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7fc8c33ede
freebsd-dev/module/zfs
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Brian Behlendorf 7fc8c33ede Don't read space maps during import for readonly pools 
Normally when importing a pool the space maps for all top level
vdevs are read from disk.  The space maps will be required latter
when an allocation is performed and free blocks need to be located.

However, if the pool is imported readonly then we are guaranteed
that no allocations can occur.  In this case the space maps need
not be loaded..   A similar argument can be made for the DTLs
(dirty time logs).

Because a pool import will fail if the space maps cannot be read.
The ability to safely ignore them makes it more likely that a
damaged pool can be imported readonly to recover its contents.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #2831
2015-02-09 16:43:03 -08:00
..
arc.c fix l2arc compression buffers leak 2015-02-03 16:54:16 -08:00
blkptr.c Illumos 4757, 4913 2014-08-01 14:28:05 -07:00
bplist.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
bpobj.c Illumos 4757, 4913 2014-08-01 14:28:05 -07:00
bptree.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dbuf_stats.c Skip evicting dbufs when walking the dbuf hash 2015-02-06 09:24:28 -08:00
dbuf.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
ddt_zap.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
ddt.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dmu_diff.c Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t 2014-08-06 14:48:41 -07:00
dmu_object.c Illumos 3693 - restore_object uses at least two transactions to restore an object 2014-10-21 15:26:50 -07:00
dmu_objset.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dmu_send.c Illumos 5162 - zfs recv should use loaned arc buffer to avoid copy 2014-10-21 16:32:11 -07:00
dmu_traverse.c Illumos 5311 - traverse_dnode may report success when it should not 2015-02-06 12:07:15 -08:00
dmu_tx.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dmu_zfetch.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dmu.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dnode_sync.c Illumos 5117 - spacemap reallocation can cause corruption 2014-09-08 09:42:39 -07:00
dnode.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dsl_bookmark.c Illumos 4368, 4369. 2014-07-29 10:55:29 -07:00
dsl_dataset.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dsl_deadlist.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dsl_deleg.c cstyle: Resolve C style issues 2013-12-18 16:46:35 -08:00
dsl_destroy.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dsl_dir.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dsl_pool.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dsl_prop.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dsl_scan.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
dsl_synctask.c Export symbols dsl_sync_task{_nowait} 2014-03-07 10:01:36 -08:00
dsl_userhold.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
fm.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
gzip.c cstyle: Resolve C style issues 2013-12-18 16:46:35 -08:00
lz4.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
lzjb.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
Makefile.in Swap DTRACE_PROBE* with Linux tracepoints 2014-11-17 11:13:55 -08:00
metaslab.c Don't read space maps during import for readonly pools 2015-02-09 16:43:03 -08:00
range_tree.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
refcount.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
rrwlock.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
sa.c Fix SA header size accounting 2015-02-06 09:26:46 -08:00
sha256.c Add linux sha2 support 2010-08-31 13:41:59 -07:00
spa_boot.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
spa_config.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
spa_errlog.c Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t 2014-08-06 14:48:41 -07:00
spa_history.c Use kmem_vasprintf() in log_internal() 2015-01-21 15:30:24 -08:00
spa_misc.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
spa_stats.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
spa.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
space_map.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
space_reftree.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
trace.c Remove duplicate typedefs from trace.h 2015-01-06 16:53:24 -08:00
txg.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
uberblock.c Illumos #3598 2013-10-31 14:58:04 -07:00
unique.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
vdev_cache.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
vdev_disk.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
vdev_file.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
vdev_label.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
vdev_mirror.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
vdev_missing.c Illumos #3598 2013-10-31 14:58:04 -07:00
vdev_queue.c Revert "Pre-allocate vdev I/O buffers" 2015-01-16 14:41:28 -08:00
vdev_raidz.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
vdev_root.c Illumos #3598 2013-10-31 14:58:04 -07:00
vdev.c Don't read space maps during import for readonly pools 2015-02-09 16:43:03 -08:00
zap_leaf.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zap_micro.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zap.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfeature_common.c Illumos 4924 - LZ4 Compression for metadata 2014-10-20 16:17:49 -07:00
zfeature.c Illumos 4370, 4371 2014-07-28 14:29:58 -07:00
zfs_acl.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfs_byteswap.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
zfs_ctldir.c Illumos 4368, 4369. 2014-07-29 10:55:29 -07:00
zfs_debug.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfs_dir.c Revert "Revert "Revert "Fix unlink/xattr deadlock""" 2014-08-11 16:12:36 -07:00
zfs_fm.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfs_fuid.c Illumos #3522 2013-10-30 14:51:27 -07:00
zfs_ioctl.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfs_log.c Only commit the ZIL once in zpl_writepages() (msync() case). 2013-11-23 15:08:29 -08:00
zfs_onexit.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfs_replay.c Linux AIO Support 2014-09-05 15:11:43 -07:00
zfs_rlock.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfs_sa.c Revert "SA spill block cache" 2015-01-16 14:41:28 -08:00
zfs_vfsops.c Linux 3.12 compat: split shrinker has s_shrink 2015-01-20 14:07:59 -08:00
zfs_vnops.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zfs_znode.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zil.c Use zio buffers in zil_itx_create() 2015-02-02 11:20:41 -08:00
zio_checksum.c Illumos 4757, 4913 2014-08-01 14:28:05 -07:00
zio_compress.c Illumos 4757, 4913 2014-08-01 14:28:05 -07:00
zio_inject.c Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t 2014-08-06 14:48:41 -07:00
zio.c Revert "SA spill block cache" 2015-01-16 14:41:28 -08:00
zle.c Update core ZFS code from build 121 to build 141. 2010-05-28 13:45:14 -07:00
zpl_ctldir.c cstyle: Resolve C style issues 2013-12-18 16:46:35 -08:00
zpl_export.c cstyle: Resolve C style issues 2013-12-18 16:46:35 -08:00
zpl_file.c Retire KM_NODEBUG 2015-01-16 14:40:32 -08:00
zpl_inode.c cstyle: Resolve C style issues 2013-12-18 16:46:35 -08:00
zpl_super.c Linux 3.12 compat: split shrinker has s_shrink 2015-01-20 14:07:59 -08:00
zpl_xattr.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
zrlock.c Remove duplicate typedefs from trace.h 2015-01-06 16:53:24 -08:00
zvol.c Handle closing an unopened ZVOL 2015-01-30 14:44:14 -08:00