commit 2547caa16964e3082efdd25e50120c0a35ef5252
author Kevin Wolf <kwolf@redhat.com> Fri Oct 15 07:53:00 2010 -0700
committer Kevin Wolf <kwolf@redhat.com> Wed Feb 22 16:17:03 2012 +0100
tree 23167b58468c1b28fd0a446a81c56214c98b8218
parent 72bb202583ad71f3e9e0c03a0c9a3baa0db16494

qemu-iotests: improve test for qemu-img convert with backing file

Additionally to testing the qemu-img convert -B option, also test
-o backing_file.

Also, the old test acidentlly used a pattern of zeros for most of the writes,
so that the allocation test didn't really work out. This is fixed by using an
explicit pattern.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>