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ebe7e575ea
mirror_zfs/module/zfs
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Brian Behlendorf ebe7e575ea Add .zfs control directory 
Add support for the .zfs control directory.  This was accomplished
by leveraging as much of the existing ZFS infrastructure as posible
and updating it for Linux as required.  The bulk of the core
functionality is now all there with the following limitations.

*) The .zfs/snapshot directory automount support requires a 2.6.37
   or newer kernel.  The exception is RHEL6.2 which has backported
   the d_automount patches.

*) Creating/destroying/renaming snapshots with mkdir/rmdir/mv
   in the .zfs/snapshot directory works as expected.  However,
   this functionality is only available to root until zfs
   delegations are finished.

      * mkdir - create a snapshot
      * rmdir - destroy a snapshot
      * mv    - rename a snapshot

The following issues are known defeciences, but we expect them to
be addressed by future commits.

*) Add automount support for kernels older the 2.6.37.  This should
   be possible using follow_link() which is what Linux did before.

*) Accessing the .zfs/snapshot directory via NFS is not yet possible.
   The majority of the ground work for this is complete.  However,
   finishing this work will require resolving some lingering
   integration issues with the Linux NFS kernel server.

*) The .zfs/shares directory exists but no futher smb functionality
   has yet been implemented.

Contributions-by: Rohan Puri <rohan.puri15@gmail.com>
Contributiobs-by: Andrew Barnes <barnes333@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #173
2012-03-22 13:03:47 -07:00
..
arc.c Add 'dmu_tx' kstats entry 2012-02-27 08:59:10 -08:00
bplist.c Fix gcc missing parenthesis warnings 2010-08-31 08:38:35 -07:00
bpobj.c Update to onnv_147 2010-08-26 14:24:34 -07:00
dbuf.c Illumos #764: panic in zfs:dbuf_sync_list 2011-08-01 12:09:11 -07:00
ddt_zap.c Fix stack ddt_zap_lookup() 2011-05-31 12:17:27 -07:00
ddt.c Fix stack ddt_class_contains() 2011-05-31 12:17:27 -07:00
dmu_diff.c Update to onnv_147 2010-08-26 14:24:34 -07:00
dmu_object.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
dmu_objset.c Add .zfs control directory 2012-03-22 13:03:47 -07:00
dmu_send.c Illumos #755: dmu_recv_stream builds incomplete guid_to_ds_map 2011-10-18 11:18:14 -07:00
dmu_traverse.c Revert "Fix stack traverse_visitbp()" 2011-05-31 12:17:27 -07:00
dmu_tx.c Add 'dmu_tx' kstats entry 2012-02-27 08:59:10 -08:00
dmu_zfetch.c Add missing ZFS tunables 2011-05-04 10:02:37 -07:00
dmu.c Add 'dmu_tx' kstats entry 2012-02-27 08:59:10 -08:00
dnode_sync.c Fix dbuf eviction assertion 2010-08-31 08:38:45 -07:00
dnode.c Improve meta data performance 2011-11-03 10:19:21 -07:00
dsl_dataset.c Add .zfs control directory 2012-03-22 13:03:47 -07:00
dsl_deadlist.c Update core ZFS code from build 121 to build 141. 2010-05-28 13:45:14 -07:00
dsl_deleg.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
dsl_dir.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
dsl_pool.c Add 'dmu_tx' kstats entry 2012-02-27 08:59:10 -08:00
dsl_prop.c Fix enum compiler warning 2011-02-23 12:52:51 -08:00
dsl_scan.c Add missing ZFS tunables 2011-05-04 10:02:37 -07:00
dsl_synctask.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
fm.c Add missing ZFS tunables 2011-05-04 10:02:37 -07:00
gzip.c Fix zmod.h usage in userspace 2010-08-31 08:38:46 -07:00
lzjb.c Fix stack lzjb 2010-08-31 08:38:49 -07:00
Makefile.in Add .zfs control directory 2012-03-22 13:03:47 -07:00
metaslab.c Illumos #1051: zfs should handle imbalanced luns 2011-08-01 12:09:11 -07:00
refcount.c Fix gcc uninitialized variable warnings 2010-08-31 08:38:43 -07:00
rrwlock.c Enable rrwlock.c compilation 2010-12-07 16:05:25 -08:00
sa.c Add sa_spill_rele() interface 2012-03-07 16:28:00 -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 Prototype/structure update for Linux 2011-02-10 09:27:21 -08:00
spa_errlog.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
spa_history.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
spa_misc.c Cleanup ZFS debug infrastructure 2012-02-02 11:24:30 -08:00
spa.c Reduce number of zio free threads 2012-01-17 08:54:00 -08:00
space_map.c Update core ZFS code from build 121 to build 141. 2010-05-28 13:45:14 -07:00
txg.c Add 'dmu_tx' kstats entry 2012-02-27 08:59:10 -08:00
uberblock.c Update core ZFS code from build 121 to build 141. 2010-05-28 13:45:14 -07:00
unique.c Fix gcc ident pragma warnings 2010-08-27 15:34:02 -07:00
vdev_cache.c Illumos #175: zfs vdev cache consumes excessive memory 2011-08-01 12:09:11 -07:00
vdev_disk.c Linux 2.6.37 compat, WRITE_FLUSH_FUA 2011-06-17 14:37:26 -07:00
vdev_file.c Prototype/structure update for Linux 2011-02-10 09:27:21 -08:00
vdev_label.c Fix gcc uninitialized variable warnings 2010-08-31 08:38:43 -07:00
vdev_mirror.c Fix gcc c90 compliance warnings 2010-08-27 15:28:32 -07:00
vdev_missing.c Update core ZFS code from build 121 to build 141. 2010-05-28 13:45:14 -07:00
vdev_queue.c Add missing ZFS tunables 2011-05-04 10:02:37 -07:00
vdev_raidz.c Fix variables named current 2010-08-31 08:38:44 -07:00
vdev_root.c Fix gcc c90 compliance warnings 2010-08-27 15:28:32 -07:00
vdev.c Allow setting bootfs on any pool 2012-01-17 13:49:07 -08:00
zap_leaf.c Fix gcc uninitialized variable warnings 2010-08-31 08:38:43 -07:00
zap_micro.c Export symbols for the full ZAP API 2011-09-27 16:12:36 -07:00
zap.c Fix rw_init() usage 2010-08-31 08:38:46 -07:00
zfs_acl.c Linux compat 2.6.39: mount_nodev() 2011-07-01 13:36:39 -07:00
zfs_byteswap.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
zfs_ctldir.c Add .zfs control directory 2012-03-22 13:03:47 -07:00
zfs_debug.c Use spl_debug_* helpers 2012-02-09 16:37:48 -08:00
zfs_dir.c Add .zfs control directory 2012-03-22 13:03:47 -07:00
zfs_fm.c Initial zio delay timing 2010-10-12 14:55:02 -07:00
zfs_fuid.c Drop HAVE_XVATTR macros 2011-03-02 11:44:34 -08:00
zfs_ioctl.c Add .zfs control directory 2012-03-22 13:03:47 -07:00
zfs_log.c Drop HAVE_XVATTR macros 2011-03-02 11:44:34 -08:00
zfs_onexit.c Add linux kernel device support 2010-08-31 13:41:50 -07:00
zfs_replay.c Use Linux ATTR_ versions 2011-03-03 11:29:15 -08:00
zfs_rlock.c Range lock performance improvements 2011-03-08 12:44:06 -08:00
zfs_sa.c Use SA_HDL_PRIVATE for SA xattrs 2012-03-02 13:20:48 -08:00
zfs_vfsops.c Add .zfs control directory 2012-03-22 13:03:47 -07:00
zfs_vnops.c Add .zfs control directory 2012-03-22 13:03:47 -07:00
zfs_znode.c Add .zfs control directory 2012-03-22 13:03:47 -07:00
zil.c Illumos #883: ZIL reuse during remount corruption 2011-08-01 12:09:11 -07:00
zio_checksum.c Update core ZFS code from build 121 to build 141. 2010-05-28 13:45:14 -07:00
zio_compress.c Update core ZFS code from build 121 to build 141. 2010-05-28 13:45:14 -07:00
zio_inject.c Add missing ZFS tunables 2011-05-04 10:02:37 -07:00
zio.c Add zio constructor/destructor 2012-03-21 14:51:44 -07:00
zle.c Update core ZFS code from build 121 to build 141. 2010-05-28 13:45:14 -07:00
zpl_ctldir.c Add .zfs control directory 2012-03-22 13:03:47 -07:00
zpl_export.c Add .zfs control directory 2012-03-22 13:03:47 -07:00
zpl_file.c Support the fallocate() file operation. 2012-02-09 16:19:32 -08:00
zpl_inode.c Add .zfs control directory 2012-03-22 13:03:47 -07:00
zpl_super.c Add .zfs control directory 2012-03-22 13:03:47 -07:00
zpl_xattr.c Add missing NULL in zpl_xattr_handlers 2012-03-15 15:18:29 -07:00
zrlock.c Export ZFS symbols needed by Lustre. 2010-09-17 16:24:15 -07:00
zvol.c Add support for DISCARD to ZVOLs. 2012-02-09 16:19:38 -08:00