1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6ea8dc4b6Seschrock * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21*c9431fa1Sahl 22fa9e4066Sahrens /* 23b3995adbSahrens * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24fa9e4066Sahrens * Use is subject to license terms. 25fa9e4066Sahrens */ 26fa9e4066Sahrens 27fa9e4066Sahrens #ifndef _ZIO_H 28fa9e4066Sahrens #define _ZIO_H 29fa9e4066Sahrens 30fa9e4066Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 31fa9e4066Sahrens 32fa9e4066Sahrens #include <sys/zfs_context.h> 33fa9e4066Sahrens #include <sys/spa.h> 34fa9e4066Sahrens #include <sys/txg.h> 35fa9e4066Sahrens #include <sys/avl.h> 36fa9e4066Sahrens #include <sys/dkio.h> 37fa9e4066Sahrens #include <sys/fs/zfs.h> 3844cd46caSbillm #include <sys/zio_impl.h> 39fa9e4066Sahrens 40fa9e4066Sahrens #ifdef __cplusplus 41fa9e4066Sahrens extern "C" { 42fa9e4066Sahrens #endif 43fa9e4066Sahrens 44fa9e4066Sahrens #define ZBT_MAGIC 0x210da7ab10c7a11ULL /* zio data bloc tail */ 45fa9e4066Sahrens 46fa9e4066Sahrens typedef struct zio_block_tail { 47fa9e4066Sahrens uint64_t zbt_magic; /* for validation, endianness */ 48fa9e4066Sahrens zio_cksum_t zbt_cksum; /* 256-bit checksum */ 49fa9e4066Sahrens } zio_block_tail_t; 50fa9e4066Sahrens 51fa9e4066Sahrens /* 52fa9e4066Sahrens * Gang block headers are self-checksumming and contain an array 53fa9e4066Sahrens * of block pointers. 54fa9e4066Sahrens */ 55fa9e4066Sahrens #define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE 56fa9e4066Sahrens #define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \ 57fa9e4066Sahrens sizeof (zio_block_tail_t)) / sizeof (blkptr_t)) 58fa9e4066Sahrens #define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \ 59fa9e4066Sahrens sizeof (zio_block_tail_t) - \ 60fa9e4066Sahrens (SPA_GBH_NBLKPTRS * sizeof (blkptr_t))) /\ 61fa9e4066Sahrens sizeof (uint64_t)) 62fa9e4066Sahrens 63fa9e4066Sahrens #define ZIO_GET_IOSIZE(zio) \ 6444cd46caSbillm (BP_IS_GANG((zio)->io_bp) ? \ 65fa9e4066Sahrens SPA_GANGBLOCKSIZE : BP_GET_PSIZE((zio)->io_bp)) 66fa9e4066Sahrens 67fa9e4066Sahrens typedef struct zio_gbh { 68fa9e4066Sahrens blkptr_t zg_blkptr[SPA_GBH_NBLKPTRS]; 69fa9e4066Sahrens uint64_t zg_filler[SPA_GBH_FILLER]; 70fa9e4066Sahrens zio_block_tail_t zg_tail; 71fa9e4066Sahrens } zio_gbh_phys_t; 72fa9e4066Sahrens 73fa9e4066Sahrens enum zio_checksum { 74fa9e4066Sahrens ZIO_CHECKSUM_INHERIT = 0, 75fa9e4066Sahrens ZIO_CHECKSUM_ON, 76fa9e4066Sahrens ZIO_CHECKSUM_OFF, 77fa9e4066Sahrens ZIO_CHECKSUM_LABEL, 78fa9e4066Sahrens ZIO_CHECKSUM_GANG_HEADER, 79fa9e4066Sahrens ZIO_CHECKSUM_ZILOG, 80fa9e4066Sahrens ZIO_CHECKSUM_FLETCHER_2, 81fa9e4066Sahrens ZIO_CHECKSUM_FLETCHER_4, 82fa9e4066Sahrens ZIO_CHECKSUM_SHA256, 83fa9e4066Sahrens ZIO_CHECKSUM_FUNCTIONS 84fa9e4066Sahrens }; 85fa9e4066Sahrens 86fa9e4066Sahrens #define ZIO_CHECKSUM_ON_VALUE ZIO_CHECKSUM_FLETCHER_2 87fa9e4066Sahrens #define ZIO_CHECKSUM_DEFAULT ZIO_CHECKSUM_ON 88fa9e4066Sahrens 89fa9e4066Sahrens enum zio_compress { 90fa9e4066Sahrens ZIO_COMPRESS_INHERIT = 0, 91fa9e4066Sahrens ZIO_COMPRESS_ON, 92fa9e4066Sahrens ZIO_COMPRESS_OFF, 93fa9e4066Sahrens ZIO_COMPRESS_LZJB, 94416e0cd8Sek ZIO_COMPRESS_EMPTY, 95*c9431fa1Sahl ZIO_COMPRESS_GZIP_1, 96*c9431fa1Sahl ZIO_COMPRESS_GZIP_2, 97*c9431fa1Sahl ZIO_COMPRESS_GZIP_3, 98*c9431fa1Sahl ZIO_COMPRESS_GZIP_4, 99*c9431fa1Sahl ZIO_COMPRESS_GZIP_5, 100*c9431fa1Sahl ZIO_COMPRESS_GZIP_6, 101*c9431fa1Sahl ZIO_COMPRESS_GZIP_7, 102*c9431fa1Sahl ZIO_COMPRESS_GZIP_8, 103*c9431fa1Sahl ZIO_COMPRESS_GZIP_9, 104fa9e4066Sahrens ZIO_COMPRESS_FUNCTIONS 105fa9e4066Sahrens }; 106fa9e4066Sahrens 107fa9e4066Sahrens #define ZIO_COMPRESS_ON_VALUE ZIO_COMPRESS_LZJB 108fa9e4066Sahrens #define ZIO_COMPRESS_DEFAULT ZIO_COMPRESS_OFF 109fa9e4066Sahrens 110fa9e4066Sahrens #define ZIO_PRIORITY_NOW (zio_priority_table[0]) 111fa9e4066Sahrens #define ZIO_PRIORITY_SYNC_READ (zio_priority_table[1]) 112fa9e4066Sahrens #define ZIO_PRIORITY_SYNC_WRITE (zio_priority_table[2]) 113fa9e4066Sahrens #define ZIO_PRIORITY_ASYNC_READ (zio_priority_table[3]) 114fa9e4066Sahrens #define ZIO_PRIORITY_ASYNC_WRITE (zio_priority_table[4]) 115fa9e4066Sahrens #define ZIO_PRIORITY_FREE (zio_priority_table[5]) 116fa9e4066Sahrens #define ZIO_PRIORITY_CACHE_FILL (zio_priority_table[6]) 117fa9e4066Sahrens #define ZIO_PRIORITY_LOG_WRITE (zio_priority_table[7]) 118fa9e4066Sahrens #define ZIO_PRIORITY_RESILVER (zio_priority_table[8]) 119fa9e4066Sahrens #define ZIO_PRIORITY_SCRUB (zio_priority_table[9]) 120fa9e4066Sahrens #define ZIO_PRIORITY_TABLE_SIZE 10 121fa9e4066Sahrens 122ea8dc4b6Seschrock #define ZIO_FLAG_MUSTSUCCEED 0x00000 123ea8dc4b6Seschrock #define ZIO_FLAG_CANFAIL 0x00001 124ea8dc4b6Seschrock #define ZIO_FLAG_FAILFAST 0x00002 125ea8dc4b6Seschrock #define ZIO_FLAG_CONFIG_HELD 0x00004 126b3995adbSahrens #define ZIO_FLAG_CONFIG_GRABBED 0x00008 127fa9e4066Sahrens 128ea8dc4b6Seschrock #define ZIO_FLAG_DONT_CACHE 0x00010 129ea8dc4b6Seschrock #define ZIO_FLAG_DONT_QUEUE 0x00020 130ea8dc4b6Seschrock #define ZIO_FLAG_DONT_PROPAGATE 0x00040 131ea8dc4b6Seschrock #define ZIO_FLAG_DONT_RETRY 0x00080 132fa9e4066Sahrens 133ea8dc4b6Seschrock #define ZIO_FLAG_PHYSICAL 0x00100 134ea8dc4b6Seschrock #define ZIO_FLAG_IO_BYPASS 0x00200 135ea8dc4b6Seschrock #define ZIO_FLAG_IO_REPAIR 0x00400 136ea8dc4b6Seschrock #define ZIO_FLAG_SPECULATIVE 0x00800 137fa9e4066Sahrens 138ea8dc4b6Seschrock #define ZIO_FLAG_RESILVER 0x01000 139ea8dc4b6Seschrock #define ZIO_FLAG_SCRUB 0x02000 140d80c45e0Sbonwick #define ZIO_FLAG_SCRUB_THREAD 0x04000 141d80c45e0Sbonwick #define ZIO_FLAG_SUBBLOCK 0x08000 142ea8dc4b6Seschrock 143ea8dc4b6Seschrock #define ZIO_FLAG_NOBOOKMARK 0x10000 144faafa6e3Sahrens #define ZIO_FLAG_USER 0x20000 145fa9e4066Sahrens 1469bc11082Sek #define ZIO_FLAG_METADATA 0x40000 1479bc11082Sek 148fa9e4066Sahrens #define ZIO_FLAG_GANG_INHERIT \ 149fa9e4066Sahrens (ZIO_FLAG_CANFAIL | \ 150fa9e4066Sahrens ZIO_FLAG_FAILFAST | \ 151fa9e4066Sahrens ZIO_FLAG_CONFIG_HELD | \ 152fa9e4066Sahrens ZIO_FLAG_DONT_RETRY | \ 153fa9e4066Sahrens ZIO_FLAG_IO_REPAIR | \ 154fa9e4066Sahrens ZIO_FLAG_SPECULATIVE | \ 155fa9e4066Sahrens ZIO_FLAG_RESILVER | \ 156d80c45e0Sbonwick ZIO_FLAG_SCRUB | \ 157d80c45e0Sbonwick ZIO_FLAG_SCRUB_THREAD) 158fa9e4066Sahrens 159fa9e4066Sahrens #define ZIO_FLAG_VDEV_INHERIT \ 160fa9e4066Sahrens (ZIO_FLAG_GANG_INHERIT | \ 161fa9e4066Sahrens ZIO_FLAG_DONT_CACHE | \ 162fa9e4066Sahrens ZIO_FLAG_PHYSICAL) 163fa9e4066Sahrens 164fa9e4066Sahrens /* 165fa9e4066Sahrens * We'll take the unused errno 'EBADE' (from the Convergent graveyard) 166fa9e4066Sahrens * to indicate checksum errors. 167fa9e4066Sahrens */ 168fa9e4066Sahrens #define ECKSUM EBADE 169fa9e4066Sahrens 170fa9e4066Sahrens typedef struct zio zio_t; 171fa9e4066Sahrens typedef void zio_done_func_t(zio_t *zio); 172fa9e4066Sahrens 173fa9e4066Sahrens extern uint8_t zio_priority_table[ZIO_PRIORITY_TABLE_SIZE]; 174fa9e4066Sahrens extern char *zio_type_name[ZIO_TYPES]; 175fa9e4066Sahrens 176ea8dc4b6Seschrock /* 177ea8dc4b6Seschrock * A bookmark is a four-tuple <objset, object, level, blkid> that uniquely 178ea8dc4b6Seschrock * identifies any block in the pool. By convention, the meta-objset (MOS) 179ea8dc4b6Seschrock * is objset 0, the meta-dnode is object 0, the root block (osphys_t) is 180ea8dc4b6Seschrock * level -1 of the meta-dnode, and intent log blocks (which are chained 181ea8dc4b6Seschrock * off the root block) have blkid == sequence number. In summary: 182ea8dc4b6Seschrock * 183ea8dc4b6Seschrock * mos is objset 0 184ea8dc4b6Seschrock * meta-dnode is object 0 185ea8dc4b6Seschrock * root block is <objset, 0, -1, 0> 186ea8dc4b6Seschrock * intent log is <objset, 0, -1, ZIL sequence number> 187ea8dc4b6Seschrock * 188ea8dc4b6Seschrock * Note: this structure is called a bookmark because its first purpose was 189ea8dc4b6Seschrock * to remember where to resume a pool-wide traverse. The absolute ordering 190ea8dc4b6Seschrock * for block visitation during traversal is defined in compare_bookmark(). 191ea8dc4b6Seschrock * 192ea8dc4b6Seschrock * Note: this structure is passed between userland and the kernel. 193ea8dc4b6Seschrock * Therefore it must not change size or alignment between 32/64 bit 194ea8dc4b6Seschrock * compilation options. 195ea8dc4b6Seschrock */ 196ea8dc4b6Seschrock typedef struct zbookmark { 197ea8dc4b6Seschrock uint64_t zb_objset; 198ea8dc4b6Seschrock uint64_t zb_object; 199ea8dc4b6Seschrock int64_t zb_level; 200ea8dc4b6Seschrock uint64_t zb_blkid; 201ea8dc4b6Seschrock } zbookmark_t; 202ea8dc4b6Seschrock 203fa9e4066Sahrens struct zio { 204fa9e4066Sahrens /* Core information about this I/O */ 205fa9e4066Sahrens zio_t *io_parent; 206fa9e4066Sahrens zio_t *io_root; 207fa9e4066Sahrens spa_t *io_spa; 208ea8dc4b6Seschrock zbookmark_t io_bookmark; 20944cd46caSbillm enum zio_checksum io_checksum; 21044cd46caSbillm enum zio_compress io_compress; 21144cd46caSbillm int io_ndvas; 212fa9e4066Sahrens uint64_t io_txg; 213fa9e4066Sahrens blkptr_t *io_bp; 214fa9e4066Sahrens blkptr_t io_bp_copy; 215fa9e4066Sahrens zio_t *io_child; 216fa9e4066Sahrens zio_t *io_sibling_prev; 217fa9e4066Sahrens zio_t *io_sibling_next; 218fa9e4066Sahrens zio_transform_t *io_transform_stack; 219ea8dc4b6Seschrock zio_t *io_logical; 220fa9e4066Sahrens 221fa9e4066Sahrens /* Callback info */ 222c717a561Smaybee zio_done_func_t *io_ready; 223fa9e4066Sahrens zio_done_func_t *io_done; 224fa9e4066Sahrens void *io_private; 225fa9e4066Sahrens blkptr_t io_bp_orig; 226fa9e4066Sahrens 227fa9e4066Sahrens /* Data represented by this I/O */ 228fa9e4066Sahrens void *io_data; 229fa9e4066Sahrens uint64_t io_size; 230fa9e4066Sahrens 231fa9e4066Sahrens /* Stuff for the vdev stack */ 232fa9e4066Sahrens vdev_t *io_vd; 233fa9e4066Sahrens void *io_vsd; 234fa9e4066Sahrens uint64_t io_offset; 235fa9e4066Sahrens uint64_t io_deadline; 236fa9e4066Sahrens uint64_t io_timestamp; 237fa9e4066Sahrens avl_node_t io_offset_node; 238fa9e4066Sahrens avl_node_t io_deadline_node; 239fa9e4066Sahrens avl_tree_t *io_vdev_tree; 240fa9e4066Sahrens zio_t *io_delegate_list; 241fa9e4066Sahrens zio_t *io_delegate_next; 242fa9e4066Sahrens 243fa9e4066Sahrens /* Internal pipeline state */ 244fa9e4066Sahrens int io_flags; 24544cd46caSbillm enum zio_type io_type; 24644cd46caSbillm enum zio_stage io_stage; 247fa9e4066Sahrens uint8_t io_stalled; 248fa9e4066Sahrens uint8_t io_priority; 249fa9e4066Sahrens struct dk_callback io_dk_callback; 250fa9e4066Sahrens int io_cmd; 251fa9e4066Sahrens int io_retries; 252fa9e4066Sahrens int io_error; 253fa9e4066Sahrens uint32_t io_numerrors; 254fa9e4066Sahrens uint32_t io_pipeline; 255fa9e4066Sahrens uint32_t io_async_stages; 256fa9e4066Sahrens uint64_t io_children_notready; 257fa9e4066Sahrens uint64_t io_children_notdone; 258fa9e4066Sahrens void *io_waiter; 259fa9e4066Sahrens kmutex_t io_lock; 260fa9e4066Sahrens kcondvar_t io_cv; 261ea8dc4b6Seschrock 262ea8dc4b6Seschrock /* FMA state */ 263ea8dc4b6Seschrock uint64_t io_ena; 264fa9e4066Sahrens }; 265fa9e4066Sahrens 266fa9e4066Sahrens extern zio_t *zio_null(zio_t *pio, spa_t *spa, 267fa9e4066Sahrens zio_done_func_t *done, void *private, int flags); 268fa9e4066Sahrens 269fa9e4066Sahrens extern zio_t *zio_root(spa_t *spa, 270fa9e4066Sahrens zio_done_func_t *done, void *private, int flags); 271fa9e4066Sahrens 272fa9e4066Sahrens extern zio_t *zio_read(zio_t *pio, spa_t *spa, blkptr_t *bp, void *data, 273fa9e4066Sahrens uint64_t size, zio_done_func_t *done, void *private, 274ea8dc4b6Seschrock int priority, int flags, zbookmark_t *zb); 275fa9e4066Sahrens 276fa9e4066Sahrens extern zio_t *zio_write(zio_t *pio, spa_t *spa, int checksum, int compress, 27744cd46caSbillm int ncopies, uint64_t txg, blkptr_t *bp, void *data, uint64_t size, 278c717a561Smaybee zio_done_func_t *ready, zio_done_func_t *done, void *private, int priority, 279c717a561Smaybee int flags, zbookmark_t *zb); 280fa9e4066Sahrens 281fa9e4066Sahrens extern zio_t *zio_rewrite(zio_t *pio, spa_t *spa, int checksum, 282fa9e4066Sahrens uint64_t txg, blkptr_t *bp, void *data, uint64_t size, 283ea8dc4b6Seschrock zio_done_func_t *done, void *private, int priority, int flags, 284ea8dc4b6Seschrock zbookmark_t *zb); 285fa9e4066Sahrens 286fa9e4066Sahrens extern zio_t *zio_free(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, 287fa9e4066Sahrens zio_done_func_t *done, void *private); 288fa9e4066Sahrens 289fa9e4066Sahrens extern zio_t *zio_claim(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, 290fa9e4066Sahrens zio_done_func_t *done, void *private); 291fa9e4066Sahrens 292fa9e4066Sahrens extern zio_t *zio_ioctl(zio_t *pio, spa_t *spa, vdev_t *vd, int cmd, 293fa9e4066Sahrens zio_done_func_t *done, void *private, int priority, int flags); 294fa9e4066Sahrens 295fa9e4066Sahrens extern zio_t *zio_read_phys(zio_t *pio, vdev_t *vd, uint64_t offset, 296fa9e4066Sahrens uint64_t size, void *data, int checksum, 297fa9e4066Sahrens zio_done_func_t *done, void *private, int priority, int flags); 298fa9e4066Sahrens 299fa9e4066Sahrens extern zio_t *zio_write_phys(zio_t *pio, vdev_t *vd, uint64_t offset, 300fa9e4066Sahrens uint64_t size, void *data, int checksum, 301fa9e4066Sahrens zio_done_func_t *done, void *private, int priority, int flags); 302fa9e4066Sahrens 30367bd71c6Sperrin extern int zio_alloc_blk(spa_t *spa, uint64_t size, blkptr_t *new_bp, 30467bd71c6Sperrin blkptr_t *old_bp, uint64_t txg); 305fa9e4066Sahrens extern void zio_free_blk(spa_t *spa, blkptr_t *bp, uint64_t txg); 306fa9e4066Sahrens 307fa9e4066Sahrens extern int zio_wait(zio_t *zio); 308fa9e4066Sahrens extern void zio_nowait(zio_t *zio); 309fa9e4066Sahrens 310fa9e4066Sahrens extern void *zio_buf_alloc(size_t size); 311fa9e4066Sahrens extern void zio_buf_free(void *buf, size_t size); 312ad23a2dbSjohansen extern void *zio_data_buf_alloc(size_t size); 313ad23a2dbSjohansen extern void zio_data_buf_free(void *buf, size_t size); 314fa9e4066Sahrens 315fa9e4066Sahrens /* 316fa9e4066Sahrens * Move an I/O to the next stage of the pipeline and execute that stage. 317fa9e4066Sahrens * There's no locking on io_stage because there's no legitimate way for 318fa9e4066Sahrens * multiple threads to be attempting to process the same I/O. 319fa9e4066Sahrens */ 320fa9e4066Sahrens extern void zio_next_stage(zio_t *zio); 321fa9e4066Sahrens extern void zio_next_stage_async(zio_t *zio); 322fa9e4066Sahrens extern void zio_wait_children_done(zio_t *zio); 323fa9e4066Sahrens 324fa9e4066Sahrens /* 325fa9e4066Sahrens * Delegate I/O to a child vdev. 326fa9e4066Sahrens */ 327fa9e4066Sahrens extern zio_t *zio_vdev_child_io(zio_t *zio, blkptr_t *bp, vdev_t *vd, 328fa9e4066Sahrens uint64_t offset, void *data, uint64_t size, int type, int priority, 329fa9e4066Sahrens int flags, zio_done_func_t *done, void *private); 330fa9e4066Sahrens 331fa9e4066Sahrens extern void zio_vdev_io_bypass(zio_t *zio); 332fa9e4066Sahrens extern void zio_vdev_io_reissue(zio_t *zio); 333fa9e4066Sahrens extern void zio_vdev_io_redone(zio_t *zio); 334fa9e4066Sahrens 335fa9e4066Sahrens extern void zio_checksum_verified(zio_t *zio); 336fa9e4066Sahrens extern void zio_set_gang_verifier(zio_t *zio, zio_cksum_t *zcp); 337fa9e4066Sahrens 338fa9e4066Sahrens extern uint8_t zio_checksum_select(uint8_t child, uint8_t parent); 339fa9e4066Sahrens extern uint8_t zio_compress_select(uint8_t child, uint8_t parent); 340fa9e4066Sahrens 341ea8dc4b6Seschrock boolean_t zio_should_retry(zio_t *zio); 342ea8dc4b6Seschrock 343fa9e4066Sahrens /* 344fa9e4066Sahrens * Initial setup and teardown. 345fa9e4066Sahrens */ 346fa9e4066Sahrens extern void zio_init(void); 347fa9e4066Sahrens extern void zio_fini(void); 348fa9e4066Sahrens 349ea8dc4b6Seschrock /* 350ea8dc4b6Seschrock * Fault injection 351ea8dc4b6Seschrock */ 352ea8dc4b6Seschrock struct zinject_record; 353ea8dc4b6Seschrock extern uint32_t zio_injection_enabled; 354ea8dc4b6Seschrock extern int zio_inject_fault(char *name, int flags, int *id, 355ea8dc4b6Seschrock struct zinject_record *record); 356ea8dc4b6Seschrock extern int zio_inject_list_next(int *id, char *name, size_t buflen, 357ea8dc4b6Seschrock struct zinject_record *record); 358ea8dc4b6Seschrock extern int zio_clear_fault(int id); 359ea8dc4b6Seschrock extern int zio_handle_fault_injection(zio_t *zio, int error); 360ea8dc4b6Seschrock extern int zio_handle_device_injection(vdev_t *vd, int error); 361ea8dc4b6Seschrock 362fa9e4066Sahrens #ifdef __cplusplus 363fa9e4066Sahrens } 364fa9e4066Sahrens #endif 365fa9e4066Sahrens 366fa9e4066Sahrens #endif /* _ZIO_H */ 367