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 | /* |
22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
23 | * Copyright (c) 2011, 2014 by Delphix. All rights reserved. |
24 | * Copyright 2011 Nexenta Systems, Inc. All rights reserved. |
25 | * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. |
26 | * Copyright 2013 Saso Kiselkov. All rights reserved. |
27 | * Copyright (c) 2014 Integros [integros.com] |
28 | */ |
29 | |
30 | #ifndef _SYS_SPA_H |
31 | #define _SYS_SPA_H |
32 | |
33 | #include <sys/avl.h> |
34 | #include <sys/zfs_context.h> |
35 | #include <sys/nvpair.h> |
36 | #include <sys/sysmacros.h> |
37 | #include <sys/types.h> |
38 | #include <sys/fs/zfs.h> |
39 | |
40 | #ifdef __cplusplus |
41 | extern "C" { |
42 | #endif |
43 | |
44 | /* |
45 | * Forward references that lots of things need. |
46 | */ |
47 | typedef struct spa spa_t; |
48 | typedef struct vdev vdev_t; |
49 | typedef struct metaslab metaslab_t; |
50 | typedef struct metaslab_group metaslab_group_t; |
51 | typedef struct metaslab_class metaslab_class_t; |
52 | typedef struct zio zio_t; |
53 | typedef struct zilog zilog_t; |
54 | typedef struct spa_aux_vdev spa_aux_vdev_t; |
55 | typedef struct ddt ddt_t; |
56 | typedef struct ddt_entry ddt_entry_t; |
57 | struct dsl_pool; |
58 | struct dsl_dataset; |
59 | |
60 | /* |
61 | * General-purpose 32-bit and 64-bit bitfield encodings. |
62 | */ |
63 | #define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len)) |
64 | #define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len)) |
65 | #define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low)) |
66 | #define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low)) |
67 | |
68 | #define BF32_GET(x, low, len) BF32_DECODE(x, low, len) |
69 | #define BF64_GET(x, low, len) BF64_DECODE(x, low, len) |
70 | |
71 | #define BF32_SET(x, low, len, val) do { \ |
72 | ASSERT3U(val, <, 1U << (len)); \ |
73 | ASSERT3U(low + len, <=, 32); \ |
74 | (x) ^= BF32_ENCODE((x >> low) ^ (val), low, len); \ |
75 | _NOTE(CONSTCOND) } while (0) |
76 | |
77 | #define BF64_SET(x, low, len, val) do { \ |
78 | ASSERT3U(val, <, 1ULL << (len)); \ |
79 | ASSERT3U(low + len, <=, 64); \ |
80 | ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)); \ |
81 | _NOTE(CONSTCOND) } while (0) |
82 | |
83 | #define BF32_GET_SB(x, low, len, shift, bias) \ |
84 | ((BF32_GET(x, low, len) + (bias)) << (shift)) |
85 | #define BF64_GET_SB(x, low, len, shift, bias) \ |
86 | ((BF64_GET(x, low, len) + (bias)) << (shift)) |
87 | |
88 | #define BF32_SET_SB(x, low, len, shift, bias, val) do { \ |
89 | ASSERT(IS_P2ALIGNED(val, 1U << shift)); \ |
90 | ASSERT3S((val) >> (shift), >=, bias); \ |
91 | BF32_SET(x, low, len, ((val) >> (shift)) - (bias)); \ |
92 | _NOTE(CONSTCOND) } while (0) |
93 | #define BF64_SET_SB(x, low, len, shift, bias, val) do { \ |
94 | ASSERT(IS_P2ALIGNED(val, 1ULL << shift)); \ |
95 | ASSERT3S((val) >> (shift), >=, bias); \ |
96 | BF64_SET(x, low, len, ((val) >> (shift)) - (bias)); \ |
97 | _NOTE(CONSTCOND) } while (0) |
98 | |
99 | /* |
100 | * We currently support block sizes from 512 bytes to 16MB. |
101 | * The benefits of larger blocks, and thus larger IO, need to be weighed |
102 | * against the cost of COWing a giant block to modify one byte, and the |
103 | * large latency of reading or writing a large block. |
104 | * |
105 | * Note that although blocks up to 16MB are supported, the recordsize |
106 | * property can not be set larger than zfs_max_recordsize (default 1MB). |
107 | * See the comment near zfs_max_recordsize in dsl_dataset.c for details. |
108 | * |
109 | * Note that although the LSIZE field of the blkptr_t can store sizes up |
110 | * to 32MB, the dnode's dn_datablkszsec can only store sizes up to |
111 | * 32MB - 512 bytes. Therefore, we limit SPA_MAXBLOCKSIZE to 16MB. |
112 | */ |
113 | #define SPA_MINBLOCKSHIFT 9 |
114 | #define SPA_OLD_MAXBLOCKSHIFT 17 |
115 | #define SPA_MAXBLOCKSHIFT 24 |
116 | #define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT) |
117 | #define SPA_OLD_MAXBLOCKSIZE (1ULL << SPA_OLD_MAXBLOCKSHIFT) |
118 | #define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT) |
119 | |
120 | /* |
121 | * Default maximum supported logical ashift. |
122 | * |
123 | * The current 8k allocation block size limit is due to the 8k |
124 | * aligned/sized operations performed by vdev_probe() on |
125 | * vdev_label->vl_pad2. Using another "safe region" for these tests |
126 | * would allow the limit to be raised to 16k, at the expense of |
127 | * only having 8 available uberblocks in the label area. |
128 | */ |
129 | #define SPA_MAXASHIFT 13 |
130 | |
131 | /* |
132 | * Default minimum supported logical ashift. |
133 | */ |
134 | #define SPA_MINASHIFT SPA_MINBLOCKSHIFT |
135 | |
136 | /* |
137 | * Size of block to hold the configuration data (a packed nvlist) |
138 | */ |
139 | #define SPA_CONFIG_BLOCKSIZE (1ULL << 14) |
140 | |
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 | |
152 | #define SPA_COMPRESSBITS 7 |
153 | |
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 | */ |
158 | typedef struct dva { |
159 | uint64_t dva_word[2]; |
160 | } dva_t; |
161 | |
162 | /* |
163 | * Each block has a 256-bit checksum -- strong enough for cryptographic hashes. |
164 | */ |
165 | typedef struct zio_cksum { |
166 | uint64_t zc_word[4]; |
167 | } zio_cksum_t; |
168 | |
169 | /* |
170 | * Some checksums/hashes need a 256-bit initialization salt. This salt is kept |
171 | * secret and is suitable for use in MAC algorithms as the key. |
172 | */ |
173 | typedef struct zio_cksum_salt { |
174 | uint8_t zcs_bytes[32]; |
175 | } zio_cksum_salt_t; |
176 | |
177 | /* |
178 | * Each block is described by its DVAs, time of birth, checksum, etc. |
179 | * The word-by-word, bit-by-bit layout of the blkptr is as follows: |
180 | * |
181 | * 64 56 48 40 32 24 16 8 0 |
182 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
183 | * 0 | vdev1 | GRID | ASIZE | |
184 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
185 | * 1 |G| offset1 | |
186 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
187 | * 2 | vdev2 | GRID | ASIZE | |
188 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
189 | * 3 |G| offset2 | |
190 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
191 | * 4 | vdev3 | GRID | ASIZE | |
192 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
193 | * 5 |G| offset3 | |
194 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
195 | * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE | |
196 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
197 | * 7 | padding | |
198 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
199 | * 8 | padding | |
200 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
201 | * 9 | physical birth txg | |
202 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
203 | * a | logical birth txg | |
204 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
205 | * b | fill count | |
206 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
207 | * c | checksum[0] | |
208 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
209 | * d | checksum[1] | |
210 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
211 | * e | checksum[2] | |
212 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
213 | * f | checksum[3] | |
214 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
215 | * |
216 | * Legend: |
217 | * |
218 | * vdev virtual device ID |
219 | * offset offset into virtual device |
220 | * LSIZE logical size |
221 | * PSIZE physical size (after compression) |
222 | * ASIZE allocated size (including RAID-Z parity and gang block headers) |
223 | * GRID RAID-Z layout information (reserved for future use) |
224 | * cksum checksum function |
225 | * comp compression function |
226 | * G gang block indicator |
227 | * B byteorder (endianness) |
228 | * D dedup |
229 | * X encryption (on version 30, which is not supported) |
230 | * E blkptr_t contains embedded data (see below) |
231 | * lvl level of indirection |
232 | * type DMU object type |
233 | * phys birth txg of block allocation; zero if same as logical birth txg |
234 | * log. birth transaction group in which the block was logically born |
235 | * fill count number of non-zero blocks under this bp |
236 | * checksum[4] 256-bit checksum of the data this bp describes |
237 | */ |
238 | |
239 | /* |
240 | * "Embedded" blkptr_t's don't actually point to a block, instead they |
241 | * have a data payload embedded in the blkptr_t itself. See the comment |
242 | * in blkptr.c for more details. |
243 | * |
244 | * The blkptr_t is laid out as follows: |
245 | * |
246 | * 64 56 48 40 32 24 16 8 0 |
247 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
248 | * 0 | payload | |
249 | * 1 | payload | |
250 | * 2 | payload | |
251 | * 3 | payload | |
252 | * 4 | payload | |
253 | * 5 | payload | |
254 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
255 | * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE | |
256 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
257 | * 7 | payload | |
258 | * 8 | payload | |
259 | * 9 | payload | |
260 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
261 | * a | logical birth txg | |
262 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
263 | * b | payload | |
264 | * c | payload | |
265 | * d | payload | |
266 | * e | payload | |
267 | * f | payload | |
268 | * +-------+-------+-------+-------+-------+-------+-------+-------+ |
269 | * |
270 | * Legend: |
271 | * |
272 | * payload contains the embedded data |
273 | * B (byteorder) byteorder (endianness) |
274 | * D (dedup) padding (set to zero) |
275 | * X encryption (set to zero; see above) |
276 | * E (embedded) set to one |
277 | * lvl indirection level |
278 | * type DMU object type |
279 | * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*) |
280 | * comp compression function of payload |
281 | * PSIZE size of payload after compression, in bytes |
282 | * LSIZE logical size of payload, in bytes |
283 | * note that 25 bits is enough to store the largest |
284 | * "normal" BP's LSIZE (2^16 * 2^9) in bytes |
285 | * log. birth transaction group in which the block was logically born |
286 | * |
287 | * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded |
288 | * bp's they are stored in units of SPA_MINBLOCKSHIFT. |
289 | * Generally, the generic BP_GET_*() macros can be used on embedded BP's. |
290 | * The B, D, X, lvl, type, and comp fields are stored the same as with normal |
291 | * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must |
292 | * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before |
293 | * other macros, as they assert that they are only used on BP's of the correct |
294 | * "embedded-ness". |
295 | */ |
296 | |
297 | #define BPE_GET_ETYPE(bp) \ |
298 | (ASSERT(BP_IS_EMBEDDED(bp)), \ |
299 | BF64_GET((bp)->blk_prop, 40, 8)) |
300 | #define BPE_SET_ETYPE(bp, t) do { \ |
301 | ASSERT(BP_IS_EMBEDDED(bp)); \ |
302 | BF64_SET((bp)->blk_prop, 40, 8, t); \ |
303 | _NOTE(CONSTCOND) } while (0) |
304 | |
305 | #define BPE_GET_LSIZE(bp) \ |
306 | (ASSERT(BP_IS_EMBEDDED(bp)), \ |
307 | BF64_GET_SB((bp)->blk_prop, 0, 25, 0, 1)) |
308 | #define BPE_SET_LSIZE(bp, x) do { \ |
309 | ASSERT(BP_IS_EMBEDDED(bp)); \ |
310 | BF64_SET_SB((bp)->blk_prop, 0, 25, 0, 1, x); \ |
311 | _NOTE(CONSTCOND) } while (0) |
312 | |
313 | #define BPE_GET_PSIZE(bp) \ |
314 | (ASSERT(BP_IS_EMBEDDED(bp)), \ |
315 | BF64_GET_SB((bp)->blk_prop, 25, 7, 0, 1)) |
316 | #define BPE_SET_PSIZE(bp, x) do { \ |
317 | ASSERT(BP_IS_EMBEDDED(bp)); \ |
318 | BF64_SET_SB((bp)->blk_prop, 25, 7, 0, 1, x); \ |
319 | _NOTE(CONSTCOND) } while (0) |
320 | |
321 | typedef enum bp_embedded_type { |
322 | BP_EMBEDDED_TYPE_DATA, |
323 | BP_EMBEDDED_TYPE_RESERVED, /* Reserved for an unintegrated feature. */ |
324 | NUM_BP_EMBEDDED_TYPES = BP_EMBEDDED_TYPE_RESERVED |
325 | } bp_embedded_type_t; |
326 | |
327 | #define BPE_NUM_WORDS 14 |
328 | #define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t)) |
329 | #define BPE_IS_PAYLOADWORD(bp, wp) \ |
330 | ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth) |
331 | |
332 | #define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */ |
333 | #define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */ |
334 | |
335 | /* |
336 | * A block is a hole when it has either 1) never been written to, or |
337 | * 2) is zero-filled. In both cases, ZFS can return all zeroes for all reads |
338 | * without physically allocating disk space. Holes are represented in the |
339 | * blkptr_t structure by zeroed blk_dva. Correct checking for holes is |
340 | * done through the BP_IS_HOLE macro. For holes, the logical size, level, |
341 | * DMU object type, and birth times are all also stored for holes that |
342 | * were written to at some point (i.e. were punched after having been filled). |
343 | */ |
344 | typedef struct blkptr { |
345 | dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */ |
346 | uint64_t blk_prop; /* size, compression, type, etc */ |
347 | uint64_t blk_pad[2]; /* Extra space for the future */ |
348 | uint64_t blk_phys_birth; /* txg when block was allocated */ |
349 | uint64_t blk_birth; /* transaction group at birth */ |
350 | uint64_t blk_fill; /* fill count */ |
351 | zio_cksum_t blk_cksum; /* 256-bit checksum */ |
352 | } blkptr_t; |
353 | |
354 | /* |
355 | * Macros to get and set fields in a bp or DVA. |
356 | */ |
357 | #define DVA_GET_ASIZE(dva) \ |
358 | BF64_GET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, SPA_MINBLOCKSHIFT, 0) |
359 | #define DVA_SET_ASIZE(dva, x) \ |
360 | BF64_SET_SB((dva)->dva_word[0], 0, SPA_ASIZEBITS, \ |
361 | SPA_MINBLOCKSHIFT, 0, x) |
362 | |
363 | #define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8) |
364 | #define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x) |
365 | |
366 | #define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32) |
367 | #define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x) |
368 | |
369 | #define DVA_GET_OFFSET(dva) \ |
370 | BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0) |
371 | #define DVA_SET_OFFSET(dva, x) \ |
372 | BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x) |
373 | |
374 | #define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1) |
375 | #define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x) |
376 | |
377 | #define BP_GET_LSIZE(bp) \ |
378 | (BP_IS_EMBEDDED(bp) ? \ |
379 | (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \ |
380 | BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1)) |
381 | #define BP_SET_LSIZE(bp, x) do { \ |
382 | ASSERT(!BP_IS_EMBEDDED(bp)); \ |
383 | BF64_SET_SB((bp)->blk_prop, \ |
384 | 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \ |
385 | _NOTE(CONSTCOND) } while (0) |
386 | |
387 | #define BP_GET_PSIZE(bp) \ |
388 | (BP_IS_EMBEDDED(bp) ? 0 : \ |
389 | BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1)) |
390 | #define BP_SET_PSIZE(bp, x) do { \ |
391 | ASSERT(!BP_IS_EMBEDDED(bp)); \ |
392 | BF64_SET_SB((bp)->blk_prop, \ |
393 | 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \ |
394 | _NOTE(CONSTCOND) } while (0) |
395 | |
396 | #define BP_GET_COMPRESS(bp) \ |
397 | BF64_GET((bp)->blk_prop, 32, SPA_COMPRESSBITS) |
398 | #define BP_SET_COMPRESS(bp, x) \ |
399 | BF64_SET((bp)->blk_prop, 32, SPA_COMPRESSBITS, x) |
400 | |
401 | #define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1) |
402 | #define BP_SET_EMBEDDED(bp, x) BF64_SET((bp)->blk_prop, 39, 1, x) |
403 | |
404 | #define BP_GET_CHECKSUM(bp) \ |
405 | (BP_IS_EMBEDDED(bp) ? ZIO_CHECKSUM_OFF : \ |
406 | BF64_GET((bp)->blk_prop, 40, 8)) |
407 | #define BP_SET_CHECKSUM(bp, x) do { \ |
408 | ASSERT(!BP_IS_EMBEDDED(bp)); \ |
409 | BF64_SET((bp)->blk_prop, 40, 8, x); \ |
410 | _NOTE(CONSTCOND) } while (0) |
411 | |
412 | #define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8) |
413 | #define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x) |
414 | |
415 | #define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5) |
416 | #define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x) |
417 | |
418 | #define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1) |
419 | #define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x) |
420 | |
421 | #define BP_GET_BYTEORDER(bp) BF64_GET((bp)->blk_prop, 63, 1) |
422 | #define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x) |
423 | |
424 | #define BP_PHYSICAL_BIRTH(bp) \ |
425 | (BP_IS_EMBEDDED(bp) ? 0 : \ |
426 | (bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth) |
427 | |
428 | #define BP_SET_BIRTH(bp, logical, physical) \ |
429 | { \ |
430 | ASSERT(!BP_IS_EMBEDDED(bp)); \ |
431 | (bp)->blk_birth = (logical); \ |
432 | (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \ |
433 | } |
434 | |
435 | #define BP_GET_FILL(bp) (BP_IS_EMBEDDED(bp) ? 1 : (bp)->blk_fill) |
436 | |
437 | #define BP_GET_ASIZE(bp) \ |
438 | (BP_IS_EMBEDDED(bp) ? 0 : \ |
439 | DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ |
440 | DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ |
441 | DVA_GET_ASIZE(&(bp)->blk_dva[2])) |
442 | |
443 | #define BP_GET_UCSIZE(bp) \ |
444 | ((BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) ? \ |
445 | BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp)) |
446 | |
447 | #define BP_GET_NDVAS(bp) \ |
448 | (BP_IS_EMBEDDED(bp) ? 0 : \ |
449 | !!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ |
450 | !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ |
451 | !!DVA_GET_ASIZE(&(bp)->blk_dva[2])) |
452 | |
453 | #define BP_COUNT_GANG(bp) \ |
454 | (BP_IS_EMBEDDED(bp) ? 0 : \ |
455 | (DVA_GET_GANG(&(bp)->blk_dva[0]) + \ |
456 | DVA_GET_GANG(&(bp)->blk_dva[1]) + \ |
457 | DVA_GET_GANG(&(bp)->blk_dva[2]))) |
458 | |
459 | #define DVA_EQUAL(dva1, dva2) \ |
460 | ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \ |
461 | (dva1)->dva_word[0] == (dva2)->dva_word[0]) |
462 | |
463 | #define BP_EQUAL(bp1, bp2) \ |
464 | (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \ |
465 | (bp1)->blk_birth == (bp2)->blk_birth && \ |
466 | DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \ |
467 | DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \ |
468 | DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2])) |
469 | |
470 | #define ZIO_CHECKSUM_EQUAL(zc1, zc2) \ |
471 | (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \ |
472 | ((zc1).zc_word[1] - (zc2).zc_word[1]) | \ |
473 | ((zc1).zc_word[2] - (zc2).zc_word[2]) | \ |
474 | ((zc1).zc_word[3] - (zc2).zc_word[3]))) |
475 | |
476 | #define ZIO_CHECKSUM_IS_ZERO(zc) \ |
477 | (0 == ((zc)->zc_word[0] | (zc)->zc_word[1] | \ |
478 | (zc)->zc_word[2] | (zc)->zc_word[3])) |
479 | |
480 | #define ZIO_CHECKSUM_BSWAP(zcp) \ |
481 | { \ |
482 | (zcp)->zc_word[0] = BSWAP_64((zcp)->zc_word[0]); \ |
483 | (zcp)->zc_word[1] = BSWAP_64((zcp)->zc_word[1]); \ |
484 | (zcp)->zc_word[2] = BSWAP_64((zcp)->zc_word[2]); \ |
485 | (zcp)->zc_word[3] = BSWAP_64((zcp)->zc_word[3]); \ |
486 | } |
487 | |
488 | |
489 | #define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0) |
490 | |
491 | #define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \ |
492 | { \ |
493 | (zcp)->zc_word[0] = w0; \ |
494 | (zcp)->zc_word[1] = w1; \ |
495 | (zcp)->zc_word[2] = w2; \ |
496 | (zcp)->zc_word[3] = w3; \ |
497 | } |
498 | |
499 | #define BP_IDENTITY(bp) (ASSERT(!BP_IS_EMBEDDED(bp)), &(bp)->blk_dva[0]) |
500 | #define BP_IS_GANG(bp) \ |
501 | (BP_IS_EMBEDDED(bp) ? B_FALSE : DVA_GET_GANG(BP_IDENTITY(bp))) |
502 | #define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \ |
503 | (dva)->dva_word[1] == 0ULL) |
504 | #define BP_IS_HOLE(bp) \ |
505 | (!BP_IS_EMBEDDED(bp) && DVA_IS_EMPTY(BP_IDENTITY(bp))) |
506 | |
507 | /* BP_IS_RAIDZ(bp) assumes no block compression */ |
508 | #define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \ |
509 | BP_GET_PSIZE(bp)) |
510 | |
511 | #define BP_ZERO(bp) \ |
512 | { \ |
513 | (bp)->blk_dva[0].dva_word[0] = 0; \ |
514 | (bp)->blk_dva[0].dva_word[1] = 0; \ |
515 | (bp)->blk_dva[1].dva_word[0] = 0; \ |
516 | (bp)->blk_dva[1].dva_word[1] = 0; \ |
517 | (bp)->blk_dva[2].dva_word[0] = 0; \ |
518 | (bp)->blk_dva[2].dva_word[1] = 0; \ |
519 | (bp)->blk_prop = 0; \ |
520 | (bp)->blk_pad[0] = 0; \ |
521 | (bp)->blk_pad[1] = 0; \ |
522 | (bp)->blk_phys_birth = 0; \ |
523 | (bp)->blk_birth = 0; \ |
524 | (bp)->blk_fill = 0; \ |
525 | ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \ |
526 | } |
527 | |
528 | #if BYTE_ORDER == _BIG_ENDIAN |
529 | #define ZFS_HOST_BYTEORDER (0ULL) |
530 | #else |
531 | #define ZFS_HOST_BYTEORDER (1ULL) |
532 | #endif |
533 | |
534 | #define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER) |
535 | |
536 | #define BP_SPRINTF_LEN 320 |
537 | |
538 | /* |
539 | * This macro allows code sharing between zfs, libzpool, and mdb. |
540 | * 'func' is either snprintf() or mdb_snprintf(). |
541 | * 'ws' (whitespace) can be ' ' for single-line format, '\n' for multi-line. |
542 | */ |
543 | #define SNPRINTF_BLKPTR(func, ws, buf, size, bp, type, checksum, compress) \ |
544 | { \ |
545 | static const char *copyname[] = \ |
546 | { "zero", "single", "double", "triple" }; \ |
547 | int len = 0; \ |
548 | int copies = 0; \ |
549 | \ |
550 | if (bp == NULL) { \ |
551 | len += func(buf + len, size - len, "<NULL>"); \ |
552 | } else if (BP_IS_HOLE(bp)) { \ |
553 | len += func(buf + len, size - len, \ |
554 | "HOLE [L%llu %s] " \ |
555 | "size=%llxL birth=%lluL", \ |
556 | (u_longlong_t)BP_GET_LEVEL(bp), \ |
557 | type, \ |
558 | (u_longlong_t)BP_GET_LSIZE(bp), \ |
559 | (u_longlong_t)bp->blk_birth); \ |
560 | } else if (BP_IS_EMBEDDED(bp)) { \ |
561 | len = func(buf + len, size - len, \ |
562 | "EMBEDDED [L%llu %s] et=%u %s " \ |
563 | "size=%llxL/%llxP birth=%lluL", \ |
564 | (u_longlong_t)BP_GET_LEVEL(bp), \ |
565 | type, \ |
566 | (int)BPE_GET_ETYPE(bp), \ |
567 | compress, \ |
568 | (u_longlong_t)BPE_GET_LSIZE(bp), \ |
569 | (u_longlong_t)BPE_GET_PSIZE(bp), \ |
570 | (u_longlong_t)bp->blk_birth); \ |
571 | } else { \ |
572 | for (int d = 0; d < BP_GET_NDVAS(bp); d++) { \ |
573 | const dva_t *dva = &bp->blk_dva[d]; \ |
574 | if (DVA_IS_VALID(dva)) \ |
575 | copies++; \ |
576 | len += func(buf + len, size - len, \ |
577 | "DVA[%d]=<%llu:%llx:%llx>%c", d, \ |
578 | (u_longlong_t)DVA_GET_VDEV(dva), \ |
579 | (u_longlong_t)DVA_GET_OFFSET(dva), \ |
580 | (u_longlong_t)DVA_GET_ASIZE(dva), \ |
581 | ws); \ |
582 | } \ |
583 | if (BP_IS_GANG(bp) && \ |
584 | DVA_GET_ASIZE(&bp->blk_dva[2]) <= \ |
585 | DVA_GET_ASIZE(&bp->blk_dva[1]) / 2) \ |
586 | copies--; \ |
587 | len += func(buf + len, size - len, \ |
588 | "[L%llu %s] %s %s %s %s %s %s%c" \ |
589 | "size=%llxL/%llxP birth=%lluL/%lluP fill=%llu%c" \ |
590 | "cksum=%llx:%llx:%llx:%llx", \ |
591 | (u_longlong_t)BP_GET_LEVEL(bp), \ |
592 | type, \ |
593 | checksum, \ |
594 | compress, \ |
595 | BP_GET_BYTEORDER(bp) == 0 ? "BE" : "LE", \ |
596 | BP_IS_GANG(bp) ? "gang" : "contiguous", \ |
597 | BP_GET_DEDUP(bp) ? "dedup" : "unique", \ |
598 | copyname[copies], \ |
599 | ws, \ |
600 | (u_longlong_t)BP_GET_LSIZE(bp), \ |
601 | (u_longlong_t)BP_GET_PSIZE(bp), \ |
602 | (u_longlong_t)bp->blk_birth, \ |
603 | (u_longlong_t)BP_PHYSICAL_BIRTH(bp), \ |
604 | (u_longlong_t)BP_GET_FILL(bp), \ |
605 | ws, \ |
606 | (u_longlong_t)bp->blk_cksum.zc_word[0], \ |
607 | (u_longlong_t)bp->blk_cksum.zc_word[1], \ |
608 | (u_longlong_t)bp->blk_cksum.zc_word[2], \ |
609 | (u_longlong_t)bp->blk_cksum.zc_word[3]); \ |
610 | } \ |
611 | ASSERT(len < size); \ |
612 | } |
613 | |
614 | #include <sys/dmu.h> |
615 | |
616 | #define BP_GET_BUFC_TYPE(bp) \ |
617 | (((BP_GET_LEVEL(bp) > 0) || (DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))) ? \ |
618 | ARC_BUFC_METADATA : ARC_BUFC_DATA) |
619 | |
620 | typedef enum spa_import_type { |
621 | SPA_IMPORT_EXISTING, |
622 | SPA_IMPORT_ASSEMBLE |
623 | } spa_import_type_t; |
624 | |
625 | /* state manipulation functions */ |
626 | extern int spa_open(const char *pool, spa_t **, void *tag); |
627 | extern int spa_open_rewind(const char *pool, spa_t **, void *tag, |
628 | nvlist_t *policy, nvlist_t **config); |
629 | extern int spa_get_stats(const char *pool, nvlist_t **config, char *altroot, |
630 | size_t buflen); |
631 | extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props, |
632 | nvlist_t *zplprops); |
633 | #ifdef illumos |
634 | extern int spa_import_rootpool(char *devpath, char *devid); |
635 | #else |
636 | extern int spa_import_rootpool(const char *name); |
637 | #endif |
638 | extern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props, |
639 | uint64_t flags); |
640 | extern nvlist_t *spa_tryimport(nvlist_t *tryconfig); |
641 | extern int spa_destroy(char *pool); |
642 | extern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force, |
643 | boolean_t hardforce); |
644 | extern int spa_reset(char *pool); |
645 | extern void spa_async_request(spa_t *spa, int flag); |
646 | extern void spa_async_unrequest(spa_t *spa, int flag); |
647 | extern void spa_async_suspend(spa_t *spa); |
648 | extern void spa_async_resume(spa_t *spa); |
649 | extern spa_t *spa_inject_addref(char *pool); |
650 | extern void spa_inject_delref(spa_t *spa); |
651 | extern void spa_scan_stat_init(spa_t *spa); |
652 | extern int spa_scan_get_stats(spa_t *spa, pool_scan_stat_t *ps); |
653 | |
654 | #define SPA_ASYNC_CONFIG_UPDATE 0x01 |
655 | #define SPA_ASYNC_REMOVE 0x02 |
656 | #define SPA_ASYNC_PROBE 0x04 |
657 | #define SPA_ASYNC_RESILVER_DONE 0x08 |
658 | #define SPA_ASYNC_RESILVER 0x10 |
659 | #define SPA_ASYNC_AUTOEXPAND 0x20 |
660 | #define SPA_ASYNC_REMOVE_DONE 0x40 |
661 | #define SPA_ASYNC_REMOVE_STOP 0x80 |
662 | |
663 | /* |
664 | * Controls the behavior of spa_vdev_remove(). |
665 | */ |
666 | #define SPA_REMOVE_UNSPARE 0x01 |
667 | #define SPA_REMOVE_DONE 0x02 |
668 | |
669 | /* device manipulation */ |
670 | extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot); |
671 | extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, |
672 | int replacing); |
673 | extern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid, |
674 | int replace_done); |
675 | extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare); |
676 | extern boolean_t spa_vdev_remove_active(spa_t *spa); |
677 | extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath); |
678 | extern int spa_vdev_setfru(spa_t *spa, uint64_t guid, const char *newfru); |
679 | extern int spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config, |
680 | nvlist_t *props, boolean_t exp); |
681 | |
682 | /* spare state (which is global across all pools) */ |
683 | extern void spa_spare_add(vdev_t *vd); |
684 | extern void spa_spare_remove(vdev_t *vd); |
685 | extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt); |
686 | extern void spa_spare_activate(vdev_t *vd); |
687 | |
688 | /* L2ARC state (which is global across all pools) */ |
689 | extern void spa_l2cache_add(vdev_t *vd); |
690 | extern void spa_l2cache_remove(vdev_t *vd); |
691 | extern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool); |
692 | extern void spa_l2cache_activate(vdev_t *vd); |
693 | extern void spa_l2cache_drop(spa_t *spa); |
694 | |
695 | /* scanning */ |
696 | extern int spa_scan(spa_t *spa, pool_scan_func_t func); |
697 | extern int spa_scan_stop(spa_t *spa); |
698 | |
699 | /* spa syncing */ |
700 | extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */ |
701 | extern void spa_sync_allpools(void); |
702 | |
703 | /* spa namespace global mutex */ |
704 | extern kmutex_t spa_namespace_lock; |
705 | |
706 | /* |
707 | * SPA configuration functions in spa_config.c |
708 | */ |
709 | |
710 | #define SPA_CONFIG_UPDATE_POOL 0 |
711 | #define SPA_CONFIG_UPDATE_VDEVS 1 |
712 | |
713 | extern void spa_config_sync(spa_t *, boolean_t, boolean_t); |
714 | extern void spa_config_load(void); |
715 | extern nvlist_t *spa_all_configs(uint64_t *); |
716 | extern void spa_config_set(spa_t *spa, nvlist_t *config); |
717 | extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, |
718 | int getstats); |
719 | extern void spa_config_update(spa_t *spa, int what); |
720 | |
721 | /* |
722 | * Miscellaneous SPA routines in spa_misc.c |
723 | */ |
724 | |
725 | /* Namespace manipulation */ |
726 | extern spa_t *spa_lookup(const char *name); |
727 | extern spa_t *spa_add(const char *name, nvlist_t *config, const char *altroot); |
728 | extern void spa_remove(spa_t *spa); |
729 | extern spa_t *spa_next(spa_t *prev); |
730 | |
731 | /* Refcount functions */ |
732 | extern void spa_open_ref(spa_t *spa, void *tag); |
733 | extern void spa_close(spa_t *spa, void *tag); |
734 | extern void spa_async_close(spa_t *spa, void *tag); |
735 | extern boolean_t spa_refcount_zero(spa_t *spa); |
736 | |
737 | #define SCL_NONE 0x00 |
738 | #define SCL_CONFIG 0x01 |
739 | #define SCL_STATE 0x02 |
740 | #define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */ |
741 | #define SCL_ALLOC 0x08 |
742 | #define SCL_ZIO 0x10 |
743 | #define SCL_FREE 0x20 |
744 | #define SCL_VDEV 0x40 |
745 | #define SCL_LOCKS 7 |
746 | #define SCL_ALL ((1 << SCL_LOCKS) - 1) |
747 | #define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO) |
748 | |
749 | /* Pool configuration locks */ |
750 | extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw); |
751 | extern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw); |
752 | extern void spa_config_exit(spa_t *spa, int locks, void *tag); |
753 | extern int spa_config_held(spa_t *spa, int locks, krw_t rw); |
754 | |
755 | /* Pool vdev add/remove lock */ |
756 | extern uint64_t spa_vdev_enter(spa_t *spa); |
757 | extern uint64_t spa_vdev_config_enter(spa_t *spa); |
758 | extern void spa_vdev_config_exit(spa_t *spa, vdev_t *vd, uint64_t txg, |
759 | int error, char *tag); |
760 | extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error); |
761 | |
762 | /* Pool vdev state change lock */ |
763 | extern void spa_vdev_state_enter(spa_t *spa, int oplock); |
764 | extern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error); |
765 | |
766 | /* Log state */ |
767 | typedef enum spa_log_state { |
768 | SPA_LOG_UNKNOWN = 0, /* unknown log state */ |
769 | SPA_LOG_MISSING, /* missing log(s) */ |
770 | SPA_LOG_CLEAR, /* clear the log(s) */ |
771 | SPA_LOG_GOOD, /* log(s) are good */ |
772 | } spa_log_state_t; |
773 | |
774 | extern spa_log_state_t spa_get_log_state(spa_t *spa); |
775 | extern void spa_set_log_state(spa_t *spa, spa_log_state_t state); |
776 | extern int spa_offline_log(spa_t *spa); |
777 | |
778 | /* Log claim callback */ |
779 | extern void spa_claim_notify(zio_t *zio); |
780 | |
781 | /* Accessor functions */ |
782 | extern boolean_t spa_shutting_down(spa_t *spa); |
783 | extern struct dsl_pool *spa_get_dsl(spa_t *spa); |
784 | extern boolean_t spa_is_initializing(spa_t *spa); |
785 | extern blkptr_t *spa_get_rootblkptr(spa_t *spa); |
786 | extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp); |
787 | extern void spa_altroot(spa_t *, char *, size_t); |
788 | extern int spa_sync_pass(spa_t *spa); |
789 | extern char *spa_name(spa_t *spa); |
790 | extern uint64_t spa_guid(spa_t *spa); |
791 | extern uint64_t spa_load_guid(spa_t *spa); |
792 | extern uint64_t spa_last_synced_txg(spa_t *spa); |
793 | extern uint64_t spa_first_txg(spa_t *spa); |
794 | extern uint64_t spa_syncing_txg(spa_t *spa); |
795 | extern uint64_t spa_version(spa_t *spa); |
796 | extern pool_state_t spa_state(spa_t *spa); |
797 | extern spa_load_state_t spa_load_state(spa_t *spa); |
798 | extern uint64_t spa_freeze_txg(spa_t *spa); |
799 | extern uint64_t spa_get_asize(spa_t *spa, uint64_t lsize); |
800 | extern uint64_t spa_get_dspace(spa_t *spa); |
801 | extern uint64_t spa_get_slop_space(spa_t *spa); |
802 | extern void spa_update_dspace(spa_t *spa); |
803 | extern uint64_t spa_version(spa_t *spa); |
804 | extern boolean_t spa_deflate(spa_t *spa); |
805 | extern metaslab_class_t *spa_normal_class(spa_t *spa); |
806 | extern metaslab_class_t *spa_log_class(spa_t *spa); |
807 | extern void spa_evicting_os_register(spa_t *, objset_t *os); |
808 | extern void spa_evicting_os_deregister(spa_t *, objset_t *os); |
809 | extern void spa_evicting_os_wait(spa_t *spa); |
810 | extern int spa_max_replication(spa_t *spa); |
811 | extern int spa_prev_software_version(spa_t *spa); |
812 | extern int spa_busy(void); |
813 | extern uint8_t spa_get_failmode(spa_t *spa); |
814 | extern boolean_t spa_suspended(spa_t *spa); |
815 | extern uint64_t spa_bootfs(spa_t *spa); |
816 | extern uint64_t spa_delegation(spa_t *spa); |
817 | extern objset_t *spa_meta_objset(spa_t *spa); |
818 | extern uint64_t spa_deadman_synctime(spa_t *spa); |
819 | |
820 | /* Miscellaneous support routines */ |
821 | extern void spa_activate_mos_feature(spa_t *spa, const char *feature, |
822 | dmu_tx_t *tx); |
823 | extern void spa_deactivate_mos_feature(spa_t *spa, const char *feature); |
824 | extern int spa_rename(const char *oldname, const char *newname); |
825 | extern spa_t *spa_by_guid(uint64_t pool_guid, uint64_t device_guid); |
826 | extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid); |
827 | extern char *spa_strdup(const char *); |
828 | extern void spa_strfree(char *); |
829 | extern uint64_t spa_get_random(uint64_t range); |
830 | extern uint64_t spa_generate_guid(spa_t *spa); |
831 | extern void snprintf_blkptr(char *buf, size_t buflen, const blkptr_t *bp); |
832 | extern void spa_freeze(spa_t *spa); |
833 | extern int spa_change_guid(spa_t *spa); |
834 | extern void spa_upgrade(spa_t *spa, uint64_t version); |
835 | extern void spa_evict_all(void); |
836 | extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid, |
837 | boolean_t l2cache); |
838 | extern boolean_t spa_has_spare(spa_t *, uint64_t guid); |
839 | extern uint64_t dva_get_dsize_sync(spa_t *spa, const dva_t *dva); |
840 | extern uint64_t bp_get_dsize_sync(spa_t *spa, const blkptr_t *bp); |
841 | extern uint64_t bp_get_dsize(spa_t *spa, const blkptr_t *bp); |
842 | extern boolean_t spa_has_slogs(spa_t *spa); |
843 | extern boolean_t spa_is_root(spa_t *spa); |
844 | extern boolean_t spa_writeable(spa_t *spa); |
845 | extern boolean_t spa_has_pending_synctask(spa_t *spa); |
846 | extern int spa_maxblocksize(spa_t *spa); |
847 | extern void zfs_blkptr_verify(spa_t *spa, const blkptr_t *bp); |
848 | |
849 | extern int spa_mode(spa_t *spa); |
850 | extern uint64_t zfs_strtonum(const char *str, char **nptr); |
851 | #define strtonum(str, nptr) zfs_strtonum((str), (nptr)) |
852 | |
853 | extern char *spa_his_ievent_table[]; |
854 | |
855 | extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx); |
856 | extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read, |
857 | char *his_buf); |
858 | extern int spa_history_log(spa_t *spa, const char *his_buf); |
859 | extern int spa_history_log_nvl(spa_t *spa, nvlist_t *nvl); |
860 | extern void spa_history_log_version(spa_t *spa, const char *operation); |
861 | extern void spa_history_log_internal(spa_t *spa, const char *operation, |
862 | dmu_tx_t *tx, const char *fmt, ...); |
863 | extern void spa_history_log_internal_ds(struct dsl_dataset *ds, const char *op, |
864 | dmu_tx_t *tx, const char *fmt, ...); |
865 | extern void spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation, |
866 | dmu_tx_t *tx, const char *fmt, ...); |
867 | |
868 | /* error handling */ |
869 | struct zbookmark_phys; |
870 | extern void spa_log_error(spa_t *spa, zio_t *zio); |
871 | extern void zfs_ereport_post(const char *cls, spa_t *spa, vdev_t *vd, |
872 | zio_t *zio, uint64_t stateoroffset, uint64_t length); |
873 | extern void zfs_post_remove(spa_t *spa, vdev_t *vd); |
874 | extern void zfs_post_state_change(spa_t *spa, vdev_t *vd); |
875 | extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd); |
876 | extern uint64_t spa_get_errlog_size(spa_t *spa); |
877 | extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count); |
878 | extern void spa_errlog_rotate(spa_t *spa); |
879 | extern void spa_errlog_drain(spa_t *spa); |
880 | extern void spa_errlog_sync(spa_t *spa, uint64_t txg); |
881 | extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub); |
882 | |
883 | /* vdev cache */ |
884 | extern void vdev_cache_stat_init(void); |
885 | extern void vdev_cache_stat_fini(void); |
886 | |
887 | /* Initialization and termination */ |
888 | extern void spa_init(int flags); |
889 | extern void spa_fini(void); |
890 | extern void spa_boot_init(); |
891 | |
892 | /* properties */ |
893 | extern int spa_prop_set(spa_t *spa, nvlist_t *nvp); |
894 | extern int spa_prop_get(spa_t *spa, nvlist_t **nvp); |
895 | extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx); |
896 | extern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t); |
897 | |
898 | /* asynchronous event notification */ |
899 | extern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name); |
900 | |
901 | #ifdef ZFS_DEBUG |
902 | #define dprintf_bp(bp, fmt, ...) do { \ |
903 | if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ |
904 | char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \ |
905 | snprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \ |
906 | dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \ |
907 | kmem_free(__blkbuf, BP_SPRINTF_LEN); \ |
908 | } \ |
909 | _NOTE(CONSTCOND) } while (0) |
910 | #else |
911 | #define dprintf_bp(bp, fmt, ...) |
912 | #endif |
913 | |
914 | extern boolean_t spa_debug_enabled(spa_t *spa); |
915 | #define spa_dbgmsg(spa, ...) \ |
916 | { \ |
917 | if (spa_debug_enabled(spa)) \ |
918 | zfs_dbgmsg(__VA_ARGS__); \ |
919 | } |
920 | |
921 | extern int spa_mode_global; /* mode, e.g. FREAD | FWRITE */ |
922 | |
923 | #ifdef __cplusplus |
924 | } |
925 | #endif |
926 | |
927 | #endif /* _SYS_SPA_H */ |
928 | |