On 07/17/2017 07:34 PM, John Snow wrote: > For both external_snapshot_prepare and qmp_drive_mirror, we eventually > append the option BDRV_O_NO_BACKING. However, we generally do so after > we create the image. > > To accommodate image creation wanting to verify that a backing file > exists or not, add this option prior to create to override checking > the existence of the backing file. This prevents QEMU from trying to > re-open a backing file that's already in use (thanks to qcow2 locking). > > Signed-off-by: John Snow <js...@redhat.com> > --- > blockdev.c | 11 ++++++----- > 1 file changed, 6 insertions(+), 5 deletions(-)
Reviewed-by: Eric Blake <ebl...@redhat.com> -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org
signature.asc
Description: OpenPGP digital signature
