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Illumos 4753 - increase number of outstanding async writes when sync task is waiting
[mirror_zfs.git] / include / sys / spa.h
CommitLineData
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.
34dc7c2f
BB		 25 */
26
27#ifndef _SYS_SPA_H
28#define _SYS_SPA_H
29
34dc7c2f
BB		 30#include <sys/avl.h>
31#include <sys/zfs_context.h>
32#include <sys/nvpair.h>
33#include <sys/sysmacros.h>
34#include <sys/types.h>
35#include <sys/fs/zfs.h>
36
37#ifdef __cplusplus
38extern "C" {
39#endif
40
41/*
42 * Forward references that lots of things need.
43 */
44typedef struct spa spa_t;
45typedef struct vdev vdev_t;
46typedef struct metaslab metaslab_t;
428870ff
BB		 47typedef struct metaslab_group metaslab_group_t;
48typedef struct metaslab_class metaslab_class_t;
49typedef struct zio zio_t;
34dc7c2f 50typedef struct zilog zilog_t;
34dc7c2f 51typedef struct spa_aux_vdev spa_aux_vdev_t;
428870ff
BB		 52typedef struct ddt ddt_t;
53typedef struct ddt_entry ddt_entry_t;
5dbd68a3 54typedef struct zbookmark_phys zbookmark_phys_t;
1421c891 55
34dc7c2f 56struct dsl_pool;
6f1ffb06 57struct dsl_dataset;
34dc7c2f
BB		 58
59/*
60 * General-purpose 32-bit and 64-bit bitfield encodings.
61 */
62#define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len))
63#define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len))
64#define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low))
65#define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low))
66
67#define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
68#define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
69
b0bc7a84
MG		 70#define BF32_SET(x, low, len, val) do { \
71 ASSERT3U(val, <, 1U << (len)); \
72 ASSERT3U(low + len, <=, 32); \
73 (x) ^= BF32_ENCODE((x >> low) ^ (val), low, len); \
74_NOTE(CONSTCOND) } while (0)
75
76#define BF64_SET(x, low, len, val) do { \
77 ASSERT3U(val, <, 1ULL << (len)); \
78 ASSERT3U(low + len, <=, 64); \
79 ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)); \
80_NOTE(CONSTCOND) } while (0)
34dc7c2f
BB		 81
82#define BF32_GET_SB(x, low, len, shift, bias) \
83 ((BF32_GET(x, low, len) + (bias)) << (shift))
84#define BF64_GET_SB(x, low, len, shift, bias) \
85 ((BF64_GET(x, low, len) + (bias)) << (shift))
86
b0bc7a84
MG		 87#define BF32_SET_SB(x, low, len, shift, bias, val) do { \
88 ASSERT(IS_P2ALIGNED(val, 1U << shift)); \
89 ASSERT3S((val) >> (shift), >=, bias); \
90 BF32_SET(x, low, len, ((val) >> (shift)) - (bias)); \
91_NOTE(CONSTCOND) } while (0)
92#define BF64_SET_SB(x, low, len, shift, bias, val) do { \
93 ASSERT(IS_P2ALIGNED(val, 1ULL << shift)); \
94 ASSERT3S((val) >> (shift), >=, bias); \
95 BF64_SET(x, low, len, ((val) >> (shift)) - (bias)); \
96_NOTE(CONSTCOND) } while (0)
34dc7c2f
BB		 97
98/*
99 * We currently support nine block sizes, from 512 bytes to 128K.
100 * We could go higher, but the benefits are near-zero and the cost
101 * of COWing a giant block to modify one byte would become excessive.
102 */
103#define SPA_MINBLOCKSHIFT 9
104#define SPA_MAXBLOCKSHIFT 17
105#define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT)
106#define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT)
107
108#define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)
109
b128c09f
BB		 110/*
111 * Size of block to hold the configuration data (a packed nvlist)
112 */
9ae529ec 113#define SPA_CONFIG_BLOCKSIZE (1ULL << 14)
b128c09f 114
34dc7c2f
BB		 115/*
116 * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
117 * The ASIZE encoding should be at least 64 times larger (6 more bits)
118 * to support up to 4-way RAID-Z mirror mode with worst-case gang block
119 * overhead, three DVAs per bp, plus one more bit in case we do anything
120 * else that expands the ASIZE.
121 */
122#define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */
123#define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */
124#define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */
125
126/*
127 * All SPA data is represented by 128-bit data virtual addresses (DVAs).
128 * The members of the dva_t should be considered opaque outside the SPA.
129 */
130typedef struct dva {
131 uint64_t dva_word[2];
132} dva_t;
133
134/*
135 * Each block has a 256-bit checksum -- strong enough for cryptographic hashes.
136 */
137typedef struct zio_cksum {
138 uint64_t zc_word[4];
139} zio_cksum_t;
140
141/*
142 * Each block is described by its DVAs, time of birth, checksum, etc.
143 * The word-by-word, bit-by-bit layout of the blkptr is as follows:
144 *
145 * 64 56 48 40 32 24 16 8 0
146 * +-------+-------+-------+-------+-------+-------+-------+-------+
147 * 0 | vdev1 | GRID | ASIZE |
148 * +-------+-------+-------+-------+-------+-------+-------+-------+
149 * 1 |G| offset1 |
150 * +-------+-------+-------+-------+-------+-------+-------+-------+
151 * 2 | vdev2 | GRID | ASIZE |
152 * +-------+-------+-------+-------+-------+-------+-------+-------+
153 * 3 |G| offset2 |
154 * +-------+-------+-------+-------+-------+-------+-------+-------+
155 * 4 | vdev3 | GRID | ASIZE |
156 * +-------+-------+-------+-------+-------+-------+-------+-------+
157 * 5 |G| offset3 |
158 * +-------+-------+-------+-------+-------+-------+-------+-------+
9b67f605 159 * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE |
34dc7c2f
BB		 160 * +-------+-------+-------+-------+-------+-------+-------+-------+
161 * 7 | padding |
162 * +-------+-------+-------+-------+-------+-------+-------+-------+
163 * 8 | padding |
164 * +-------+-------+-------+-------+-------+-------+-------+-------+
428870ff 165 * 9 | physical birth txg |
34dc7c2f 166 * +-------+-------+-------+-------+-------+-------+-------+-------+
428870ff 167 * a | logical birth txg |
34dc7c2f
BB		 168 * +-------+-------+-------+-------+-------+-------+-------+-------+
169 * b | fill count |
170 * +-------+-------+-------+-------+-------+-------+-------+-------+
171 * c | checksum[0] |
172 * +-------+-------+-------+-------+-------+-------+-------+-------+
173 * d | checksum[1] |
174 * +-------+-------+-------+-------+-------+-------+-------+-------+
175 * e | checksum[2] |
176 * +-------+-------+-------+-------+-------+-------+-------+-------+
177 * f | checksum[3] |
178 * +-------+-------+-------+-------+-------+-------+-------+-------+
179 *
180 * Legend:
181 *
182 * vdev virtual device ID
183 * offset offset into virtual device
184 * LSIZE logical size
185 * PSIZE physical size (after compression)
186 * ASIZE allocated size (including RAID-Z parity and gang block headers)
187 * GRID RAID-Z layout information (reserved for future use)
188 * cksum checksum function
189 * comp compression function
190 * G gang block indicator
428870ff
BB		 191 * B byteorder (endianness)
192 * D dedup
9b67f605
MA		 193 * X encryption (on version 30, which is not supported)
194 * E blkptr_t contains embedded data (see below)
34dc7c2f 195 * lvl level of indirection
428870ff
BB		 196 * type DMU object type
197 * phys birth txg of block allocation; zero if same as logical birth txg
198 * log. birth transaction group in which the block was logically born
34dc7c2f
BB		 199 * fill count number of non-zero blocks under this bp
200 * checksum[4] 256-bit checksum of the data this bp describes
201 */
9b67f605
MA		 202
203/*
204 * "Embedded" blkptr_t's don't actually point to a block, instead they
205 * have a data payload embedded in the blkptr_t itself. See the comment
206 * in blkptr.c for more details.
207 *
208 * The blkptr_t is laid out as follows:
209 *
210 * 64 56 48 40 32 24 16 8 0
211 * +-------+-------+-------+-------+-------+-------+-------+-------+
212 * 0 | payload |
213 * 1 | payload |
214 * 2 | payload |
215 * 3 | payload |
216 * 4 | payload |
217 * 5 | payload |
218 * +-------+-------+-------+-------+-------+-------+-------+-------+
219 * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE |
220 * +-------+-------+-------+-------+-------+-------+-------+-------+
221 * 7 | payload |
222 * 8 | payload |
223 * 9 | payload |
224 * +-------+-------+-------+-------+-------+-------+-------+-------+
225 * a | logical birth txg |
226 * +-------+-------+-------+-------+-------+-------+-------+-------+
227 * b | payload |
228 * c | payload |
229 * d | payload |
230 * e | payload |
231 * f | payload |
232 * +-------+-------+-------+-------+-------+-------+-------+-------+
233 *
234 * Legend:
235 *
236 * payload contains the embedded data
237 * B (byteorder) byteorder (endianness)
238 * D (dedup) padding (set to zero)
239 * X encryption (set to zero; see above)
240 * E (embedded) set to one
241 * lvl indirection level
242 * type DMU object type
243 * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*)
244 * comp compression function of payload
245 * PSIZE size of payload after compression, in bytes
246 * LSIZE logical size of payload, in bytes
247 * note that 25 bits is enough to store the largest
248 * "normal" BP's LSIZE (2^16 * 2^9) in bytes
249 * log. birth transaction group in which the block was logically born
250 *
251 * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded
252 * bp's they are stored in units of SPA_MINBLOCKSHIFT.
253 * Generally, the generic BP_GET_*() macros can be used on embedded BP's.
254 * The B, D, X, lvl, type, and comp fields are stored the same as with normal
255 * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must
256 * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before
257 * other macros, as they assert that they are only used on BP's of the correct
258 * "embedded-ness".
259 */
260
261#define BPE_GET_ETYPE(bp) \
262 (ASSERT(BP_IS_EMBEDDED(bp)), \
263 BF64_GET((bp)->blk_prop, 40, 8))
264#define BPE_SET_ETYPE(bp, t) do { \
265 ASSERT(BP_IS_EMBEDDED(bp)); \
266 BF64_SET((bp)->blk_prop, 40, 8, t); \
267_NOTE(CONSTCOND) } while (0)
268
269#define BPE_GET_LSIZE(bp) \
270 (ASSERT(BP_IS_EMBEDDED(bp)), \
271 BF64_GET_SB((bp)->blk_prop, 0, 25, 0, 1))
272#define BPE_SET_LSIZE(bp, x) do { \
273 ASSERT(BP_IS_EMBEDDED(bp)); \
274 BF64_SET_SB((bp)->blk_prop, 0, 25, 0, 1, x); \
275_NOTE(CONSTCOND) } while (0)
276
277#define BPE_GET_PSIZE(bp) \
278 (ASSERT(BP_IS_EMBEDDED(bp)), \
279 BF64_GET_SB((bp)->blk_prop, 25, 7, 0, 1))
280#define BPE_SET_PSIZE(bp, x) do { \
281 ASSERT(BP_IS_EMBEDDED(bp)); \
282 BF64_SET_SB((bp)->blk_prop, 25, 7, 0, 1, x); \
283_NOTE(CONSTCOND) } while (0)
284
285typedef enum bp_embedded_type {
286 BP_EMBEDDED_TYPE_DATA,
287 BP_EMBEDDED_TYPE_RESERVED, /* Reserved for an unintegrated feature. */
288 NUM_BP_EMBEDDED_TYPES = BP_EMBEDDED_TYPE_RESERVED
289} bp_embedded_type_t;
290
291#define BPE_NUM_WORDS 14
292#define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t))
293#define BPE_IS_PAYLOADWORD(bp, wp) \
294 ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth)
295
34dc7c2f
BB		 296#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
297#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
298
b0bc7a84
MG		 299/*
300 * A block is a hole when it has either 1) never been written to, or
301 * 2) is zero-filled. In both cases, ZFS can return all zeroes for all reads
302 * without physically allocating disk space. Holes are represented in the
303 * blkptr_t structure by zeroed blk_dva. Correct checking for holes is
304 * done through the BP_IS_HOLE macro. For holes, the logical size, level,
305 * DMU object type, and birth times are all also stored for holes that
306 * were written to at some point (i.e. were punched after having been filled).
307 */
428870ff
BB		 308typedef struct blkptr {
309 dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */
310 uint64_t blk_prop; /* size, compression, type, etc */
311 uint64_t blk_pad[2]; /* Extra space for the future */
312 uint64_t blk_phys_birth; /* txg when block was allocated */
313 uint64_t blk_birth; /* transaction group at birth */
314 uint64_t blk_fill; /* fill count */
315 zio_cksum_t blk_cksum; /* 256-bit checksum */
316} blkptr_t;
317
34dc7c2f
BB		 318/*
319 * Macros to get and set fields in a bp or DVA.
320 */
321#define DVA_GET_ASIZE(dva) \
b0bc7a84 322 BF64_GET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, SPA_MINBLOCKSHIFT, 0)
34dc7c2f 323#define DVA_SET_ASIZE(dva, x) \
b0bc7a84
MG		 324 BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \
325 SPA_MINBLOCKSHIFT, 0, x)
34dc7c2f
BB		 326
327#define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8)
328#define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x)
329
330#define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32)
331#define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x)
332
333#define DVA_GET_OFFSET(dva) \
334 BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0)
335#define DVA_SET_OFFSET(dva, x) \
336 BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x)
337
338#define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1)
339#define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
340
341#define BP_GET_LSIZE(bp) \
9b67f605
MA		 342 (BP_IS_EMBEDDED(bp) ? \
343 (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \
344 BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1))
345#define BP_SET_LSIZE(bp, x) do { \
346 ASSERT(!BP_IS_EMBEDDED(bp)); \
347 BF64_SET_SB((bp)->blk_prop, \
348 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
349_NOTE(CONSTCOND) } while (0)
34dc7c2f
BB		 350
351#define BP_GET_PSIZE(bp) \
9b67f605
MA		 352 (BP_IS_EMBEDDED(bp) ? 0 : \
353 BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1))
354#define BP_SET_PSIZE(bp, x) do { \
355 ASSERT(!BP_IS_EMBEDDED(bp)); \
356 BF64_SET_SB((bp)->blk_prop, \
357 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
358_NOTE(CONSTCOND) } while (0)
359
360#define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 7)
361#define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 7, x)
34dc7c2f 362
9b67f605
MA		 363#define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1)
364#define BP_SET_EMBEDDED(bp, x) BF64_SET((bp)->blk_prop, 39, 1, x)
428870ff 365
9b67f605
MA		 366#define BP_GET_CHECKSUM(bp) \
367 (BP_IS_EMBEDDED(bp) ? ZIO_CHECKSUM_OFF : \
368 BF64_GET((bp)->blk_prop, 40, 8))
369#define BP_SET_CHECKSUM(bp, x) do { \
370 ASSERT(!BP_IS_EMBEDDED(bp)); \
371 BF64_SET((bp)->blk_prop, 40, 8, x); \
372_NOTE(CONSTCOND) } while (0)
34dc7c2f 373
428870ff
BB		 374#define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
375#define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
34dc7c2f 376
428870ff
BB		 377#define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
378#define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
34dc7c2f 379
428870ff
BB		 380#define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1)
381#define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x)
382
b0bc7a84 383#define BP_GET_BYTEORDER(bp) BF64_GET((bp)->blk_prop, 63, 1)
428870ff
BB		 384#define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
385
386#define BP_PHYSICAL_BIRTH(bp) \
9b67f605
MA		 387 (BP_IS_EMBEDDED(bp) ? 0 : \
388 (bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
428870ff
BB		 389
390#define BP_SET_BIRTH(bp, logical, physical) \
391{ \
9b67f605 392 ASSERT(!BP_IS_EMBEDDED(bp)); \
428870ff
BB		 393 (bp)->blk_birth = (logical); \
394 (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
395}
34dc7c2f 396
9b67f605
MA		 397#define BP_GET_FILL(bp) (BP_IS_EMBEDDED(bp) ? 1 : (bp)->blk_fill)
398
34dc7c2f 399#define BP_GET_ASIZE(bp) \
9b67f605
MA		 400 (BP_IS_EMBEDDED(bp) ? 0 : \
401 DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
402 DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
403 DVA_GET_ASIZE(&(bp)->blk_dva[2]))
34dc7c2f
BB		 404
405#define BP_GET_UCSIZE(bp) \
9ae529ec 406 ((BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) ? \
428870ff 407 BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp))
34dc7c2f
BB		 408
409#define BP_GET_NDVAS(bp) \
9b67f605
MA		 410 (BP_IS_EMBEDDED(bp) ? 0 : \
411 !!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
34dc7c2f
BB		 412 !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
413 !!DVA_GET_ASIZE(&(bp)->blk_dva[2]))
414
415#define BP_COUNT_GANG(bp) \
9b67f605 416 (BP_IS_EMBEDDED(bp) ? 0 : \
34dc7c2f
BB		 417 (DVA_GET_GANG(&(bp)->blk_dva[0]) + \
418 DVA_GET_GANG(&(bp)->blk_dva[1]) + \
9b67f605 419 DVA_GET_GANG(&(bp)->blk_dva[2])))
34dc7c2f
BB		 420
421#define DVA_EQUAL(dva1, dva2) \
422 ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
423 (dva1)->dva_word[0] == (dva2)->dva_word[0])
424
428870ff
BB		 425#define BP_EQUAL(bp1, bp2) \
426 (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \
9b67f605 427 (bp1)->blk_birth == (bp2)->blk_birth && \
428870ff
BB		 428 DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \
429 DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \
430 DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2]))
431
34dc7c2f
BB		 432#define ZIO_CHECKSUM_EQUAL(zc1, zc2) \
433 (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \
434 ((zc1).zc_word[1] - (zc2).zc_word[1]) | \
435 ((zc1).zc_word[2] - (zc2).zc_word[2]) | \
436 ((zc1).zc_word[3] - (zc2).zc_word[3])))
437
34dc7c2f
BB		 438#define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0)
439
440#define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \
441{ \
442 (zcp)->zc_word[0] = w0; \
443 (zcp)->zc_word[1] = w1; \
444 (zcp)->zc_word[2] = w2; \
445 (zcp)->zc_word[3] = w3; \
446}
447
9b67f605
MA		 448#define BP_IDENTITY(bp) (ASSERT(!BP_IS_EMBEDDED(bp)), &(bp)->blk_dva[0])
449#define BP_IS_GANG(bp) \
450 (BP_IS_EMBEDDED(bp) ? B_FALSE : DVA_GET_GANG(BP_IDENTITY(bp)))
b0bc7a84
MG		 451#define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \
452 (dva)->dva_word[1] == 0ULL)
9b67f605
MA		 453#define BP_IS_HOLE(bp) \
454 (!BP_IS_EMBEDDED(bp) && DVA_IS_EMPTY(BP_IDENTITY(bp)))
428870ff
BB		 455
456/* BP_IS_RAIDZ(bp) assumes no block compression */
457#define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \
458 BP_GET_PSIZE(bp))
34dc7c2f 459
b128c09f 460#define BP_ZERO(bp) \
34dc7c2f
BB		 461{ \
462 (bp)->blk_dva[0].dva_word[0] = 0; \
463 (bp)->blk_dva[0].dva_word[1] = 0; \
464 (bp)->blk_dva[1].dva_word[0] = 0; \
465 (bp)->blk_dva[1].dva_word[1] = 0; \
466 (bp)->blk_dva[2].dva_word[0] = 0; \
467 (bp)->blk_dva[2].dva_word[1] = 0; \
34dc7c2f
BB		 468 (bp)->blk_prop = 0; \
469 (bp)->blk_pad[0] = 0; \
470 (bp)->blk_pad[1] = 0; \
428870ff 471 (bp)->blk_phys_birth = 0; \
b128c09f 472 (bp)->blk_birth = 0; \
34dc7c2f
BB		 473 (bp)->blk_fill = 0; \
474 ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \
475}
476
34dc7c2f
BB		 477#ifdef _BIG_ENDIAN
478#define ZFS_HOST_BYTEORDER (0ULL)
479#else
b0bc7a84 480#define ZFS_HOST_BYTEORDER (1ULL)
34dc7c2f
BB		 481#endif
482
483#define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER)
484
485#define BP_SPRINTF_LEN 320
486
428870ff
BB		 487/*
488 * This macro allows code sharing between zfs, libzpool, and mdb.
489 * 'func' is either snprintf() or mdb_snprintf().
490 * 'ws' (whitespace) can be ' ' for single-line format, '\n' for multi-line.
491 */
b0bc7a84 492#define SNPRINTF_BLKPTR(func, ws, buf, size, bp, type, checksum, compress) \
428870ff
BB		 493{ \
494 static const char *copyname[] = \
495 { "zero", "single", "double", "triple" }; \
428870ff
BB		 496 int len = 0; \
497 int copies = 0; \
d6320ddb 498 int d; \
428870ff
BB		 499 \
500 if (bp == NULL) { \
b0bc7a84 501 len += func(buf + len, size - len, "<NULL>"); \
428870ff 502 } else if (BP_IS_HOLE(bp)) { \
b0bc7a84
MG		 503 len += func(buf + len, size - len, "<hole>"); \
504 if (bp->blk_birth > 0) { \
505 len += func(buf + len, size - len, \
506 " birth=%lluL", \
507 (u_longlong_t)bp->blk_birth); \
508 } \
9b67f605
MA		 509 } else if (BP_IS_EMBEDDED(bp)) { \
510 len = func(buf + len, size - len, \
511 "EMBEDDED [L%llu %s] et=%u %s " \
512 "size=%llxL/%llxP birth=%lluL", \
513 (u_longlong_t)BP_GET_LEVEL(bp), \
514 type, \
515 (int)BPE_GET_ETYPE(bp), \
516 compress, \
517 (u_longlong_t)BPE_GET_LSIZE(bp), \
518 (u_longlong_t)BPE_GET_PSIZE(bp), \
519 (u_longlong_t)bp->blk_birth); \
428870ff 520 } else { \
d6320ddb 521 for (d = 0; d < BP_GET_NDVAS(bp); d++) { \
428870ff
BB		 522 const dva_t *dva = &bp->blk_dva[d]; \
523 if (DVA_IS_VALID(dva)) \
524 copies++; \
525 len += func(buf + len, size - len, \
526 "DVA[%d]=<%llu:%llx:%llx>%c", d, \
527 (u_longlong_t)DVA_GET_VDEV(dva), \
528 (u_longlong_t)DVA_GET_OFFSET(dva), \
529 (u_longlong_t)DVA_GET_ASIZE(dva), \
530 ws); \
531 } \
532 if (BP_IS_GANG(bp) && \
533 DVA_GET_ASIZE(&bp->blk_dva[2]) <= \
534 DVA_GET_ASIZE(&bp->blk_dva[1]) / 2) \
535 copies--; \
536 len += func(buf + len, size - len, \
537 "[L%llu %s] %s %s %s %s %s %s%c" \
538 "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \
539 "cksum=%llx:%llx:%llx:%llx", \
540 (u_longlong_t)BP_GET_LEVEL(bp), \
541 type, \
542 checksum, \
543 compress, \
544 BP_GET_BYTEORDER(bp) == 0 ? "BE" : "LE", \
545 BP_IS_GANG(bp) ? "gang" : "contiguous", \
546 BP_GET_DEDUP(bp) ? "dedup" : "unique", \
547 copyname[copies], \
548 ws, \
549 (u_longlong_t)BP_GET_LSIZE(bp), \
550 (u_longlong_t)BP_GET_PSIZE(bp), \
551 (u_longlong_t)bp->blk_birth, \
552 (u_longlong_t)BP_PHYSICAL_BIRTH(bp), \
9b67f605 553 (u_longlong_t)BP_GET_FILL(bp), \
428870ff
BB		 554 ws, \
555 (u_longlong_t)bp->blk_cksum.zc_word[0], \
556 (u_longlong_t)bp->blk_cksum.zc_word[1], \
557 (u_longlong_t)bp->blk_cksum.zc_word[2], \
558 (u_longlong_t)bp->blk_cksum.zc_word[3]); \
559 } \
560 ASSERT(len < size); \
561}
562
34dc7c2f
BB		 563#include <sys/dmu.h>
564
565#define BP_GET_BUFC_TYPE(bp) \
9ae529ec
CS		 566 (((BP_GET_LEVEL(bp) > 0) || (DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))) ? \
567 ARC_BUFC_METADATA : ARC_BUFC_DATA)
428870ff
BB		 568
569typedef enum spa_import_type {
570 SPA_IMPORT_EXISTING,
571 SPA_IMPORT_ASSEMBLE
572} spa_import_type_t;
34dc7c2f
BB		 573
574/* state manipulation functions */
575extern int spa_open(const char *pool, spa_t **, void *tag);
428870ff
BB		 576extern int spa_open_rewind(const char *pool, spa_t **, void *tag,
577 nvlist_t *policy, nvlist_t **config);
9ae529ec
CS		 578extern int spa_get_stats(const char *pool, nvlist_t **config, char *altroot,
579 size_t buflen);
34dc7c2f 580extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props,
6f1ffb06 581 nvlist_t *zplprops);
b128c09f 582extern int spa_import_rootpool(char *devpath, char *devid);
13fe0198 583extern int spa_import(char *pool, nvlist_t *config, nvlist_t *props,
572e2857 584 uint64_t flags);
34dc7c2f
BB		 585extern nvlist_t *spa_tryimport(nvlist_t *tryconfig);
586extern int spa_destroy(char *pool);
fb5f0bc8
BB		 587extern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force,
588 boolean_t hardforce);
34dc7c2f
BB		 589extern int spa_reset(char *pool);
590extern void spa_async_request(spa_t *spa, int flag);
b128c09f 591extern void spa_async_unrequest(spa_t *spa, int flag);
34dc7c2f
BB		 592extern void spa_async_suspend(spa_t *spa);
593extern void spa_async_resume(spa_t *spa);
594extern spa_t *spa_inject_addref(char *pool);
595extern void spa_inject_delref(spa_t *spa);
428870ff
BB		 596extern void spa_scan_stat_init(spa_t *spa);
597extern int spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps);
34dc7c2f 598
b128c09f
BB		 599#define SPA_ASYNC_CONFIG_UPDATE 0x01
600#define SPA_ASYNC_REMOVE 0x02
601#define SPA_ASYNC_PROBE 0x04
602#define SPA_ASYNC_RESILVER_DONE 0x08
603#define SPA_ASYNC_RESILVER 0x10
9babb374 604#define SPA_ASYNC_AUTOEXPAND 0x20
428870ff
BB		 605#define SPA_ASYNC_REMOVE_DONE 0x40
606#define SPA_ASYNC_REMOVE_STOP 0x80
607
608/*
609 * Controls the behavior of spa_vdev_remove().
610 */
611#define SPA_REMOVE_UNSPARE 0x01
612#define SPA_REMOVE_DONE 0x02
34dc7c2f
BB		 613
614/* device manipulation */
615extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot);
616extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot,
617 int replacing);
fb5f0bc8
BB		 618extern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid,
619 int replace_done);
34dc7c2f 620extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare);
428870ff 621extern boolean_t spa_vdev_remove_active(spa_t *spa);
34dc7c2f 622extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath);
9babb374 623extern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru);
428870ff
BB		 624extern int spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config,
625 nvlist_t *props, boolean_t exp);
34dc7c2f
BB		 626
627/* spare state (which is global across all pools) */
628extern void spa_spare_add(vdev_t *vd);
629extern void spa_spare_remove(vdev_t *vd);
b128c09f 630extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt);
34dc7c2f
BB		 631extern void spa_spare_activate(vdev_t *vd);
632
633/* L2ARC state (which is global across all pools) */
634extern void spa_l2cache_add(vdev_t *vd);
635extern void spa_l2cache_remove(vdev_t *vd);
636extern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool);
637extern void spa_l2cache_activate(vdev_t *vd);
638extern void spa_l2cache_drop(spa_t *spa);
34dc7c2f 639
428870ff
BB		 640/* scanning */
641extern int spa_scan(spa_t *spa, pool_scan_func_t func);
642extern int spa_scan_stop(spa_t *spa);
34dc7c2f
BB		 643
644/* spa syncing */
645extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */
646extern void spa_sync_allpools(void);
647
55d85d5a 648extern int zfs_sync_pass_deferred_free;
428870ff 649
b128c09f
BB		 650/* spa namespace global mutex */
651extern kmutex_t spa_namespace_lock;
652
34dc7c2f
BB		 653/*
654 * SPA configuration functions in spa_config.c
655 */
656
657#define SPA_CONFIG_UPDATE_POOL 0
658#define SPA_CONFIG_UPDATE_VDEVS 1
659
b128c09f 660extern void spa_config_sync(spa_t *, boolean_t, boolean_t);
34dc7c2f
BB		 661extern void spa_config_load(void);
662extern nvlist_t *spa_all_configs(uint64_t *);
663extern void spa_config_set(spa_t *spa, nvlist_t *config);
664extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg,
665 int getstats);
666extern void spa_config_update(spa_t *spa, int what);
34dc7c2f
BB		 667
668/*
669 * Miscellaneous SPA routines in spa_misc.c
670 */
671
672/* Namespace manipulation */
673extern spa_t *spa_lookup(const char *name);
428870ff 674extern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot);
34dc7c2f
BB		 675extern void spa_remove(spa_t *spa);
676extern spa_t *spa_next(spa_t *prev);
677
678/* Refcount functions */
679extern void spa_open_ref(spa_t *spa, void *tag);
680extern void spa_close(spa_t *spa, void *tag);
681extern boolean_t spa_refcount_zero(spa_t *spa);
682
428870ff 683#define SCL_NONE 0x00
b128c09f
BB		 684#define SCL_CONFIG 0x01
685#define SCL_STATE 0x02
686#define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */
687#define SCL_ALLOC 0x08
688#define SCL_ZIO 0x10
689#define SCL_FREE 0x20
690#define SCL_VDEV 0x40
691#define SCL_LOCKS 7
692#define SCL_ALL ((1 << SCL_LOCKS) - 1)
693#define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO)
694
1421c891
PS		 695/* Historical pool statistics */
696typedef struct spa_stats_history {
697 kmutex_t lock;
698 uint64_t count;
699 uint64_t size;
700 kstat_t *kstat;
701 void *private;
702 list_t list;
703} spa_stats_history_t;
704
705typedef struct spa_stats {
706 spa_stats_history_t read_history;
0b1401ee 707 spa_stats_history_t txg_history;
2d37239a 708 spa_stats_history_t tx_assign_histogram;
330847ff 709 spa_stats_history_t io_history;
1421c891
PS		 710} spa_stats_t;
711
0b1401ee
BB		 712typedef enum txg_state {
713 TXG_STATE_BIRTH = 0,
714 TXG_STATE_OPEN = 1,
715 TXG_STATE_QUIESCED = 2,
478d64fd
IL		 716 TXG_STATE_WAIT_FOR_SYNC = 3,
717 TXG_STATE_SYNCED = 4,
718 TXG_STATE_COMMITTED = 5,
0b1401ee
BB		 719} txg_state_t;
720
1421c891
PS		 721extern void spa_stats_init(spa_t *spa);
722extern void spa_stats_destroy(spa_t *spa);
5dbd68a3 723extern void spa_read_history_add(spa_t *spa, const zbookmark_phys_t *zb,
1421c891 724 uint32_t aflags);
01b738f4 725extern void spa_txg_history_add(spa_t *spa, uint64_t txg, hrtime_t birth_time);
0b1401ee
BB		 726extern int spa_txg_history_set(spa_t *spa, uint64_t txg,
727 txg_state_t completed_state, hrtime_t completed_time);
728extern int spa_txg_history_set_io(spa_t *spa, uint64_t txg, uint64_t nread,
3ccab252 729 uint64_t nwritten, uint64_t reads, uint64_t writes, uint64_t ndirty);
2d37239a 730extern void spa_tx_assign_add_nsecs(spa_t *spa, uint64_t nsecs);
1421c891 731
b128c09f
BB		 732/* Pool configuration locks */
733extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw);
734extern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw);
735extern void spa_config_exit(spa_t *spa, int locks, void *tag);
736extern int spa_config_held(spa_t *spa, int locks, krw_t rw);
34dc7c2f
BB		 737
738/* Pool vdev add/remove lock */
739extern uint64_t spa_vdev_enter(spa_t *spa);
428870ff
BB		 740extern uint64_t spa_vdev_config_enter(spa_t *spa);
741extern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg,
742 int error, char *tag);
34dc7c2f
BB		 743extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error);
744
b128c09f 745/* Pool vdev state change lock */
428870ff 746extern void spa_vdev_state_enter(spa_t *spa, int oplock);
b128c09f
BB		 747extern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error);
748
428870ff
BB		 749/* Log state */
750typedef enum spa_log_state {
751 SPA_LOG_UNKNOWN = 0, /* unknown log state */
752 SPA_LOG_MISSING, /* missing log(s) */
753 SPA_LOG_CLEAR, /* clear the log(s) */
754 SPA_LOG_GOOD, /* log(s) are good */
755} spa_log_state_t;
756
757extern spa_log_state_t spa_get_log_state(spa_t *spa);
758extern void spa_set_log_state(spa_t *spa, spa_log_state_t state);
759extern int spa_offline_log(spa_t *spa);
760
761/* Log claim callback */
762extern void spa_claim_notify(zio_t *zio);
cc92e9d0 763extern void spa_deadman(void *);
428870ff 764
34dc7c2f 765/* Accessor functions */
b128c09f 766extern boolean_t spa_shutting_down(spa_t *spa);
34dc7c2f 767extern struct dsl_pool *spa_get_dsl(spa_t *spa);
9ae529ec 768extern boolean_t spa_is_initializing(spa_t *spa);
34dc7c2f
BB		 769extern blkptr_t *spa_get_rootblkptr(spa_t *spa);
770extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp);
771extern void spa_altroot(spa_t *, char *, size_t);
772extern int spa_sync_pass(spa_t *spa);
773extern char *spa_name(spa_t *spa);
774extern uint64_t spa_guid(spa_t *spa);
3541dc6d 775extern uint64_t spa_load_guid(spa_t *spa);
34dc7c2f
BB		 776extern uint64_t spa_last_synced_txg(spa_t *spa);
777extern uint64_t spa_first_txg(spa_t *spa);
428870ff 778extern uint64_t spa_syncing_txg(spa_t *spa);
34dc7c2f 779extern uint64_t spa_version(spa_t *spa);
b128c09f 780extern pool_state_t spa_state(spa_t *spa);
428870ff 781extern spa_load_state_t spa_load_state(spa_t *spa);
34dc7c2f 782extern uint64_t spa_freeze_txg(spa_t *spa);
34dc7c2f 783extern uint64_t spa_get_asize(spa_t *spa, uint64_t lsize);
428870ff
BB		 784extern uint64_t spa_get_dspace(spa_t *spa);
785extern void spa_update_dspace(spa_t *spa);
34dc7c2f 786extern uint64_t spa_version(spa_t *spa);
428870ff
BB		 787extern boolean_t spa_deflate(spa_t *spa);
788extern metaslab_class_t *spa_normal_class(spa_t *spa);
789extern metaslab_class_t *spa_log_class(spa_t *spa);
34dc7c2f 790extern int spa_max_replication(spa_t *spa);
428870ff 791extern int spa_prev_software_version(spa_t *spa);
34dc7c2f
BB		 792extern int spa_busy(void);
793extern uint8_t spa_get_failmode(spa_t *spa);
b128c09f 794extern boolean_t spa_suspended(spa_t *spa);
428870ff
BB		 795extern uint64_t spa_bootfs(spa_t *spa);
796extern uint64_t spa_delegation(spa_t *spa);
797extern objset_t *spa_meta_objset(spa_t *spa);
cc92e9d0 798extern uint64_t spa_deadman_synctime(spa_t *spa);
34dc7c2f
BB		 799
800/* Miscellaneous support routines */
b0bc7a84
MG		 801extern void spa_activate_mos_feature(spa_t *spa, const char *feature,
802 dmu_tx_t *tx);
9ae529ec 803extern void spa_deactivate_mos_feature(spa_t *spa, const char *feature);
34dc7c2f 804extern int spa_rename(const char *oldname, const char *newname);
572e2857 805extern spa_t *spa_by_guid(uint64_t pool_guid, uint64_t device_guid);
34dc7c2f
BB		 806extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid);
807extern char *spa_strdup(const char *);
808extern void spa_strfree(char *);
809extern uint64_t spa_get_random(uint64_t range);
428870ff 810extern uint64_t spa_generate_guid(spa_t *spa);
b0bc7a84 811extern void snprintf_blkptr(char *buf, size_t buflen, const blkptr_t *bp);
34dc7c2f 812extern void spa_freeze(spa_t *spa);
3541dc6d 813extern int spa_change_guid(spa_t *spa);
34dc7c2f
BB		 814extern void spa_upgrade(spa_t *spa, uint64_t version);
815extern void spa_evict_all(void);
b128c09f
BB		 816extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid,
817 boolean_t l2cache);
34dc7c2f 818extern boolean_t spa_has_spare(spa_t *, uint64_t guid);
428870ff
BB		 819extern uint64_t dva_get_dsize_sync(spa_t *spa, const dva_t *dva);
820extern uint64_t bp_get_dsize_sync(spa_t *spa, const blkptr_t *bp);
821extern uint64_t bp_get_dsize(spa_t *spa, const blkptr_t *bp);
34dc7c2f 822extern boolean_t spa_has_slogs(spa_t *spa);
b128c09f 823extern boolean_t spa_is_root(spa_t *spa);
fb5f0bc8 824extern boolean_t spa_writeable(spa_t *spa);
acbad6ff 825extern boolean_t spa_has_pending_synctask(spa_t *spa);
428870ff 826
fb5f0bc8 827extern int spa_mode(spa_t *spa);
428870ff 828extern uint64_t strtonum(const char *str, char **nptr);
34dc7c2f 829
34dc7c2f
BB		 830extern char *spa_his_ievent_table[];
831
832extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx);
833extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read,
834 char *his_buf);
6f1ffb06
MA		 835extern int spa_history_log(spa_t *spa, const char *his_buf);
836extern int spa_history_log_nvl(spa_t *spa, nvlist_t *nvl);
837extern void spa_history_log_version(spa_t *spa, const char *operation);
838extern void spa_history_log_internal(spa_t *spa, const char *operation,
839 dmu_tx_t *tx, const char *fmt, ...);
840extern void spa_history_log_internal_ds(struct dsl_dataset *ds, const char *op,
841 dmu_tx_t *tx, const char *fmt, ...);
842extern void spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation,
843 dmu_tx_t *tx, const char *fmt, ...);
34dc7c2f
BB		 844
845/* error handling */
5dbd68a3 846struct zbookmark_phys;
428870ff 847extern void spa_log_error(spa_t *spa, zio_t *zio);
34dc7c2f 848extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
428870ff 849 zio_t *zio, uint64_t stateoroffset, uint64_t length);
34dc7c2f 850extern void zfs_post_remove(spa_t *spa, vdev_t *vd);
428870ff 851extern void zfs_post_state_change(spa_t *spa, vdev_t *vd);
34dc7c2f
BB		 852extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd);
853extern uint64_t spa_get_errlog_size(spa_t *spa);
854extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count);
855extern void spa_errlog_rotate(spa_t *spa);
856extern void spa_errlog_drain(spa_t *spa);
857extern void spa_errlog_sync(spa_t *spa, uint64_t txg);
858extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub);
859
860/* vdev cache */
861extern void vdev_cache_stat_init(void);
862extern void vdev_cache_stat_fini(void);
863
864/* Initialization and termination */
865extern void spa_init(int flags);
866extern void spa_fini(void);
0bc8fd78 867extern void spa_boot_init(void);
34dc7c2f
BB		 868
869/* properties */
870extern int spa_prop_set(spa_t *spa, nvlist_t *nvp);
871extern int spa_prop_get(spa_t *spa, nvlist_t **nvp);
872extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx);
d164b209 873extern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t);
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BB		 874
875/* asynchronous event notification */
876extern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name);
877
878#ifdef ZFS_DEBUG
b8d06fca
RY		 879#define dprintf_bp(bp, fmt, ...) do { \
880 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
881 char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_PUSHPAGE); \
b0bc7a84 882 snprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \
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RY		 883 dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \
884 kmem_free(__blkbuf, BP_SPRINTF_LEN); \
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BB		 885 } \
886_NOTE(CONSTCOND) } while (0)
887#else
888#define dprintf_bp(bp, fmt, ...)
889#endif
890
6d974228
GW		 891extern boolean_t spa_debug_enabled(spa_t *spa);
892#define spa_dbgmsg(spa, ...) \
893{ \
894 if (spa_debug_enabled(spa)) \
895 zfs_dbgmsg(__VA_ARGS__); \
896}
897
fb5f0bc8 898extern int spa_mode_global; /* mode, e.g. FREAD | FWRITE */
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BB		 899
900#ifdef __cplusplus
901}
902#endif
903
904#endif /* _SYS_SPA_H */
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