linux/drivers/md
Mikulas Patocka d698aa4500 dm snapshot: add merge target
The snapshot-merge target allows a snapshot to be merged back into the
snapshot's origin device.

One anticipated use of snapshot merging is the rollback of filesystems
to back out problematic system upgrades.

This patch adds snapshot-merge target management to both
dm_snapshot_init() and dm_snapshot_exit().  As an initial place-holder,
snapshot-merge is identical to the snapshot target.  Documentation is
provided.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-12-10 23:52:30 +00:00
..
raid6test md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00
.gitignore
bitmap.c md: remove clumsy usage of do_sync_mapping_range from bitmap code 2009-10-16 15:56:01 +11:00
bitmap.h
dm-bio-record.h
dm-crypt.c dm crypt: add plain64 iv 2009-12-10 23:52:25 +00:00
dm-delay.c
dm-exception-store.c dm snapshot: move cow ref from exception store to snap core 2009-12-10 23:52:12 +00:00
dm-exception-store.h dm exception store: add merge specific methods 2009-12-10 23:52:29 +00:00
dm-io.c dm io: handle empty barriers 2009-12-10 23:52:22 +00:00
dm-ioctl.c dm: rename dm_suspended to dm_suspended_md 2009-12-10 23:52:26 +00:00
dm-kcopyd.c dm kcopyd: accept zero size jobs 2009-12-10 23:52:13 +00:00
dm-linear.c
dm-log-userspace-base.c dm log: userspace fix incorrect luid cast in userspace_ctr 2009-10-16 23:18:15 +01:00
dm-log-userspace-transfer.c
dm-log-userspace-transfer.h
dm-log.c dm raid1: report flush errors separately in status 2009-12-10 23:52:02 +00:00
dm-mpath.c dm mpath: reject messages when device is suspended 2009-12-10 23:52:27 +00:00
dm-mpath.h
dm-path-selector.c
dm-path-selector.h
dm-queue-length.c
dm-raid1.c dm raid1: explicitly initialise bio_lists 2009-12-10 23:52:06 +00:00
dm-region-hash.c dm raid1: remove bio_endio from dm_rh_mark_nosync 2009-12-10 23:52:05 +00:00
dm-round-robin.c
dm-service-time.c
dm-snap-persistent.c dm exception store: add merge specific methods 2009-12-10 23:52:29 +00:00
dm-snap-transient.c dm snapshot: move cow ref from exception store to snap core 2009-12-10 23:52:12 +00:00
dm-snap.c dm snapshot: add merge target 2009-12-10 23:52:30 +00:00
dm-stripe.c
dm-sysfs.c dm: rename dm_suspended to dm_suspended_md 2009-12-10 23:52:26 +00:00
dm-table.c dm: bind new table before destroying old 2009-12-10 23:52:23 +00:00
dm-target.c
dm-uevent.c dm: avoid _hash_lock deadlock 2009-12-10 23:51:52 +00:00
dm-uevent.h
dm-zero.c
dm.c dm: export suspended state to targets 2009-12-10 23:52:27 +00:00
dm.h dm: rename dm_suspended to dm_suspended_md 2009-12-10 23:52:26 +00:00
faulty.c
Kconfig
linear.c
linear.h
Makefile md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00
md.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6 2009-12-08 07:38:50 -08:00
md.h
mktables.c
multipath.c
multipath.h
raid0.c
raid0.h
raid1.c md: revert incorrect fix for read error handling in raid1. 2009-12-01 17:30:59 +11:00
raid1.h
raid5.c md/raid5: Allow dirty-degraded arrays to be assembled when only party is degraded. 2009-11-13 17:47:00 +11:00
raid5.h md: fix problems with RAID6 calculations for DDF. 2009-10-16 16:27:34 +11:00
raid6algos.c
raid6altivec.uc md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00
raid6int.uc md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00
raid6mmx.c
raid6recov.c
raid6sse1.c
raid6sse2.c
raid6x86.h
raid10.c md: raid1/raid10: handle allocation errors during array setup. 2009-10-16 15:55:44 +11:00
raid10.h
unroll.awk md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00