[PATCH] qemu: Revoke access to mirror on failed blockcopy

[Daniel Henrique Barboza]

On 4/14/20 6:32 AM, Michal Privoznik wrote:
> When preparing to do a blockcopy, the mirror image is modified so
> that QEMU can access it. For instance, the mirror has seclabels
> set, if it is a NVMe disk it is detached from the host and so on.
> And usually, the restore is done upon successful finish of the
> blockcopy operation. But, if something fails then we need to
> explicitly revoke the access to the mirror image (and thus
> reattach NVMe disk back to the host).
> 
> Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1822538
> 
> Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
> ---

Reviewed-by: Daniel Henrique Barboza <danielhb413 at gmail.com>