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 */ 21c9431fa1Sahl 22fa9e4066Sahrens /* 23c7cd2421SGeorge Wilson * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 245aeb9474SGarrett D'Amore * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 258df0bcf0SPaul Dagnelie * Copyright (c) 2012, 2016 by Delphix. All rights reserved. 26a6f561b4SSašo Kiselkov * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 27810e43b2SBill Pijewski * Copyright (c) 2013, Joyent, Inc. All rights reserved. 28*c8811bd3SToomas Soome * Copyright 2016 Toomas Soome <tsoome@me.com> 295aeb9474SGarrett D'Amore */ 30fa9e4066Sahrens 31fa9e4066Sahrens #ifndef _ZIO_H 32fa9e4066Sahrens #define _ZIO_H 33fa9e4066Sahrens 34a2cdcdd2SPaul Dagnelie #include <sys/zio_priority.h> 35fa9e4066Sahrens #include <sys/zfs_context.h> 36fa9e4066Sahrens #include <sys/spa.h> 37fa9e4066Sahrens #include <sys/txg.h> 38fa9e4066Sahrens #include <sys/avl.h> 39fa9e4066Sahrens #include <sys/fs/zfs.h> 4044cd46caSbillm #include <sys/zio_impl.h> 41fa9e4066Sahrens 42fa9e4066Sahrens #ifdef __cplusplus 43fa9e4066Sahrens extern "C" { 44fa9e4066Sahrens #endif 45fa9e4066Sahrens 466e1f5caaSNeil Perrin /* 476e1f5caaSNeil Perrin * Embedded checksum 486e1f5caaSNeil Perrin */ 496e1f5caaSNeil Perrin #define ZEC_MAGIC 0x210da7ab10c7a11ULL 50fa9e4066Sahrens 516e1f5caaSNeil Perrin typedef struct zio_eck { 526e1f5caaSNeil Perrin uint64_t zec_magic; /* for validation, endianness */ 536e1f5caaSNeil Perrin zio_cksum_t zec_cksum; /* 256-bit checksum */ 546e1f5caaSNeil Perrin } zio_eck_t; 55fa9e4066Sahrens 56fa9e4066Sahrens /* 57fa9e4066Sahrens * Gang block headers are self-checksumming and contain an array 58fa9e4066Sahrens * of block pointers. 59fa9e4066Sahrens */ 60fa9e4066Sahrens #define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE 61fa9e4066Sahrens #define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \ 626e1f5caaSNeil Perrin sizeof (zio_eck_t)) / sizeof (blkptr_t)) 63fa9e4066Sahrens #define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \ 646e1f5caaSNeil Perrin sizeof (zio_eck_t) - \ 65fa9e4066Sahrens (SPA_GBH_NBLKPTRS * sizeof (blkptr_t))) /\ 66fa9e4066Sahrens sizeof (uint64_t)) 67fa9e4066Sahrens 68fa9e4066Sahrens typedef struct zio_gbh { 69fa9e4066Sahrens blkptr_t zg_blkptr[SPA_GBH_NBLKPTRS]; 70fa9e4066Sahrens uint64_t zg_filler[SPA_GBH_FILLER]; 716e1f5caaSNeil Perrin zio_eck_t zg_tail; 72fa9e4066Sahrens } zio_gbh_phys_t; 73fa9e4066Sahrens 74fa9e4066Sahrens enum zio_checksum { 75fa9e4066Sahrens ZIO_CHECKSUM_INHERIT = 0, 76fa9e4066Sahrens ZIO_CHECKSUM_ON, 77fa9e4066Sahrens ZIO_CHECKSUM_OFF, 78fa9e4066Sahrens ZIO_CHECKSUM_LABEL, 79fa9e4066Sahrens ZIO_CHECKSUM_GANG_HEADER, 80fa9e4066Sahrens ZIO_CHECKSUM_ZILOG, 81fa9e4066Sahrens ZIO_CHECKSUM_FLETCHER_2, 82fa9e4066Sahrens ZIO_CHECKSUM_FLETCHER_4, 83fa9e4066Sahrens ZIO_CHECKSUM_SHA256, 846e1f5caaSNeil Perrin ZIO_CHECKSUM_ZILOG2, 85810e43b2SBill Pijewski ZIO_CHECKSUM_NOPARITY, 8645818ee1SMatthew Ahrens ZIO_CHECKSUM_SHA512, 8745818ee1SMatthew Ahrens ZIO_CHECKSUM_SKEIN, 8845818ee1SMatthew Ahrens ZIO_CHECKSUM_EDONR, 89fa9e4066Sahrens ZIO_CHECKSUM_FUNCTIONS 90fa9e4066Sahrens }; 91fa9e4066Sahrens 925d7b4d43SMatthew Ahrens /* 935d7b4d43SMatthew Ahrens * The number of "legacy" compression functions which can be set on individual 945d7b4d43SMatthew Ahrens * objects. 955d7b4d43SMatthew Ahrens */ 965d7b4d43SMatthew Ahrens #define ZIO_CHECKSUM_LEGACY_FUNCTIONS ZIO_CHECKSUM_ZILOG2 975d7b4d43SMatthew Ahrens 987e322df5SJonathan Adams #define ZIO_CHECKSUM_ON_VALUE ZIO_CHECKSUM_FLETCHER_4 99fa9e4066Sahrens #define ZIO_CHECKSUM_DEFAULT ZIO_CHECKSUM_ON 100fa9e4066Sahrens 101b24ab676SJeff Bonwick #define ZIO_CHECKSUM_MASK 0xffULL 102b24ab676SJeff Bonwick #define ZIO_CHECKSUM_VERIFY (1 << 8) 103b24ab676SJeff Bonwick 104b24ab676SJeff Bonwick #define ZIO_DEDUPCHECKSUM ZIO_CHECKSUM_SHA256 105b24ab676SJeff Bonwick #define ZIO_DEDUPDITTO_MIN 100 106b24ab676SJeff Bonwick 107fa9e4066Sahrens enum zio_compress { 108fa9e4066Sahrens ZIO_COMPRESS_INHERIT = 0, 109fa9e4066Sahrens ZIO_COMPRESS_ON, 110fa9e4066Sahrens ZIO_COMPRESS_OFF, 111fa9e4066Sahrens ZIO_COMPRESS_LZJB, 112416e0cd8Sek ZIO_COMPRESS_EMPTY, 113c9431fa1Sahl ZIO_COMPRESS_GZIP_1, 114c9431fa1Sahl ZIO_COMPRESS_GZIP_2, 115c9431fa1Sahl ZIO_COMPRESS_GZIP_3, 116c9431fa1Sahl ZIO_COMPRESS_GZIP_4, 117c9431fa1Sahl ZIO_COMPRESS_GZIP_5, 118c9431fa1Sahl ZIO_COMPRESS_GZIP_6, 119c9431fa1Sahl ZIO_COMPRESS_GZIP_7, 120c9431fa1Sahl ZIO_COMPRESS_GZIP_8, 121c9431fa1Sahl ZIO_COMPRESS_GZIP_9, 122b24ab676SJeff Bonwick ZIO_COMPRESS_ZLE, 123a6f561b4SSašo Kiselkov ZIO_COMPRESS_LZ4, 124fa9e4066Sahrens ZIO_COMPRESS_FUNCTIONS 125fa9e4066Sahrens }; 126fa9e4066Sahrens 1275d7b4d43SMatthew Ahrens /* 1285d7b4d43SMatthew Ahrens * The number of "legacy" compression functions which can be set on individual 1295d7b4d43SMatthew Ahrens * objects. 1305d7b4d43SMatthew Ahrens */ 1315d7b4d43SMatthew Ahrens #define ZIO_COMPRESS_LEGACY_FUNCTIONS ZIO_COMPRESS_LZ4 1325d7b4d43SMatthew Ahrens 133db1741f5SJustin T. Gibbs /* 134db1741f5SJustin T. Gibbs * The meaning of "compress = on" selected by the compression features enabled 135db1741f5SJustin T. Gibbs * on a given pool. 136db1741f5SJustin T. Gibbs */ 137db1741f5SJustin T. Gibbs #define ZIO_COMPRESS_LEGACY_ON_VALUE ZIO_COMPRESS_LZJB 138db1741f5SJustin T. Gibbs #define ZIO_COMPRESS_LZ4_ON_VALUE ZIO_COMPRESS_LZ4 139db1741f5SJustin T. Gibbs 140db1741f5SJustin T. Gibbs #define ZIO_COMPRESS_DEFAULT ZIO_COMPRESS_OFF 141fa9e4066Sahrens 142b24ab676SJeff Bonwick #define BOOTFS_COMPRESS_VALID(compress) \ 143b24ab676SJeff Bonwick ((compress) == ZIO_COMPRESS_LZJB || \ 144a6f561b4SSašo Kiselkov (compress) == ZIO_COMPRESS_LZ4 || \ 145*c8811bd3SToomas Soome (compress) == ZIO_COMPRESS_GZIP_1 || \ 146*c8811bd3SToomas Soome (compress) == ZIO_COMPRESS_GZIP_2 || \ 147*c8811bd3SToomas Soome (compress) == ZIO_COMPRESS_GZIP_3 || \ 148*c8811bd3SToomas Soome (compress) == ZIO_COMPRESS_GZIP_4 || \ 149*c8811bd3SToomas Soome (compress) == ZIO_COMPRESS_GZIP_5 || \ 150*c8811bd3SToomas Soome (compress) == ZIO_COMPRESS_GZIP_6 || \ 151*c8811bd3SToomas Soome (compress) == ZIO_COMPRESS_GZIP_7 || \ 152*c8811bd3SToomas Soome (compress) == ZIO_COMPRESS_GZIP_8 || \ 153*c8811bd3SToomas Soome (compress) == ZIO_COMPRESS_GZIP_9 || \ 154db1741f5SJustin T. Gibbs (compress) == ZIO_COMPRESS_ON || \ 155b24ab676SJeff Bonwick (compress) == ZIO_COMPRESS_OFF) 156b24ab676SJeff Bonwick 1570a4e9518Sgw #define ZIO_FAILURE_MODE_WAIT 0 1580a4e9518Sgw #define ZIO_FAILURE_MODE_CONTINUE 1 1590a4e9518Sgw #define ZIO_FAILURE_MODE_PANIC 2 1600a4e9518Sgw 161b24ab676SJeff Bonwick enum zio_flag { 162b24ab676SJeff Bonwick /* 163b24ab676SJeff Bonwick * Flags inherited by gang, ddt, and vdev children, 164b24ab676SJeff Bonwick * and that must be equal for two zios to aggregate 165b24ab676SJeff Bonwick */ 166b24ab676SJeff Bonwick ZIO_FLAG_DONT_AGGREGATE = 1 << 0, 167b24ab676SJeff Bonwick ZIO_FLAG_IO_REPAIR = 1 << 1, 168b24ab676SJeff Bonwick ZIO_FLAG_SELF_HEAL = 1 << 2, 169b24ab676SJeff Bonwick ZIO_FLAG_RESILVER = 1 << 3, 170b24ab676SJeff Bonwick ZIO_FLAG_SCRUB = 1 << 4, 17144ecc532SGeorge Wilson ZIO_FLAG_SCAN_THREAD = 1 << 5, 1722a104a52SAlex Reece ZIO_FLAG_PHYSICAL = 1 << 6, 173b24ab676SJeff Bonwick 174b24ab676SJeff Bonwick #define ZIO_FLAG_AGG_INHERIT (ZIO_FLAG_CANFAIL - 1) 175b24ab676SJeff Bonwick 176b24ab676SJeff Bonwick /* 177b24ab676SJeff Bonwick * Flags inherited by ddt, gang, and vdev children. 178b24ab676SJeff Bonwick */ 1792a104a52SAlex Reece ZIO_FLAG_CANFAIL = 1 << 7, /* must be first for INHERIT */ 1802a104a52SAlex Reece ZIO_FLAG_SPECULATIVE = 1 << 8, 1812a104a52SAlex Reece ZIO_FLAG_CONFIG_WRITER = 1 << 9, 1822a104a52SAlex Reece ZIO_FLAG_DONT_RETRY = 1 << 10, 1832a104a52SAlex Reece ZIO_FLAG_DONT_CACHE = 1 << 11, 1842a104a52SAlex Reece ZIO_FLAG_NODATA = 1 << 12, 1852a104a52SAlex Reece ZIO_FLAG_INDUCE_DAMAGE = 1 << 13, 1860f7643c7SGeorge Wilson ZIO_FLAG_IO_ALLOCATING = 1 << 14, 187b24ab676SJeff Bonwick 188b24ab676SJeff Bonwick #define ZIO_FLAG_DDT_INHERIT (ZIO_FLAG_IO_RETRY - 1) 189b24ab676SJeff Bonwick #define ZIO_FLAG_GANG_INHERIT (ZIO_FLAG_IO_RETRY - 1) 190b24ab676SJeff Bonwick 191b24ab676SJeff Bonwick /* 192b24ab676SJeff Bonwick * Flags inherited by vdev children. 193b24ab676SJeff Bonwick */ 1940f7643c7SGeorge Wilson ZIO_FLAG_IO_RETRY = 1 << 15, /* must be first for INHERIT */ 1950f7643c7SGeorge Wilson ZIO_FLAG_PROBE = 1 << 16, 1960f7643c7SGeorge Wilson ZIO_FLAG_TRYHARD = 1 << 17, 1970f7643c7SGeorge Wilson ZIO_FLAG_OPTIONAL = 1 << 18, 198b24ab676SJeff Bonwick 199b24ab676SJeff Bonwick #define ZIO_FLAG_VDEV_INHERIT (ZIO_FLAG_DONT_QUEUE - 1) 200b24ab676SJeff Bonwick 201b24ab676SJeff Bonwick /* 202b24ab676SJeff Bonwick * Flags not inherited by any children. 203b24ab676SJeff Bonwick */ 2040f7643c7SGeorge Wilson ZIO_FLAG_DONT_QUEUE = 1 << 19, /* must be first for INHERIT */ 2050f7643c7SGeorge Wilson ZIO_FLAG_DONT_PROPAGATE = 1 << 20, 2060f7643c7SGeorge Wilson ZIO_FLAG_IO_BYPASS = 1 << 21, 2070f7643c7SGeorge Wilson ZIO_FLAG_IO_REWRITE = 1 << 22, 2080f7643c7SGeorge Wilson ZIO_FLAG_RAW = 1 << 23, 2090f7643c7SGeorge Wilson ZIO_FLAG_GANG_CHILD = 1 << 24, 2100f7643c7SGeorge Wilson ZIO_FLAG_DDT_CHILD = 1 << 25, 2110f7643c7SGeorge Wilson ZIO_FLAG_GODFATHER = 1 << 26, 2120f7643c7SGeorge Wilson ZIO_FLAG_NOPWRITE = 1 << 27, 2130f7643c7SGeorge Wilson ZIO_FLAG_REEXECUTED = 1 << 28, 2140f7643c7SGeorge Wilson ZIO_FLAG_DELEGATED = 1 << 29, 215b24ab676SJeff Bonwick }; 216b24ab676SJeff Bonwick 217b24ab676SJeff Bonwick #define ZIO_FLAG_MUSTSUCCEED 0 218b24ab676SJeff Bonwick 219b24ab676SJeff Bonwick #define ZIO_DDT_CHILD_FLAGS(zio) \ 220b24ab676SJeff Bonwick (((zio)->io_flags & ZIO_FLAG_DDT_INHERIT) | \ 221b24ab676SJeff Bonwick ZIO_FLAG_DDT_CHILD | ZIO_FLAG_CANFAIL) 222b24ab676SJeff Bonwick 223e14bb325SJeff Bonwick #define ZIO_GANG_CHILD_FLAGS(zio) \ 224e14bb325SJeff Bonwick (((zio)->io_flags & ZIO_FLAG_GANG_INHERIT) | \ 225e14bb325SJeff Bonwick ZIO_FLAG_GANG_CHILD | ZIO_FLAG_CANFAIL) 226e14bb325SJeff Bonwick 227b24ab676SJeff Bonwick #define ZIO_VDEV_CHILD_FLAGS(zio) \ 228b24ab676SJeff Bonwick (((zio)->io_flags & ZIO_FLAG_VDEV_INHERIT) | \ 229b24ab676SJeff Bonwick ZIO_FLAG_CANFAIL) 230b24ab676SJeff Bonwick 231e14bb325SJeff Bonwick enum zio_child { 232e14bb325SJeff Bonwick ZIO_CHILD_VDEV = 0, 233e14bb325SJeff Bonwick ZIO_CHILD_GANG, 234b24ab676SJeff Bonwick ZIO_CHILD_DDT, 235e14bb325SJeff Bonwick ZIO_CHILD_LOGICAL, 236e14bb325SJeff Bonwick ZIO_CHILD_TYPES 237e14bb325SJeff Bonwick }; 238e14bb325SJeff Bonwick 239e14bb325SJeff Bonwick enum zio_wait_type { 240e14bb325SJeff Bonwick ZIO_WAIT_READY = 0, 241e14bb325SJeff Bonwick ZIO_WAIT_DONE, 242e14bb325SJeff Bonwick ZIO_WAIT_TYPES 243e14bb325SJeff Bonwick }; 244e14bb325SJeff Bonwick 245fa9e4066Sahrens /* 246e7cbe64fSgw * We'll take the unused errnos, 'EBADE' and 'EBADR' (from the Convergent 247e7cbe64fSgw * graveyard) to indicate checksum errors and fragmentation. 248fa9e4066Sahrens */ 249fa9e4066Sahrens #define ECKSUM EBADE 250e7cbe64fSgw #define EFRAGS EBADR 251fa9e4066Sahrens 252fa9e4066Sahrens typedef void zio_done_func_t(zio_t *zio); 253fa9e4066Sahrens 2540f7643c7SGeorge Wilson extern boolean_t zio_dva_throttle_enabled; 25569962b56SMatthew Ahrens extern const char *zio_type_name[ZIO_TYPES]; 256fa9e4066Sahrens 257ea8dc4b6Seschrock /* 258ea8dc4b6Seschrock * A bookmark is a four-tuple <objset, object, level, blkid> that uniquely 259ea8dc4b6Seschrock * identifies any block in the pool. By convention, the meta-objset (MOS) 260b24ab676SJeff Bonwick * is objset 0, and the meta-dnode is object 0. This covers all blocks 261b24ab676SJeff Bonwick * except root blocks and ZIL blocks, which are defined as follows: 262ea8dc4b6Seschrock * 263b24ab676SJeff Bonwick * Root blocks (objset_phys_t) are object 0, level -1: <objset, 0, -1, 0>. 264b24ab676SJeff Bonwick * ZIL blocks are bookmarked <objset, 0, -2, blkid == ZIL sequence number>. 265b24ab676SJeff Bonwick * dmu_sync()ed ZIL data blocks are bookmarked <objset, object, -2, blkid>. 266a2cdcdd2SPaul Dagnelie * dnode visit bookmarks are <objset, object id of dnode, -3, 0>. 267ea8dc4b6Seschrock * 268b24ab676SJeff Bonwick * Note: this structure is called a bookmark because its original purpose 269b24ab676SJeff Bonwick * was to remember where to resume a pool-wide traverse. 270ea8dc4b6Seschrock * 2717802d7bfSMatthew Ahrens * Note: this structure is passed between userland and the kernel, and is 2727802d7bfSMatthew Ahrens * stored on disk (by virtue of being incorporated into other on-disk 2737802d7bfSMatthew Ahrens * structures, e.g. dsl_scan_phys_t). 274ea8dc4b6Seschrock */ 2757802d7bfSMatthew Ahrens typedef struct zbookmark_phys { 276ea8dc4b6Seschrock uint64_t zb_objset; 277ea8dc4b6Seschrock uint64_t zb_object; 278ea8dc4b6Seschrock int64_t zb_level; 279ea8dc4b6Seschrock uint64_t zb_blkid; 2807802d7bfSMatthew Ahrens } zbookmark_phys_t; 281ea8dc4b6Seschrock 282b24ab676SJeff Bonwick #define SET_BOOKMARK(zb, objset, object, level, blkid) \ 283b24ab676SJeff Bonwick { \ 284b24ab676SJeff Bonwick (zb)->zb_objset = objset; \ 285b24ab676SJeff Bonwick (zb)->zb_object = object; \ 286b24ab676SJeff Bonwick (zb)->zb_level = level; \ 287b24ab676SJeff Bonwick (zb)->zb_blkid = blkid; \ 288b24ab676SJeff Bonwick } 289b24ab676SJeff Bonwick 290b24ab676SJeff Bonwick #define ZB_DESTROYED_OBJSET (-1ULL) 291b24ab676SJeff Bonwick 292b24ab676SJeff Bonwick #define ZB_ROOT_OBJECT (0ULL) 293b24ab676SJeff Bonwick #define ZB_ROOT_LEVEL (-1LL) 294b24ab676SJeff Bonwick #define ZB_ROOT_BLKID (0ULL) 295b24ab676SJeff Bonwick 296b24ab676SJeff Bonwick #define ZB_ZIL_OBJECT (0ULL) 297b24ab676SJeff Bonwick #define ZB_ZIL_LEVEL (-2LL) 298b24ab676SJeff Bonwick 299a2cdcdd2SPaul Dagnelie #define ZB_DNODE_LEVEL (-3LL) 300a2cdcdd2SPaul Dagnelie #define ZB_DNODE_BLKID (0ULL) 301a2cdcdd2SPaul Dagnelie 302ad135b5dSChristopher Siden #define ZB_IS_ZERO(zb) \ 303ad135b5dSChristopher Siden ((zb)->zb_objset == 0 && (zb)->zb_object == 0 && \ 304ad135b5dSChristopher Siden (zb)->zb_level == 0 && (zb)->zb_blkid == 0) 305ad135b5dSChristopher Siden #define ZB_IS_ROOT(zb) \ 306ad135b5dSChristopher Siden ((zb)->zb_object == ZB_ROOT_OBJECT && \ 307ad135b5dSChristopher Siden (zb)->zb_level == ZB_ROOT_LEVEL && \ 308ad135b5dSChristopher Siden (zb)->zb_blkid == ZB_ROOT_BLKID) 309ad135b5dSChristopher Siden 310e14bb325SJeff Bonwick typedef struct zio_prop { 311e14bb325SJeff Bonwick enum zio_checksum zp_checksum; 312e14bb325SJeff Bonwick enum zio_compress zp_compress; 313e14bb325SJeff Bonwick dmu_object_type_t zp_type; 314e14bb325SJeff Bonwick uint8_t zp_level; 315b24ab676SJeff Bonwick uint8_t zp_copies; 31680901aeaSGeorge Wilson boolean_t zp_dedup; 31780901aeaSGeorge Wilson boolean_t zp_dedup_verify; 31880901aeaSGeorge Wilson boolean_t zp_nopwrite; 319e14bb325SJeff Bonwick } zio_prop_t; 320e14bb325SJeff Bonwick 32122fe2c88SJonathan Adams typedef struct zio_cksum_report zio_cksum_report_t; 32222fe2c88SJonathan Adams 32322fe2c88SJonathan Adams typedef void zio_cksum_finish_f(zio_cksum_report_t *rep, 32422fe2c88SJonathan Adams const void *good_data); 32522fe2c88SJonathan Adams typedef void zio_cksum_free_f(void *cbdata, size_t size); 32622fe2c88SJonathan Adams 32722fe2c88SJonathan Adams struct zio_bad_cksum; /* defined in zio_checksum.h */ 328ad135b5dSChristopher Siden struct dnode_phys; 32922fe2c88SJonathan Adams 33022fe2c88SJonathan Adams struct zio_cksum_report { 33122fe2c88SJonathan Adams struct zio_cksum_report *zcr_next; 33222fe2c88SJonathan Adams nvlist_t *zcr_ereport; 33322fe2c88SJonathan Adams nvlist_t *zcr_detector; 33422fe2c88SJonathan Adams void *zcr_cbdata; 33522fe2c88SJonathan Adams size_t zcr_cbinfo; /* passed to zcr_free() */ 336b24ab676SJeff Bonwick uint64_t zcr_align; 33722fe2c88SJonathan Adams uint64_t zcr_length; 33822fe2c88SJonathan Adams zio_cksum_finish_f *zcr_finish; 33922fe2c88SJonathan Adams zio_cksum_free_f *zcr_free; 34022fe2c88SJonathan Adams 34122fe2c88SJonathan Adams /* internal use only */ 34222fe2c88SJonathan Adams struct zio_bad_cksum *zcr_ckinfo; /* information from failure */ 34322fe2c88SJonathan Adams }; 34422fe2c88SJonathan Adams 34522fe2c88SJonathan Adams typedef void zio_vsd_cksum_report_f(zio_t *zio, zio_cksum_report_t *zcr, 34622fe2c88SJonathan Adams void *arg); 34722fe2c88SJonathan Adams 34822fe2c88SJonathan Adams zio_vsd_cksum_report_f zio_vsd_default_cksum_report; 34922fe2c88SJonathan Adams 35022fe2c88SJonathan Adams typedef struct zio_vsd_ops { 35122fe2c88SJonathan Adams zio_done_func_t *vsd_free; 35222fe2c88SJonathan Adams zio_vsd_cksum_report_f *vsd_cksum_report; 35322fe2c88SJonathan Adams } zio_vsd_ops_t; 35422fe2c88SJonathan Adams 355e14bb325SJeff Bonwick typedef struct zio_gang_node { 356e14bb325SJeff Bonwick zio_gbh_phys_t *gn_gbh; 357e14bb325SJeff Bonwick struct zio_gang_node *gn_child[SPA_GBH_NBLKPTRS]; 358e14bb325SJeff Bonwick } zio_gang_node_t; 359e14bb325SJeff Bonwick 360e14bb325SJeff Bonwick typedef zio_t *zio_gang_issue_func_t(zio_t *zio, blkptr_t *bp, 361e14bb325SJeff Bonwick zio_gang_node_t *gn, void *data); 362e14bb325SJeff Bonwick 363e14bb325SJeff Bonwick typedef void zio_transform_func_t(zio_t *zio, void *data, uint64_t size); 364e14bb325SJeff Bonwick 365e14bb325SJeff Bonwick typedef struct zio_transform { 366e14bb325SJeff Bonwick void *zt_orig_data; 367e14bb325SJeff Bonwick uint64_t zt_orig_size; 368e14bb325SJeff Bonwick uint64_t zt_bufsize; 369e14bb325SJeff Bonwick zio_transform_func_t *zt_transform; 370e14bb325SJeff Bonwick struct zio_transform *zt_next; 371e14bb325SJeff Bonwick } zio_transform_t; 372e14bb325SJeff Bonwick 373e14bb325SJeff Bonwick typedef int zio_pipe_stage_t(zio_t *zio); 374e14bb325SJeff Bonwick 375e14bb325SJeff Bonwick /* 376e14bb325SJeff Bonwick * The io_reexecute flags are distinct from io_flags because the child must 377e14bb325SJeff Bonwick * be able to propagate them to the parent. The normal io_flags are local 378e14bb325SJeff Bonwick * to the zio, not protected by any lock, and not modifiable by children; 379e14bb325SJeff Bonwick * the reexecute flags are protected by io_lock, modifiable by children, 380e14bb325SJeff Bonwick * and always propagated -- even when ZIO_FLAG_DONT_PROPAGATE is set. 381e14bb325SJeff Bonwick */ 382e14bb325SJeff Bonwick #define ZIO_REEXECUTE_NOW 0x01 383e14bb325SJeff Bonwick #define ZIO_REEXECUTE_SUSPEND 0x02 384e14bb325SJeff Bonwick 385a3f829aeSBill Moore typedef struct zio_link { 386a3f829aeSBill Moore zio_t *zl_parent; 387a3f829aeSBill Moore zio_t *zl_child; 388a3f829aeSBill Moore list_node_t zl_parent_node; 389a3f829aeSBill Moore list_node_t zl_child_node; 390a3f829aeSBill Moore } zio_link_t; 391a3f829aeSBill Moore 392fa9e4066Sahrens struct zio { 393fa9e4066Sahrens /* Core information about this I/O */ 3947802d7bfSMatthew Ahrens zbookmark_phys_t io_bookmark; 395e14bb325SJeff Bonwick zio_prop_t io_prop; 396e14bb325SJeff Bonwick zio_type_t io_type; 397e14bb325SJeff Bonwick enum zio_child io_child_type; 398e14bb325SJeff Bonwick int io_cmd; 39969962b56SMatthew Ahrens zio_priority_t io_priority; 400e14bb325SJeff Bonwick uint8_t io_reexecute; 401a3f829aeSBill Moore uint8_t io_state[ZIO_WAIT_TYPES]; 402fa9e4066Sahrens uint64_t io_txg; 403e14bb325SJeff Bonwick spa_t *io_spa; 404fa9e4066Sahrens blkptr_t *io_bp; 405b24ab676SJeff Bonwick blkptr_t *io_bp_override; 406fa9e4066Sahrens blkptr_t io_bp_copy; 407a3f829aeSBill Moore list_t io_parent_list; 408a3f829aeSBill Moore list_t io_child_list; 409ea8dc4b6Seschrock zio_t *io_logical; 410e14bb325SJeff Bonwick zio_transform_t *io_transform_stack; 411fa9e4066Sahrens 412fa9e4066Sahrens /* Callback info */ 413c717a561Smaybee zio_done_func_t *io_ready; 4148df0bcf0SPaul Dagnelie zio_done_func_t *io_children_ready; 41569962b56SMatthew Ahrens zio_done_func_t *io_physdone; 416fa9e4066Sahrens zio_done_func_t *io_done; 417fa9e4066Sahrens void *io_private; 418b24ab676SJeff Bonwick int64_t io_prev_space_delta; /* DMU private */ 419fa9e4066Sahrens blkptr_t io_bp_orig; 420fa9e4066Sahrens 421fa9e4066Sahrens /* Data represented by this I/O */ 422fa9e4066Sahrens void *io_data; 423b24ab676SJeff Bonwick void *io_orig_data; 424fa9e4066Sahrens uint64_t io_size; 425b24ab676SJeff Bonwick uint64_t io_orig_size; 426fa9e4066Sahrens 427fa9e4066Sahrens /* Stuff for the vdev stack */ 428fa9e4066Sahrens vdev_t *io_vd; 429fa9e4066Sahrens void *io_vsd; 43022fe2c88SJonathan Adams const zio_vsd_ops_t *io_vsd_ops; 43122fe2c88SJonathan Adams 432fa9e4066Sahrens uint64_t io_offset; 433c55e05cbSMatthew Ahrens hrtime_t io_timestamp; 4340f7643c7SGeorge Wilson hrtime_t io_queued_timestamp; 43597e81309SPrakash Surya hrtime_t io_target_timestamp; 43669962b56SMatthew Ahrens avl_node_t io_queue_node; 437fe319232SJustin T. Gibbs avl_node_t io_offset_node; 4380f7643c7SGeorge Wilson avl_node_t io_alloc_node; 439fa9e4066Sahrens 440fa9e4066Sahrens /* Internal pipeline state */ 441b24ab676SJeff Bonwick enum zio_flag io_flags; 442b24ab676SJeff Bonwick enum zio_stage io_stage; 443b24ab676SJeff Bonwick enum zio_stage io_pipeline; 444b24ab676SJeff Bonwick enum zio_flag io_orig_flags; 445b24ab676SJeff Bonwick enum zio_stage io_orig_stage; 446b24ab676SJeff Bonwick enum zio_stage io_orig_pipeline; 4470f7643c7SGeorge Wilson enum zio_stage io_pipeline_trace; 448e14bb325SJeff Bonwick int io_error; 449e14bb325SJeff Bonwick int io_child_error[ZIO_CHILD_TYPES]; 450e14bb325SJeff Bonwick uint64_t io_children[ZIO_CHILD_TYPES][ZIO_WAIT_TYPES]; 451b24ab676SJeff Bonwick uint64_t io_child_count; 45269962b56SMatthew Ahrens uint64_t io_phys_children; 453b24ab676SJeff Bonwick uint64_t io_parent_count; 454e14bb325SJeff Bonwick uint64_t *io_stall; 455f5383399SBill Moore zio_t *io_gang_leader; 456e14bb325SJeff Bonwick zio_gang_node_t *io_gang_tree; 457e14bb325SJeff Bonwick void *io_executor; 458fa9e4066Sahrens void *io_waiter; 459fa9e4066Sahrens kmutex_t io_lock; 460fa9e4066Sahrens kcondvar_t io_cv; 461ea8dc4b6Seschrock 462ea8dc4b6Seschrock /* FMA state */ 46322fe2c88SJonathan Adams zio_cksum_report_t *io_cksum_report; 464ea8dc4b6Seschrock uint64_t io_ena; 4655aeb9474SGarrett D'Amore 4665aeb9474SGarrett D'Amore /* Taskq dispatching state */ 4675aeb9474SGarrett D'Amore taskq_ent_t io_tqent; 468fa9e4066Sahrens }; 469fa9e4066Sahrens 4700f7643c7SGeorge Wilson extern int zio_timestamp_compare(const void *, const void *); 4710f7643c7SGeorge Wilson 472a3f829aeSBill Moore extern zio_t *zio_null(zio_t *pio, spa_t *spa, vdev_t *vd, 473b24ab676SJeff Bonwick zio_done_func_t *done, void *private, enum zio_flag flags); 474fa9e4066Sahrens 475fa9e4066Sahrens extern zio_t *zio_root(spa_t *spa, 476b24ab676SJeff Bonwick zio_done_func_t *done, void *private, enum zio_flag flags); 477fa9e4066Sahrens 478088f3894Sahrens extern zio_t *zio_read(zio_t *pio, spa_t *spa, const blkptr_t *bp, void *data, 479fa9e4066Sahrens uint64_t size, zio_done_func_t *done, void *private, 4807802d7bfSMatthew Ahrens zio_priority_t priority, enum zio_flag flags, const zbookmark_phys_t *zb); 481fa9e4066Sahrens 482e14bb325SJeff Bonwick extern zio_t *zio_write(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, 483b24ab676SJeff Bonwick void *data, uint64_t size, const zio_prop_t *zp, 4848df0bcf0SPaul Dagnelie zio_done_func_t *ready, zio_done_func_t *children_ready, 4858df0bcf0SPaul Dagnelie zio_done_func_t *physdone, zio_done_func_t *done, 4868df0bcf0SPaul Dagnelie void *private, zio_priority_t priority, enum zio_flag flags, 4878df0bcf0SPaul Dagnelie const zbookmark_phys_t *zb); 488fa9e4066Sahrens 489e14bb325SJeff Bonwick extern zio_t *zio_rewrite(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, 490e14bb325SJeff Bonwick void *data, uint64_t size, zio_done_func_t *done, void *private, 4917802d7bfSMatthew Ahrens zio_priority_t priority, enum zio_flag flags, zbookmark_phys_t *zb); 492fa9e4066Sahrens 49380901aeaSGeorge Wilson extern void zio_write_override(zio_t *zio, blkptr_t *bp, int copies, 49480901aeaSGeorge Wilson boolean_t nopwrite); 49582c9918fSTim Haley 496b24ab676SJeff Bonwick extern void zio_free(spa_t *spa, uint64_t txg, const blkptr_t *bp); 497fa9e4066Sahrens 498b24ab676SJeff Bonwick extern zio_t *zio_claim(zio_t *pio, spa_t *spa, uint64_t txg, 499b24ab676SJeff Bonwick const blkptr_t *bp, 500b24ab676SJeff Bonwick zio_done_func_t *done, void *private, enum zio_flag flags); 501fa9e4066Sahrens 502fa9e4066Sahrens extern zio_t *zio_ioctl(zio_t *pio, spa_t *spa, vdev_t *vd, int cmd, 50369962b56SMatthew Ahrens zio_done_func_t *done, void *private, enum zio_flag flags); 504fa9e4066Sahrens 505fa9e4066Sahrens extern zio_t *zio_read_phys(zio_t *pio, vdev_t *vd, uint64_t offset, 506fa9e4066Sahrens uint64_t size, void *data, int checksum, 50769962b56SMatthew Ahrens zio_done_func_t *done, void *private, zio_priority_t priority, 50869962b56SMatthew Ahrens enum zio_flag flags, boolean_t labels); 509fa9e4066Sahrens 510fa9e4066Sahrens extern zio_t *zio_write_phys(zio_t *pio, vdev_t *vd, uint64_t offset, 511fa9e4066Sahrens uint64_t size, void *data, int checksum, 51269962b56SMatthew Ahrens zio_done_func_t *done, void *private, zio_priority_t priority, 51369962b56SMatthew Ahrens enum zio_flag flags, boolean_t labels); 514fa9e4066Sahrens 515b24ab676SJeff Bonwick extern zio_t *zio_free_sync(zio_t *pio, spa_t *spa, uint64_t txg, 516b24ab676SJeff Bonwick const blkptr_t *bp, enum zio_flag flags); 517b24ab676SJeff Bonwick 518b24ab676SJeff Bonwick extern int zio_alloc_zil(spa_t *spa, uint64_t txg, blkptr_t *new_bp, 519b24ab676SJeff Bonwick blkptr_t *old_bp, uint64_t size, boolean_t use_slog); 520b24ab676SJeff Bonwick extern void zio_free_zil(spa_t *spa, uint64_t txg, blkptr_t *bp); 52117f17c2dSbonwick extern void zio_flush(zio_t *zio, vdev_t *vd); 5226e1f5caaSNeil Perrin extern void zio_shrink(zio_t *zio, uint64_t size); 523fa9e4066Sahrens 524fa9e4066Sahrens extern int zio_wait(zio_t *zio); 525fa9e4066Sahrens extern void zio_nowait(zio_t *zio); 526e05725b1Sbonwick extern void zio_execute(zio_t *zio); 527e05725b1Sbonwick extern void zio_interrupt(zio_t *zio); 52897e81309SPrakash Surya extern void zio_delay_init(zio_t *zio); 52997e81309SPrakash Surya extern void zio_delay_interrupt(zio_t *zio); 530e05725b1Sbonwick 5310f7643c7SGeorge Wilson extern zio_t *zio_walk_parents(zio_t *cio, zio_link_t **); 5320f7643c7SGeorge Wilson extern zio_t *zio_walk_children(zio_t *pio, zio_link_t **); 533a3f829aeSBill Moore extern zio_t *zio_unique_parent(zio_t *cio); 534a3f829aeSBill Moore extern void zio_add_child(zio_t *pio, zio_t *cio); 535a3f829aeSBill Moore 536fa9e4066Sahrens extern void *zio_buf_alloc(size_t size); 537fa9e4066Sahrens extern void zio_buf_free(void *buf, size_t size); 538ad23a2dbSjohansen extern void *zio_data_buf_alloc(size_t size); 539ad23a2dbSjohansen extern void zio_data_buf_free(void *buf, size_t size); 540fa9e4066Sahrens 541dcbf3bd6SGeorge Wilson extern void zio_push_transform(zio_t *zio, void *data, uint64_t size, 542dcbf3bd6SGeorge Wilson uint64_t bufsize, zio_transform_func_t *transform); 543dcbf3bd6SGeorge Wilson extern void zio_pop_transforms(zio_t *zio); 544dcbf3bd6SGeorge Wilson 5450a4e9518Sgw extern void zio_resubmit_stage_async(void *); 546fa9e4066Sahrens 547fa9e4066Sahrens extern zio_t *zio_vdev_child_io(zio_t *zio, blkptr_t *bp, vdev_t *vd, 54869962b56SMatthew Ahrens uint64_t offset, void *data, uint64_t size, int type, 54969962b56SMatthew Ahrens zio_priority_t priority, enum zio_flag flags, 55069962b56SMatthew Ahrens zio_done_func_t *done, void *private); 551fa9e4066Sahrens 552e14bb325SJeff Bonwick extern zio_t *zio_vdev_delegated_io(vdev_t *vd, uint64_t offset, 55369962b56SMatthew Ahrens void *data, uint64_t size, int type, zio_priority_t priority, 554b24ab676SJeff Bonwick enum zio_flag flags, zio_done_func_t *done, void *private); 555e14bb325SJeff Bonwick 556fa9e4066Sahrens extern void zio_vdev_io_bypass(zio_t *zio); 557fa9e4066Sahrens extern void zio_vdev_io_reissue(zio_t *zio); 558fa9e4066Sahrens extern void zio_vdev_io_redone(zio_t *zio); 559fa9e4066Sahrens 560fa9e4066Sahrens extern void zio_checksum_verified(zio_t *zio); 561e14bb325SJeff Bonwick extern int zio_worst_error(int e1, int e2); 562fa9e4066Sahrens 563b24ab676SJeff Bonwick extern enum zio_checksum zio_checksum_select(enum zio_checksum child, 564b24ab676SJeff Bonwick enum zio_checksum parent); 565b24ab676SJeff Bonwick extern enum zio_checksum zio_checksum_dedup_select(spa_t *spa, 566b24ab676SJeff Bonwick enum zio_checksum child, enum zio_checksum parent); 567db1741f5SJustin T. Gibbs extern enum zio_compress zio_compress_select(spa_t *spa, 568db1741f5SJustin T. Gibbs enum zio_compress child, enum zio_compress parent); 569fa9e4066Sahrens 570e14bb325SJeff Bonwick extern void zio_suspend(spa_t *spa, zio_t *zio); 57154d692b7SGeorge Wilson extern int zio_resume(spa_t *spa); 572e14bb325SJeff Bonwick extern void zio_resume_wait(spa_t *spa); 573ea8dc4b6Seschrock 574fa9e4066Sahrens /* 575fa9e4066Sahrens * Initial setup and teardown. 576fa9e4066Sahrens */ 577fa9e4066Sahrens extern void zio_init(void); 578fa9e4066Sahrens extern void zio_fini(void); 579fa9e4066Sahrens 580ea8dc4b6Seschrock /* 581ea8dc4b6Seschrock * Fault injection 582ea8dc4b6Seschrock */ 583ea8dc4b6Seschrock struct zinject_record; 584ea8dc4b6Seschrock extern uint32_t zio_injection_enabled; 585ea8dc4b6Seschrock extern int zio_inject_fault(char *name, int flags, int *id, 586ea8dc4b6Seschrock struct zinject_record *record); 587ea8dc4b6Seschrock extern int zio_inject_list_next(int *id, char *name, size_t buflen, 588ea8dc4b6Seschrock struct zinject_record *record); 589ea8dc4b6Seschrock extern int zio_clear_fault(int id); 5901195e687SMark J Musante extern void zio_handle_panic_injection(spa_t *spa, char *tag, uint64_t type); 591ea8dc4b6Seschrock extern int zio_handle_fault_injection(zio_t *zio, int error); 5928956713aSEric Schrock extern int zio_handle_device_injection(vdev_t *vd, zio_t *zio, int error); 59321bf64a7Sgw extern int zio_handle_label_injection(zio_t *zio, int error); 594468c413aSTim Haley extern void zio_handle_ignored_writes(zio_t *zio); 59597e81309SPrakash Surya extern hrtime_t zio_handle_io_delay(zio_t *zio); 596ea8dc4b6Seschrock 59722fe2c88SJonathan Adams /* 59822fe2c88SJonathan Adams * Checksum ereport functions 59922fe2c88SJonathan Adams */ 60022fe2c88SJonathan Adams extern void zfs_ereport_start_checksum(spa_t *spa, vdev_t *vd, struct zio *zio, 60122fe2c88SJonathan Adams uint64_t offset, uint64_t length, void *arg, struct zio_bad_cksum *info); 60222fe2c88SJonathan Adams extern void zfs_ereport_finish_checksum(zio_cksum_report_t *report, 60322fe2c88SJonathan Adams const void *good_data, const void *bad_data, boolean_t drop_if_identical); 60422fe2c88SJonathan Adams 60522fe2c88SJonathan Adams extern void zfs_ereport_send_interim_checksum(zio_cksum_report_t *report); 60622fe2c88SJonathan Adams extern void zfs_ereport_free_checksum(zio_cksum_report_t *report); 60722fe2c88SJonathan Adams 60822fe2c88SJonathan Adams /* If we have the good data in hand, this function can be used */ 60922fe2c88SJonathan Adams extern void zfs_ereport_post_checksum(spa_t *spa, vdev_t *vd, 61022fe2c88SJonathan Adams struct zio *zio, uint64_t offset, uint64_t length, 61122fe2c88SJonathan Adams const void *good_data, const void *bad_data, struct zio_bad_cksum *info); 61222fe2c88SJonathan Adams 613468c413aSTim Haley /* Called from spa_sync(), but primarily an injection handler */ 614468c413aSTim Haley extern void spa_handle_ignored_writes(spa_t *spa); 615468c413aSTim Haley 6167802d7bfSMatthew Ahrens /* zbookmark_phys functions */ 617a2cdcdd2SPaul Dagnelie boolean_t zbookmark_subtree_completed(const struct dnode_phys *dnp, 618a2cdcdd2SPaul Dagnelie const zbookmark_phys_t *subtree_root, const zbookmark_phys_t *last_block); 619a2cdcdd2SPaul Dagnelie int zbookmark_compare(uint16_t dbss1, uint8_t ibs1, uint16_t dbss2, 620a2cdcdd2SPaul Dagnelie uint8_t ibs2, const zbookmark_phys_t *zb1, const zbookmark_phys_t *zb2); 621ad135b5dSChristopher Siden 622fa9e4066Sahrens #ifdef __cplusplus 623fa9e4066Sahrens } 624fa9e4066Sahrens #endif 625fa9e4066Sahrens 626fa9e4066Sahrens #endif /* _ZIO_H */ 627