tree 2ea0699ee2730492ec145bf681d8c75bcafe3ee4
parent b93af93d2bbacf034af1888c96291850aa849b59
author Jes Sorensen <Jes.Sorensen@redhat.com> 1299666030 +0100
committer Kevin Wolf <kwolf@redhat.com> 1300191674 +0100

Improve error handling in do_snapshot_blkdev()

In case we cannot open the newly created snapshot image, try to fall
back to the original image file and continue running on that, which
should prevent the guest from aborting.

This is a corner case which can happen if the admin by mistake
specifies the snapshot file on a virtual file system which does not
support O_DIRECT. bdrv_create() does not use O_DIRECT, but the
following open in bdrv_open() does and will then fail.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>