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. 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, 176*0f7643c7SGeorge Wilson ZIO_FLAG_IO_ALLOCATING = 1 << 14, 177b24ab676SJeff Bonwick 178b24ab676SJeff Bonwick #define ZIO_FLAG_DDT_INHERIT (ZIO_FLAG_IO_RETRY - 1) 179b24ab676SJeff Bonwick #define ZIO_FLAG_GANG_INHERIT (ZIO_FLAG_IO_RETRY - 1) 180b24ab676SJeff Bonwick 181b24ab676SJeff Bonwick /* 182b24ab676SJeff Bonwick * Flags inherited by vdev children. 183b24ab676SJeff Bonwick */ 184*0f7643c7SGeorge Wilson ZIO_FLAG_IO_RETRY = 1 << 15, /* must be first for INHERIT */ 185*0f7643c7SGeorge Wilson ZIO_FLAG_PROBE = 1 << 16, 186*0f7643c7SGeorge Wilson ZIO_FLAG_TRYHARD = 1 << 17, 187*0f7643c7SGeorge Wilson ZIO_FLAG_OPTIONAL = 1 << 18, 188b24ab676SJeff Bonwick 189b24ab676SJeff Bonwick #define ZIO_FLAG_VDEV_INHERIT (ZIO_FLAG_DONT_QUEUE - 1) 190b24ab676SJeff Bonwick 191b24ab676SJeff Bonwick /* 192b24ab676SJeff Bonwick * Flags not inherited by any children. 193b24ab676SJeff Bonwick */ 194*0f7643c7SGeorge Wilson ZIO_FLAG_DONT_QUEUE = 1 << 19, /* must be first for INHERIT */ 195*0f7643c7SGeorge Wilson ZIO_FLAG_DONT_PROPAGATE = 1 << 20, 196*0f7643c7SGeorge Wilson ZIO_FLAG_IO_BYPASS = 1 << 21, 197*0f7643c7SGeorge Wilson ZIO_FLAG_IO_REWRITE = 1 << 22, 198*0f7643c7SGeorge Wilson ZIO_FLAG_RAW = 1 << 23, 199*0f7643c7SGeorge Wilson ZIO_FLAG_GANG_CHILD = 1 << 24, 200*0f7643c7SGeorge Wilson ZIO_FLAG_DDT_CHILD = 1 << 25, 201*0f7643c7SGeorge Wilson ZIO_FLAG_GODFATHER = 1 << 26, 202*0f7643c7SGeorge Wilson ZIO_FLAG_NOPWRITE = 1 << 27, 203*0f7643c7SGeorge Wilson ZIO_FLAG_REEXECUTED = 1 << 28, 204*0f7643c7SGeorge Wilson ZIO_FLAG_DELEGATED = 1 << 29, 205b24ab676SJeff Bonwick }; 206b24ab676SJeff Bonwick 207b24ab676SJeff Bonwick #define ZIO_FLAG_MUSTSUCCEED 0 208b24ab676SJeff Bonwick 209b24ab676SJeff Bonwick #define ZIO_DDT_CHILD_FLAGS(zio) \ 210b24ab676SJeff Bonwick (((zio)->io_flags & ZIO_FLAG_DDT_INHERIT) | \ 211b24ab676SJeff Bonwick ZIO_FLAG_DDT_CHILD | ZIO_FLAG_CANFAIL) 212b24ab676SJeff Bonwick 213e14bb325SJeff Bonwick #define ZIO_GANG_CHILD_FLAGS(zio) \ 214e14bb325SJeff Bonwick (((zio)->io_flags & ZIO_FLAG_GANG_INHERIT) | \ 215e14bb325SJeff Bonwick ZIO_FLAG_GANG_CHILD | ZIO_FLAG_CANFAIL) 216e14bb325SJeff Bonwick 217b24ab676SJeff Bonwick #define ZIO_VDEV_CHILD_FLAGS(zio) \ 218b24ab676SJeff Bonwick (((zio)->io_flags & ZIO_FLAG_VDEV_INHERIT) | \ 219b24ab676SJeff Bonwick ZIO_FLAG_CANFAIL) 220b24ab676SJeff Bonwick 221e14bb325SJeff Bonwick enum zio_child { 222e14bb325SJeff Bonwick ZIO_CHILD_VDEV = 0, 223e14bb325SJeff Bonwick ZIO_CHILD_GANG, 224b24ab676SJeff Bonwick ZIO_CHILD_DDT, 225e14bb325SJeff Bonwick ZIO_CHILD_LOGICAL, 226e14bb325SJeff Bonwick ZIO_CHILD_TYPES 227e14bb325SJeff Bonwick }; 228e14bb325SJeff Bonwick 229e14bb325SJeff Bonwick enum zio_wait_type { 230e14bb325SJeff Bonwick ZIO_WAIT_READY = 0, 231e14bb325SJeff Bonwick ZIO_WAIT_DONE, 232e14bb325SJeff Bonwick ZIO_WAIT_TYPES 233e14bb325SJeff Bonwick }; 234e14bb325SJeff Bonwick 235fa9e4066Sahrens /* 236e7cbe64fSgw * We'll take the unused errnos, 'EBADE' and 'EBADR' (from the Convergent 237e7cbe64fSgw * graveyard) to indicate checksum errors and fragmentation. 238fa9e4066Sahrens */ 239fa9e4066Sahrens #define ECKSUM EBADE 240e7cbe64fSgw #define EFRAGS EBADR 241fa9e4066Sahrens 242fa9e4066Sahrens typedef void zio_done_func_t(zio_t *zio); 243fa9e4066Sahrens 244*0f7643c7SGeorge Wilson extern boolean_t zio_dva_throttle_enabled; 24569962b56SMatthew Ahrens extern const char *zio_type_name[ZIO_TYPES]; 246fa9e4066Sahrens 247ea8dc4b6Seschrock /* 248ea8dc4b6Seschrock * A bookmark is a four-tuple <objset, object, level, blkid> that uniquely 249ea8dc4b6Seschrock * identifies any block in the pool. By convention, the meta-objset (MOS) 250b24ab676SJeff Bonwick * is objset 0, and the meta-dnode is object 0. This covers all blocks 251b24ab676SJeff Bonwick * except root blocks and ZIL blocks, which are defined as follows: 252ea8dc4b6Seschrock * 253b24ab676SJeff Bonwick * Root blocks (objset_phys_t) are object 0, level -1: <objset, 0, -1, 0>. 254b24ab676SJeff Bonwick * ZIL blocks are bookmarked <objset, 0, -2, blkid == ZIL sequence number>. 255b24ab676SJeff Bonwick * dmu_sync()ed ZIL data blocks are bookmarked <objset, object, -2, blkid>. 256a2cdcdd2SPaul Dagnelie * dnode visit bookmarks are <objset, object id of dnode, -3, 0>. 257ea8dc4b6Seschrock * 258b24ab676SJeff Bonwick * Note: this structure is called a bookmark because its original purpose 259b24ab676SJeff Bonwick * was to remember where to resume a pool-wide traverse. 260ea8dc4b6Seschrock * 2617802d7bfSMatthew Ahrens * Note: this structure is passed between userland and the kernel, and is 2627802d7bfSMatthew Ahrens * stored on disk (by virtue of being incorporated into other on-disk 2637802d7bfSMatthew Ahrens * structures, e.g. dsl_scan_phys_t). 264ea8dc4b6Seschrock */ 2657802d7bfSMatthew Ahrens typedef struct zbookmark_phys { 266ea8dc4b6Seschrock uint64_t zb_objset; 267ea8dc4b6Seschrock uint64_t zb_object; 268ea8dc4b6Seschrock int64_t zb_level; 269ea8dc4b6Seschrock uint64_t zb_blkid; 2707802d7bfSMatthew Ahrens } zbookmark_phys_t; 271ea8dc4b6Seschrock 272b24ab676SJeff Bonwick #define SET_BOOKMARK(zb, objset, object, level, blkid) \ 273b24ab676SJeff Bonwick { \ 274b24ab676SJeff Bonwick (zb)->zb_objset = objset; \ 275b24ab676SJeff Bonwick (zb)->zb_object = object; \ 276b24ab676SJeff Bonwick (zb)->zb_level = level; \ 277b24ab676SJeff Bonwick (zb)->zb_blkid = blkid; \ 278b24ab676SJeff Bonwick } 279b24ab676SJeff Bonwick 280b24ab676SJeff Bonwick #define ZB_DESTROYED_OBJSET (-1ULL) 281b24ab676SJeff Bonwick 282b24ab676SJeff Bonwick #define ZB_ROOT_OBJECT (0ULL) 283b24ab676SJeff Bonwick #define ZB_ROOT_LEVEL (-1LL) 284b24ab676SJeff Bonwick #define ZB_ROOT_BLKID (0ULL) 285b24ab676SJeff Bonwick 286b24ab676SJeff Bonwick #define ZB_ZIL_OBJECT (0ULL) 287b24ab676SJeff Bonwick #define ZB_ZIL_LEVEL (-2LL) 288b24ab676SJeff Bonwick 289a2cdcdd2SPaul Dagnelie #define ZB_DNODE_LEVEL (-3LL) 290a2cdcdd2SPaul Dagnelie #define ZB_DNODE_BLKID (0ULL) 291a2cdcdd2SPaul Dagnelie 292ad135b5dSChristopher Siden #define ZB_IS_ZERO(zb) \ 293ad135b5dSChristopher Siden ((zb)->zb_objset == 0 && (zb)->zb_object == 0 && \ 294ad135b5dSChristopher Siden (zb)->zb_level == 0 && (zb)->zb_blkid == 0) 295ad135b5dSChristopher Siden #define ZB_IS_ROOT(zb) \ 296ad135b5dSChristopher Siden ((zb)->zb_object == ZB_ROOT_OBJECT && \ 297ad135b5dSChristopher Siden (zb)->zb_level == ZB_ROOT_LEVEL && \ 298ad135b5dSChristopher Siden (zb)->zb_blkid == ZB_ROOT_BLKID) 299ad135b5dSChristopher Siden 300e14bb325SJeff Bonwick typedef struct zio_prop { 301e14bb325SJeff Bonwick enum zio_checksum zp_checksum; 302e14bb325SJeff Bonwick enum zio_compress zp_compress; 303e14bb325SJeff Bonwick dmu_object_type_t zp_type; 304e14bb325SJeff Bonwick uint8_t zp_level; 305b24ab676SJeff Bonwick uint8_t zp_copies; 30680901aeaSGeorge Wilson boolean_t zp_dedup; 30780901aeaSGeorge Wilson boolean_t zp_dedup_verify; 30880901aeaSGeorge Wilson boolean_t zp_nopwrite; 309e14bb325SJeff Bonwick } zio_prop_t; 310e14bb325SJeff Bonwick 31122fe2c88SJonathan Adams typedef struct zio_cksum_report zio_cksum_report_t; 31222fe2c88SJonathan Adams 31322fe2c88SJonathan Adams typedef void zio_cksum_finish_f(zio_cksum_report_t *rep, 31422fe2c88SJonathan Adams const void *good_data); 31522fe2c88SJonathan Adams typedef void zio_cksum_free_f(void *cbdata, size_t size); 31622fe2c88SJonathan Adams 31722fe2c88SJonathan Adams struct zio_bad_cksum; /* defined in zio_checksum.h */ 318ad135b5dSChristopher Siden struct dnode_phys; 31922fe2c88SJonathan Adams 32022fe2c88SJonathan Adams struct zio_cksum_report { 32122fe2c88SJonathan Adams struct zio_cksum_report *zcr_next; 32222fe2c88SJonathan Adams nvlist_t *zcr_ereport; 32322fe2c88SJonathan Adams nvlist_t *zcr_detector; 32422fe2c88SJonathan Adams void *zcr_cbdata; 32522fe2c88SJonathan Adams size_t zcr_cbinfo; /* passed to zcr_free() */ 326b24ab676SJeff Bonwick uint64_t zcr_align; 32722fe2c88SJonathan Adams uint64_t zcr_length; 32822fe2c88SJonathan Adams zio_cksum_finish_f *zcr_finish; 32922fe2c88SJonathan Adams zio_cksum_free_f *zcr_free; 33022fe2c88SJonathan Adams 33122fe2c88SJonathan Adams /* internal use only */ 33222fe2c88SJonathan Adams struct zio_bad_cksum *zcr_ckinfo; /* information from failure */ 33322fe2c88SJonathan Adams }; 33422fe2c88SJonathan Adams 33522fe2c88SJonathan Adams typedef void zio_vsd_cksum_report_f(zio_t *zio, zio_cksum_report_t *zcr, 33622fe2c88SJonathan Adams void *arg); 33722fe2c88SJonathan Adams 33822fe2c88SJonathan Adams zio_vsd_cksum_report_f zio_vsd_default_cksum_report; 33922fe2c88SJonathan Adams 34022fe2c88SJonathan Adams typedef struct zio_vsd_ops { 34122fe2c88SJonathan Adams zio_done_func_t *vsd_free; 34222fe2c88SJonathan Adams zio_vsd_cksum_report_f *vsd_cksum_report; 34322fe2c88SJonathan Adams } zio_vsd_ops_t; 34422fe2c88SJonathan Adams 345e14bb325SJeff Bonwick typedef struct zio_gang_node { 346e14bb325SJeff Bonwick zio_gbh_phys_t *gn_gbh; 347e14bb325SJeff Bonwick struct zio_gang_node *gn_child[SPA_GBH_NBLKPTRS]; 348e14bb325SJeff Bonwick } zio_gang_node_t; 349e14bb325SJeff Bonwick 350e14bb325SJeff Bonwick typedef zio_t *zio_gang_issue_func_t(zio_t *zio, blkptr_t *bp, 351e14bb325SJeff Bonwick zio_gang_node_t *gn, void *data); 352e14bb325SJeff Bonwick 353e14bb325SJeff Bonwick typedef void zio_transform_func_t(zio_t *zio, void *data, uint64_t size); 354e14bb325SJeff Bonwick 355e14bb325SJeff Bonwick typedef struct zio_transform { 356e14bb325SJeff Bonwick void *zt_orig_data; 357e14bb325SJeff Bonwick uint64_t zt_orig_size; 358e14bb325SJeff Bonwick uint64_t zt_bufsize; 359e14bb325SJeff Bonwick zio_transform_func_t *zt_transform; 360e14bb325SJeff Bonwick struct zio_transform *zt_next; 361e14bb325SJeff Bonwick } zio_transform_t; 362e14bb325SJeff Bonwick 363e14bb325SJeff Bonwick typedef int zio_pipe_stage_t(zio_t *zio); 364e14bb325SJeff Bonwick 365e14bb325SJeff Bonwick /* 366e14bb325SJeff Bonwick * The io_reexecute flags are distinct from io_flags because the child must 367e14bb325SJeff Bonwick * be able to propagate them to the parent. The normal io_flags are local 368e14bb325SJeff Bonwick * to the zio, not protected by any lock, and not modifiable by children; 369e14bb325SJeff Bonwick * the reexecute flags are protected by io_lock, modifiable by children, 370e14bb325SJeff Bonwick * and always propagated -- even when ZIO_FLAG_DONT_PROPAGATE is set. 371e14bb325SJeff Bonwick */ 372e14bb325SJeff Bonwick #define ZIO_REEXECUTE_NOW 0x01 373e14bb325SJeff Bonwick #define ZIO_REEXECUTE_SUSPEND 0x02 374e14bb325SJeff Bonwick 375a3f829aeSBill Moore typedef struct zio_link { 376a3f829aeSBill Moore zio_t *zl_parent; 377a3f829aeSBill Moore zio_t *zl_child; 378a3f829aeSBill Moore list_node_t zl_parent_node; 379a3f829aeSBill Moore list_node_t zl_child_node; 380a3f829aeSBill Moore } zio_link_t; 381a3f829aeSBill Moore 382fa9e4066Sahrens struct zio { 383fa9e4066Sahrens /* Core information about this I/O */ 3847802d7bfSMatthew Ahrens zbookmark_phys_t io_bookmark; 385e14bb325SJeff Bonwick zio_prop_t io_prop; 386e14bb325SJeff Bonwick zio_type_t io_type; 387e14bb325SJeff Bonwick enum zio_child io_child_type; 388e14bb325SJeff Bonwick int io_cmd; 38969962b56SMatthew Ahrens zio_priority_t io_priority; 390e14bb325SJeff Bonwick uint8_t io_reexecute; 391a3f829aeSBill Moore uint8_t io_state[ZIO_WAIT_TYPES]; 392fa9e4066Sahrens uint64_t io_txg; 393e14bb325SJeff Bonwick spa_t *io_spa; 394fa9e4066Sahrens blkptr_t *io_bp; 395b24ab676SJeff Bonwick blkptr_t *io_bp_override; 396fa9e4066Sahrens blkptr_t io_bp_copy; 397a3f829aeSBill Moore list_t io_parent_list; 398a3f829aeSBill Moore list_t io_child_list; 399ea8dc4b6Seschrock zio_t *io_logical; 400e14bb325SJeff Bonwick zio_transform_t *io_transform_stack; 401fa9e4066Sahrens 402fa9e4066Sahrens /* Callback info */ 403c717a561Smaybee zio_done_func_t *io_ready; 4048df0bcf0SPaul Dagnelie zio_done_func_t *io_children_ready; 40569962b56SMatthew Ahrens zio_done_func_t *io_physdone; 406fa9e4066Sahrens zio_done_func_t *io_done; 407fa9e4066Sahrens void *io_private; 408b24ab676SJeff Bonwick int64_t io_prev_space_delta; /* DMU private */ 409fa9e4066Sahrens blkptr_t io_bp_orig; 410fa9e4066Sahrens 411fa9e4066Sahrens /* Data represented by this I/O */ 412fa9e4066Sahrens void *io_data; 413b24ab676SJeff Bonwick void *io_orig_data; 414fa9e4066Sahrens uint64_t io_size; 415b24ab676SJeff Bonwick uint64_t io_orig_size; 416fa9e4066Sahrens 417fa9e4066Sahrens /* Stuff for the vdev stack */ 418fa9e4066Sahrens vdev_t *io_vd; 419fa9e4066Sahrens void *io_vsd; 42022fe2c88SJonathan Adams const zio_vsd_ops_t *io_vsd_ops; 42122fe2c88SJonathan Adams 422fa9e4066Sahrens uint64_t io_offset; 423c55e05cbSMatthew Ahrens hrtime_t io_timestamp; 424*0f7643c7SGeorge Wilson hrtime_t io_queued_timestamp; 42597e81309SPrakash Surya hrtime_t io_target_timestamp; 42669962b56SMatthew Ahrens avl_node_t io_queue_node; 427fe319232SJustin T. Gibbs avl_node_t io_offset_node; 428*0f7643c7SGeorge Wilson avl_node_t io_alloc_node; 429fa9e4066Sahrens 430fa9e4066Sahrens /* Internal pipeline state */ 431b24ab676SJeff Bonwick enum zio_flag io_flags; 432b24ab676SJeff Bonwick enum zio_stage io_stage; 433b24ab676SJeff Bonwick enum zio_stage io_pipeline; 434b24ab676SJeff Bonwick enum zio_flag io_orig_flags; 435b24ab676SJeff Bonwick enum zio_stage io_orig_stage; 436b24ab676SJeff Bonwick enum zio_stage io_orig_pipeline; 437*0f7643c7SGeorge Wilson enum zio_stage io_pipeline_trace; 438e14bb325SJeff Bonwick int io_error; 439e14bb325SJeff Bonwick int io_child_error[ZIO_CHILD_TYPES]; 440e14bb325SJeff Bonwick uint64_t io_children[ZIO_CHILD_TYPES][ZIO_WAIT_TYPES]; 441b24ab676SJeff Bonwick uint64_t io_child_count; 44269962b56SMatthew Ahrens uint64_t io_phys_children; 443b24ab676SJeff Bonwick uint64_t io_parent_count; 444e14bb325SJeff Bonwick uint64_t *io_stall; 445f5383399SBill Moore zio_t *io_gang_leader; 446e14bb325SJeff Bonwick zio_gang_node_t *io_gang_tree; 447e14bb325SJeff Bonwick void *io_executor; 448fa9e4066Sahrens void *io_waiter; 449fa9e4066Sahrens kmutex_t io_lock; 450fa9e4066Sahrens kcondvar_t io_cv; 451ea8dc4b6Seschrock 452ea8dc4b6Seschrock /* FMA state */ 45322fe2c88SJonathan Adams zio_cksum_report_t *io_cksum_report; 454ea8dc4b6Seschrock uint64_t io_ena; 4555aeb9474SGarrett D'Amore 4565aeb9474SGarrett D'Amore /* Taskq dispatching state */ 4575aeb9474SGarrett D'Amore taskq_ent_t io_tqent; 458fa9e4066Sahrens }; 459fa9e4066Sahrens 460*0f7643c7SGeorge Wilson extern int zio_timestamp_compare(const void *, const void *); 461*0f7643c7SGeorge Wilson 462a3f829aeSBill Moore extern zio_t *zio_null(zio_t *pio, spa_t *spa, vdev_t *vd, 463b24ab676SJeff Bonwick zio_done_func_t *done, void *private, enum zio_flag flags); 464fa9e4066Sahrens 465fa9e4066Sahrens extern zio_t *zio_root(spa_t *spa, 466b24ab676SJeff Bonwick zio_done_func_t *done, void *private, enum zio_flag flags); 467fa9e4066Sahrens 468088f3894Sahrens extern zio_t *zio_read(zio_t *pio, spa_t *spa, const blkptr_t *bp, void *data, 469fa9e4066Sahrens uint64_t size, zio_done_func_t *done, void *private, 4707802d7bfSMatthew Ahrens zio_priority_t priority, enum zio_flag flags, const zbookmark_phys_t *zb); 471fa9e4066Sahrens 472e14bb325SJeff Bonwick extern zio_t *zio_write(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, 473b24ab676SJeff Bonwick void *data, uint64_t size, const zio_prop_t *zp, 4748df0bcf0SPaul Dagnelie zio_done_func_t *ready, zio_done_func_t *children_ready, 4758df0bcf0SPaul Dagnelie zio_done_func_t *physdone, zio_done_func_t *done, 4768df0bcf0SPaul Dagnelie void *private, zio_priority_t priority, enum zio_flag flags, 4778df0bcf0SPaul Dagnelie const zbookmark_phys_t *zb); 478fa9e4066Sahrens 479e14bb325SJeff Bonwick extern zio_t *zio_rewrite(zio_t *pio, spa_t *spa, uint64_t txg, blkptr_t *bp, 480e14bb325SJeff Bonwick void *data, uint64_t size, zio_done_func_t *done, void *private, 4817802d7bfSMatthew Ahrens zio_priority_t priority, enum zio_flag flags, zbookmark_phys_t *zb); 482fa9e4066Sahrens 48380901aeaSGeorge Wilson extern void zio_write_override(zio_t *zio, blkptr_t *bp, int copies, 48480901aeaSGeorge Wilson boolean_t nopwrite); 48582c9918fSTim Haley 486b24ab676SJeff Bonwick extern void zio_free(spa_t *spa, uint64_t txg, const blkptr_t *bp); 487fa9e4066Sahrens 488b24ab676SJeff Bonwick extern zio_t *zio_claim(zio_t *pio, spa_t *spa, uint64_t txg, 489b24ab676SJeff Bonwick const blkptr_t *bp, 490b24ab676SJeff Bonwick zio_done_func_t *done, void *private, enum zio_flag flags); 491fa9e4066Sahrens 492fa9e4066Sahrens extern zio_t *zio_ioctl(zio_t *pio, spa_t *spa, vdev_t *vd, int cmd, 49369962b56SMatthew Ahrens zio_done_func_t *done, void *private, enum zio_flag flags); 494fa9e4066Sahrens 495fa9e4066Sahrens extern zio_t *zio_read_phys(zio_t *pio, vdev_t *vd, uint64_t offset, 496fa9e4066Sahrens uint64_t size, void *data, int checksum, 49769962b56SMatthew Ahrens zio_done_func_t *done, void *private, zio_priority_t priority, 49869962b56SMatthew Ahrens enum zio_flag flags, boolean_t labels); 499fa9e4066Sahrens 500fa9e4066Sahrens extern zio_t *zio_write_phys(zio_t *pio, vdev_t *vd, uint64_t offset, 501fa9e4066Sahrens uint64_t size, void *data, int checksum, 50269962b56SMatthew Ahrens zio_done_func_t *done, void *private, zio_priority_t priority, 50369962b56SMatthew Ahrens enum zio_flag flags, boolean_t labels); 504fa9e4066Sahrens 505b24ab676SJeff Bonwick extern zio_t *zio_free_sync(zio_t *pio, spa_t *spa, uint64_t txg, 506b24ab676SJeff Bonwick const blkptr_t *bp, enum zio_flag flags); 507b24ab676SJeff Bonwick 508b24ab676SJeff Bonwick extern int zio_alloc_zil(spa_t *spa, uint64_t txg, blkptr_t *new_bp, 509b24ab676SJeff Bonwick blkptr_t *old_bp, uint64_t size, boolean_t use_slog); 510b24ab676SJeff Bonwick extern void zio_free_zil(spa_t *spa, uint64_t txg, blkptr_t *bp); 51117f17c2dSbonwick extern void zio_flush(zio_t *zio, vdev_t *vd); 5126e1f5caaSNeil Perrin extern void zio_shrink(zio_t *zio, uint64_t size); 513fa9e4066Sahrens 514fa9e4066Sahrens extern int zio_wait(zio_t *zio); 515fa9e4066Sahrens extern void zio_nowait(zio_t *zio); 516e05725b1Sbonwick extern void zio_execute(zio_t *zio); 517e05725b1Sbonwick extern void zio_interrupt(zio_t *zio); 51897e81309SPrakash Surya extern void zio_delay_init(zio_t *zio); 51997e81309SPrakash Surya extern void zio_delay_interrupt(zio_t *zio); 520e05725b1Sbonwick 521*0f7643c7SGeorge Wilson extern zio_t *zio_walk_parents(zio_t *cio, zio_link_t **); 522*0f7643c7SGeorge Wilson extern zio_t *zio_walk_children(zio_t *pio, zio_link_t **); 523a3f829aeSBill Moore extern zio_t *zio_unique_parent(zio_t *cio); 524a3f829aeSBill Moore extern void zio_add_child(zio_t *pio, zio_t *cio); 525a3f829aeSBill Moore 526fa9e4066Sahrens extern void *zio_buf_alloc(size_t size); 527fa9e4066Sahrens extern void zio_buf_free(void *buf, size_t size); 528ad23a2dbSjohansen extern void *zio_data_buf_alloc(size_t size); 529ad23a2dbSjohansen extern void zio_data_buf_free(void *buf, size_t size); 530fa9e4066Sahrens 531dcbf3bd6SGeorge Wilson extern void zio_push_transform(zio_t *zio, void *data, uint64_t size, 532dcbf3bd6SGeorge Wilson uint64_t bufsize, zio_transform_func_t *transform); 533dcbf3bd6SGeorge Wilson extern void zio_pop_transforms(zio_t *zio); 534dcbf3bd6SGeorge Wilson 5350a4e9518Sgw extern void zio_resubmit_stage_async(void *); 536fa9e4066Sahrens 537fa9e4066Sahrens extern zio_t *zio_vdev_child_io(zio_t *zio, blkptr_t *bp, vdev_t *vd, 53869962b56SMatthew Ahrens uint64_t offset, void *data, uint64_t size, int type, 53969962b56SMatthew Ahrens zio_priority_t priority, enum zio_flag flags, 54069962b56SMatthew Ahrens zio_done_func_t *done, void *private); 541fa9e4066Sahrens 542e14bb325SJeff Bonwick extern zio_t *zio_vdev_delegated_io(vdev_t *vd, uint64_t offset, 54369962b56SMatthew Ahrens void *data, uint64_t size, int type, zio_priority_t priority, 544b24ab676SJeff Bonwick enum zio_flag flags, zio_done_func_t *done, void *private); 545e14bb325SJeff Bonwick 546fa9e4066Sahrens extern void zio_vdev_io_bypass(zio_t *zio); 547fa9e4066Sahrens extern void zio_vdev_io_reissue(zio_t *zio); 548fa9e4066Sahrens extern void zio_vdev_io_redone(zio_t *zio); 549fa9e4066Sahrens 550fa9e4066Sahrens extern void zio_checksum_verified(zio_t *zio); 551e14bb325SJeff Bonwick extern int zio_worst_error(int e1, int e2); 552fa9e4066Sahrens 553b24ab676SJeff Bonwick extern enum zio_checksum zio_checksum_select(enum zio_checksum child, 554b24ab676SJeff Bonwick enum zio_checksum parent); 555b24ab676SJeff Bonwick extern enum zio_checksum zio_checksum_dedup_select(spa_t *spa, 556b24ab676SJeff Bonwick enum zio_checksum child, enum zio_checksum parent); 557db1741f5SJustin T. Gibbs extern enum zio_compress zio_compress_select(spa_t *spa, 558db1741f5SJustin T. Gibbs enum zio_compress child, enum zio_compress parent); 559fa9e4066Sahrens 560e14bb325SJeff Bonwick extern void zio_suspend(spa_t *spa, zio_t *zio); 56154d692b7SGeorge Wilson extern int zio_resume(spa_t *spa); 562e14bb325SJeff Bonwick extern void zio_resume_wait(spa_t *spa); 563ea8dc4b6Seschrock 564fa9e4066Sahrens /* 565fa9e4066Sahrens * Initial setup and teardown. 566fa9e4066Sahrens */ 567fa9e4066Sahrens extern void zio_init(void); 568fa9e4066Sahrens extern void zio_fini(void); 569fa9e4066Sahrens 570ea8dc4b6Seschrock /* 571ea8dc4b6Seschrock * Fault injection 572ea8dc4b6Seschrock */ 573ea8dc4b6Seschrock struct zinject_record; 574ea8dc4b6Seschrock extern uint32_t zio_injection_enabled; 575ea8dc4b6Seschrock extern int zio_inject_fault(char *name, int flags, int *id, 576ea8dc4b6Seschrock struct zinject_record *record); 577ea8dc4b6Seschrock extern int zio_inject_list_next(int *id, char *name, size_t buflen, 578ea8dc4b6Seschrock struct zinject_record *record); 579ea8dc4b6Seschrock extern int zio_clear_fault(int id); 5801195e687SMark J Musante extern void zio_handle_panic_injection(spa_t *spa, char *tag, uint64_t type); 581ea8dc4b6Seschrock extern int zio_handle_fault_injection(zio_t *zio, int error); 5828956713aSEric Schrock extern int zio_handle_device_injection(vdev_t *vd, zio_t *zio, int error); 58321bf64a7Sgw extern int zio_handle_label_injection(zio_t *zio, int error); 584468c413aSTim Haley extern void zio_handle_ignored_writes(zio_t *zio); 58597e81309SPrakash Surya extern hrtime_t zio_handle_io_delay(zio_t *zio); 586ea8dc4b6Seschrock 58722fe2c88SJonathan Adams /* 58822fe2c88SJonathan Adams * Checksum ereport functions 58922fe2c88SJonathan Adams */ 59022fe2c88SJonathan Adams extern void zfs_ereport_start_checksum(spa_t *spa, vdev_t *vd, struct zio *zio, 59122fe2c88SJonathan Adams uint64_t offset, uint64_t length, void *arg, struct zio_bad_cksum *info); 59222fe2c88SJonathan Adams extern void zfs_ereport_finish_checksum(zio_cksum_report_t *report, 59322fe2c88SJonathan Adams const void *good_data, const void *bad_data, boolean_t drop_if_identical); 59422fe2c88SJonathan Adams 59522fe2c88SJonathan Adams extern void zfs_ereport_send_interim_checksum(zio_cksum_report_t *report); 59622fe2c88SJonathan Adams extern void zfs_ereport_free_checksum(zio_cksum_report_t *report); 59722fe2c88SJonathan Adams 59822fe2c88SJonathan Adams /* If we have the good data in hand, this function can be used */ 59922fe2c88SJonathan Adams extern void zfs_ereport_post_checksum(spa_t *spa, vdev_t *vd, 60022fe2c88SJonathan Adams struct zio *zio, uint64_t offset, uint64_t length, 60122fe2c88SJonathan Adams const void *good_data, const void *bad_data, struct zio_bad_cksum *info); 60222fe2c88SJonathan Adams 603468c413aSTim Haley /* Called from spa_sync(), but primarily an injection handler */ 604468c413aSTim Haley extern void spa_handle_ignored_writes(spa_t *spa); 605468c413aSTim Haley 6067802d7bfSMatthew Ahrens /* zbookmark_phys functions */ 607a2cdcdd2SPaul Dagnelie boolean_t zbookmark_subtree_completed(const struct dnode_phys *dnp, 608a2cdcdd2SPaul Dagnelie const zbookmark_phys_t *subtree_root, const zbookmark_phys_t *last_block); 609a2cdcdd2SPaul Dagnelie int zbookmark_compare(uint16_t dbss1, uint8_t ibs1, uint16_t dbss2, 610a2cdcdd2SPaul Dagnelie uint8_t ibs2, const zbookmark_phys_t *zb1, const zbookmark_phys_t *zb2); 611ad135b5dSChristopher Siden 612fa9e4066Sahrens #ifdef __cplusplus 613fa9e4066Sahrens } 614fa9e4066Sahrens #endif 615fa9e4066Sahrens 616fa9e4066Sahrens #endif /* _ZIO_H */ 617