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FreeBSD ZFS
The Zettabyte File System
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FreeBSD ZFS
The Zettabyte File System
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Routines to manage intent log entries. More...
#include <sys/types.h>#include <sys/param.h>#include <sys/systm.h>#include <sys/sysmacros.h>#include <sys/cmn_err.h>#include <sys/kmem.h>#include <sys/file.h>#include <sys/vfs.h>#include <sys/zfs_znode.h>#include <sys/zfs_dir.h>#include <sys/zil.h>#include <sys/zil_impl.h>#include <sys/byteorder.h>#include <sys/policy.h>#include <sys/stat.h>#include <sys/acl.h>#include <sys/dmu.h>#include <sys/spa.h>#include <sys/zfs_fuid.h>#include <sys/dsl_dataset.h>
Go to the source code of this file.
Functions | |
| int | zfs_log_create_txtype (zil_create_t type, vsecattr_t *vsecp, vattr_t *vap) |
| static void | zfs_log_xvattr (lr_attr_t *lrattr, xvattr_t *xvap) |
| build up the log data necessary for logging xvattr_t First lr_attr_t is initialized. | |
| static void * | zfs_log_fuid_ids (zfs_fuid_info_t *fuidp, void *start) |
| static void * | zfs_log_fuid_domains (zfs_fuid_info_t *fuidp, void *start) |
| void | zfs_log_create (zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, znode_t *dzp, znode_t *zp, char *name, vsecattr_t *vsecp, zfs_fuid_info_t *fuidp, vattr_t *vap) |
| Handles TX_CREATE, TX_CREATE_ATTR, TX_MKDIR, TX_MKDIR_ATTR and TX_MKXATTR transactions. | |
| void | zfs_log_remove (zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, znode_t *dzp, char *name, uint64_t foid) |
| handles both TX_REMOVE and TX_RMDIR transactions. | |
| void | zfs_log_link (zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, znode_t *dzp, znode_t *zp, char *name) |
| handles TX_LINK transactions. | |
| void | zfs_log_symlink (zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, znode_t *dzp, znode_t *zp, char *name, char *link) |
| handles TX_SYMLINK transactions. | |
| void | zfs_log_rename (zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, znode_t *sdzp, char *sname, znode_t *tdzp, char *dname, znode_t *szp) |
| handles TX_RENAME transactions. | |
| void | zfs_log_write (zilog_t *zilog, dmu_tx_t *tx, int txtype, znode_t *zp, offset_t off, ssize_t resid, int ioflag) |
| void | zfs_log_truncate (zilog_t *zilog, dmu_tx_t *tx, int txtype, znode_t *zp, uint64_t off, uint64_t len) |
| handles TX_TRUNCATE transactions. | |
| void | zfs_log_setattr (zilog_t *zilog, dmu_tx_t *tx, int txtype, znode_t *zp, vattr_t *vap, uint_t mask_applied, zfs_fuid_info_t *fuidp) |
| handles TX_SETATTR transactions. | |
| void | zfs_log_acl (zilog_t *zilog, dmu_tx_t *tx, znode_t *zp, vsecattr_t *vsecp, zfs_fuid_info_t *fuidp) |
| handles TX_ACL transactions. | |
Variables | |
| ssize_t | zfs_immediate_write_sz = 32768 |
| handles TX_WRITE transactions. | |
Routines to manage intent log entries.
These zfs_log_* functions must be called within a dmu tx, in one of 2 contexts depending on zilog->z_replay:
Non replay mode --------------- We need to record the transaction so that if it is committed to the Intent Log then it can be replayed. An intent log transaction structure (itx_t) is allocated and all the information necessary to possibly replay the transaction is saved in it. The itx is then assigned a sequence number and inserted in the in-memory list anchored in the zilog.
Replay mode ----------- We need to mark the intent log record as replayed in the log header. This is done in the same transaction as the replay so that they commit atomically.
Definition in file zfs_log.c.
| void zfs_log_acl | ( | zilog_t * | zilog, |
| dmu_tx_t * | tx, | ||
| znode_t * | zp, | ||
| vsecattr_t * | vsecp, | ||
| zfs_fuid_info_t * | fuidp | ||
| ) |
| void zfs_log_create | ( | zilog_t * | zilog, |
| dmu_tx_t * | tx, | ||
| uint64_t | txtype, | ||
| znode_t * | dzp, | ||
| znode_t * | zp, | ||
| char * | name, | ||
| vsecattr_t * | vsecp, | ||
| zfs_fuid_info_t * | fuidp, | ||
| vattr_t * | vap | ||
| ) |
Handles TX_CREATE, TX_CREATE_ATTR, TX_MKDIR, TX_MKDIR_ATTR and TX_MKXATTR transactions.
TX_CREATE and TX_MKDIR are standard creates, but they may have FUID domain information appended prior to the name. In this case the uid/gid in the log record will be a log centric FUID.
TX_CREATE_ACL_ATTR and TX_MKDIR_ACL_ATTR handle special creates that may contain attributes, ACL and optional fuid information.
TX_CREATE_ACL and TX_MKDIR_ACL handle special creates that specify and ACL and normal users/groups in the ACEs.
There may be an optional xvattr attribute information similar to zfs_log_setattr.
Also, after the file name "domain" strings may be appended.
| int zfs_log_create_txtype | ( | zil_create_t | type, |
| vsecattr_t * | vsecp, | ||
| vattr_t * | vap | ||
| ) |
| static void* zfs_log_fuid_domains | ( | zfs_fuid_info_t * | fuidp, |
| void * | start | ||
| ) | [static] |
| static void* zfs_log_fuid_ids | ( | zfs_fuid_info_t * | fuidp, |
| void * | start | ||
| ) | [static] |
| void zfs_log_setattr | ( | zilog_t * | zilog, |
| dmu_tx_t * | tx, | ||
| int | txtype, | ||
| znode_t * | zp, | ||
| vattr_t * | vap, | ||
| uint_t | mask_applied, | ||
| zfs_fuid_info_t * | fuidp | ||
| ) |
| static void zfs_log_xvattr | ( | lr_attr_t * | lrattr, |
| xvattr_t * | xvap | ||
| ) | [static] |
build up the log data necessary for logging xvattr_t First lr_attr_t is initialized.
following the lr_attr_t is the mapsize and attribute bitmap copied from the xvattr_t. Following the bitmap and bitmapsize two 64 bit words are reserved for the create time which may be set. Following the create time records a single 64 bit integer which has the bits to set on replay for the xvattr.
| ssize_t zfs_immediate_write_sz = 32768 |
1.7.3