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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/*
d164b209 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
34dc7c2f
BB		 23 * Use is subject to license terms.
24 */
25
26#ifndef _SYS_SPA_H
27#define _SYS_SPA_H
28
34dc7c2f
BB		 29#include <sys/avl.h>
30#include <sys/zfs_context.h>
31#include <sys/nvpair.h>
32#include <sys/sysmacros.h>
33#include <sys/types.h>
34#include <sys/fs/zfs.h>
35
36#ifdef __cplusplus
37extern "C" {
38#endif
39
40/*
41 * Forward references that lots of things need.
42 */
43typedef struct spa spa_t;
44typedef struct vdev vdev_t;
45typedef struct metaslab metaslab_t;
46typedef struct zilog zilog_t;
34dc7c2f
BB		 47typedef struct spa_aux_vdev spa_aux_vdev_t;
48struct dsl_pool;
49
50/*
51 * General-purpose 32-bit and 64-bit bitfield encodings.
52 */
53#define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len))
54#define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len))
55#define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low))
56#define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low))
57
58#define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
59#define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
60
61#define BF32_SET(x, low, len, val) \
62 ((x) ^= BF32_ENCODE((x >> low) ^ (val), low, len))
63#define BF64_SET(x, low, len, val) \
64 ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len))
65
66#define BF32_GET_SB(x, low, len, shift, bias) \
67 ((BF32_GET(x, low, len) + (bias)) << (shift))
68#define BF64_GET_SB(x, low, len, shift, bias) \
69 ((BF64_GET(x, low, len) + (bias)) << (shift))
70
71#define BF32_SET_SB(x, low, len, shift, bias, val) \
72 BF32_SET(x, low, len, ((val) >> (shift)) - (bias))
73#define BF64_SET_SB(x, low, len, shift, bias, val) \
74 BF64_SET(x, low, len, ((val) >> (shift)) - (bias))
75
76/*
77 * We currently support nine block sizes, from 512 bytes to 128K.
78 * We could go higher, but the benefits are near-zero and the cost
79 * of COWing a giant block to modify one byte would become excessive.
80 */
81#define SPA_MINBLOCKSHIFT 9
82#define SPA_MAXBLOCKSHIFT 17
83#define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT)
84#define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT)
85
86#define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)
87
b128c09f
BB		 88/*
89 * Size of block to hold the configuration data (a packed nvlist)
90 */
91#define SPA_CONFIG_BLOCKSIZE (1 << 14)
92
34dc7c2f
BB		 93/*
94 * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
95 * The ASIZE encoding should be at least 64 times larger (6 more bits)
96 * to support up to 4-way RAID-Z mirror mode with worst-case gang block
97 * overhead, three DVAs per bp, plus one more bit in case we do anything
98 * else that expands the ASIZE.
99 */
100#define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */
101#define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */
102#define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */
103
104/*
105 * All SPA data is represented by 128-bit data virtual addresses (DVAs).
106 * The members of the dva_t should be considered opaque outside the SPA.
107 */
108typedef struct dva {
109 uint64_t dva_word[2];
110} dva_t;
111
112/*
113 * Each block has a 256-bit checksum -- strong enough for cryptographic hashes.
114 */
115typedef struct zio_cksum {
116 uint64_t zc_word[4];
117} zio_cksum_t;
118
119/*
120 * Each block is described by its DVAs, time of birth, checksum, etc.
121 * The word-by-word, bit-by-bit layout of the blkptr is as follows:
122 *
123 * 64 56 48 40 32 24 16 8 0
124 * +-------+-------+-------+-------+-------+-------+-------+-------+
125 * 0 | vdev1 | GRID | ASIZE |
126 * +-------+-------+-------+-------+-------+-------+-------+-------+
127 * 1 |G| offset1 |
128 * +-------+-------+-------+-------+-------+-------+-------+-------+
129 * 2 | vdev2 | GRID | ASIZE |
130 * +-------+-------+-------+-------+-------+-------+-------+-------+
131 * 3 |G| offset2 |
132 * +-------+-------+-------+-------+-------+-------+-------+-------+
133 * 4 | vdev3 | GRID | ASIZE |
134 * +-------+-------+-------+-------+-------+-------+-------+-------+
135 * 5 |G| offset3 |
136 * +-------+-------+-------+-------+-------+-------+-------+-------+
137 * 6 |E| lvl | type | cksum | comp | PSIZE | LSIZE |
138 * +-------+-------+-------+-------+-------+-------+-------+-------+
139 * 7 | padding |
140 * +-------+-------+-------+-------+-------+-------+-------+-------+
141 * 8 | padding |
142 * +-------+-------+-------+-------+-------+-------+-------+-------+
143 * 9 | padding |
144 * +-------+-------+-------+-------+-------+-------+-------+-------+
145 * a | birth txg |
146 * +-------+-------+-------+-------+-------+-------+-------+-------+
147 * b | fill count |
148 * +-------+-------+-------+-------+-------+-------+-------+-------+
149 * c | checksum[0] |
150 * +-------+-------+-------+-------+-------+-------+-------+-------+
151 * d | checksum[1] |
152 * +-------+-------+-------+-------+-------+-------+-------+-------+
153 * e | checksum[2] |
154 * +-------+-------+-------+-------+-------+-------+-------+-------+
155 * f | checksum[3] |
156 * +-------+-------+-------+-------+-------+-------+-------+-------+
157 *
158 * Legend:
159 *
160 * vdev virtual device ID
161 * offset offset into virtual device
162 * LSIZE logical size
163 * PSIZE physical size (after compression)
164 * ASIZE allocated size (including RAID-Z parity and gang block headers)
165 * GRID RAID-Z layout information (reserved for future use)
166 * cksum checksum function
167 * comp compression function
168 * G gang block indicator
169 * E endianness
170 * type DMU object type
171 * lvl level of indirection
172 * birth txg transaction group in which the block was born
173 * fill count number of non-zero blocks under this bp
174 * checksum[4] 256-bit checksum of the data this bp describes
175 */
176typedef struct blkptr {
177 dva_t blk_dva[3]; /* 128-bit Data Virtual Address */
178 uint64_t blk_prop; /* size, compression, type, etc */
179 uint64_t blk_pad[3]; /* Extra space for the future */
180 uint64_t blk_birth; /* transaction group at birth */
181 uint64_t blk_fill; /* fill count */
182 zio_cksum_t blk_cksum; /* 256-bit checksum */
183} blkptr_t;
184
185#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
186#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
187
188/*
189 * Macros to get and set fields in a bp or DVA.
190 */
191#define DVA_GET_ASIZE(dva) \
192 BF64_GET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0)
193#define DVA_SET_ASIZE(dva, x) \
194 BF64_SET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0, x)
195
196#define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8)
197#define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x)
198
199#define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32)
200#define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x)
201
202#define DVA_GET_OFFSET(dva) \
203 BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0)
204#define DVA_SET_OFFSET(dva, x) \
205 BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x)
206
207#define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1)
208#define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
209
210#define BP_GET_LSIZE(bp) \
211 (BP_IS_HOLE(bp) ? 0 : \
212 BF64_GET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1))
213#define BP_SET_LSIZE(bp, x) \
214 BF64_SET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x)
215
216#define BP_GET_PSIZE(bp) \
217 BF64_GET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1)
218#define BP_SET_PSIZE(bp, x) \
219 BF64_SET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1, x)
220
221#define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 8)
222#define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 8, x)
223
224#define BP_GET_CHECKSUM(bp) BF64_GET((bp)->blk_prop, 40, 8)
225#define BP_SET_CHECKSUM(bp, x) BF64_SET((bp)->blk_prop, 40, 8, x)
226
227#define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
228#define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
229
230#define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
231#define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
232
233#define BP_GET_BYTEORDER(bp) (0 - BF64_GET((bp)->blk_prop, 63, 1))
234#define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
235
236#define BP_GET_ASIZE(bp) \
237 (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
238 DVA_GET_ASIZE(&(bp)->blk_dva[2]))
239
240#define BP_GET_UCSIZE(bp) \
241 ((BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ? \
242 BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp));
243
244#define BP_GET_NDVAS(bp) \
245 (!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
246 !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
247 !!DVA_GET_ASIZE(&(bp)->blk_dva[2]))
248
249#define BP_COUNT_GANG(bp) \
250 (DVA_GET_GANG(&(bp)->blk_dva[0]) + \
251 DVA_GET_GANG(&(bp)->blk_dva[1]) + \
252 DVA_GET_GANG(&(bp)->blk_dva[2]))
253
254#define DVA_EQUAL(dva1, dva2) \
255 ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
256 (dva1)->dva_word[0] == (dva2)->dva_word[0])
257
258#define ZIO_CHECKSUM_EQUAL(zc1, zc2) \
259 (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \
260 ((zc1).zc_word[1] - (zc2).zc_word[1]) | \
261 ((zc1).zc_word[2] - (zc2).zc_word[2]) | \
262 ((zc1).zc_word[3] - (zc2).zc_word[3])))
263
34dc7c2f
BB		 264#define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0)
265
266#define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \
267{ \
268 (zcp)->zc_word[0] = w0; \
269 (zcp)->zc_word[1] = w1; \
270 (zcp)->zc_word[2] = w2; \
271 (zcp)->zc_word[3] = w3; \
272}
273
274#define BP_IDENTITY(bp) (&(bp)->blk_dva[0])
275#define BP_IS_GANG(bp) DVA_GET_GANG(BP_IDENTITY(bp))
276#define BP_IS_HOLE(bp) ((bp)->blk_birth == 0)
277#define BP_IS_OLDER(bp, txg) (!BP_IS_HOLE(bp) && (bp)->blk_birth < (txg))
278
b128c09f 279#define BP_ZERO(bp) \
34dc7c2f
BB		 280{ \
281 (bp)->blk_dva[0].dva_word[0] = 0; \
282 (bp)->blk_dva[0].dva_word[1] = 0; \
283 (bp)->blk_dva[1].dva_word[0] = 0; \
284 (bp)->blk_dva[1].dva_word[1] = 0; \
285 (bp)->blk_dva[2].dva_word[0] = 0; \
286 (bp)->blk_dva[2].dva_word[1] = 0; \
34dc7c2f
BB		 287 (bp)->blk_prop = 0; \
288 (bp)->blk_pad[0] = 0; \
289 (bp)->blk_pad[1] = 0; \
290 (bp)->blk_pad[2] = 0; \
b128c09f 291 (bp)->blk_birth = 0; \
34dc7c2f
BB		 292 (bp)->blk_fill = 0; \
293 ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \
294}
295
b128c09f
BB		 296#define BLK_FILL_ALREADY_FREED (-1ULL)
297
34dc7c2f
BB		 298/*
299 * Note: the byteorder is either 0 or -1, both of which are palindromes.
300 * This simplifies the endianness handling a bit.
301 */
302#ifdef _BIG_ENDIAN
303#define ZFS_HOST_BYTEORDER (0ULL)
304#else
305#define ZFS_HOST_BYTEORDER (-1ULL)
306#endif
307
308#define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) != ZFS_HOST_BYTEORDER)
309
310#define BP_SPRINTF_LEN 320
311
312#include <sys/dmu.h>
313
314#define BP_GET_BUFC_TYPE(bp) \
315 (((BP_GET_LEVEL(bp) > 0) || (dmu_ot[BP_GET_TYPE(bp)].ot_metadata)) ? \
316 ARC_BUFC_METADATA : ARC_BUFC_DATA);
317/*
318 * Routines found in spa.c
319 */
320
321/* state manipulation functions */
322extern int spa_open(const char *pool, spa_t **, void *tag);
323extern int spa_get_stats(const char *pool, nvlist_t **config,
324 char *altroot, size_t buflen);
325extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props,
b128c09f
BB		 326 const char *history_str, nvlist_t *zplprops);
327extern int spa_check_rootconf(char *devpath, char *devid,
328 nvlist_t **bestconf, uint64_t *besttxg);
34dc7c2f 329extern boolean_t spa_rootdev_validate(nvlist_t *nv);
b128c09f 330extern int spa_import_rootpool(char *devpath, char *devid);
34dc7c2f 331extern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props);
b128c09f 332extern int spa_import_faulted(const char *, nvlist_t *, nvlist_t *);
34dc7c2f
BB		 333extern nvlist_t *spa_tryimport(nvlist_t *tryconfig);
334extern int spa_destroy(char *pool);
fb5f0bc8
BB		 335extern int spa_export(char *pool, nvlist_t **oldconfig, boolean_t force,
336 boolean_t hardforce);
34dc7c2f
BB		 337extern int spa_reset(char *pool);
338extern void spa_async_request(spa_t *spa, int flag);
b128c09f 339extern void spa_async_unrequest(spa_t *spa, int flag);
34dc7c2f
BB		 340extern void spa_async_suspend(spa_t *spa);
341extern void spa_async_resume(spa_t *spa);
342extern spa_t *spa_inject_addref(char *pool);
343extern void spa_inject_delref(spa_t *spa);
344
b128c09f
BB		 345#define SPA_ASYNC_CONFIG_UPDATE 0x01
346#define SPA_ASYNC_REMOVE 0x02
347#define SPA_ASYNC_PROBE 0x04
348#define SPA_ASYNC_RESILVER_DONE 0x08
349#define SPA_ASYNC_RESILVER 0x10
34dc7c2f
BB		 350
351/* device manipulation */
352extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot);
353extern int spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot,
354 int replacing);
fb5f0bc8
BB		 355extern int spa_vdev_detach(spa_t *spa, uint64_t guid, uint64_t pguid,
356 int replace_done);
34dc7c2f
BB		 357extern int spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare);
358extern int spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath);
359
360/* spare state (which is global across all pools) */
361extern void spa_spare_add(vdev_t *vd);
362extern void spa_spare_remove(vdev_t *vd);
b128c09f 363extern boolean_t spa_spare_exists(uint64_t guid, uint64_t *pool, int *refcnt);
34dc7c2f
BB		 364extern void spa_spare_activate(vdev_t *vd);
365
366/* L2ARC state (which is global across all pools) */
367extern void spa_l2cache_add(vdev_t *vd);
368extern void spa_l2cache_remove(vdev_t *vd);
369extern boolean_t spa_l2cache_exists(uint64_t guid, uint64_t *pool);
370extern void spa_l2cache_activate(vdev_t *vd);
371extern void spa_l2cache_drop(spa_t *spa);
372extern void spa_l2cache_space_update(vdev_t *vd, int64_t space, int64_t alloc);
373
374/* scrubbing */
b128c09f 375extern int spa_scrub(spa_t *spa, pool_scrub_type_t type);
34dc7c2f
BB		 376
377/* spa syncing */
378extern void spa_sync(spa_t *spa, uint64_t txg); /* only for DMU use */
379extern void spa_sync_allpools(void);
380
b128c09f
BB		 381/* spa namespace global mutex */
382extern kmutex_t spa_namespace_lock;
383
34dc7c2f
BB		 384/*
385 * SPA configuration functions in spa_config.c
386 */
387
388#define SPA_CONFIG_UPDATE_POOL 0
389#define SPA_CONFIG_UPDATE_VDEVS 1
390
b128c09f 391extern void spa_config_sync(spa_t *, boolean_t, boolean_t);
34dc7c2f
BB		 392extern void spa_config_load(void);
393extern nvlist_t *spa_all_configs(uint64_t *);
394extern void spa_config_set(spa_t *spa, nvlist_t *config);
395extern nvlist_t *spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg,
396 int getstats);
397extern void spa_config_update(spa_t *spa, int what);
398extern void spa_config_update_common(spa_t *spa, int what, boolean_t isroot);
399
400/*
401 * Miscellaneous SPA routines in spa_misc.c
402 */
403
404/* Namespace manipulation */
405extern spa_t *spa_lookup(const char *name);
406extern spa_t *spa_add(const char *name, const char *altroot);
407extern void spa_remove(spa_t *spa);
408extern spa_t *spa_next(spa_t *prev);
409
410/* Refcount functions */
411extern void spa_open_ref(spa_t *spa, void *tag);
412extern void spa_close(spa_t *spa, void *tag);
413extern boolean_t spa_refcount_zero(spa_t *spa);
414
b128c09f
BB		 415#define SCL_CONFIG 0x01
416#define SCL_STATE 0x02
417#define SCL_L2ARC 0x04 /* hack until L2ARC 2.0 */
418#define SCL_ALLOC 0x08
419#define SCL_ZIO 0x10
420#define SCL_FREE 0x20
421#define SCL_VDEV 0x40
422#define SCL_LOCKS 7
423#define SCL_ALL ((1 << SCL_LOCKS) - 1)
424#define SCL_STATE_ALL (SCL_STATE | SCL_L2ARC | SCL_ZIO)
425
426/* Pool configuration locks */
427extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw);
428extern void spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw);
429extern void spa_config_exit(spa_t *spa, int locks, void *tag);
430extern int spa_config_held(spa_t *spa, int locks, krw_t rw);
34dc7c2f
BB		 431
432/* Pool vdev add/remove lock */
433extern uint64_t spa_vdev_enter(spa_t *spa);
434extern int spa_vdev_exit(spa_t *spa, vdev_t *vd, uint64_t txg, int error);
435
b128c09f
BB		 436/* Pool vdev state change lock */
437extern void spa_vdev_state_enter(spa_t *spa);
438extern int spa_vdev_state_exit(spa_t *spa, vdev_t *vd, int error);
439
34dc7c2f 440/* Accessor functions */
b128c09f 441extern boolean_t spa_shutting_down(spa_t *spa);
34dc7c2f
BB		 442extern struct dsl_pool *spa_get_dsl(spa_t *spa);
443extern blkptr_t *spa_get_rootblkptr(spa_t *spa);
444extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp);
445extern void spa_altroot(spa_t *, char *, size_t);
446extern int spa_sync_pass(spa_t *spa);
447extern char *spa_name(spa_t *spa);
448extern uint64_t spa_guid(spa_t *spa);
449extern uint64_t spa_last_synced_txg(spa_t *spa);
450extern uint64_t spa_first_txg(spa_t *spa);
451extern uint64_t spa_version(spa_t *spa);
b128c09f 452extern pool_state_t spa_state(spa_t *spa);
34dc7c2f
BB		 453extern uint64_t spa_freeze_txg(spa_t *spa);
454extern uint64_t spa_get_alloc(spa_t *spa);
455extern uint64_t spa_get_space(spa_t *spa);
456extern uint64_t spa_get_dspace(spa_t *spa);
457extern uint64_t spa_get_asize(spa_t *spa, uint64_t lsize);
458extern uint64_t spa_version(spa_t *spa);
459extern int spa_max_replication(spa_t *spa);
460extern int spa_busy(void);
461extern uint8_t spa_get_failmode(spa_t *spa);
b128c09f 462extern boolean_t spa_suspended(spa_t *spa);
34dc7c2f
BB		 463
464/* Miscellaneous support routines */
465extern int spa_rename(const char *oldname, const char *newname);
466extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid);
467extern char *spa_strdup(const char *);
468extern void spa_strfree(char *);
469extern uint64_t spa_get_random(uint64_t range);
470extern void sprintf_blkptr(char *buf, int len, const blkptr_t *bp);
471extern void spa_freeze(spa_t *spa);
472extern void spa_upgrade(spa_t *spa, uint64_t version);
473extern void spa_evict_all(void);
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BB		 474extern vdev_t *spa_lookup_by_guid(spa_t *spa, uint64_t guid,
475 boolean_t l2cache);
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BB		 476extern boolean_t spa_has_spare(spa_t *, uint64_t guid);
477extern uint64_t bp_get_dasize(spa_t *spa, const blkptr_t *bp);
478extern boolean_t spa_has_slogs(spa_t *spa);
b128c09f 479extern boolean_t spa_is_root(spa_t *spa);
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BB		 480extern boolean_t spa_writeable(spa_t *spa);
481extern int spa_mode(spa_t *spa);
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BB		 482
483/* history logging */
484typedef enum history_log_type {
485 LOG_CMD_POOL_CREATE,
486 LOG_CMD_NORMAL,
487 LOG_INTERNAL
488} history_log_type_t;
489
490typedef struct history_arg {
491 const char *ha_history_str;
492 history_log_type_t ha_log_type;
493 history_internal_events_t ha_event;
494 char ha_zone[MAXPATHLEN];
495} history_arg_t;
496
497extern char *spa_his_ievent_table[];
498
499extern void spa_history_create_obj(spa_t *spa, dmu_tx_t *tx);
500extern int spa_history_get(spa_t *spa, uint64_t *offset, uint64_t *len_read,
501 char *his_buf);
502extern int spa_history_log(spa_t *spa, const char *his_buf,
503 history_log_type_t what);
504void spa_history_internal_log(history_internal_events_t event, spa_t *spa,
505 dmu_tx_t *tx, cred_t *cr, const char *fmt, ...);
506
507/* error handling */
508struct zbookmark;
509struct zio;
510extern void spa_log_error(spa_t *spa, struct zio *zio);
511extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
512 struct zio *zio, uint64_t stateoroffset, uint64_t length);
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BB		 513extern void zfs_post_remove(spa_t *spa, vdev_t *vd);
514extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd);
515extern uint64_t spa_get_errlog_size(spa_t *spa);
516extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count);
517extern void spa_errlog_rotate(spa_t *spa);
518extern void spa_errlog_drain(spa_t *spa);
519extern void spa_errlog_sync(spa_t *spa, uint64_t txg);
520extern void spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub);
521
522/* vdev cache */
523extern void vdev_cache_stat_init(void);
524extern void vdev_cache_stat_fini(void);
525
526/* Initialization and termination */
527extern void spa_init(int flags);
528extern void spa_fini(void);
529extern void spa_boot_init();
530
531/* properties */
532extern int spa_prop_set(spa_t *spa, nvlist_t *nvp);
533extern int spa_prop_get(spa_t *spa, nvlist_t **nvp);
534extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx);
d164b209 535extern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t);
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BB		 536
537/* asynchronous event notification */
538extern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name);
539
540#ifdef ZFS_DEBUG
541#define dprintf_bp(bp, fmt, ...) do { \
542 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
543 char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP); \
544 sprintf_blkptr(__blkbuf, BP_SPRINTF_LEN, (bp)); \
545 dprintf(fmt " %s\n", __VA_ARGS__, __blkbuf); \
546 kmem_free(__blkbuf, BP_SPRINTF_LEN); \
547 } \
548_NOTE(CONSTCOND) } while (0)
549#else
550#define dprintf_bp(bp, fmt, ...)
551#endif
552
fb5f0bc8 553extern int spa_mode_global; /* mode, e.g. FREAD | FWRITE */
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BB		 554
555#ifdef __cplusplus
556}
557#endif
558
559#endif /* _SYS_SPA_H */
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