Re: [PATCH] iotests: 194: wait migration completion on target too

[Thomas Huth]

On 04/06/2020 10.33, Vladimir Sementsov-Ogievskiy wrote:
> It is possible, that shutdown on target occurs earlier than migration
> finish. In this case we crash in bdrv_release_dirty_bitmap_locked()
> on assertion "assert(!bdrv_dirty_bitmap_busy(bitmap));" as we do have
> busy bitmap, as bitmap migration is ongoing.
> 
> We'll fix bitmap migration to gracefully cancel on early shutdown soon.
> Now let's fix iotest 194 to wait migration completion before shutdown.
> 
> Note that in this test dest_vm.shutdown() is called implicitly, as vms
> used as context-providers, see __exit__() method of QEMUMachine class.
> 
> Actually, not waiting migration finish is a wrong thing, but the test
> started to crash after commit ae00aa239847682
> "iotests: 194: test also migration of dirty bitmap", which added dirty
> bitmaps here. So, Fixes: tag won't hurt.
> 
> Fixes: ae00aa2398476824f0eca80461da215e7cdc1c3b
> Reported-by: Thomas Huth <thuth@redhat.com>
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> ---
>  tests/qemu-iotests/194     | 10 ++++++++++
>  tests/qemu-iotests/194.out |  5 +++++
>  2 files changed, 15 insertions(+)

Thanks, this fixes the issue in the gitlab CI:

 https://gitlab.com/huth/qemu/-/jobs/580902477#L3780

Tested-by: Thomas Huth <thuth@redhat.com>