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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.
0ea05c64 27 * Copyright (c) 2017 Datto Inc.
34dc7c2f
BB		 28 */
29
30#ifndef _SYS_SPA_H
31#define _SYS_SPA_H
32
34dc7c2f
BB		 33#include <sys/avl.h>
34#include <sys/zfs_context.h>
efcd79a8 35#include <sys/kstat.h>
34dc7c2f
BB		 36#include <sys/nvpair.h>
37#include <sys/sysmacros.h>
38#include <sys/types.h>
39#include <sys/fs/zfs.h>
1eeb4562 40#include <sys/spa_checksum.h>
c4434877 41#include <sys/dmu.h>
34dc7c2f
BB		 42
43#ifdef __cplusplus
44extern "C" {
45#endif
46
47/*
48 * Forward references that lots of things need.
49 */
50typedef struct spa spa_t;
51typedef struct vdev vdev_t;
52typedef struct metaslab metaslab_t;
428870ff
BB		 53typedef struct metaslab_group metaslab_group_t;
54typedef struct metaslab_class metaslab_class_t;
55typedef struct zio zio_t;
34dc7c2f 56typedef struct zilog zilog_t;
34dc7c2f 57typedef struct spa_aux_vdev spa_aux_vdev_t;
428870ff
BB		 58typedef struct ddt ddt_t;
59typedef struct ddt_entry ddt_entry_t;
5dbd68a3 60typedef struct zbookmark_phys zbookmark_phys_t;
1421c891 61
34dc7c2f 62struct dsl_pool;
6f1ffb06 63struct dsl_dataset;
34dc7c2f
BB		 64
65/*
66 * General-purpose 32-bit and 64-bit bitfield encodings.
67 */
68#define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len))
69#define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len))
70#define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low))
71#define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low))
72
73#define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
74#define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
75
b0bc7a84
MG		 76#define BF32_SET(x, low, len, val) do { \
77 ASSERT3U(val, <, 1U << (len)); \
78 ASSERT3U(low + len, <=, 32); \
79 (x) ^= BF32_ENCODE((x >> low) ^ (val), low, len); \
80_NOTE(CONSTCOND) } while (0)
81
82#define BF64_SET(x, low, len, val) do { \
83 ASSERT3U(val, <, 1ULL << (len)); \
84 ASSERT3U(low + len, <=, 64); \
85 ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)); \
86_NOTE(CONSTCOND) } while (0)
34dc7c2f
BB		 87
88#define BF32_GET_SB(x, low, len, shift, bias) \
89 ((BF32_GET(x, low, len) + (bias)) << (shift))
90#define BF64_GET_SB(x, low, len, shift, bias) \
91 ((BF64_GET(x, low, len) + (bias)) << (shift))
92
b0bc7a84
MG		 93#define BF32_SET_SB(x, low, len, shift, bias, val) do { \
94 ASSERT(IS_P2ALIGNED(val, 1U << shift)); \
95 ASSERT3S((val) >> (shift), >=, bias); \
96 BF32_SET(x, low, len, ((val) >> (shift)) - (bias)); \
97_NOTE(CONSTCOND) } while (0)
98#define BF64_SET_SB(x, low, len, shift, bias, val) do { \
99 ASSERT(IS_P2ALIGNED(val, 1ULL << shift)); \
100 ASSERT3S((val) >> (shift), >=, bias); \
101 BF64_SET(x, low, len, ((val) >> (shift)) - (bias)); \
102_NOTE(CONSTCOND) } while (0)
34dc7c2f
BB		 103
104/*
f1512ee6
MA		 105 * We currently support block sizes from 512 bytes to 16MB.
106 * The benefits of larger blocks, and thus larger IO, need to be weighed
107 * against the cost of COWing a giant block to modify one byte, and the
108 * large latency of reading or writing a large block.
109 *
110 * Note that although blocks up to 16MB are supported, the recordsize
111 * property can not be set larger than zfs_max_recordsize (default 1MB).
112 * See the comment near zfs_max_recordsize in dsl_dataset.c for details.
113 *
114 * Note that although the LSIZE field of the blkptr_t can store sizes up
115 * to 32MB, the dnode's dn_datablkszsec can only store sizes up to
116 * 32MB - 512 bytes. Therefore, we limit SPA_MAXBLOCKSIZE to 16MB.
34dc7c2f
BB		 117 */
118#define SPA_MINBLOCKSHIFT 9
f1512ee6
MA		 119#define SPA_OLD_MAXBLOCKSHIFT 17
120#define SPA_MAXBLOCKSHIFT 24
34dc7c2f 121#define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT)
f1512ee6 122#define SPA_OLD_MAXBLOCKSIZE (1ULL << SPA_OLD_MAXBLOCKSHIFT)
34dc7c2f
BB		 123#define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT)
124
ff61d1a4 125/*
126 * Alignment Shift (ashift) is an immutable, internal top-level vdev property
127 * which can only be set at vdev creation time. Physical writes are always done
128 * according to it, which makes 2^ashift the smallest possible IO on a vdev.
129 *
dddef7d6 130 * We currently allow values ranging from 512 bytes (2^9 = 512) to 64 KiB
131 * (2^16 = 65,536).
ff61d1a4 132 */
133#define ASHIFT_MIN 9
dddef7d6 134#define ASHIFT_MAX 16
ff61d1a4 135
b128c09f
BB		 136/*
137 * Size of block to hold the configuration data (a packed nvlist)
138 */
9ae529ec 139#define SPA_CONFIG_BLOCKSIZE (1ULL << 14)
b128c09f 140
34dc7c2f
BB		 141/*
142 * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
143 * The ASIZE encoding should be at least 64 times larger (6 more bits)
144 * to support up to 4-way RAID-Z mirror mode with worst-case gang block
145 * overhead, three DVAs per bp, plus one more bit in case we do anything
146 * else that expands the ASIZE.
147 */
148#define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */
149#define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */
150#define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */
151
d3c2ae1c
GW		 152#define SPA_COMPRESSBITS 7
153
34dc7c2f
BB		 154/*
155 * All SPA data is represented by 128-bit data virtual addresses (DVAs).
156 * The members of the dva_t should be considered opaque outside the SPA.
157 */
158typedef struct dva {
159 uint64_t dva_word[2];
160} dva_t;
161
34dc7c2f 162
3c67d83a
TH		 163/*
164 * Some checksums/hashes need a 256-bit initialization salt. This salt is kept
165 * secret and is suitable for use in MAC algorithms as the key.
166 */
167typedef struct zio_cksum_salt {
168 uint8_t zcs_bytes[32];
169} zio_cksum_salt_t;
170
34dc7c2f
BB		 171/*
172 * Each block is described by its DVAs, time of birth, checksum, etc.
173 * The word-by-word, bit-by-bit layout of the blkptr is as follows:
174 *
175 * 64 56 48 40 32 24 16 8 0
176 * +-------+-------+-------+-------+-------+-------+-------+-------+
177 * 0 | vdev1 | GRID | ASIZE |
178 * +-------+-------+-------+-------+-------+-------+-------+-------+
179 * 1 |G| offset1 |
180 * +-------+-------+-------+-------+-------+-------+-------+-------+
181 * 2 | vdev2 | GRID | ASIZE |
182 * +-------+-------+-------+-------+-------+-------+-------+-------+
183 * 3 |G| offset2 |
184 * +-------+-------+-------+-------+-------+-------+-------+-------+
185 * 4 | vdev3 | GRID | ASIZE |
186 * +-------+-------+-------+-------+-------+-------+-------+-------+
187 * 5 |G| offset3 |
188 * +-------+-------+-------+-------+-------+-------+-------+-------+
9b67f605 189 * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE |
34dc7c2f
BB		 190 * +-------+-------+-------+-------+-------+-------+-------+-------+
191 * 7 | padding |
192 * +-------+-------+-------+-------+-------+-------+-------+-------+
193 * 8 | padding |
194 * +-------+-------+-------+-------+-------+-------+-------+-------+
428870ff 195 * 9 | physical birth txg |
34dc7c2f 196 * +-------+-------+-------+-------+-------+-------+-------+-------+
428870ff 197 * a | logical birth txg |
34dc7c2f
BB		 198 * +-------+-------+-------+-------+-------+-------+-------+-------+
199 * b | fill count |
200 * +-------+-------+-------+-------+-------+-------+-------+-------+
201 * c | checksum[0] |
202 * +-------+-------+-------+-------+-------+-------+-------+-------+
203 * d | checksum[1] |
204 * +-------+-------+-------+-------+-------+-------+-------+-------+
205 * e | checksum[2] |
206 * +-------+-------+-------+-------+-------+-------+-------+-------+
207 * f | checksum[3] |
208 * +-------+-------+-------+-------+-------+-------+-------+-------+
209 *
210 * Legend:
211 *
212 * vdev virtual device ID
213 * offset offset into virtual device
214 * LSIZE logical size
215 * PSIZE physical size (after compression)
216 * ASIZE allocated size (including RAID-Z parity and gang block headers)
217 * GRID RAID-Z layout information (reserved for future use)
218 * cksum checksum function
219 * comp compression function
220 * G gang block indicator
428870ff
BB		 221 * B byteorder (endianness)
222 * D dedup
9b67f605
MA		 223 * X encryption (on version 30, which is not supported)
224 * E blkptr_t contains embedded data (see below)
34dc7c2f 225 * lvl level of indirection
428870ff
BB		 226 * type DMU object type
227 * phys birth txg of block allocation; zero if same as logical birth txg
228 * log. birth transaction group in which the block was logically born
34dc7c2f
BB		 229 * fill count number of non-zero blocks under this bp
230 * checksum[4] 256-bit checksum of the data this bp describes
231 */
9b67f605
MA		 232
233/*
234 * "Embedded" blkptr_t's don't actually point to a block, instead they
235 * have a data payload embedded in the blkptr_t itself. See the comment
236 * in blkptr.c for more details.
237 *
238 * The blkptr_t is laid out as follows:
239 *
240 * 64 56 48 40 32 24 16 8 0
241 * +-------+-------+-------+-------+-------+-------+-------+-------+
242 * 0 | payload |
243 * 1 | payload |
244 * 2 | payload |
245 * 3 | payload |
246 * 4 | payload |
247 * 5 | payload |
248 * +-------+-------+-------+-------+-------+-------+-------+-------+
249 * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE |
250 * +-------+-------+-------+-------+-------+-------+-------+-------+
251 * 7 | payload |
252 * 8 | payload |
253 * 9 | payload |
254 * +-------+-------+-------+-------+-------+-------+-------+-------+
255 * a | logical birth txg |
256 * +-------+-------+-------+-------+-------+-------+-------+-------+
257 * b | payload |
258 * c | payload |
259 * d | payload |
260 * e | payload |
261 * f | payload |
262 * +-------+-------+-------+-------+-------+-------+-------+-------+
263 *
264 * Legend:
265 *
266 * payload contains the embedded data
267 * B (byteorder) byteorder (endianness)
268 * D (dedup) padding (set to zero)
269 * X encryption (set to zero; see above)
270 * E (embedded) set to one
271 * lvl indirection level
272 * type DMU object type
273 * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*)
274 * comp compression function of payload
275 * PSIZE size of payload after compression, in bytes
276 * LSIZE logical size of payload, in bytes
277 * note that 25 bits is enough to store the largest
278 * "normal" BP's LSIZE (2^16 * 2^9) in bytes
279 * log. birth transaction group in which the block was logically born
280 *
281 * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded
282 * bp's they are stored in units of SPA_MINBLOCKSHIFT.
283 * Generally, the generic BP_GET_*() macros can be used on embedded BP's.
284 * The B, D, X, lvl, type, and comp fields are stored the same as with normal
285 * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must
286 * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before
287 * other macros, as they assert that they are only used on BP's of the correct
288 * "embedded-ness".
289 */
290
291#define BPE_GET_ETYPE(bp) \
292 (ASSERT(BP_IS_EMBEDDED(bp)), \
293 BF64_GET((bp)->blk_prop, 40, 8))
294#define BPE_SET_ETYPE(bp, t) do { \
295 ASSERT(BP_IS_EMBEDDED(bp)); \
296 BF64_SET((bp)->blk_prop, 40, 8, t); \
297_NOTE(CONSTCOND) } while (0)
298
299#define BPE_GET_LSIZE(bp) \
300 (ASSERT(BP_IS_EMBEDDED(bp)), \
301 BF64_GET_SB((bp)->blk_prop, 0, 25, 0, 1))
302#define BPE_SET_LSIZE(bp, x) do { \
303 ASSERT(BP_IS_EMBEDDED(bp)); \
304 BF64_SET_SB((bp)->blk_prop, 0, 25, 0, 1, x); \
305_NOTE(CONSTCOND) } while (0)
306
307#define BPE_GET_PSIZE(bp) \
308 (ASSERT(BP_IS_EMBEDDED(bp)), \
309 BF64_GET_SB((bp)->blk_prop, 25, 7, 0, 1))
310#define BPE_SET_PSIZE(bp, x) do { \
311 ASSERT(BP_IS_EMBEDDED(bp)); \
312 BF64_SET_SB((bp)->blk_prop, 25, 7, 0, 1, x); \
313_NOTE(CONSTCOND) } while (0)
314
315typedef enum bp_embedded_type {
316 BP_EMBEDDED_TYPE_DATA,
317 BP_EMBEDDED_TYPE_RESERVED, /* Reserved for an unintegrated feature. */
318 NUM_BP_EMBEDDED_TYPES = BP_EMBEDDED_TYPE_RESERVED
319} bp_embedded_type_t;
320
321#define BPE_NUM_WORDS 14
322#define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t))
323#define BPE_IS_PAYLOADWORD(bp, wp) \
324 ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth)
325
34dc7c2f
BB		 326#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
327#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
328
b0bc7a84
MG		 329/*
330 * A block is a hole when it has either 1) never been written to, or
331 * 2) is zero-filled. In both cases, ZFS can return all zeroes for all reads
332 * without physically allocating disk space. Holes are represented in the
333 * blkptr_t structure by zeroed blk_dva. Correct checking for holes is
334 * done through the BP_IS_HOLE macro. For holes, the logical size, level,
335 * DMU object type, and birth times are all also stored for holes that
336 * were written to at some point (i.e. were punched after having been filled).
337 */
428870ff
BB		 338typedef struct blkptr {
339 dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */
340 uint64_t blk_prop; /* size, compression, type, etc */
341 uint64_t blk_pad[2]; /* Extra space for the future */
342 uint64_t blk_phys_birth; /* txg when block was allocated */
343 uint64_t blk_birth; /* transaction group at birth */
344 uint64_t blk_fill; /* fill count */
345 zio_cksum_t blk_cksum; /* 256-bit checksum */
346} blkptr_t;
347
34dc7c2f
BB		 348/*
349 * Macros to get and set fields in a bp or DVA.
350 */
351#define DVA_GET_ASIZE(dva) \
b0bc7a84 352 BF64_GET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, SPA_MINBLOCKSHIFT, 0)
34dc7c2f 353#define DVA_SET_ASIZE(dva, x) \
b0bc7a84
MG		 354 BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \
355 SPA_MINBLOCKSHIFT, 0, x)
34dc7c2f
BB		 356
357#define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8)
358#define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x)
359
360#define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32)
361#define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x)
362
363#define DVA_GET_OFFSET(dva) \
364 BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0)
365#define DVA_SET_OFFSET(dva, x) \
366 BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x)
367
368#define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1)
369#define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
370
371#define BP_GET_LSIZE(bp) \
9b67f605
MA		 372 (BP_IS_EMBEDDED(bp) ? \
373 (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \
374 BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1))
375#define BP_SET_LSIZE(bp, x) do { \
376 ASSERT(!BP_IS_EMBEDDED(bp)); \
377 BF64_SET_SB((bp)->blk_prop, \
378 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
379_NOTE(CONSTCOND) } while (0)
34dc7c2f
BB		 380
381#define BP_GET_PSIZE(bp) \
9b67f605
MA		 382 (BP_IS_EMBEDDED(bp) ? 0 : \
383 BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1))
384#define BP_SET_PSIZE(bp, x) do { \
385 ASSERT(!BP_IS_EMBEDDED(bp)); \
386 BF64_SET_SB((bp)->blk_prop, \
387 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
388_NOTE(CONSTCOND) } while (0)
389
d3c2ae1c
GW		 390#define BP_GET_COMPRESS(bp) \
391 BF64_GET((bp)->blk_prop, 32, SPA_COMPRESSBITS)
392#define BP_SET_COMPRESS(bp, x) \
393 BF64_SET((bp)->blk_prop, 32, SPA_COMPRESSBITS, x)
34dc7c2f 394
9b67f605
MA		 395#define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1)
396#define BP_SET_EMBEDDED(bp, x) BF64_SET((bp)->blk_prop, 39, 1, x)
428870ff 397
9b67f605
MA		 398#define BP_GET_CHECKSUM(bp) \
399 (BP_IS_EMBEDDED(bp) ? ZIO_CHECKSUM_OFF : \
400 BF64_GET((bp)->blk_prop, 40, 8))
401#define BP_SET_CHECKSUM(bp, x) do { \
402 ASSERT(!BP_IS_EMBEDDED(bp)); \
403 BF64_SET((bp)->blk_prop, 40, 8, x); \
404_NOTE(CONSTCOND) } while (0)
34dc7c2f 405
428870ff
BB		 406#define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
407#define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
34dc7c2f 408
428870ff
BB		 409#define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
410#define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
34dc7c2f 411
428870ff
BB		 412#define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1)
413#define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x)
414
b0bc7a84 415#define BP_GET_BYTEORDER(bp) BF64_GET((bp)->blk_prop, 63, 1)
428870ff
BB		 416#define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
417
418#define BP_PHYSICAL_BIRTH(bp) \
9b67f605
MA		 419 (BP_IS_EMBEDDED(bp) ? 0 : \
420 (bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
428870ff
BB		 421
422#define BP_SET_BIRTH(bp, logical, physical) \
423{ \
9b67f605 424 ASSERT(!BP_IS_EMBEDDED(bp)); \
428870ff
BB		 425 (bp)->blk_birth = (logical); \
426 (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
427}
34dc7c2f 428
9b67f605
MA		 429#define BP_GET_FILL(bp) (BP_IS_EMBEDDED(bp) ? 1 : (bp)->blk_fill)
430
a6255b7f
DQ		 431#define BP_IS_METADATA(bp) \
432 (BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
433
34dc7c2f 434#define BP_GET_ASIZE(bp) \
9b67f605
MA		 435 (BP_IS_EMBEDDED(bp) ? 0 : \
436 DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
437 DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
438 DVA_GET_ASIZE(&(bp)->blk_dva[2]))
34dc7c2f 439
a6255b7f
DQ		 440#define BP_GET_UCSIZE(bp) \
441 (BP_IS_METADATA(bp) ? BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp))
34dc7c2f
BB		 442
443#define BP_GET_NDVAS(bp) \
9b67f605
MA		 444 (BP_IS_EMBEDDED(bp) ? 0 : \
445 !!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
34dc7c2f
BB		 446 !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
447 !!DVA_GET_ASIZE(&(bp)->blk_dva[2]))
448
449#define BP_COUNT_GANG(bp) \
9b67f605 450 (BP_IS_EMBEDDED(bp) ? 0 : \
34dc7c2f
BB		 451 (DVA_GET_GANG(&(bp)->blk_dva[0]) + \
452 DVA_GET_GANG(&(bp)->blk_dva[1]) + \
9b67f605 453 DVA_GET_GANG(&(bp)->blk_dva[2])))
34dc7c2f
BB		 454
455#define DVA_EQUAL(dva1, dva2) \
456 ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
457 (dva1)->dva_word[0] == (dva2)->dva_word[0])
458
428870ff
BB		 459#define BP_EQUAL(bp1, bp2) \
460 (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \
9b67f605 461 (bp1)->blk_birth == (bp2)->blk_birth && \
428870ff
BB		 462 DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \
463 DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \
464 DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2]))
465
37f8a883 466
34dc7c2f
BB		 467#define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0)
468
9b67f605
MA		 469#define BP_IDENTITY(bp) (ASSERT(!BP_IS_EMBEDDED(bp)), &(bp)->blk_dva[0])
470#define BP_IS_GANG(bp) \
471 (BP_IS_EMBEDDED(bp) ? B_FALSE : DVA_GET_GANG(BP_IDENTITY(bp)))
b0bc7a84
MG		 472#define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \
473 (dva)->dva_word[1] == 0ULL)
9b67f605
MA		 474#define BP_IS_HOLE(bp) \
475 (!BP_IS_EMBEDDED(bp) && DVA_IS_EMPTY(BP_IDENTITY(bp)))
428870ff
BB		 476
477/* BP_IS_RAIDZ(bp) assumes no block compression */
478#define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \
479 BP_GET_PSIZE(bp))
34dc7c2f 480
b128c09f 481#define BP_ZERO(bp) \
34dc7c2f
BB		 482{ \
483 (bp)->blk_dva[0].dva_word[0] = 0; \
484 (bp)->blk_dva[0].dva_word[1] = 0; \
485 (bp)->blk_dva[1].dva_word[0] = 0; \
486 (bp)->blk_dva[1].dva_word[1] = 0; \
487 (bp)->blk_dva[2].dva_word[0] = 0; \
488 (bp)->blk_dva[2].dva_word[1] = 0; \
34dc7c2f
BB		 489 (bp)->blk_prop = 0; \
490 (bp)->blk_pad[0] = 0; \
491 (bp)->blk_pad[1] = 0; \
428870ff 492 (bp)->blk_phys_birth = 0; \
b128c09f 493 (bp)->blk_birth = 0; \
34dc7c2f
BB		 494 (bp)->blk_fill = 0; \
495 ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \
496}
497
34dc7c2f
BB		 498#ifdef _BIG_ENDIAN
499#define ZFS_HOST_BYTEORDER (0ULL)
500#else
b0bc7a84 501#define ZFS_HOST_BYTEORDER (1ULL)
34dc7c2f
BB		 502#endif
503
504#define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER)
505
506#define BP_SPRINTF_LEN 320
507
428870ff
BB		 508/*
509 * This macro allows code sharing between zfs, libzpool, and mdb.
510 * 'func' is either snprintf() or mdb_snprintf().
511 * 'ws' (whitespace) can be ' ' for single-line format, '\n' for multi-line.
512 */
b0bc7a84 513#define SNPRINTF_BLKPTR(func, ws, buf, size, bp, type, checksum, compress) \
428870ff
BB		 514{ \
515 static const char *copyname[] = \
516 { "zero", "single", "double", "triple" }; \
428870ff
BB		 517 int len = 0; \
518 int copies = 0; \
d6320ddb 519 int d; \
428870ff
BB		 520 \
521 if (bp == NULL) { \
b0bc7a84 522 len += func(buf + len, size - len, "<NULL>"); \
428870ff 523 } else if (BP_IS_HOLE(bp)) { \
a4069eef
PS		 524 len += func(buf + len, size - len, \
525 "HOLE [L%llu %s] " \
526 "size=%llxL birth=%lluL", \
527 (u_longlong_t)BP_GET_LEVEL(bp), \
528 type, \
529 (u_longlong_t)BP_GET_LSIZE(bp), \
530 (u_longlong_t)bp->blk_birth); \
9b67f605
MA		 531 } else if (BP_IS_EMBEDDED(bp)) { \
532 len = func(buf + len, size - len, \
533 "EMBEDDED [L%llu %s] et=%u %s " \
534 "size=%llxL/%llxP birth=%lluL", \
535 (u_longlong_t)BP_GET_LEVEL(bp), \
536 type, \
537 (int)BPE_GET_ETYPE(bp), \
538 compress, \
539 (u_longlong_t)BPE_GET_LSIZE(bp), \
540 (u_longlong_t)BPE_GET_PSIZE(bp), \
541 (u_longlong_t)bp->blk_birth); \
428870ff 542 } else { \
d6320ddb 543 for (d = 0; d < BP_GET_NDVAS(bp); d++) { \
428870ff
BB		 544 const dva_t *dva = &bp->blk_dva[d]; \
545 if (DVA_IS_VALID(dva)) \
546 copies++; \
547 len += func(buf + len, size - len, \
548 "DVA[%d]=<%llu:%llx:%llx>%c", d, \
549 (u_longlong_t)DVA_GET_VDEV(dva), \
550 (u_longlong_t)DVA_GET_OFFSET(dva), \
551 (u_longlong_t)DVA_GET_ASIZE(dva), \
552 ws); \
553 } \
554 if (BP_IS_GANG(bp) && \
555 DVA_GET_ASIZE(&bp->blk_dva[2]) <= \
556 DVA_GET_ASIZE(&bp->blk_dva[1]) / 2) \
557 copies--; \
558 len += func(buf + len, size - len, \
559 "[L%llu %s] %s %s %s %s %s %s%c" \
560 "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \
561 "cksum=%llx:%llx:%llx:%llx", \
562 (u_longlong_t)BP_GET_LEVEL(bp), \
563 type, \
564 checksum, \
565 compress, \
566 BP_GET_BYTEORDER(bp) == 0 ? "BE" : "LE", \
567 BP_IS_GANG(bp) ? "gang" : "contiguous", \
568 BP_GET_DEDUP(bp) ? "dedup" : "unique", \
569 copyname[copies], \
570 ws, \
571 (u_longlong_t)BP_GET_LSIZE(bp), \
572 (u_longlong_t)BP_GET_PSIZE(bp), \
573 (u_longlong_t)bp->blk_birth, \
574 (u_longlong_t)BP_PHYSICAL_BIRTH(bp), \
9b67f605 575 (u_longlong_t)BP_GET_FILL(bp), \
428870ff
BB		 576 ws, \
577 (u_longlong_t)bp->blk_cksum.zc_word[0], \
578 (u_longlong_t)bp->blk_cksum.zc_word[1], \
579 (u_longlong_t)bp->blk_cksum.zc_word[2], \
580 (u_longlong_t)bp->blk_cksum.zc_word[3]); \
581 } \
582 ASSERT(len < size); \
583}
584
34dc7c2f 585#define BP_GET_BUFC_TYPE(bp) \
a6255b7f 586 (BP_IS_METADATA(bp) ? ARC_BUFC_METADATA : ARC_BUFC_DATA)
428870ff
BB		 587
588typedef enum spa_import_type {
589 SPA_IMPORT_EXISTING,
590 SPA_IMPORT_ASSEMBLE
591} spa_import_type_t;
34dc7c2f
BB		 592
593/* state manipulation functions */
594extern int spa_open(const char *pool, spa_t **, void *tag);
428870ff
BB		 595extern int spa_open_rewind(const char *pool, spa_t **, void *tag,
596 nvlist_t *policy, nvlist_t **config);
9ae529ec
CS		 597extern int spa_get_stats(const char *pool, nvlist_t **config, char *altroot,
598 size_t buflen);
34dc7c2f 599extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props,
6f1ffb06 600 nvlist_t *zplprops);
13fe0198 601extern int spa_import(char *pool, nvlist_t *config, nvlist_t *props,
572e2857 602 uint64_t flags);
34dc7c2f
BB		 603extern nvlist_t *spa_tryimport(nvlist_t *tryconfig);
604extern int spa_destroy(char *pool);
fb5f0bc8
BB		 605extern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force,
606 boolean_t hardforce);
34dc7c2f
BB		 607extern int spa_reset(char *pool);
608extern void spa_async_request(spa_t *spa, int flag);
b128c09f 609extern void spa_async_unrequest(spa_t *spa, int flag);
34dc7c2f
BB		 610extern void spa_async_suspend(spa_t *spa);
611extern void spa_async_resume(spa_t *spa);
612extern spa_t *spa_inject_addref(char *pool);
613extern void spa_inject_delref(spa_t *spa);
428870ff
BB		 614extern void spa_scan_stat_init(spa_t *spa);
615extern int spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps);
34dc7c2f 616
b128c09f
BB		 617#define SPA_ASYNC_CONFIG_UPDATE 0x01
618#define SPA_ASYNC_REMOVE 0x02
619#define SPA_ASYNC_PROBE 0x04
620#define SPA_ASYNC_RESILVER_DONE 0x08
621#define SPA_ASYNC_RESILVER 0x10
9babb374 622#define SPA_ASYNC_AUTOEXPAND 0x20
428870ff
BB		 623#define SPA_ASYNC_REMOVE_DONE 0x40
624#define SPA_ASYNC_REMOVE_STOP 0x80
625
626/*
627 * Controls the behavior of spa_vdev_remove().
628 */
629#define SPA_REMOVE_UNSPARE 0x01
630#define SPA_REMOVE_DONE 0x02
34dc7c2f
BB		 631
632/* device manipulation */
633extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot);
634extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot,
635 int replacing);
fb5f0bc8
BB		 636extern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid,
637 int replace_done);
34dc7c2f 638extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare);
428870ff 639extern boolean_t spa_vdev_remove_active(spa_t *spa);
34dc7c2f 640extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath);
9babb374 641extern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru);
428870ff
BB		 642extern int spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config,
643 nvlist_t *props, boolean_t exp);
34dc7c2f
BB		 644
645/* spare state (which is global across all pools) */
646extern void spa_spare_add(vdev_t *vd);
647extern void spa_spare_remove(vdev_t *vd);
b128c09f 648extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt);
34dc7c2f
BB		 649extern void spa_spare_activate(vdev_t *vd);
650
651/* L2ARC state (which is global across all pools) */
652extern void spa_l2cache_add(vdev_t *vd);
653extern void spa_l2cache_remove(vdev_t *vd);
654extern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool);
655extern void spa_l2cache_activate(vdev_t *vd);
656extern void spa_l2cache_drop(spa_t *spa);
34dc7c2f 657
428870ff
BB		 658/* scanning */
659extern int spa_scan(spa_t *spa, pool_scan_func_t func);
660extern int spa_scan_stop(spa_t *spa);
0ea05c64 661extern int spa_scrub_pause_resume(spa_t *spa, pool_scrub_cmd_t flag);
34dc7c2f
BB		 662
663/* spa syncing */
664extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */
665extern void spa_sync_allpools(void);
666
55d85d5a 667extern int zfs_sync_pass_deferred_free;
428870ff 668
b128c09f
BB		 669/* spa namespace global mutex */
670extern kmutex_t spa_namespace_lock;
671
34dc7c2f
BB		 672/*
673 * SPA configuration functions in spa_config.c
674 */
675
676#define SPA_CONFIG_UPDATE_POOL 0
677#define SPA_CONFIG_UPDATE_VDEVS 1
678
b128c09f 679extern void spa_config_sync(spa_t *, boolean_t, boolean_t);
34dc7c2f
BB		 680extern void spa_config_load(void);
681extern nvlist_t *spa_all_configs(uint64_t *);
682extern void spa_config_set(spa_t *spa, nvlist_t *config);
683extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg,
684 int getstats);
685extern void spa_config_update(spa_t *spa, int what);
34dc7c2f
BB		 686
687/*
688 * Miscellaneous SPA routines in spa_misc.c
689 */
690
691/* Namespace manipulation */
692extern spa_t *spa_lookup(const char *name);
428870ff 693extern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot);
34dc7c2f
BB		 694extern void spa_remove(spa_t *spa);
695extern spa_t *spa_next(spa_t *prev);
696
697/* Refcount functions */
698extern void spa_open_ref(spa_t *spa, void *tag);
699extern void spa_close(spa_t *spa, void *tag);
0c66c32d 700extern void spa_async_close(spa_t *spa, void *tag);
34dc7c2f
BB		 701extern boolean_t spa_refcount_zero(spa_t *spa);
702
428870ff 703#define SCL_NONE 0x00
b128c09f
BB		 704#define SCL_CONFIG 0x01
705#define SCL_STATE 0x02
706#define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */
707#define SCL_ALLOC 0x08
708#define SCL_ZIO 0x10
709#define SCL_FREE 0x20
710#define SCL_VDEV 0x40
711#define SCL_LOCKS 7
712#define SCL_ALL ((1 << SCL_LOCKS) - 1)
713#define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO)
714
1421c891
PS		 715/* Historical pool statistics */
716typedef struct spa_stats_history {
717 kmutex_t lock;
718 uint64_t count;
719 uint64_t size;
720 kstat_t *kstat;
721 void *private;
722 list_t list;
723} spa_stats_history_t;
724
725typedef struct spa_stats {
726 spa_stats_history_t read_history;
0b1401ee 727 spa_stats_history_t txg_history;
2d37239a 728 spa_stats_history_t tx_assign_histogram;
330847ff 729 spa_stats_history_t io_history;
1421c891
PS		 730} spa_stats_t;
731
0b1401ee
BB		 732typedef enum txg_state {
733 TXG_STATE_BIRTH = 0,
734 TXG_STATE_OPEN = 1,
735 TXG_STATE_QUIESCED = 2,
478d64fd
IL		 736 TXG_STATE_WAIT_FOR_SYNC = 3,
737 TXG_STATE_SYNCED = 4,
738 TXG_STATE_COMMITTED = 5,
0b1401ee
BB		 739} txg_state_t;
740
baf67d15
BB		 741typedef struct txg_stat {
742 vdev_stat_t vs1;
743 vdev_stat_t vs2;
744 uint64_t txg;
745 uint64_t ndirty;
746} txg_stat_t;
747
1421c891
PS		 748extern void spa_stats_init(spa_t *spa);
749extern void spa_stats_destroy(spa_t *spa);
5dbd68a3 750extern void spa_read_history_add(spa_t *spa, const zbookmark_phys_t *zb,
1421c891 751 uint32_t aflags);
01b738f4 752extern void spa_txg_history_add(spa_t *spa, uint64_t txg, hrtime_t birth_time);
0b1401ee
BB		 753extern int spa_txg_history_set(spa_t *spa, uint64_t txg,
754 txg_state_t completed_state, hrtime_t completed_time);
baf67d15
BB		 755extern txg_stat_t *spa_txg_history_init_io(spa_t *, uint64_t,
756 struct dsl_pool *);
757extern void spa_txg_history_fini_io(spa_t *, txg_stat_t *);
2d37239a 758extern void spa_tx_assign_add_nsecs(spa_t *spa, uint64_t nsecs);
1421c891 759
b128c09f
BB		 760/* Pool configuration locks */
761extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw);
762extern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw);
763extern void spa_config_exit(spa_t *spa, int locks, void *tag);
764extern int spa_config_held(spa_t *spa, int locks, krw_t rw);
34dc7c2f
BB		 765
766/* Pool vdev add/remove lock */
767extern uint64_t spa_vdev_enter(spa_t *spa);
428870ff
BB		 768extern uint64_t spa_vdev_config_enter(spa_t *spa);
769extern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg,
770 int error, char *tag);
34dc7c2f
BB		 771extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error);
772
b128c09f 773/* Pool vdev state change lock */
428870ff 774extern void spa_vdev_state_enter(spa_t *spa, int oplock);
b128c09f
BB		 775extern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error);
776
428870ff
BB		 777/* Log state */
778typedef enum spa_log_state {
779 SPA_LOG_UNKNOWN = 0, /* unknown log state */
780 SPA_LOG_MISSING, /* missing log(s) */
781 SPA_LOG_CLEAR, /* clear the log(s) */
782 SPA_LOG_GOOD, /* log(s) are good */
783} spa_log_state_t;
784
785extern spa_log_state_t spa_get_log_state(spa_t *spa);
786extern void spa_set_log_state(spa_t *spa, spa_log_state_t state);
787extern int spa_offline_log(spa_t *spa);
788
789/* Log claim callback */
790extern void spa_claim_notify(zio_t *zio);
cc92e9d0 791extern void spa_deadman(void *);
428870ff 792
34dc7c2f 793/* Accessor functions */
b128c09f 794extern boolean_t spa_shutting_down(spa_t *spa);
34dc7c2f 795extern struct dsl_pool *spa_get_dsl(spa_t *spa);
9ae529ec 796extern boolean_t spa_is_initializing(spa_t *spa);
34dc7c2f
BB		 797extern blkptr_t *spa_get_rootblkptr(spa_t *spa);
798extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp);
799extern void spa_altroot(spa_t *, char *, size_t);
800extern int spa_sync_pass(spa_t *spa);
801extern char *spa_name(spa_t *spa);
802extern uint64_t spa_guid(spa_t *spa);
3541dc6d 803extern uint64_t spa_load_guid(spa_t *spa);
34dc7c2f
BB		 804extern uint64_t spa_last_synced_txg(spa_t *spa);
805extern uint64_t spa_first_txg(spa_t *spa);
428870ff 806extern uint64_t spa_syncing_txg(spa_t *spa);
3b7f360c 807extern uint64_t spa_final_dirty_txg(spa_t *spa);
34dc7c2f 808extern uint64_t spa_version(spa_t *spa);
b128c09f 809extern pool_state_t spa_state(spa_t *spa);
428870ff 810extern spa_load_state_t spa_load_state(spa_t *spa);
34dc7c2f 811extern uint64_t spa_freeze_txg(spa_t *spa);
3ec3bc21 812extern uint64_t spa_get_worst_case_asize(spa_t *spa, uint64_t lsize);
428870ff 813extern uint64_t spa_get_dspace(spa_t *spa);
0c60cc32 814extern uint64_t spa_get_slop_space(spa_t *spa);
428870ff 815extern void spa_update_dspace(spa_t *spa);
34dc7c2f 816extern uint64_t spa_version(spa_t *spa);
428870ff
BB		 817extern boolean_t spa_deflate(spa_t *spa);
818extern metaslab_class_t *spa_normal_class(spa_t *spa);
819extern metaslab_class_t *spa_log_class(spa_t *spa);
0c66c32d
JG		 820extern void spa_evicting_os_register(spa_t *, objset_t *os);
821extern void spa_evicting_os_deregister(spa_t *, objset_t *os);
822extern void spa_evicting_os_wait(spa_t *spa);
34dc7c2f 823extern int spa_max_replication(spa_t *spa);
428870ff 824extern int spa_prev_software_version(spa_t *spa);
34dc7c2f 825extern uint8_t spa_get_failmode(spa_t *spa);
b128c09f 826extern boolean_t spa_suspended(spa_t *spa);
428870ff
BB		 827extern uint64_t spa_bootfs(spa_t *spa);
828extern uint64_t spa_delegation(spa_t *spa);
829extern objset_t *spa_meta_objset(spa_t *spa);
cc92e9d0 830extern uint64_t spa_deadman_synctime(spa_t *spa);
34dc7c2f
BB		 831
832/* Miscellaneous support routines */
b0bc7a84
MG		 833extern void spa_activate_mos_feature(spa_t *spa, const char *feature,
834 dmu_tx_t *tx);
9ae529ec 835extern void spa_deactivate_mos_feature(spa_t *spa, const char *feature);
34dc7c2f 836extern int spa_rename(const char *oldname, const char *newname);
572e2857 837extern spa_t *spa_by_guid(uint64_t pool_guid, uint64_t device_guid);
34dc7c2f
BB		 838extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid);
839extern char *spa_strdup(const char *);
840extern void spa_strfree(char *);
841extern uint64_t spa_get_random(uint64_t range);
428870ff 842extern uint64_t spa_generate_guid(spa_t *spa);
b0bc7a84 843extern void snprintf_blkptr(char *buf, size_t buflen, const blkptr_t *bp);
34dc7c2f 844extern void spa_freeze(spa_t *spa);
3541dc6d 845extern int spa_change_guid(spa_t *spa);
34dc7c2f
BB		 846extern void spa_upgrade(spa_t *spa, uint64_t version);
847extern void spa_evict_all(void);
b128c09f
BB		 848extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid,
849 boolean_t l2cache);
34dc7c2f 850extern boolean_t spa_has_spare(spa_t *, uint64_t guid);
428870ff
BB		 851extern uint64_t dva_get_dsize_sync(spa_t *spa, const dva_t *dva);
852extern uint64_t bp_get_dsize_sync(spa_t *spa, const blkptr_t *bp);
853extern uint64_t bp_get_dsize(spa_t *spa, const blkptr_t *bp);
34dc7c2f 854extern boolean_t spa_has_slogs(spa_t *spa);
b128c09f 855extern boolean_t spa_is_root(spa_t *spa);
fb5f0bc8 856extern boolean_t spa_writeable(spa_t *spa);
acbad6ff 857extern boolean_t spa_has_pending_synctask(spa_t *spa);
f1512ee6 858extern int spa_maxblocksize(spa_t *spa);
50c957f7 859extern int spa_maxdnodesize(spa_t *spa);
63e3a861 860extern void zfs_blkptr_verify(spa_t *spa, const blkptr_t *bp);
428870ff 861
fb5f0bc8 862extern int spa_mode(spa_t *spa);
428870ff 863extern uint64_t strtonum(const char *str, char **nptr);
34dc7c2f 864
34dc7c2f
BB		 865extern char *spa_his_ievent_table[];
866
867extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx);
868extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read,
869 char *his_buf);
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MA		 870extern int spa_history_log(spa_t *spa, const char *his_buf);
871extern int spa_history_log_nvl(spa_t *spa, nvlist_t *nvl);
872extern void spa_history_log_version(spa_t *spa, const char *operation);
873extern void spa_history_log_internal(spa_t *spa, const char *operation,
874 dmu_tx_t *tx, const char *fmt, ...);
875extern void spa_history_log_internal_ds(struct dsl_dataset *ds, const char *op,
876 dmu_tx_t *tx, const char *fmt, ...);
877extern void spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation,
878 dmu_tx_t *tx, const char *fmt, ...);
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BB		 879
880/* error handling */
5dbd68a3 881struct zbookmark_phys;
428870ff 882extern void spa_log_error(spa_t *spa, zio_t *zio);
34dc7c2f 883extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
428870ff 884 zio_t *zio, uint64_t stateoroffset, uint64_t length);
34dc7c2f 885extern void zfs_post_remove(spa_t *spa, vdev_t *vd);
d02ca379 886extern void zfs_post_state_change(spa_t *spa, vdev_t *vd, uint64_t laststate);
34dc7c2f 887extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd);
fb390aaf 888extern void zfs_post_sysevent(spa_t *spa, vdev_t *vd, const char *name);
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BB		 889extern uint64_t spa_get_errlog_size(spa_t *spa);
890extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count);
891extern void spa_errlog_rotate(spa_t *spa);
892extern void spa_errlog_drain(spa_t *spa);
893extern void spa_errlog_sync(spa_t *spa, uint64_t txg);
894extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub);
895
896/* vdev cache */
897extern void vdev_cache_stat_init(void);
898extern void vdev_cache_stat_fini(void);
899
900/* Initialization and termination */
901extern void spa_init(int flags);
902extern void spa_fini(void);
0bc8fd78 903extern void spa_boot_init(void);
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BB		 904
905/* properties */
906extern int spa_prop_set(spa_t *spa, nvlist_t *nvp);
907extern int spa_prop_get(spa_t *spa, nvlist_t **nvp);
908extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx);
d164b209 909extern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t);
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BB		 910
911/* asynchronous event notification */
912extern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name);
913
914#ifdef ZFS_DEBUG
79c76d5b
BB		 915#define dprintf_bp(bp, fmt, ...) do { \
916 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
917 char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \
918 snprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \
919 dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \
920 kmem_free(__blkbuf, BP_SPRINTF_LEN); \
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BB		 921 } \
922_NOTE(CONSTCOND) } while (0)
923#else
924#define dprintf_bp(bp, fmt, ...)
925#endif
926
6d974228
GW		 927extern boolean_t spa_debug_enabled(spa_t *spa);
928#define spa_dbgmsg(spa, ...) \
929{ \
930 if (spa_debug_enabled(spa)) \
931 zfs_dbgmsg(__VA_ARGS__); \
932}
933
fb5f0bc8 934extern int spa_mode_global; /* mode, e.g. FREAD | FWRITE */
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BB		 935
936#ifdef __cplusplus
937}
938#endif
939
940#endif /* _SYS_SPA_H */
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