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NeilBrown ac4090d24c Don't let a blocked_rdev interfere with read request in raid5/6 
When we have externally managed metadata, we need to mark a failed
device as 'Blocked' and not allow any writes until that device
have been marked as faulty in the metadata and the Blocked flag has
been removed.

However it is perfectly OK to allow read requests when there is a
Blocked device, and with a readonly array, there may not be any
metadata-handler watching for blocked devices.

So in raid5/raid6 only allow a Blocked device to interfere with
Write request or resync.  Read requests go through untouched.

raid1 and raid10 already differentiate between read and write
properly.

Signed-off-by: NeilBrown <neilb@suse.de>
2008-08-05 15:56:32 +10:00
..
raid6test md: raid6: clean up the style of raid6test/test.c 2008-02-06 10:41:18 -08:00
.gitignore
bitmap.c md: the bitmap code needs to use blk_plug_device_unlocked() 2008-08-01 20:32:31 +02:00
dm-bio-list.h dm: bio_list macro renaming 2007-10-20 02:01:11 +01:00
dm-bio-record.h
dm-crypt.c dm crypt: add merge 2008-07-21 12:00:40 +01:00
dm-delay.c dm: bio_list macro renaming 2007-10-20 02:01:11 +01:00
dm-exception-store.c dm: move include files 2008-04-25 13:26:55 +01:00
dm-io.c dm: unplug queues in threads 2008-04-25 13:26:57 +01:00
dm-ioctl.c dm ioctl: use uninitialized_var 2008-02-08 02:10:16 +00:00
dm-kcopyd.c dm: unplug queues in threads 2008-04-25 13:26:57 +01:00
dm-linear.c dm: linear add merge 2008-07-21 12:00:38 +01:00
dm-log.c dm log: make dm_dirty_log init and exit static 2008-07-21 12:00:27 +01:00
dm-mpath.c [SCSI] scsi_dh: attach to hardware handler from dm-mpath 2008-07-26 15:14:53 -04:00
dm-mpath.h [SCSI] scsi_dh: Remove hardware handler infrastructure from dm 2008-06-05 09:23:42 -05:00
dm-path-selector.c dm: use kzalloc 2007-10-20 02:01:07 +01:00
dm-path-selector.h [PATCH] struct path: rename DM's struct path 2006-12-08 08:28:40 -08:00
dm-raid1.c dm: unplug queues in threads 2008-04-25 13:26:57 +01:00
dm-round-robin.c dm: remove duplicate module name from error msgs 2007-07-12 15:01:08 -07:00
dm-snap.c dm snapshot: use per device mempools 2008-07-21 12:00:35 +01:00
dm-snap.h dm snapshot: use per device mempools 2008-07-21 12:00:35 +01:00
dm-stripe.c dm: stripe enhanced status return 2008-02-08 02:11:24 +00:00
dm-table.c [PATCH] switch mtd and dm-table to lookup_bdev() 2008-08-01 11:25:31 -04:00
dm-target.c dm: use kzalloc 2007-10-20 02:01:07 +01:00
dm-uevent.c md: replace remaining __FUNCTION__ occurrences 2008-04-28 08:58:42 -07:00
dm-uevent.h dm: uevent generate events 2007-10-20 02:01:26 +01:00
dm-zero.c Drop 'size' argument from bio_endio and bi_end_io 2007-10-10 09:25:57 +02:00
dm.c dm: introduce merge_bvec_fn 2008-07-21 12:00:37 +01:00
dm.h dm log: make dm_dirty_log init and exit static 2008-07-21 12:00:27 +01:00
faulty.c md: Make mddev->array_size sector-based. 2008-07-21 17:05:22 +10:00
Kconfig [SCSI] scsi_dh: fix kconfig related build errors 2008-07-15 09:16:43 -05:00
linear.c Merge branch 'for-linus' of git://neil.brown.name/md 2008-07-21 10:29:12 -07:00
Makefile [SCSI] scsi_dh: Remove hardware handler infrastructure from dm 2008-06-05 09:23:42 -05:00
md.c Fail safely when trying to grow an array with a write-intent bitmap. 2008-08-05 15:56:32 +10:00
mktables.c md: raid6: Fix mktable.c 2008-02-06 10:41:18 -08:00
multipath.c md: Make mddev->array_size sector-based. 2008-07-21 17:05:22 +10:00
raid0.c Merge branch 'for-linus' of git://neil.brown.name/md 2008-07-21 10:29:12 -07:00
raid1.c md: Make mddev->array_size sector-based. 2008-07-21 17:05:22 +10:00
raid5.c Don't let a blocked_rdev interfere with read request in raid5/6 2008-08-05 15:56:32 +10:00
raid6.h
raid6algos.c drivers/md: use time_before, time_before_eq, etc 2008-04-28 08:58:42 -07:00
raid6altivec.uc
raid6int.uc
raid6mmx.c x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid6recov.c
raid6sse1.c x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid6sse2.c x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid6x86.h x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid10.c Merge branch 'for-linus' of git://neil.brown.name/md 2008-08-01 11:56:07 -07:00
unroll.pl