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. 257802d7bfSMatthew Ahrens * Copyright (c) 2012, 2014 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. 285aeb9474SGarrett D'Amore */ 29fa9e4066Sahrens 30fa9e4066Sahrens #ifndef _ZIO_H 31fa9e4066Sahrens #define _ZIO_H 32fa9e4066Sahrens 33a2cdcdd2SPaul Dagnelie #include <sys/zio_priority.h> 34fa9e4066Sahrens #include <sys/zfs_context.h> 35fa9e4066Sahrens #include <sys/spa.h> 36fa9e4066Sahrens #include <sys/txg.h> 37fa9e4066Sahrens #include <sys/avl.h> 38fa9e4066Sahrens #include <sys/fs/zfs.h> 3944cd46caSbillm #include <sys/zio_impl.h> 40fa9e4066Sahrens 41fa9e4066Sahrens #ifdef __cplusplus 42fa9e4066Sahrens extern "C" { 43fa9e4066Sahrens #endif 44fa9e4066Sahrens 456e1f5caaSNeil Perrin /* 466e1f5caaSNeil Perrin * Embedded checksum 476e1f5caaSNeil Perrin */ 486e1f5caaSNeil Perrin #define ZEC_MAGIC 0x210da7ab10c7a11ULL 49fa9e4066Sahrens 506e1f5caaSNeil Perrin typedef struct zio_eck { 516e1f5caaSNeil Perrin uint64_t zec_magic; /* for validation, endianness */ 526e1f5caaSNeil Perrin zio_cksum_t zec_cksum; /* 256-bit checksum */ 536e1f5caaSNeil Perrin } zio_eck_t; 54fa9e4066Sahrens 55fa9e4066Sahrens /* 56fa9e4066Sahrens * Gang block headers are self-checksumming and contain an array 57fa9e4066Sahrens * of block pointers. 58fa9e4066Sahrens */ 59fa9e4066Sahrens #define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE 60fa9e4066Sahrens #define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \ 616e1f5caaSNeil Perrin sizeof (zio_eck_t)) / sizeof (blkptr_t)) 62fa9e4066Sahrens #define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \ 636e1f5caaSNeil Perrin sizeof (zio_eck_t) - \ 64fa9e4066Sahrens (SPA_GBH_NBLKPTRS * sizeof (blkptr_t))) /\ 65fa9e4066Sahrens sizeof (uint64_t)) 66fa9e4066Sahrens 67fa9e4066Sahrens typedef struct zio_gbh { 68fa9e4066Sahrens blkptr_t zg_blkptr[SPA_GBH_NBLKPTRS]; 69fa9e4066Sahrens uint64_t zg_filler[SPA_GBH_FILLER]; 706e1f5caaSNeil Perrin zio_eck_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, 836e1f5caaSNeil Perrin ZIO_CHECKSUM_ZILOG2, 84810e43b2SBill Pijewski ZIO_CHECKSUM_NOPARITY, 8545818ee1SMatthew Ahrens ZIO_CHECKSUM_SHA512, 8645818ee1SMatthew Ahrens ZIO_CHECKSUM_SKEIN, 8745818ee1SMatthew Ahrens ZIO_CHECKSUM_EDONR, 88fa9e4066Sahrens ZIO_CHECKSUM_FUNCTIONS 89fa9e4066Sahrens }; 90fa9e4066Sahrens 915d7b4d43SMatthew Ahrens /* 925d7b4d43SMatthew Ahrens * The number of "legacy" compression functions which can be set on individual 935d7b4d43SMatthew Ahrens * objects. 945d7b4d43SMatthew Ahrens */ 955d7b4d43SMatthew Ahrens #define ZIO_CHECKSUM_LEGACY_FUNCTIONS ZIO_CHECKSUM_ZILOG2 965d7b4d43SMatthew Ahrens 977e322df5SJonathan Adams #define ZIO_CHECKSUM_ON_VALUE ZIO_CHECKSUM_FLETCHER_4 98fa9e4066Sahrens #define ZIO_CHECKSUM_DEFAULT ZIO_CHECKSUM_ON 99fa9e4066Sahrens 100b24ab676SJeff Bonwick #define ZIO_CHECKSUM_MASK 0xffULL 101b24ab676SJeff Bonwick #define ZIO_CHECKSUM_VERIFY (1 << 8) 102b24ab676SJeff Bonwick 103b24ab676SJeff Bonwick #define ZIO_DEDUPCHECKSUM ZIO_CHECKSUM_SHA256 104b24ab676SJeff Bonwick #define ZIO_DEDUPDITTO_MIN 100 105b24ab676SJeff Bonwick 106fa9e4066Sahrens enum zio_compress { 107fa9e4066Sahrens ZIO_COMPRESS_INHERIT = 0, 108fa9e4066Sahrens ZIO_COMPRESS_ON, 109fa9e4066Sahrens ZIO_COMPRESS_OFF, 110fa9e4066Sahrens ZIO_COMPRESS_LZJB, 111416e0cd8Sek ZIO_COMPRESS_EMPTY, 112c9431fa1Sahl ZIO_COMPRESS_GZIP_1, 113c9431fa1Sahl ZIO_COMPRESS_GZIP_2, 114c9431fa1Sahl ZIO_COMPRESS_GZIP_3, 115c9431fa1Sahl ZIO_COMPRESS_GZIP_4, 116c9431fa1Sahl ZIO_COMPRESS_GZIP_5, 117c9431fa1Sahl ZIO_COMPRESS_GZIP_6, 118c9431fa1Sahl ZIO_COMPRESS_GZIP_7, 119c9431fa1Sahl ZIO_COMPRESS_GZIP_8, 120c9431fa1Sahl ZIO_COMPRESS_GZIP_9, 121b24ab676SJeff Bonwick ZIO_COMPRESS_ZLE, 122a6f561b4SSašo Kiselkov ZIO_COMPRESS_LZ4, 123fa9e4066Sahrens ZIO_COMPRESS_FUNCTIONS 124fa9e4066Sahrens }; 125fa9e4066Sahrens 1265d7b4d43SMatthew Ahrens /* 1275d7b4d43SMatthew Ahrens * The number of "legacy" compression functions which can be set on individual 1285d7b4d43SMatthew Ahrens * objects. 1295d7b4d43SMatthew Ahrens */ 1305d7b4d43SMatthew Ahrens #define ZIO_COMPRESS_LEGACY_FUNCTIONS ZIO_COMPRESS_LZ4 1315d7b4d43SMatthew Ahrens 132db1741f5SJustin T. Gibbs /* 133db1741f5SJustin T. Gibbs * The meaning of "compress = on" selected by the compression features enabled 134db1741f5SJustin T. Gibbs * on a given pool. 135db1741f5SJustin T. Gibbs */ 136db1741f5SJustin T. Gibbs #define ZIO_COMPRESS_LEGACY_ON_VALUE ZIO_COMPRESS_LZJB 137db1741f5SJustin T. Gibbs #define ZIO_COMPRESS_LZ4_ON_VALUE ZIO_COMPRESS_LZ4 138db1741f5SJustin T. Gibbs 139db1741f5SJustin T. Gibbs #define ZIO_COMPRESS_DEFAULT ZIO_COMPRESS_OFF 140fa9e4066Sahrens 141b24ab676SJeff Bonwick #define BOOTFS_COMPRESS_VALID(compress) \ 142b24ab676SJeff Bonwick ((compress) == ZIO_COMPRESS_LZJB || \ 143a6f561b4SSašo Kiselkov (compress) == ZIO_COMPRESS_LZ4 || \ 144db1741f5SJustin T. Gibbs (compress) == ZIO_COMPRESS_ON || \ 145b24ab676SJeff Bonwick (compress) == ZIO_COMPRESS_OFF) 146b24ab676SJeff Bonwick 1470a4e9518Sgw #define ZIO_FAILURE_MODE_WAIT 0 1480a4e9518Sgw #define ZIO_FAILURE_MODE_CONTINUE 1 1490a4e9518Sgw #define ZIO_FAILURE_MODE_PANIC 2 1500a4e9518Sgw 151b24ab676SJeff Bonwick enum zio_flag { 152b24ab676SJeff Bonwick /* 153b24ab676SJeff Bonwick * Flags inherited by gang, ddt, and vdev children, 154b24ab676SJeff Bonwick * and that must be equal for two zios to aggregate 155b24ab676SJeff Bonwick */ 156b24ab676SJeff Bonwick ZIO_FLAG_DONT_AGGREGATE = 1 << 0, 157b24ab676SJeff Bonwick ZIO_FLAG_IO_REPAIR = 1 << 1, 158b24ab676SJeff Bonwick ZIO_FLAG_SELF_HEAL = 1 << 2, 159b24ab676SJeff Bonwick ZIO_FLAG_RESILVER = 1 << 3, 160b24ab676SJeff Bonwick ZIO_FLAG_SCRUB = 1 << 4, 16144ecc532SGeorge Wilson ZIO_FLAG_SCAN_THREAD = 1 << 5, 1622a104a52SAlex Reece ZIO_FLAG_PHYSICAL = 1 << 6, 163b24ab676SJeff Bonwick 164b24ab676SJeff Bonwick #define ZIO_FLAG_AGG_INHERIT (ZIO_FLAG_CANFAIL - 1) 165b24ab676SJeff Bonwick 166b24ab676SJeff Bonwick /* 167b24ab676SJeff Bonwick * Flags inherited by ddt, gang, and vdev children. 168b24ab676SJeff Bonwick */ 1692a104a52SAlex Reece ZIO_FLAG_CANFAIL = 1 << 7, /* must be first for INHERIT */ 1702a104a52SAlex Reece ZIO_FLAG_SPECULATIVE = 1 << 8, 1712a104a52SAlex Reece ZIO_FLAG_CONFIG_WRITER = 1 << 9, 1722a104a52SAlex Reece ZIO_FLAG_DONT_RETRY = 1 << 10, 1732a104a52SAlex Reece ZIO_FLAG_DONT_CACHE = 1 << 11, 1742a104a52SAlex Reece ZIO_FLAG_NODATA = 1 << 12, 1752a104a52SAlex Reece ZIO_FLAG_INDUCE_DAMAGE = 1 << 13, 176b24ab676SJeff Bonwick 177b24ab676SJeff Bonwick #define ZIO_FLAG_DDT_INHERIT (ZIO_FLAG_IO_RETRY - 1) 178b24ab676SJeff Bonwick #define ZIO_FLAG_GANG_INHERIT (ZIO_FLAG_IO_RETRY - 1) 179b24ab676SJeff Bonwick 180b24ab676SJeff Bonwick /* 181b24ab676SJeff Bonwick * Flags inherited by vdev children. 182b24ab676SJeff Bonwick */ 1832a104a52SAlex Reece ZIO_FLAG_IO_RETRY = 1 << 14, /* must be first for INHERIT */ 1842a104a52SAlex Reece ZIO_FLAG_PROBE = 1 << 15, 1852a104a52SAlex Reece ZIO_FLAG_TRYHARD = 1 << 16, 1862a104a52SAlex Reece ZIO_FLAG_OPTIONAL = 1 << 17, 187b24ab676SJeff Bonwick 188b24ab676SJeff Bonwick #define ZIO_FLAG_VDEV_INHERIT (ZIO_FLAG_DONT_QUEUE - 1) 189b24ab676SJeff Bonwick 190b24ab676SJeff Bonwick /* 191b24ab676SJeff Bonwick * Flags not inherited by any children. 192b24ab676SJeff Bonwick */ 1932a104a52SAlex Reece ZIO_FLAG_DONT_QUEUE = 1 << 18, /* must be first for INHERIT */ 1942a104a52SAlex Reece ZIO_FLAG_DONT_PROPAGATE = 1 << 19, 1952a104a52SAlex Reece ZIO_FLAG_IO_BYPASS = 1 << 20, 1962a104a52SAlex Reece ZIO_FLAG_IO_REWRITE = 1 << 21, 1972a104a52SAlex Reece ZIO_FLAG_RAW = 1 << 22, 1982a104a52SAlex Reece ZIO_FLAG_GANG_CHILD = 1 << 23, 1992a104a52SAlex Reece ZIO_FLAG_DDT_CHILD = 1 << 24, 2002a104a52SAlex Reece ZIO_FLAG_GODFATHER = 1 << 25, 2012a104a52SAlex Reece ZIO_FLAG_NOPWRITE = 1 << 26, 2022a104a52SAlex Reece ZIO_FLAG_REEXECUTED = 1 << 27, 2032a104a52SAlex Reece ZIO_FLAG_DELEGATED = 1 << 28, 204b24ab676SJeff Bonwick }; 205b24ab676SJeff Bonwick 206b24ab676SJeff Bonwick #define ZIO_FLAG_MUSTSUCCEED 0 207b24ab676SJeff Bonwick 208b24ab676SJeff Bonwick #define ZIO_DDT_CHILD_FLAGS(zio) \ 209b24ab676SJeff Bonwick (((zio)->io_flags & ZIO_FLAG_DDT_INHERIT) | \ 210b24ab676SJeff Bonwick ZIO_FLAG_DDT_CHILD | ZIO_FLAG_CANFAIL) 211b24ab676SJeff Bonwick 212e14bb325SJeff Bonwick #define ZIO_GANG_CHILD_FLAGS(zio) \ 213e14bb325SJeff Bonwick (((zio)->io_flags & ZIO_FLAG_GANG_INHERIT) | \ 214e14bb325SJeff Bonwick ZIO_FLAG_GANG_CHILD | ZIO_FLAG_CANFAIL) 215e14bb325SJeff Bonwick 216b24ab676SJeff Bonwick #define ZIO_VDEV_CHILD_FLAGS(zio) \ 217b24ab676SJeff Bonwick (((zio)->io_flags & ZIO_FLAG_VDEV_INHERIT) | \ 218b24ab676SJeff Bonwick ZIO_FLAG_CANFAIL) 219b24ab676SJeff Bonwick 220e14bb325SJeff Bonwick enum zio_child { 221e14bb325SJeff Bonwick ZIO_CHILD_VDEV = 0, 222e14bb325SJeff Bonwick ZIO_CHILD_GANG, 223b24ab676SJeff Bonwick ZIO_CHILD_DDT, 224e14bb325SJeff Bonwick ZIO_CHILD_LOGICAL, 225e14bb325SJeff Bonwick ZIO_CHILD_TYPES 226e14bb325SJeff Bonwick }; 227e14bb325SJeff Bonwick 228e14bb325SJeff Bonwick enum zio_wait_type { 229e14bb325SJeff Bonwick ZIO_WAIT_READY = 0, 230e14bb325SJeff Bonwick ZIO_WAIT_DONE, 231e14bb325SJeff Bonwick ZIO_WAIT_TYPES 232e14bb325SJeff Bonwick }; 233e14bb325SJeff Bonwick 234fa9e4066Sahrens /* 235e7cbe64fSgw * We'll take the unused errnos, 'EBADE' and 'EBADR' (from the Convergent 236e7cbe64fSgw * graveyard) to indicate checksum errors and fragmentation. 237fa9e4066Sahrens */ 238fa9e4066Sahrens #define ECKSUM EBADE 239e7cbe64fSgw #define EFRAGS EBADR 240fa9e4066Sahrens 241fa9e4066Sahrens typedef void zio_done_func_t(zio_t *zio); 242fa9e4066Sahrens 24369962b56SMatthew Ahrens extern const char *zio_type_name[ZIO_TYPES]; 244fa9e4066Sahrens 245ea8dc4b6Seschrock /* 246ea8dc4b6Seschrock * A bookmark is a four-tuple <objset, object, level, blkid> that uniquely 247ea8dc4b6Seschrock * identifies any block in the pool. By convention, the meta-objset (MOS) 248b24ab676SJeff Bonwick * is objset 0, and the meta-dnode is object 0. This covers all blocks 249b24ab676SJeff Bonwick * except root blocks and ZIL blocks, which are defined as follows: 250ea8dc4b6Seschrock * 251b24ab676SJeff Bonwick * Root blocks (objset_phys_t) are object 0, level -1: <objset, 0, -1, 0>. 252b24ab676SJeff Bonwick * ZIL blocks are bookmarked <objset, 0, -2, blkid == ZIL sequence number>. 253b24ab676SJeff Bonwick * dmu_sync()ed ZIL data blocks are bookmarked <objset, object, -2, blkid>. 254a2cdcdd2SPaul Dagnelie * dnode visit bookmarks are <objset, object id of dnode, -3, 0>. 255ea8dc4b6Seschrock * 256b24ab676SJeff Bonwick * Note: this structure is called a bookmark because its original purpose 257b24ab676SJeff Bonwick * was to remember where to resume a pool-wide traverse. 258ea8dc4b6Seschrock * 2597802d7bfSMatthew Ahrens * Note: this structure is passed between userland and the kernel, and is 2607802d7bfSMatthew Ahrens * stored on disk (by virtue of being incorporated into other on-disk 2617802d7bfSMatthew Ahrens * structures, e.g. dsl_scan_phys_t). 262ea8dc4b6Seschrock */ 2637802d7bfSMatthew Ahrens typedef struct zbookmark_phys { 264ea8dc4b6Seschrock uint64_t zb_objset; 265ea8dc4b6Seschrock uint64_t zb_object; 266ea8dc4b6Seschrock int64_t zb_level; 267ea8dc4b6Seschrock uint64_t zb_blkid; 2687802d7bfSMatthew Ahrens } zbookmark_phys_t; 269ea8dc4b6Seschrock 270b24ab676SJeff Bonwick #define SET_BOOKMARK(zb, objset, object, level, blkid) \ 271b24ab676SJeff Bonwick { \ 272b24ab676SJeff Bonwick (zb)->zb_objset = objset; \ 273b24ab676SJeff Bonwick (zb)->zb_object = object; \ 274b24ab676SJeff Bonwick (zb)->zb_level = level; \ 275b24ab676SJeff Bonwick (zb)->zb_blkid = blkid; \ 276b24ab676SJeff Bonwick } 277b24ab676SJeff Bonwick 278b24ab676SJeff Bonwick #define ZB_DESTROYED_OBJSET (-1ULL) 279b24ab676SJeff Bonwick 280b24ab676SJeff Bonwick #define ZB_ROOT_OBJECT (0ULL) 281b24ab676SJeff Bonwick #define ZB_ROOT_LEVEL (-1LL) 282b24ab676SJeff Bonwick #define ZB_ROOT_BLKID (0ULL) 283b24ab676SJeff Bonwick 284b24ab676SJeff Bonwick #define ZB_ZIL_OBJECT (0ULL) 285b24ab676SJeff Bonwick #define ZB_ZIL_LEVEL (-2LL) 286b24ab676SJeff Bonwick 287a2cdcdd2SPaul Dagnelie #define ZB_DNODE_LEVEL (-3LL) 288a2cdcdd2SPaul Dagnelie #define ZB_DNODE_BLKID (0ULL) 289a2cdcdd2SPaul Dagnelie 290ad135b5dSChristopher Siden #define ZB_IS_ZERO(zb) \ 291ad135b5dSChristopher Siden ((zb)->zb_objset == 0 && (zb)->zb_object == 0 && \ 292ad135b5dSChristopher Siden (zb)->zb_level == 0 && (zb)->zb_blkid == 0) 293ad135b5dSChristopher Siden #define ZB_IS_ROOT(zb) \ 294ad135b5dSChristopher Siden ((zb)->zb_object == ZB_ROOT_OBJECT && \ 295ad135b5dSChristopher Siden (zb)->zb_level == ZB_ROOT_LEVEL && \ 296ad135b5dSChristopher Siden (zb)->zb_blkid == ZB_ROOT_BLKID) 297ad135b5dSChristopher Siden 298e14bb325SJeff Bonwick typedef struct zio_prop { 299e14bb325SJeff Bonwick enum zio_checksum zp_checksum; 300e14bb325SJeff Bonwick enum zio_compress zp_compress; 301e14bb325SJeff Bonwick dmu_object_type_t zp_type; 302e14bb325SJeff Bonwick uint8_t zp_level; 303b24ab676SJeff Bonwick uint8_t zp_copies; 30480901aeaSGeorge Wilson boolean_t zp_dedup; 30580901aeaSGeorge Wilson boolean_t zp_dedup_verify; 30680901aeaSGeorge Wilson boolean_t zp_nopwrite; 307e14bb325SJeff Bonwick } zio_prop_t; 308e14bb325SJeff Bonwick 30922fe2c88SJonathan Adams typedef struct zio_cksum_report zio_cksum_report_t; 31022fe2c88SJonathan Adams 31122fe2c88SJonathan Adams typedef void zio_cksum_finish_f(zio_cksum_report_t *rep, 31222fe2c88SJonathan Adams const void *good_data); 31322fe2c88SJonathan Adams typedef void zio_cksum_free_f(void *cbdata, size_t size); 31422fe2c88SJonathan Adams 31522fe2c88SJonathan Adams struct zio_bad_cksum; /* defined in zio_checksum.h */ 316ad135b5dSChristopher Siden struct dnode_phys; 31722fe2c88SJonathan Adams 31822fe2c88SJonathan Adams struct zio_cksum_report { 31922fe2c88SJonathan Adams struct zio_cksum_report *zcr_next; 32022fe2c88SJonathan Adams nvlist_t *zcr_ereport; 32122fe2c88SJonathan Adams nvlist_t *zcr_detector; 32222fe2c88SJonathan Adams void *zcr_cbdata; 32322fe2c88SJonathan Adams size_t zcr_cbinfo; /* passed to zcr_free() */ 324b24ab676SJeff Bonwick uint64_t zcr_align; 32522fe2c88SJonathan Adams uint64_t zcr_length; 32622fe2c88SJonathan Adams zio_cksum_finish_f *zcr_finish; 32722fe2c88SJonathan Adams zio_cksum_free_f *zcr_free; 32822fe2c88SJonathan Adams 32922fe2c88SJonathan Adams /* internal use only */ 33022fe2c88SJonathan Adams struct zio_bad_cksum *zcr_ckinfo; /* information from failure */ 33122fe2c88SJonathan Adams }; 33222fe2c88SJonathan Adams 33322fe2c88SJonathan Adams typedef void zio_vsd_cksum_report_f(zio_t *zio, zio_cksum_report_t *zcr, 33422fe2c88SJonathan Adams void *arg); 33522fe2c88SJonathan Adams 33622fe2c88SJonathan Adams zio_vsd_cksum_report_f zio_vsd_default_cksum_report; 33722fe2c88SJonathan Adams 33822fe2c88SJonathan Adams typedef struct zio_vsd_ops { 33922fe2c88SJonathan Adams zio_done_func_t *vsd_free; 34022fe2c88SJonathan Adams zio_vsd_cksum_report_f *vsd_cksum_report; 34122fe2c88SJonathan Adams } zio_vsd_ops_t; 34222fe2c88SJonathan Adams 343e14bb325SJeff Bonwick typedef struct zio_gang_node { 344e14bb325SJeff Bonwick zio_gbh_phys_t *gn_gbh; 345e14bb325SJeff Bonwick struct zio_gang_node *gn_child[SPA_GBH_NBLKPTRS]; 346e14bb325SJeff Bonwick } zio_gang_node_t; 347e14bb325SJeff Bonwick 348e14bb325SJeff Bonwick typedef zio_t *zio_gang_issue_func_t(zio_t *zio, blkptr_t *bp, 349e14bb325SJeff Bonwick zio_gang_node_t *gn, void *data); 350e14bb325SJeff Bonwick 351e14bb325SJeff Bonwick typedef void zio_transform_func_t(zio_t *zio, void *data, uint64_t size); 352e14bb325SJeff Bonwick 353e14bb325SJeff Bonwick typedef struct zio_transform { 354e14bb325SJeff Bonwick void *zt_orig_data; 355e14bb325SJeff Bonwick uint64_t zt_orig_size; 356e14bb325SJeff Bonwick uint64_t zt_bufsize; 357e14bb325SJeff Bonwick zio_transform_func_t *zt_transform; 358e14bb325SJeff Bonwick struct zio_transform *zt_next; 359e14bb325SJeff Bonwick } zio_transform_t; 360e14bb325SJeff Bonwick 361e14bb325SJeff Bonwick typedef int zio_pipe_stage_t(zio_t *zio); 362e14bb325SJeff Bonwick 363e14bb325SJeff Bonwick /* 364e14bb325SJeff Bonwick * The io_reexecute flags are distinct from io_flags because the child must 365e14bb325SJeff Bonwick * be able to propagate them to the parent. The normal io_flags are local 366e14bb325SJeff Bonwick * to the zio, not protected by any lock, and not modifiable by children; 367e14bb325SJeff Bonwick * the reexecute flags are protected by io_lock, modifiable by children, 368e14bb325SJeff Bonwick * and always propagated -- even when ZIO_FLAG_DONT_PROPAGATE is set. 369e14bb325SJeff Bonwick */ 370e14bb325SJeff Bonwick #define ZIO_REEXECUTE_NOW 0x01 371e14bb325SJeff Bonwick #define ZIO_REEXECUTE_SUSPEND 0x02 372e14bb325SJeff Bonwick 373a3f829aeSBill Moore typedef struct zio_link { 374a3f829aeSBill Moore zio_t *zl_parent; 375a3f829aeSBill Moore zio_t *zl_child; 376a3f829aeSBill Moore list_node_t zl_parent_node; 377a3f829aeSBill Moore list_node_t zl_child_node; 378a3f829aeSBill Moore } zio_link_t; 379a3f829aeSBill Moore 380fa9e4066Sahrens struct zio { 381fa9e4066Sahrens /* Core information about this I/O */ 3827802d7bfSMatthew Ahrens zbookmark_phys_t io_bookmark; 383e14bb325SJeff Bonwick zio_prop_t io_prop; 384e14bb325SJeff Bonwick zio_type_t io_type; 385e14bb325SJeff Bonwick enum zio_child io_child_type; 386e14bb325SJeff Bonwick int io_cmd; 38769962b56SMatthew Ahrens zio_priority_t io_priority; 388e14bb325SJeff Bonwick uint8_t io_reexecute; 389a3f829aeSBill Moore uint8_t io_state[ZIO_WAIT_TYPES]; 390fa9e4066Sahrens uint64_t io_txg; 391e14bb325SJeff Bonwick spa_t *io_spa; 392fa9e4066Sahrens blkptr_t *io_bp; 393b24ab676SJeff Bonwick blkptr_t *io_bp_override; 394fa9e4066Sahrens blkptr_t io_bp_copy; 395a3f829aeSBill Moore list_t io_parent_list; 396a3f829aeSBill Moore list_t io_child_list; 397a3f829aeSBill Moore zio_link_t *io_walk_link; 398ea8dc4b6Seschrock zio_t *io_logical; 399e14bb325SJeff Bonwick zio_transform_t *io_transform_stack; 400fa9e4066Sahrens 401fa9e4066Sahrens /* Callback info */ 402c717a561Smaybee zio_done_func_t *io_ready; 40369962b56SMatthew Ahrens zio_done_func_t *io_physdone; 404fa9e4066Sahrens zio_done_func_t *io_done; 405fa9e4066Sahrens void *io_private; 406b24ab676SJeff Bonwick int64_t io_prev_space_delta; /* DMU private */ 407fa9e4066Sahrens blkptr_t io_bp_orig; 408fa9e4066Sahrens 409fa9e4066Sahrens /* Data represented by this I/O */ 410fa9e4066Sahrens void *io_data; 411b24ab676SJeff Bonwick void *io_orig_data; 412fa9e4066Sahrens uint64_t io_size; 413b24ab676SJeff Bonwick uint64_t io_orig_size; 414fa9e4066Sahrens 415fa9e4066Sahrens /* Stuff for the vdev stack */ 416fa9e4066Sahrens vdev_t *io_vd; 417fa9e4066Sahrens void *io_vsd; 41822fe2c88SJonathan Adams const zio_vsd_ops_t *io_vsd_ops; 41922fe2c88SJonathan Adams 420fa9e4066Sahrens uint64_t io_offset; 421c55e05cbSMatthew Ahrens hrtime_t io_timestamp; 422*97e81309SPrakash Surya hrtime_t io_target_timestamp; 42369962b56SMatthew Ahrens avl_node_t io_queue_node; 424fe319232SJustin T. Gibbs avl_node_t io_offset_node; 425fa9e4066Sahrens 426fa9e4066Sahrens /* Internal pipeline state */ 427b24ab676SJeff Bonwick enum zio_flag io_flags; 428b24ab676SJeff Bonwick enum zio_stage io_stage; 429b24ab676SJeff Bonwick enum zio_stage io_pipeline; 430b24ab676SJeff Bonwick enum zio_flag io_orig_flags; 431b24ab676SJeff Bonwick enum zio_stage io_orig_stage; 432b24ab676SJeff Bonwick enum zio_stage io_orig_pipeline; 433e14bb325SJeff Bonwick int io_error; 434e14bb325SJeff Bonwick int io_child_error[ZIO_CHILD_TYPES]; 435e14bb325SJeff Bonwick uint64_t io_children[ZIO_CHILD_TYPES][ZIO_WAIT_TYPES]; 436b24ab676SJeff Bonwick uint64_t io_child_count; 43769962b56SMatthew Ahrens uint64_t io_phys_children; 438b24ab676SJeff Bonwick uint64_t io_parent_count; 439e14bb325SJeff Bonwick uint64_t *io_stall; 440f5383399SBill Moore zio_t *io_gang_leader; 441e14bb325SJeff Bonwick zio_gang_node_t *io_gang_tree; 442e14bb325SJeff Bonwick void *io_executor; 443fa9e4066Sahrens void *io_waiter; 444fa9e4066Sahrens kmutex_t io_lock; 445fa9e4066Sahrens kcondvar_t io_cv; 446ea8dc4b6Seschrock 447ea8dc4b6Seschrock /* FMA state */ 44822fe2c88SJonathan Adams zio_cksum_report_t *io_cksum_report; 449ea8dc4b6Seschrock uint64_t io_ena; 4505aeb9474SGarrett D'Amore 4515aeb9474SGarrett D'Amore /* Taskq dispatching state */ 4525aeb9474SGarrett D'Amore taskq_ent_t io_tqent; 453fa9e4066Sahrens }; 454fa9e4066Sahrens 455a3f829aeSBill Moore extern zio_t *zio_null(zio_t *pio, spa_t *spa, vdev_t *vd, 456b24ab676SJeff Bonwick zio_done_func_t *done, void *private, enum zio_flag flags); 457fa9e4066Sahrens 458fa9e4066Sahrens extern zio_t *zio_root(spa_t *spa, 459b24ab676SJeff Bonwick zio_done_func_t *done, void *private, enum zio_flag flags); 460fa9e4066Sahrens 461088f3894Sahrens extern zio_t *zio_read(zio_t *pio, spa_t *spa, const blkptr_t *bp, void *data, 462fa9e4066Sahrens uint64_t size, zio_done_func_t *done, void *private, 4637802d7bfSMatthew Ahrens zio_priority_t priority, enum zio_flag flags, const zbookmark_phys_t *zb); 464fa9e4066Sahrens 465e14bb325SJeff Bonwick extern zio_t *zio_write(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, 466b24ab676SJeff Bonwick void *data, uint64_t size, const zio_prop_t *zp, 46769962b56SMatthew Ahrens zio_done_func_t *ready, zio_done_func_t *physdone, zio_done_func_t *done, 46869962b56SMatthew Ahrens void *private, 4697802d7bfSMatthew Ahrens zio_priority_t priority, enum zio_flag flags, const zbookmark_phys_t *zb); 470fa9e4066Sahrens 471e14bb325SJeff Bonwick extern zio_t *zio_rewrite(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, 472e14bb325SJeff Bonwick void *data, uint64_t size, zio_done_func_t *done, void *private, 4737802d7bfSMatthew Ahrens zio_priority_t priority, enum zio_flag flags, zbookmark_phys_t *zb); 474fa9e4066Sahrens 47580901aeaSGeorge Wilson extern void zio_write_override(zio_t *zio, blkptr_t *bp, int copies, 47680901aeaSGeorge Wilson boolean_t nopwrite); 47782c9918fSTim Haley 478b24ab676SJeff Bonwick extern void zio_free(spa_t *spa, uint64_t txg, const blkptr_t *bp); 479fa9e4066Sahrens 480b24ab676SJeff Bonwick extern zio_t *zio_claim(zio_t *pio, spa_t *spa, uint64_t txg, 481b24ab676SJeff Bonwick const blkptr_t *bp, 482b24ab676SJeff Bonwick zio_done_func_t *done, void *private, enum zio_flag flags); 483fa9e4066Sahrens 484fa9e4066Sahrens extern zio_t *zio_ioctl(zio_t *pio, spa_t *spa, vdev_t *vd, int cmd, 48569962b56SMatthew Ahrens zio_done_func_t *done, void *private, enum zio_flag flags); 486fa9e4066Sahrens 487fa9e4066Sahrens extern zio_t *zio_read_phys(zio_t *pio, vdev_t *vd, uint64_t offset, 488fa9e4066Sahrens uint64_t size, void *data, int checksum, 48969962b56SMatthew Ahrens zio_done_func_t *done, void *private, zio_priority_t priority, 49069962b56SMatthew Ahrens enum zio_flag flags, boolean_t labels); 491fa9e4066Sahrens 492fa9e4066Sahrens extern zio_t *zio_write_phys(zio_t *pio, vdev_t *vd, uint64_t offset, 493fa9e4066Sahrens uint64_t size, void *data, int checksum, 49469962b56SMatthew Ahrens zio_done_func_t *done, void *private, zio_priority_t priority, 49569962b56SMatthew Ahrens enum zio_flag flags, boolean_t labels); 496fa9e4066Sahrens 497b24ab676SJeff Bonwick extern zio_t *zio_free_sync(zio_t *pio, spa_t *spa, uint64_t txg, 498b24ab676SJeff Bonwick const blkptr_t *bp, enum zio_flag flags); 499b24ab676SJeff Bonwick 500b24ab676SJeff Bonwick extern int zio_alloc_zil(spa_t *spa, uint64_t txg, blkptr_t *new_bp, 501b24ab676SJeff Bonwick blkptr_t *old_bp, uint64_t size, boolean_t use_slog); 502b24ab676SJeff Bonwick extern void zio_free_zil(spa_t *spa, uint64_t txg, blkptr_t *bp); 50317f17c2dSbonwick extern void zio_flush(zio_t *zio, vdev_t *vd); 5046e1f5caaSNeil Perrin extern void zio_shrink(zio_t *zio, uint64_t size); 505fa9e4066Sahrens 506fa9e4066Sahrens extern int zio_wait(zio_t *zio); 507fa9e4066Sahrens extern void zio_nowait(zio_t *zio); 508e05725b1Sbonwick extern void zio_execute(zio_t *zio); 509e05725b1Sbonwick extern void zio_interrupt(zio_t *zio); 510*97e81309SPrakash Surya extern void zio_delay_init(zio_t *zio); 511*97e81309SPrakash Surya extern void zio_delay_interrupt(zio_t *zio); 512e05725b1Sbonwick 513a3f829aeSBill Moore extern zio_t *zio_walk_parents(zio_t *cio); 514a3f829aeSBill Moore extern zio_t *zio_walk_children(zio_t *pio); 515a3f829aeSBill Moore extern zio_t *zio_unique_parent(zio_t *cio); 516a3f829aeSBill Moore extern void zio_add_child(zio_t *pio, zio_t *cio); 517a3f829aeSBill Moore 518fa9e4066Sahrens extern void *zio_buf_alloc(size_t size); 519fa9e4066Sahrens extern void zio_buf_free(void *buf, size_t size); 520ad23a2dbSjohansen extern void *zio_data_buf_alloc(size_t size); 521ad23a2dbSjohansen extern void zio_data_buf_free(void *buf, size_t size); 522fa9e4066Sahrens 5230a4e9518Sgw extern void zio_resubmit_stage_async(void *); 524fa9e4066Sahrens 525fa9e4066Sahrens extern zio_t *zio_vdev_child_io(zio_t *zio, blkptr_t *bp, vdev_t *vd, 52669962b56SMatthew Ahrens uint64_t offset, void *data, uint64_t size, int type, 52769962b56SMatthew Ahrens zio_priority_t priority, enum zio_flag flags, 52869962b56SMatthew Ahrens zio_done_func_t *done, void *private); 529fa9e4066Sahrens 530e14bb325SJeff Bonwick extern zio_t *zio_vdev_delegated_io(vdev_t *vd, uint64_t offset, 53169962b56SMatthew Ahrens void *data, uint64_t size, int type, zio_priority_t priority, 532b24ab676SJeff Bonwick enum zio_flag flags, zio_done_func_t *done, void *private); 533e14bb325SJeff Bonwick 534fa9e4066Sahrens extern void zio_vdev_io_bypass(zio_t *zio); 535fa9e4066Sahrens extern void zio_vdev_io_reissue(zio_t *zio); 536fa9e4066Sahrens extern void zio_vdev_io_redone(zio_t *zio); 537fa9e4066Sahrens 538fa9e4066Sahrens extern void zio_checksum_verified(zio_t *zio); 539e14bb325SJeff Bonwick extern int zio_worst_error(int e1, int e2); 540fa9e4066Sahrens 541b24ab676SJeff Bonwick extern enum zio_checksum zio_checksum_select(enum zio_checksum child, 542b24ab676SJeff Bonwick enum zio_checksum parent); 543b24ab676SJeff Bonwick extern enum zio_checksum zio_checksum_dedup_select(spa_t *spa, 544b24ab676SJeff Bonwick enum zio_checksum child, enum zio_checksum parent); 545db1741f5SJustin T. Gibbs extern enum zio_compress zio_compress_select(spa_t *spa, 546db1741f5SJustin T. Gibbs enum zio_compress child, enum zio_compress parent); 547fa9e4066Sahrens 548e14bb325SJeff Bonwick extern void zio_suspend(spa_t *spa, zio_t *zio); 54954d692b7SGeorge Wilson extern int zio_resume(spa_t *spa); 550e14bb325SJeff Bonwick extern void zio_resume_wait(spa_t *spa); 551ea8dc4b6Seschrock 552fa9e4066Sahrens /* 553fa9e4066Sahrens * Initial setup and teardown. 554fa9e4066Sahrens */ 555fa9e4066Sahrens extern void zio_init(void); 556fa9e4066Sahrens extern void zio_fini(void); 557fa9e4066Sahrens 558ea8dc4b6Seschrock /* 559ea8dc4b6Seschrock * Fault injection 560ea8dc4b6Seschrock */ 561ea8dc4b6Seschrock struct zinject_record; 562ea8dc4b6Seschrock extern uint32_t zio_injection_enabled; 563ea8dc4b6Seschrock extern int zio_inject_fault(char *name, int flags, int *id, 564ea8dc4b6Seschrock struct zinject_record *record); 565ea8dc4b6Seschrock extern int zio_inject_list_next(int *id, char *name, size_t buflen, 566ea8dc4b6Seschrock struct zinject_record *record); 567ea8dc4b6Seschrock extern int zio_clear_fault(int id); 5681195e687SMark J Musante extern void zio_handle_panic_injection(spa_t *spa, char *tag, uint64_t type); 569ea8dc4b6Seschrock extern int zio_handle_fault_injection(zio_t *zio, int error); 5708956713aSEric Schrock extern int zio_handle_device_injection(vdev_t *vd, zio_t *zio, int error); 57121bf64a7Sgw extern int zio_handle_label_injection(zio_t *zio, int error); 572468c413aSTim Haley extern void zio_handle_ignored_writes(zio_t *zio); 573*97e81309SPrakash Surya extern hrtime_t zio_handle_io_delay(zio_t *zio); 574ea8dc4b6Seschrock 57522fe2c88SJonathan Adams /* 57622fe2c88SJonathan Adams * Checksum ereport functions 57722fe2c88SJonathan Adams */ 57822fe2c88SJonathan Adams extern void zfs_ereport_start_checksum(spa_t *spa, vdev_t *vd, struct zio *zio, 57922fe2c88SJonathan Adams uint64_t offset, uint64_t length, void *arg, struct zio_bad_cksum *info); 58022fe2c88SJonathan Adams extern void zfs_ereport_finish_checksum(zio_cksum_report_t *report, 58122fe2c88SJonathan Adams const void *good_data, const void *bad_data, boolean_t drop_if_identical); 58222fe2c88SJonathan Adams 58322fe2c88SJonathan Adams extern void zfs_ereport_send_interim_checksum(zio_cksum_report_t *report); 58422fe2c88SJonathan Adams extern void zfs_ereport_free_checksum(zio_cksum_report_t *report); 58522fe2c88SJonathan Adams 58622fe2c88SJonathan Adams /* If we have the good data in hand, this function can be used */ 58722fe2c88SJonathan Adams extern void zfs_ereport_post_checksum(spa_t *spa, vdev_t *vd, 58822fe2c88SJonathan Adams struct zio *zio, uint64_t offset, uint64_t length, 58922fe2c88SJonathan Adams const void *good_data, const void *bad_data, struct zio_bad_cksum *info); 59022fe2c88SJonathan Adams 591468c413aSTim Haley /* Called from spa_sync(), but primarily an injection handler */ 592468c413aSTim Haley extern void spa_handle_ignored_writes(spa_t *spa); 593468c413aSTim Haley 5947802d7bfSMatthew Ahrens /* zbookmark_phys functions */ 595a2cdcdd2SPaul Dagnelie boolean_t zbookmark_subtree_completed(const struct dnode_phys *dnp, 596a2cdcdd2SPaul Dagnelie const zbookmark_phys_t *subtree_root, const zbookmark_phys_t *last_block); 597a2cdcdd2SPaul Dagnelie int zbookmark_compare(uint16_t dbss1, uint8_t ibs1, uint16_t dbss2, 598a2cdcdd2SPaul Dagnelie uint8_t ibs2, const zbookmark_phys_t *zb1, const zbookmark_phys_t *zb2); 599ad135b5dSChristopher Siden 600fa9e4066Sahrens #ifdef __cplusplus 601fa9e4066Sahrens } 602fa9e4066Sahrens #endif 603fa9e4066Sahrens 604fa9e4066Sahrens #endif /* _ZIO_H */ 605