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>
Read the documentation in qemu-doc.html. Fabrice Bellard.
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