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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
..
Rules.am Check for -Wno-unused-but-set-variable gcc support 2011-06-14 14:43:22 -07:00
always-no-unused-but-set-variable.m4 In autoconf v2.68, AC_LANG_PROGRAM must be quoted 2011-11-28 11:16:33 -08:00
arch.am Add make rule for building Arch Linux packages 2011-12-14 19:14:23 -08:00
config.awk Add build system 2010-08-31 13:41:27 -07:00
config.guess Add initial autoconf products 2010-08-31 13:42:02 -07:00
config.sub Add initial autoconf products 2010-08-31 13:42:02 -07:00
deb.am Avoid 'rpm -q' bug for 'make pkg' 2011-07-01 12:39:25 -07:00
depcomp Add initial autoconf products 2010-08-31 13:42:02 -07:00
install-sh Add initial autoconf products 2010-08-31 13:42:02 -07:00
kernel-automount.m4 Add .zfs control directory 2012-03-22 13:03:47 -07:00
kernel-bdev-block-device-operations.m4 Fix configure tests to play nice with GCC 4.6 2011-11-29 16:14:25 -08:00
kernel-bdev-logical-size.m4 Fix configure tests to play nice with GCC 4.6 2011-11-29 16:14:25 -08:00
kernel-bdi-setup-and-register.m4 Simplify BDI integration 2011-11-08 10:19:03 -08:00
kernel-bdi.m4 Add backing_device_info per-filesystem 2011-08-04 13:37:38 -07:00
kernel-bio-empty-barrier.m4 Add build system 2010-08-31 13:41:27 -07:00
kernel-bio-end-io-t-args.m4 Fix gcc configure warnings 2011-04-19 10:10:47 -07:00
kernel-bio-failfast.m4 Fix gcc configure warnings 2011-04-19 10:10:47 -07:00
kernel-bio-rw-syncio.m4 Fix gcc configure warnings 2011-04-19 10:10:47 -07:00
kernel-blk-end-request.m4 Fix configure tests to play nice with GCC 4.6 2011-11-29 16:14:25 -08:00
kernel-blk-fetch-request.m4 Fix configure tests to play nice with GCC 4.6 2011-11-29 16:14:25 -08:00
kernel-blk-queue-discard.m4 Add support for DISCARD to ZVOLs. 2012-02-09 16:19:38 -08:00
kernel-blk-queue-flush.m4 Fix synchronicity for ZVOLs. 2012-02-07 16:23:06 -08:00
kernel-blk-queue-io-opt.m4 Improve ZVOL queue behavior. 2012-02-07 16:23:06 -08:00
kernel-blk-queue-max-hw-sectors.m4 Improve ZVOL queue behavior. 2012-02-07 16:23:06 -08:00
kernel-blk-queue-max-segments.m4 Improve ZVOL queue behavior. 2012-02-07 16:23:06 -08:00
kernel-blk-queue-nonrot.m4 Improve ZVOL queue behavior. 2012-02-07 16:23:06 -08:00
kernel-blk-queue-physical-block-size.m4 Improve ZVOL queue behavior. 2012-02-07 16:23:06 -08:00
kernel-blk-requeue-request.m4 Fix configure tests to play nice with GCC 4.6 2011-11-29 16:14:25 -08:00
kernel-blk-rq-bytes.m4 Fix configure tests to play nice with GCC 4.6 2011-11-29 16:14:25 -08:00
kernel-blk-rq-pos.m4 Fix configure tests to play nice with GCC 4.6 2011-11-29 16:14:25 -08:00
kernel-blk-rq-sectors.m4 Fix configure tests to play nice with GCC 4.6 2011-11-29 16:14:25 -08:00
kernel-blkdev-get-by-path.m4 Linux 2.6.38 compat, blkdev_get_by_path() 2011-02-23 12:29:38 -08:00
kernel-check-disk-size-change.m4 Fix 'zfs set volsize=N pool/dataset' 2011-05-02 08:54:40 -07:00
kernel-d-obtain-alias.m4 Implemented NFS export_operations. 2011-04-29 12:36:13 -07:00
kernel-evict-inode.m4 Improve HAVE_EVICT_INODE check 2011-08-08 16:42:09 -07:00
kernel-fallocate.m4 Support the fallocate() file operation. 2012-02-09 16:19:32 -08:00
kernel-fmode-t.m4 Fix gcc configure warnings 2011-04-19 10:10:47 -07:00
kernel-fsync.m4 Linux 3.1 compat, fops->fsync() 2011-11-10 10:03:08 -08:00
kernel-get-disk-ro.m4 Fix configure tests to play nice with GCC 4.6 2011-11-29 16:14:25 -08:00
kernel-insert-inode-locked.m4 Linux 2.6.28 compat, insert_inode_locked() 2011-03-22 12:15:54 -07:00
kernel-invalidate-bdev-args.m4 Fix gcc configure warnings 2011-04-19 10:10:47 -07:00
kernel-kobj-name-len.m4 Fix gcc configure warnings 2011-04-19 10:10:47 -07:00
kernel-mount-nodev.m4 Linux compat 2.6.39: mount_nodev() 2011-07-01 13:36:39 -07:00
kernel-open-bdev-exclusive.m4 Add build system 2010-08-31 13:41:27 -07:00
kernel-rq-for-each_segment.m4 Fix configure tests to play nice with GCC 4.6 2011-11-29 16:14:25 -08:00
kernel-rq-is_sync.m4 Fix configure tests to play nice with GCC 4.6 2011-11-29 16:14:25 -08:00
kernel-security-inode-init.m4 Linux 3.2 compat, security_inode_init_security() 2012-01-12 15:06:39 -08:00
kernel-set-nlink.m4 Linux 3.2 compat: set_nlink() 2011-12-16 20:02:52 -08:00
kernel-show-options.m4 Linux 3.3 compat, sops->show_options() 2012-02-03 10:02:01 -08:00
kernel-shrink.m4 Linux 3.1 compat, super_block->s_shrink 2012-01-11 11:46:02 -08:00
kernel-truncate-setsize.m4 Tear down and flush the mmap region 2011-06-27 09:59:19 -07:00
kernel-xattr-handler.m4 Fix gcc configure warnings 2011-04-19 10:10:47 -07:00
kernel.m4 Add .zfs control directory 2012-03-22 13:03:47 -07:00
ltmain.sh Refresh autogen.sh products 2010-12-07 15:33:12 -08:00
missing Add initial autoconf products 2010-08-31 13:42:02 -07:00
rpm.am Cleanly support debug packages 2012-02-27 14:08:17 -08:00
suppressed-warnings.txt Suppress packaging warning 2011-11-08 11:32:04 -08:00
tgz.am Avoid 'rpm -q' bug for 'make pkg' 2011-07-01 12:39:25 -07:00
user-arch.m4 Add build system 2010-08-31 13:41:27 -07:00
user-frame-larger-than.m4 In autoconf v2.68, AC_LANG_PROGRAM must be quoted 2011-11-28 11:16:33 -08:00
user-ioctl.m4 Add build system 2010-08-31 13:41:27 -07:00
user-libblkid.m4 In autoconf v2.68, AC_LANG_PROGRAM must be quoted 2011-11-28 11:16:33 -08:00
user-libuuid.m4 Add build system 2010-08-31 13:41:27 -07:00
user-nptl_guard_within_stack.m4 In autoconf v2.68, AC_LANG_PROGRAM must be quoted 2011-11-28 11:16:33 -08:00
user-selinux.m4 Autoconf selinux support 2011-01-28 12:45:19 -08:00
user-udev.m4 Move udev rules from /etc/udev to /lib/udev 2011-08-08 16:21:10 -07:00
user-zlib.m4 Add build system 2010-08-31 13:41:27 -07:00
user.m4 Move udev rules from /etc/udev to /lib/udev 2011-08-08 16:21:10 -07:00
zfs-build.m4 Fix distribution detection 2012-03-05 10:38:27 -08:00
zfs-meta.m4 Add build system 2010-08-31 13:41:27 -07:00