From: Mikulas Patocka <mpatocka@redhat.com>
Date: Thu, 10 Dec 2009 23:52:36 +0000 (+0000)
Subject: dm snapshot: use merge origin if snapshot invalid
X-Git-Tag: v2.6.33-rc1~75^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d2fdb776e08d4231d7e86a879cc663a93913c202;p=pandora-kernel.git

dm snapshot: use merge origin if snapshot invalid

If the snapshot we are merging became invalid (e.g. it ran out of
space) redirect all I/O directly to the origin device.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
---

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