Re: [PATCH v2 10/22] migration/block-dirty-bitmap: cancel migration on shutdown

[Eric Blake]

On 2/17/20 9:02 AM, Vladimir Sementsov-Ogievskiy wrote:
> If target is turned of prior to postcopy finished, target crashes

s/of/off/

> because busy bitmaps are found at shutdown.
> Canceling incoming migration helps, as it removes all unfinished (and
> therefore busy) bitmaps.
>
> Similarly on source we crash in bdrv_close_all which asserts that all
> bdrv states are removed, because bdrv states involved into dirty bitmap
> migration are referenced by it. So, we need to cancel outgoing
> migration as well.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> ---

--
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org