Mike Snitzer a490a07a67 dm mpath: allow table load with no priority groups ... This patch adjusts the multipath target to allow a table with both 0 priority groups and 0 for the initial priority group number. If any mpath device is held open when all paths in the last priority group have failed, userspace multipathd will attempt to reload the associated DM table to reflect the fact that the device no longer has any priority groups. But the reload attempt always failed because the multipath target did not allow 0 priority groups. All multipath target messages related to priority group (enable_group, disable_group, switch_group) will handle a priority group of 0 (will cause error). When reloading a multipath table with 0 priority groups, userspace multipathd must be updated to specify an initial priority group number of 0 (rather than 1). Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: Babu Moger <babu.moger@lsi.com> Acked-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Alasdair G Kergon <agk@redhat.com>		2011-03-24 13:54:33 +00:00
..
bitmap.c	md: Don't let implementation detail of curr_resync leak out through sysfs.	2011-01-14 09:14:34 +11:00
bitmap.h	md: use sector_t in bitmap_get_counter	2010-10-28 17:32:26 +11:00
dm-bio-record.h	dm: preserve bi_io_vec when resubmitting bios	2009-04-02 19:55:23 +01:00
dm-crypt.c	dm crypt: wipe keys string immediately after key is set	2011-03-24 13:54:27 +00:00
dm-delay.c	dm: convert workqueues to alloc_ordered	2011-01-13 19:59:57 +00:00
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-flakey.c	dm: add flakey target	2011-03-24 13:54:24 +00:00
dm-io.c	dm: implement REQ_FLUSH/FUA support for bio-based dm	2010-09-10 12:35:38 +02:00
dm-ioctl.c	dm ioctl: add flag to wipe buffers for secure data	2011-03-24 13:54:30 +00:00
dm-kcopyd.c	dm: use non reentrant workqueues if equivalent	2011-01-13 19:59:58 +00:00
dm-linear.c	dm: use dm_target_offset macro	2010-08-12 04:14:11 +01:00
dm-log-userspace-base.c	dm log userspace: add version number to comms	2011-01-13 19:59:52 +00:00
dm-log-userspace-transfer.c	netlink: kill eff_cap from struct netlink_skb_parms	2011-03-03 13:32:07 -08:00
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: fix opening log and cow devices for read only tables	2011-03-24 13:52:14 +00:00
dm-mpath.c	dm mpath: allow table load with no priority groups	2011-03-24 13:54:33 +00:00
dm-mpath.h
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 non reentrant workqueues if equivalent	2011-01-13 19:59:58 +00:00
dm-raid.c	dm: raid456 basic support	2011-01-13 20:00:02 +00:00
dm-region-hash.c	dm: implement REQ_FLUSH/FUA support for bio-based dm	2010-09-10 12:35:38 +02:00
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 make metadata_wq multithreaded	2011-01-13 19:59:59 +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: fix opening log and cow devices for read only tables	2011-03-24 13:52:14 +00:00
dm-stripe.c	dm stripe: switch from local workqueue to system_wq	2011-01-13 19:59:57 +00:00
dm-sysfs.c	Driver core: Constify struct sysfs_ops in struct kobj_type	2010-03-07 17:04:49 -08:00
dm-table.c	block: restore multiple bd_link_disk_holder() support	2011-01-14 18:44:22 +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-zero.c	dm: zero silently drop discards	2010-08-12 04:14:12 +01:00
dm.c	dm: remove superfluous irq disablement in dm_request_fn	2011-01-13 20:00:00 +00:00
dm.h	dm: linear support discard	2010-08-12 04:14:08 +01:00
faulty.c	md: use separate bio pool for each md device.	2010-10-28 17:36:15 +11:00
Kconfig	dm: add flakey target	2011-03-24 13:54:24 +00:00
linear.c	md: avoid spinlock problem in blk_throtl_exit	2011-02-21 18:25:57 +11:00
linear.h	md/linear: use call_rcu to free obsolete 'conf' structures.	2009-06-18 08:49:42 +10:00
Makefile	dm: add flakey target	2011-03-24 13:54:24 +00:00
md.c	Merge branch 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2011-03-16 08:20:19 -07:00
md.h	md: Fix - again - partition detection when array becomes active	2011-02-24 17:26:41 +11:00
multipath.c	md: avoid spinlock problem in blk_throtl_exit	2011-02-21 18:25:57 +11:00
multipath.h	md: remove mddev_to_conf "helper" macro	2009-06-16 16:54:21 +10:00
raid0.c	md: avoid spinlock problem in blk_throtl_exit	2011-02-21 18:25:57 +11:00
raid0.h	md: fix handling of array level takeover that re-arranges devices.	2010-06-24 13:33:24 +10:00
raid1.c	md: avoid spinlock problem in blk_throtl_exit	2011-02-21 18:25:57 +11:00
raid1.h	md/raid1: discard unused variable.	2010-10-29 16:40:33 +11:00
raid5.c	md: avoid spinlock problem in blk_throtl_exit	2011-02-21 18:25:57 +11:00
raid5.h	md: implment REQ_FLUSH/FUA support	2010-09-10 12:35:38 +02:00
raid10.c	md: avoid spinlock problem in blk_throtl_exit	2011-02-21 18:25:57 +11:00
raid10.h	md: fix handling of array level takeover that re-arranges devices.	2010-06-24 13:33:24 +10:00