Mike Snitzer 959eb4e559 dm mpath: support discard ... Enable discard support in the DM multipath target. This discard support depends on a few discard-specific fixes to the block layer's request stacking driver methods. Discard requests are optional so don't allow a failed discard to trigger path failures. If there is a real problem with a given path the barriers associated with the discard (either before or after the discard) will cause path failure. That said, unconditionally passing discard failures up the stack is not ideal. This must be fixed once DM has more information about the nature of the underlying storage failure. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Cc: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>		2010-08-12 04:14:32 +01:00
..
.gitignore
bitmap.c	md/bitmap: separate out loading a bitmap from initialising the structures.	2010-07-26 13:21:34 +10:00
bitmap.h	md/bitmap: separate out loading a bitmap from initialising the structures.	2010-07-26 13:21:34 +10:00
dm-bio-record.h	dm: preserve bi_io_vec when resubmitting bios	2009-04-02 19:55:23 +01:00
dm-crypt.c	dm: use dm_target_offset macro	2010-08-12 04:14:11 +01:00
dm-delay.c	dm delay: support discard	2010-08-12 04:14:13 +01:00
dm-exception-store.c	dm snapshot: test chunk size against both origin and snapshot	2010-08-12 04:13:51 +01:00
dm-exception-store.h	dm snapshot: test chunk size against both origin and snapshot	2010-08-12 04:13:51 +01:00
dm-io.c	block: unify flags for struct bio and struct request	2010-08-07 18:20:39 +02:00
dm-ioctl.c	dm: allow autoloading of dm mod	2010-08-12 04:14:05 +01:00
dm-kcopyd.c	block: unify flags for struct bio and struct request	2010-08-07 18:20:39 +02:00
dm-linear.c	dm: use dm_target_offset macro	2010-08-12 04:14:11 +01:00
dm-log-userspace-base.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
dm-log-userspace-transfer.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
dm-log-userspace-transfer.h	dm log: userspace add luid to distinguish between concurrent log instances	2009-09-04 20:40:34 +01:00
dm-log.c	dm table: remove unused dm_get_device range parameters	2010-03-06 02:32:27 +00:00
dm-mpath.c	dm mpath: support discard	2010-08-12 04:14:32 +01:00
dm-mpath.h	dm mpath: remove is_active from struct dm_path	2008-10-10 13:36:58 +01:00
dm-path-selector.c	dm: path selector use module refcount directly	2009-04-02 19:55:27 +01:00
dm-path-selector.h	dm mpath: add start_io and nr_bytes to path selectors	2009-06-22 10:12:27 +01:00
dm-queue-length.c	dm mpath: add queue length load balancer	2009-06-22 10:12:27 +01:00
dm-raid1.c	dm: use dm_target_offset macro	2010-08-12 04:14:11 +01:00
dm-region-hash.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
dm-round-robin.c	dm mpath: add start_io and nr_bytes to path selectors	2009-06-22 10:12:27 +01:00
dm-service-time.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
dm-snap-persistent.c	dm snapshot: persistent use define for disk header chunk size	2010-08-12 04:13:59 +01:00
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: rename map_info flush_request to target_request_nr	2010-08-12 04:14:04 +01:00
dm-stripe.c	dm stripe: support discards	2010-08-12 04:14:26 +01:00
dm-sysfs.c	Driver core: Constify struct sysfs_ops in struct kobj_type	2010-03-07 17:04:49 -08:00
dm-table.c	dm: linear support discard	2010-08-12 04:14:08 +01:00
dm-target.c	dm: error return error for discards	2010-08-12 04:14:14 +01:00
dm-uevent.c	dm table: remove dm_get from dm_table_get_md	2010-03-06 02:29:52 +00:00
dm-uevent.h	dm: uevent generate events	2007-10-20 02:01:26 +01:00
dm-zero.c	dm: zero silently drop discards	2010-08-12 04:14:12 +01:00
dm.c	dm: split discard requests on target boundaries	2010-08-12 04:14:24 +01:00
dm.h	dm: linear support discard	2010-08-12 04:14:08 +01:00
faulty.c	Merge commit '3ff195b011d7decf501a4d55aeed312731094796' into for-linus	2010-05-22 08:31:36 +10:00
Kconfig	Merge branch 'async' of macbook:git/btrfs-unstable	2010-08-09 10:36:44 +01:00
linear.c	block: unify flags for struct bio and struct request	2010-08-07 18:20:39 +02:00
linear.h	md/linear: use call_rcu to free obsolete 'conf' structures.	2009-06-18 08:49:42 +10:00
Makefile	Merge branch 'async' of macbook:git/btrfs-unstable	2010-08-09 10:36:44 +01:00
md.c	Merge branch 'for-linus' of git://neil.brown.name/md	2010-08-10 15:38:19 -07:00
md.h	Merge branch 'for-linus' of git://neil.brown.name/md	2010-08-10 15:38:19 -07:00
multipath.c	block: unify flags for struct bio and struct request	2010-08-07 18:20:39 +02:00
multipath.h	md: remove mddev_to_conf "helper" macro	2009-06-16 16:54:21 +10:00
raid0.c	block: unify flags for struct bio and struct request	2010-08-07 18:20:39 +02:00
raid0.h	md: fix handling of array level takeover that re-arranges devices.	2010-06-24 13:33:24 +10:00
raid1.c	block: unify flags for struct bio and struct request	2010-08-07 18:20:39 +02:00
raid1.h	md/raid1: add takeover support for raid5->raid1	2009-12-14 12:51:41 +11:00
raid5.c	Merge branch 'for-linus' of git://neil.brown.name/md	2010-08-10 15:38:19 -07:00
raid5.h	md/raid5: export raid5 unplugging interface.	2010-07-26 12:53:10 +10:00
raid10.c	Merge branch 'for-linus' of git://neil.brown.name/md	2010-08-10 15:38:19 -07:00
raid10.h	md: fix handling of array level takeover that re-arranges devices.	2010-06-24 13:33:24 +10:00