1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5436b2950Sperrin * Common Development and Distribution License (the "License"). 6436b2950Sperrin * 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 */ 21fa9e4066Sahrens /* 2255da60b9SMark J Musante * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23ce636f8bSMatthew Ahrens * Copyright (c) 2012 by Delphix. All rights reserved. 24fa9e4066Sahrens */ 25fa9e4066Sahrens 2655da60b9SMark J Musante /* Portions Copyright 2010 Robert Milkowski */ 2755da60b9SMark J Musante 28fa9e4066Sahrens #ifndef _SYS_ZIL_H 29fa9e4066Sahrens #define _SYS_ZIL_H 30fa9e4066Sahrens 31fa9e4066Sahrens #include <sys/types.h> 32fa9e4066Sahrens #include <sys/spa.h> 33fa9e4066Sahrens #include <sys/zio.h> 34fa9e4066Sahrens #include <sys/dmu.h> 35fa9e4066Sahrens 36fa9e4066Sahrens #ifdef __cplusplus 37fa9e4066Sahrens extern "C" { 38fa9e4066Sahrens #endif 39fa9e4066Sahrens 40fa9e4066Sahrens /* 41fa9e4066Sahrens * Intent log format: 42fa9e4066Sahrens * 43fa9e4066Sahrens * Each objset has its own intent log. The log header (zil_header_t) 44fa9e4066Sahrens * for objset N's intent log is kept in the Nth object of the SPA's 45fa9e4066Sahrens * intent_log objset. The log header points to a chain of log blocks, 46fa9e4066Sahrens * each of which contains log records (i.e., transactions) followed by 47fa9e4066Sahrens * a log block trailer (zil_trailer_t). The format of a log record 48fa9e4066Sahrens * depends on the record (or transaction) type, but all records begin 49fa9e4066Sahrens * with a common structure that defines the type, length, and txg. 50fa9e4066Sahrens */ 51fa9e4066Sahrens 52fa9e4066Sahrens /* 53fa9e4066Sahrens * Intent log header - this on disk structure holds fields to manage 54fa9e4066Sahrens * the log. All fields are 64 bit to easily handle cross architectures. 55fa9e4066Sahrens */ 56fa9e4066Sahrens typedef struct zil_header { 57fa9e4066Sahrens uint64_t zh_claim_txg; /* txg in which log blocks were claimed */ 58fa9e4066Sahrens uint64_t zh_replay_seq; /* highest replayed sequence number */ 59fa9e4066Sahrens blkptr_t zh_log; /* log chain */ 60b24ab676SJeff Bonwick uint64_t zh_claim_blk_seq; /* highest claimed block sequence number */ 613589c4f0SNeil Perrin uint64_t zh_flags; /* header flags */ 62b24ab676SJeff Bonwick uint64_t zh_claim_lr_seq; /* highest claimed lr sequence number */ 63b24ab676SJeff Bonwick uint64_t zh_pad[3]; 64fa9e4066Sahrens } zil_header_t; 65fa9e4066Sahrens 663589c4f0SNeil Perrin /* 673589c4f0SNeil Perrin * zh_flags bit settings 683589c4f0SNeil Perrin */ 69b24ab676SJeff Bonwick #define ZIL_REPLAY_NEEDED 0x1 /* replay needed - internal only */ 70b24ab676SJeff Bonwick #define ZIL_CLAIM_LR_SEQ_VALID 0x2 /* zh_claim_lr_seq field is valid */ 713589c4f0SNeil Perrin 72fa9e4066Sahrens /* 736e1f5caaSNeil Perrin * Log block chaining. 74fa9e4066Sahrens * 756e1f5caaSNeil Perrin * Log blocks are chained together. Originally they were chained at the 766e1f5caaSNeil Perrin * end of the block. For performance reasons the chain was moved to the 776e1f5caaSNeil Perrin * beginning of the block which allows writes for only the data being used. 786e1f5caaSNeil Perrin * The older position is supported for backwards compatability. 796e1f5caaSNeil Perrin * 806e1f5caaSNeil Perrin * The zio_eck_t contains a zec_cksum which for the intent log is 81fa9e4066Sahrens * the sequence number of this log block. A seq of 0 is invalid. 826e1f5caaSNeil Perrin * The zec_cksum is checked by the SPA against the sequence 83fa9e4066Sahrens * number passed in the blk_cksum field of the blkptr_t 84fa9e4066Sahrens */ 856e1f5caaSNeil Perrin typedef struct zil_chain { 866e1f5caaSNeil Perrin uint64_t zc_pad; 876e1f5caaSNeil Perrin blkptr_t zc_next_blk; /* next block in chain */ 886e1f5caaSNeil Perrin uint64_t zc_nused; /* bytes in log block used */ 896e1f5caaSNeil Perrin zio_eck_t zc_eck; /* block trailer */ 906e1f5caaSNeil Perrin } zil_chain_t; 91fa9e4066Sahrens 92b4d654b0Sperrin #define ZIL_MIN_BLKSZ 4096ULL 93fa9e4066Sahrens #define ZIL_MAX_BLKSZ SPA_MAXBLOCKSIZE 94fa9e4066Sahrens 95d80c45e0Sbonwick /* 96d80c45e0Sbonwick * The words of a log block checksum. 97d80c45e0Sbonwick */ 98d80c45e0Sbonwick #define ZIL_ZC_GUID_0 0 99d80c45e0Sbonwick #define ZIL_ZC_GUID_1 1 100d80c45e0Sbonwick #define ZIL_ZC_OBJSET 2 101d80c45e0Sbonwick #define ZIL_ZC_SEQ 3 102d80c45e0Sbonwick 103da6c28aaSamw typedef enum zil_create { 104da6c28aaSamw Z_FILE, 105da6c28aaSamw Z_DIR, 106da6c28aaSamw Z_XATTRDIR, 107da6c28aaSamw } zil_create_t; 108da6c28aaSamw 109da6c28aaSamw /* 110da6c28aaSamw * size of xvattr log section. 111da6c28aaSamw * its composed of lr_attr_t + xvattr bitmap + 2 64 bit timestamps 112da6c28aaSamw * for create time and a single 64 bit integer for all of the attributes, 113da6c28aaSamw * and 4 64 bit integers (32 bytes) for the scanstamp. 114da6c28aaSamw * 115da6c28aaSamw */ 116da6c28aaSamw 117da6c28aaSamw #define ZIL_XVAT_SIZE(mapsize) \ 118da6c28aaSamw sizeof (lr_attr_t) + (sizeof (uint32_t) * (mapsize - 1)) + \ 119da6c28aaSamw (sizeof (uint64_t) * 7) 120569e6c63Smarks 121569e6c63Smarks /* 122569e6c63Smarks * Size of ACL in log. The ACE data is padded out to properly align 123569e6c63Smarks * on 8 byte boundary. 124569e6c63Smarks */ 125569e6c63Smarks 126569e6c63Smarks #define ZIL_ACE_LENGTH(x) (roundup(x, sizeof (uint64_t))) 127569e6c63Smarks 128fa9e4066Sahrens /* 129fa9e4066Sahrens * Intent log transaction types and record structures 130fa9e4066Sahrens */ 131da6c28aaSamw #define TX_CREATE 1 /* Create file */ 132da6c28aaSamw #define TX_MKDIR 2 /* Make directory */ 133da6c28aaSamw #define TX_MKXATTR 3 /* Make XATTR directory */ 134da6c28aaSamw #define TX_SYMLINK 4 /* Create symbolic link to a file */ 135da6c28aaSamw #define TX_REMOVE 5 /* Remove file */ 136da6c28aaSamw #define TX_RMDIR 6 /* Remove directory */ 137da6c28aaSamw #define TX_LINK 7 /* Create hard link to a file */ 138da6c28aaSamw #define TX_RENAME 8 /* Rename a file */ 139da6c28aaSamw #define TX_WRITE 9 /* File write */ 140da6c28aaSamw #define TX_TRUNCATE 10 /* Truncate a file */ 141da6c28aaSamw #define TX_SETATTR 11 /* Set file attributes */ 142da6c28aaSamw #define TX_ACL_V0 12 /* Set old formatted ACL */ 143da6c28aaSamw #define TX_ACL 13 /* Set ACL */ 144da6c28aaSamw #define TX_CREATE_ACL 14 /* create with ACL */ 145da6c28aaSamw #define TX_CREATE_ATTR 15 /* create + attrs */ 146da6c28aaSamw #define TX_CREATE_ACL_ATTR 16 /* create with ACL + attrs */ 147da6c28aaSamw #define TX_MKDIR_ACL 17 /* mkdir with ACL */ 148da6c28aaSamw #define TX_MKDIR_ATTR 18 /* mkdir with attr */ 149da6c28aaSamw #define TX_MKDIR_ACL_ATTR 19 /* mkdir with ACL + attrs */ 150975c32a0SNeil Perrin #define TX_WRITE2 20 /* dmu_sync EALREADY write */ 151975c32a0SNeil Perrin #define TX_MAX_TYPE 21 /* Max transaction type */ 152da6c28aaSamw 153da6c28aaSamw /* 154da6c28aaSamw * The transactions for mkdir, symlink, remove, rmdir, link, and rename 155da6c28aaSamw * may have the following bit set, indicating the original request 156da6c28aaSamw * specified case-insensitive handling of names. 157da6c28aaSamw */ 158da6c28aaSamw #define TX_CI ((uint64_t)0x1 << 63) /* case-insensitive behavior requested */ 159fa9e4066Sahrens 160b24ab676SJeff Bonwick /* 161b24ab676SJeff Bonwick * Transactions for write, truncate, setattr, acl_v0, and acl can be logged 162b24ab676SJeff Bonwick * out of order. For convenience in the code, all such records must have 163b24ab676SJeff Bonwick * lr_foid at the same offset. 164b24ab676SJeff Bonwick */ 165b24ab676SJeff Bonwick #define TX_OOO(txtype) \ 166b24ab676SJeff Bonwick ((txtype) == TX_WRITE || \ 167b24ab676SJeff Bonwick (txtype) == TX_TRUNCATE || \ 168b24ab676SJeff Bonwick (txtype) == TX_SETATTR || \ 169b24ab676SJeff Bonwick (txtype) == TX_ACL_V0 || \ 170b24ab676SJeff Bonwick (txtype) == TX_ACL || \ 171b24ab676SJeff Bonwick (txtype) == TX_WRITE2) 172b24ab676SJeff Bonwick 173fa9e4066Sahrens /* 174fa9e4066Sahrens * Format of log records. 175fa9e4066Sahrens * The fields are carefully defined to allow them to be aligned 176fa9e4066Sahrens * and sized the same on sparc & intel architectures. 177fa9e4066Sahrens * Each log record has a common structure at the beginning. 178b19a79ecSperrin * 1795002558fSNeil Perrin * The log record on disk (lrc_seq) holds the sequence number of all log 1805002558fSNeil Perrin * records which is used to ensure we don't replay the same record. 181fa9e4066Sahrens */ 182fa9e4066Sahrens typedef struct { /* common log record header */ 183fa9e4066Sahrens uint64_t lrc_txtype; /* intent log transaction type */ 184fa9e4066Sahrens uint64_t lrc_reclen; /* transaction record length */ 185fa9e4066Sahrens uint64_t lrc_txg; /* dmu transaction group number */ 186b19a79ecSperrin uint64_t lrc_seq; /* see comment above */ 187fa9e4066Sahrens } lr_t; 188fa9e4066Sahrens 189b24ab676SJeff Bonwick /* 190b24ab676SJeff Bonwick * Common start of all out-of-order record types (TX_OOO() above). 191b24ab676SJeff Bonwick */ 192b24ab676SJeff Bonwick typedef struct { 193b24ab676SJeff Bonwick lr_t lr_common; /* common portion of log record */ 194b24ab676SJeff Bonwick uint64_t lr_foid; /* object id */ 195b24ab676SJeff Bonwick } lr_ooo_t; 196b24ab676SJeff Bonwick 197da6c28aaSamw /* 198da6c28aaSamw * Handle option extended vattr attributes. 199da6c28aaSamw * 200da6c28aaSamw * Whenever new attributes are added the version number 201da6c28aaSamw * will need to be updated as will code in 202da6c28aaSamw * zfs_log.c and zfs_replay.c 203da6c28aaSamw */ 204da6c28aaSamw typedef struct { 205da6c28aaSamw uint32_t lr_attr_masksize; /* number of elements in array */ 206da6c28aaSamw uint32_t lr_attr_bitmap; /* First entry of array */ 207da6c28aaSamw /* remainder of array and any additional fields */ 208da6c28aaSamw } lr_attr_t; 209da6c28aaSamw 210da6c28aaSamw /* 211da6c28aaSamw * log record for creates without optional ACL. 212da6c28aaSamw * This log record does support optional xvattr_t attributes. 213da6c28aaSamw */ 214fa9e4066Sahrens typedef struct { 215fa9e4066Sahrens lr_t lr_common; /* common portion of log record */ 216fa9e4066Sahrens uint64_t lr_doid; /* object id of directory */ 217fa9e4066Sahrens uint64_t lr_foid; /* object id of created file object */ 218fa9e4066Sahrens uint64_t lr_mode; /* mode of object */ 219fa9e4066Sahrens uint64_t lr_uid; /* uid of object */ 220fa9e4066Sahrens uint64_t lr_gid; /* gid of object */ 221fa9e4066Sahrens uint64_t lr_gen; /* generation (txg of creation) */ 222fa9e4066Sahrens uint64_t lr_crtime[2]; /* creation time */ 223fa9e4066Sahrens uint64_t lr_rdev; /* rdev of object to create */ 224fa9e4066Sahrens /* name of object to create follows this */ 225fa9e4066Sahrens /* for symlinks, link content follows name */ 226da6c28aaSamw /* for creates with xvattr data, the name follows the xvattr info */ 227fa9e4066Sahrens } lr_create_t; 228fa9e4066Sahrens 229da6c28aaSamw /* 230da6c28aaSamw * FUID ACL record will be an array of ACEs from the original ACL. 231da6c28aaSamw * If this array includes ephemeral IDs, the record will also include 232da6c28aaSamw * an array of log-specific FUIDs to replace the ephemeral IDs. 233da6c28aaSamw * Only one copy of each unique domain will be present, so the log-specific 234da6c28aaSamw * FUIDs will use an index into a compressed domain table. On replay this 235da6c28aaSamw * information will be used to construct real FUIDs (and bypass idmap, 236da6c28aaSamw * since it may not be available). 237da6c28aaSamw */ 238da6c28aaSamw 239da6c28aaSamw /* 240da6c28aaSamw * Log record for creates with optional ACL 241da6c28aaSamw * This log record is also used for recording any FUID 242da6c28aaSamw * information needed for replaying the create. If the 243da6c28aaSamw * file doesn't have any actual ACEs then the lr_aclcnt 244da6c28aaSamw * would be zero. 245da6c28aaSamw */ 246da6c28aaSamw typedef struct { 247da6c28aaSamw lr_create_t lr_create; /* common create portion */ 248da6c28aaSamw uint64_t lr_aclcnt; /* number of ACEs in ACL */ 249da6c28aaSamw uint64_t lr_domcnt; /* number of unique domains */ 250da6c28aaSamw uint64_t lr_fuidcnt; /* number of real fuids */ 251da6c28aaSamw uint64_t lr_acl_bytes; /* number of bytes in ACL */ 252da6c28aaSamw uint64_t lr_acl_flags; /* ACL flags */ 253da6c28aaSamw /* lr_acl_bytes number of variable sized ace's follows */ 254da6c28aaSamw /* if create is also setting xvattr's, then acl data follows xvattr */ 255da6c28aaSamw /* if ACE FUIDs are needed then they will follow the xvattr_t */ 256da6c28aaSamw /* Following the FUIDs will be the domain table information. */ 257da6c28aaSamw /* The FUIDs for the owner and group will be in the lr_create */ 258da6c28aaSamw /* portion of the record. */ 259da6c28aaSamw /* name follows ACL data */ 260da6c28aaSamw } lr_acl_create_t; 261da6c28aaSamw 262fa9e4066Sahrens typedef struct { 263fa9e4066Sahrens lr_t lr_common; /* common portion of log record */ 264fa9e4066Sahrens uint64_t lr_doid; /* obj id of directory */ 265fa9e4066Sahrens /* name of object to remove follows this */ 266fa9e4066Sahrens } lr_remove_t; 267fa9e4066Sahrens 268fa9e4066Sahrens typedef struct { 269fa9e4066Sahrens lr_t lr_common; /* common portion of log record */ 270fa9e4066Sahrens uint64_t lr_doid; /* obj id of directory */ 271fa9e4066Sahrens uint64_t lr_link_obj; /* obj id of link */ 272fa9e4066Sahrens /* name of object to link follows this */ 273fa9e4066Sahrens } lr_link_t; 274fa9e4066Sahrens 275fa9e4066Sahrens typedef struct { 276fa9e4066Sahrens lr_t lr_common; /* common portion of log record */ 277fa9e4066Sahrens uint64_t lr_sdoid; /* obj id of source directory */ 278fa9e4066Sahrens uint64_t lr_tdoid; /* obj id of target directory */ 279fa9e4066Sahrens /* 2 strings: names of source and destination follow this */ 280fa9e4066Sahrens } lr_rename_t; 281fa9e4066Sahrens 282fa9e4066Sahrens typedef struct { 283fa9e4066Sahrens lr_t lr_common; /* common portion of log record */ 284fa9e4066Sahrens uint64_t lr_foid; /* file object to write */ 285fa9e4066Sahrens uint64_t lr_offset; /* offset to write to */ 286fa9e4066Sahrens uint64_t lr_length; /* user data length to write */ 287b24ab676SJeff Bonwick uint64_t lr_blkoff; /* no longer used */ 288fa9e4066Sahrens blkptr_t lr_blkptr; /* spa block pointer for replay */ 289fa9e4066Sahrens /* write data will follow for small writes */ 290fa9e4066Sahrens } lr_write_t; 291fa9e4066Sahrens 292fa9e4066Sahrens typedef struct { 293fa9e4066Sahrens lr_t lr_common; /* common portion of log record */ 294fa9e4066Sahrens uint64_t lr_foid; /* object id of file to truncate */ 295fa9e4066Sahrens uint64_t lr_offset; /* offset to truncate from */ 296fa9e4066Sahrens uint64_t lr_length; /* length to truncate */ 297fa9e4066Sahrens } lr_truncate_t; 298fa9e4066Sahrens 299fa9e4066Sahrens typedef struct { 300fa9e4066Sahrens lr_t lr_common; /* common portion of log record */ 301fa9e4066Sahrens uint64_t lr_foid; /* file object to change attributes */ 302fa9e4066Sahrens uint64_t lr_mask; /* mask of attributes to set */ 303fa9e4066Sahrens uint64_t lr_mode; /* mode to set */ 304fa9e4066Sahrens uint64_t lr_uid; /* uid to set */ 305fa9e4066Sahrens uint64_t lr_gid; /* gid to set */ 306fa9e4066Sahrens uint64_t lr_size; /* size to set */ 307fa9e4066Sahrens uint64_t lr_atime[2]; /* access time */ 308fa9e4066Sahrens uint64_t lr_mtime[2]; /* modification time */ 309da6c28aaSamw /* optional attribute lr_attr_t may be here */ 310fa9e4066Sahrens } lr_setattr_t; 311fa9e4066Sahrens 312fa9e4066Sahrens typedef struct { 313fa9e4066Sahrens lr_t lr_common; /* common portion of log record */ 314fa9e4066Sahrens uint64_t lr_foid; /* obj id of file */ 315fa9e4066Sahrens uint64_t lr_aclcnt; /* number of acl entries */ 316fa9e4066Sahrens /* lr_aclcnt number of ace_t entries follow this */ 317da6c28aaSamw } lr_acl_v0_t; 318da6c28aaSamw 319da6c28aaSamw typedef struct { 320da6c28aaSamw lr_t lr_common; /* common portion of log record */ 321da6c28aaSamw uint64_t lr_foid; /* obj id of file */ 322da6c28aaSamw uint64_t lr_aclcnt; /* number of ACEs in ACL */ 323da6c28aaSamw uint64_t lr_domcnt; /* number of unique domains */ 324da6c28aaSamw uint64_t lr_fuidcnt; /* number of real fuids */ 325da6c28aaSamw uint64_t lr_acl_bytes; /* number of bytes in ACL */ 326da6c28aaSamw uint64_t lr_acl_flags; /* ACL flags */ 327da6c28aaSamw /* lr_acl_bytes number of variable sized ace's follows */ 328fa9e4066Sahrens } lr_acl_t; 329fa9e4066Sahrens 330fa9e4066Sahrens /* 331fa9e4066Sahrens * ZIL structure definitions, interface function prototype and globals. 332fa9e4066Sahrens */ 333fa9e4066Sahrens 334fa9e4066Sahrens /* 335510b6c0eSNeil Perrin * Writes are handled in three different ways: 336510b6c0eSNeil Perrin * 337510b6c0eSNeil Perrin * WR_INDIRECT: 338510b6c0eSNeil Perrin * In this mode, if we need to commit the write later, then the block 339510b6c0eSNeil Perrin * is immediately written into the file system (using dmu_sync), 340510b6c0eSNeil Perrin * and a pointer to the block is put into the log record. 341510b6c0eSNeil Perrin * When the txg commits the block is linked in. 342510b6c0eSNeil Perrin * This saves additionally writing the data into the log record. 343510b6c0eSNeil Perrin * There are a few requirements for this to occur: 344510b6c0eSNeil Perrin * - write is greater than zfs/zvol_immediate_write_sz 345510b6c0eSNeil Perrin * - not using slogs (as slogs are assumed to always be faster 346510b6c0eSNeil Perrin * than writing into the main pool) 347510b6c0eSNeil Perrin * - the write occupies only one block 348510b6c0eSNeil Perrin * WR_COPIED: 349510b6c0eSNeil Perrin * If we know we'll immediately be committing the 350510b6c0eSNeil Perrin * transaction (FSYNC or FDSYNC), the we allocate a larger 351510b6c0eSNeil Perrin * log record here for the data and copy the data in. 352510b6c0eSNeil Perrin * WR_NEED_COPY: 353510b6c0eSNeil Perrin * Otherwise we don't allocate a buffer, and *if* we need to 354510b6c0eSNeil Perrin * flush the write later then a buffer is allocated and 355510b6c0eSNeil Perrin * we retrieve the data using the dmu. 356fa9e4066Sahrens */ 357104e2ed7Sperrin typedef enum { 358104e2ed7Sperrin WR_INDIRECT, /* indirect - a large write (dmu_sync() data */ 359104e2ed7Sperrin /* and put blkptr in log, rather than actual data) */ 360104e2ed7Sperrin WR_COPIED, /* immediate - data is copied into lr_write_t */ 361104e2ed7Sperrin WR_NEED_COPY, /* immediate - data needs to be copied if pushed */ 362b24ab676SJeff Bonwick WR_NUM_STATES /* number of states */ 363104e2ed7Sperrin } itx_wr_state_t; 364104e2ed7Sperrin 365fa9e4066Sahrens typedef struct itx { 366fa9e4066Sahrens list_node_t itx_node; /* linkage on zl_itx_list */ 367fa9e4066Sahrens void *itx_private; /* type-specific opaque data */ 368104e2ed7Sperrin itx_wr_state_t itx_wr_state; /* write state */ 36967bd71c6Sperrin uint8_t itx_sync; /* synchronous transaction */ 370abf76b6eSperrin uint64_t itx_sod; /* record size on disk */ 37151bd2f97SNeil Perrin uint64_t itx_oid; /* object id */ 372fa9e4066Sahrens lr_t itx_lr; /* common part of log record */ 373fa9e4066Sahrens /* followed by type-specific part of lr_xx_t and its immediate data */ 374fa9e4066Sahrens } itx_t; 375fa9e4066Sahrens 376b24ab676SJeff Bonwick typedef int zil_parse_blk_func_t(zilog_t *zilog, blkptr_t *bp, void *arg, 377fa9e4066Sahrens uint64_t txg); 378b24ab676SJeff Bonwick typedef int zil_parse_lr_func_t(zilog_t *zilog, lr_t *lr, void *arg, 379fa9e4066Sahrens uint64_t txg); 380fa9e4066Sahrens typedef int zil_replay_func_t(); 381c5c6ffa0Smaybee typedef int zil_get_data_t(void *arg, lr_write_t *lr, char *dbuf, zio_t *zio); 382fa9e4066Sahrens 383b24ab676SJeff Bonwick extern int zil_parse(zilog_t *zilog, zil_parse_blk_func_t *parse_blk_func, 384fa9e4066Sahrens zil_parse_lr_func_t *parse_lr_func, void *arg, uint64_t txg); 385fa9e4066Sahrens 386fa9e4066Sahrens extern void zil_init(void); 387fa9e4066Sahrens extern void zil_fini(void); 388fa9e4066Sahrens 389fa9e4066Sahrens extern zilog_t *zil_alloc(objset_t *os, zil_header_t *zh_phys); 390fa9e4066Sahrens extern void zil_free(zilog_t *zilog); 391fa9e4066Sahrens 392fa9e4066Sahrens extern zilog_t *zil_open(objset_t *os, zil_get_data_t *get_data); 393fa9e4066Sahrens extern void zil_close(zilog_t *zilog); 394fa9e4066Sahrens 3951209a471SNeil Perrin extern void zil_replay(objset_t *os, void *arg, 3961209a471SNeil Perrin zil_replay_func_t *replay_func[TX_MAX_TYPE]); 397b24ab676SJeff Bonwick extern boolean_t zil_replaying(zilog_t *zilog, dmu_tx_t *tx); 398d80c45e0Sbonwick extern void zil_destroy(zilog_t *zilog, boolean_t keep_first); 399ce636f8bSMatthew Ahrens extern void zil_destroy_sync(zilog_t *zilog, dmu_tx_t *tx); 4003a8a1de4Sperrin extern void zil_rollback_destroy(zilog_t *zilog, dmu_tx_t *tx); 401fa9e4066Sahrens 402da6c28aaSamw extern itx_t *zil_itx_create(uint64_t txtype, size_t lrsize); 403b24ab676SJeff Bonwick extern void zil_itx_destroy(itx_t *itx); 4045002558fSNeil Perrin extern void zil_itx_assign(zilog_t *zilog, itx_t *itx, dmu_tx_t *tx); 405fa9e4066Sahrens 4065002558fSNeil Perrin extern void zil_commit(zilog_t *zilog, uint64_t oid); 407fa9e4066Sahrens 408fd136879SMatthew Ahrens extern int zil_vdev_offline(const char *osname, void *txarg); 409fd136879SMatthew Ahrens extern int zil_claim(const char *osname, void *txarg); 410fd136879SMatthew Ahrens extern int zil_check_log_chain(const char *osname, void *txarg); 411fa9e4066Sahrens extern void zil_sync(zilog_t *zilog, dmu_tx_t *tx); 4125002558fSNeil Perrin extern void zil_clean(zilog_t *zilog, uint64_t synced_txg); 413fa9e4066Sahrens 414*3b2aab18SMatthew Ahrens extern int zil_suspend(const char *osname, void **cookiep); 415*3b2aab18SMatthew Ahrens extern void zil_resume(void *cookie); 416fa9e4066Sahrens 417b24ab676SJeff Bonwick extern void zil_add_block(zilog_t *zilog, const blkptr_t *bp); 418b24ab676SJeff Bonwick extern int zil_bp_tree_add(zilog_t *zilog, const blkptr_t *bp); 419b24ab676SJeff Bonwick 42055da60b9SMark J Musante extern void zil_set_sync(zilog_t *zilog, uint64_t syncval); 42155da60b9SMark J Musante 422e09fa4daSNeil Perrin extern void zil_set_logbias(zilog_t *zilog, uint64_t slogval); 423e09fa4daSNeil Perrin 42455da60b9SMark J Musante extern int zil_replay_disable; 425fa9e4066Sahrens 426fa9e4066Sahrens #ifdef __cplusplus 427fa9e4066Sahrens } 428fa9e4066Sahrens #endif 429fa9e4066Sahrens 430fa9e4066Sahrens #endif /* _SYS_ZIL_H */ 431