From: NeilBrown Date: Mon, 27 Mar 2006 09:18:14 +0000 (-0800) Subject: [PATCH] md: Support suspending of IO to regions of an md array X-Git-Tag: v2.6.17-rc1~284 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e464eafdb4400c6d6576ba3840d8bd40340f8a96;p=pandora-kernel.git [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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Reading git-diff-tree failed