spa_t *, uint64_t guid);
428870ff
BB		 849extern uint64_t dva_get_dsize_sync(spa_t *spa, const dva_t *dva);
850extern uint64_t bp_get_dsize_sync(spa_t *spa, const blkptr_t *bp);
851extern uint64_t bp_get_dsize(spa_t *spa, const blkptr_t *bp);
34dc7c2f 852extern boolean_t spa_has_slogs(spa_t *spa);
b128c09f 853extern boolean_t spa_is_root(spa_t *spa);
fb5f0bc8 854extern boolean_t spa_writeable(spa_t *spa);
acbad6ff 855extern boolean_t spa_has_pending_synctask(spa_t *spa);
f1512ee6 856extern int spa_maxblocksize(spa_t *spa);
50c957f7 857extern int spa_maxdnodesize(spa_t *spa);
63e3a861 858extern void zfs_blkptr_verify(spa_t *spa, const blkptr_t *bp);
428870ff 859
fb5f0bc8 860extern int spa_mode(spa_t *spa);
428870ff 861extern uint64_t strtonum(const char *str, char **nptr);
34dc7c2f 862
34dc7c2f
BB		 863extern char *spa_his_ievent_table[];
864
865extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx);
866extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read,
867 char *his_buf);
6f1ffb06
MA		 868extern int spa_history_log(spa_t *spa, const char *his_buf);
869extern int spa_history_log_nvl(spa_t *spa, nvlist_t *nvl);
870extern void spa_history_log_version(spa_t *spa, const char *operation);
871extern void spa_history_log_internal(spa_t *spa, const char *operation,
872 dmu_tx_t *tx, const char *fmt, ...);
873extern void spa_history_log_internal_ds(struct dsl_dataset *ds, const char *op,
874 dmu_tx_t *tx, const char *fmt, ...);
875extern void spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation,
876 dmu_tx_t *tx, const char *fmt, ...);
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BB		 877
878/* error handling */
5dbd68a3 879struct zbookmark_phys;
428870ff 880extern void spa_log_error(spa_t *spa, zio_t *zio);
34dc7c2f 881extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
428870ff 882 zio_t *zio, uint64_t stateoroffset, uint64_t length);
34dc7c2f 883extern void zfs_post_remove(spa_t *spa, vdev_t *vd);
d02ca379 884extern void zfs_post_state_change(spa_t *spa, vdev_t *vd, uint64_t laststate);
34dc7c2f 885extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd);
fb390aaf 886extern void zfs_post_sysevent(spa_t *spa, vdev_t *vd, const char *name);
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BB		 887extern uint64_t spa_get_errlog_size(spa_t *spa);
888extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count);
889extern void spa_errlog_rotate(spa_t *spa);
890extern void spa_errlog_drain(spa_t *spa);
891extern void spa_errlog_sync(spa_t *spa, uint64_t txg);
892extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub);
893
894/* vdev cache */
895extern void vdev_cache_stat_init(void);
896extern void vdev_cache_stat_fini(void);
897
898/* Initialization and termination */
899extern void spa_init(int flags);
900extern void spa_fini(void);
0bc8fd78 901extern void spa_boot_init(void);
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BB		 902
903/* properties */
904extern int spa_prop_set(spa_t *spa, nvlist_t *nvp);
905extern int spa_prop_get(spa_t *spa, nvlist_t **nvp);
906extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx);
d164b209 907extern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t);
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BB		 908
909/* asynchronous event notification */
910extern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name);
911
912#ifdef ZFS_DEBUG
79c76d5b
BB		 913#define dprintf_bp(bp, fmt, ...) do { \
914 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
915 char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \
916 snprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \
917 dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \
918 kmem_free(__blkbuf, BP_SPRINTF_LEN); \
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BB		 919 } \
920_NOTE(CONSTCOND) } while (0)
921#else
922#define dprintf_bp(bp, fmt, ...)
923#endif
924
6d974228
GW		 925extern boolean_t spa_debug_enabled(spa_t *spa);
926#define spa_dbgmsg(spa, ...) \
927{ \
928 if (spa_debug_enabled(spa)) \
929 zfs_dbgmsg(__VA_ARGS__); \
930}
931
fb5f0bc8 932extern int spa_mode_global; /* mode, e.g. FREAD | FWRITE */
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BB		 933
934#ifdef __cplusplus
935}
936#endif
937
938#endif /* _SYS_SPA_H */
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