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| author |   NeilBrown <neilb@suse.de> | 2006-03-27 01:18:14 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-27 08:45:02 -0800 |
| commit | e464eafdb4400c6d6576ba3840d8bd40340f8a96 (patch) | |
| tree | 0c3f4003c883264ee08300c02007f06e4d1ebb91 /README | |
| parent | [PATCH] md: Make 'reshape' a possible sync_action action (diff) | |
| download | linux-dev-e464eafdb4400c6d6576ba3840d8bd40340f8a96.tar.xz linux-dev-e464eafdb4400c6d6576ba3840d8bd40340f8a96.zip | |
[PATCH] md: Support suspending of IO to regions of an md array
This allows user-space to access data safely. This is needed for raid5
reshape as user-space needs to take a backup of the first few stripes before
allowing reshape to commence.
It will also be useful in cluster-aware raid1 configurations so that all
cluster members can leave a section of the array untouched while a
resync/recovery happens.
A 'start' and 'end' of the suspended range are written to 2 sysfs attributes.
Note that only one range can be suspended at a time.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'README')
0 files changed, 0 insertions, 0 deletions