Re: [PATCH v2 33/33] iotests/image-fleecing: add test-case for copy-before-write filter

[Max Reitz <mreitz@redhat.com>]

On 20.05.21 16:22, Vladimir Sementsov-Ogievskiy wrote:
> New fleecing method becomes available: copy-before-write filter.
>
> Actually we don't need backup job to setup image fleecing. Add test
> for new recommended way of image fleecing.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> ---
>   tests/qemu-iotests/tests/image-fleecing     | 50 +++++++++-----
>   tests/qemu-iotests/tests/image-fleecing.out | 72 +++++++++++++++++++++
>   2 files changed, 107 insertions(+), 15 deletions(-)
>
> diff --git a/tests/qemu-iotests/tests/image-fleecing b/tests/qemu-iotests/tests/image-fleecing
> index e210c00d28..404ebc00f1 100755
> --- a/tests/qemu-iotests/tests/image-fleecing
> +++ b/tests/qemu-iotests/tests/image-fleecing

[...]

> @@ -90,12 +91,22 @@ def do_test(base_img_path, fleece_img_path, nbd_sock_path, vm):
>           'backing': src_node,
>       }))
>   
> -    # Establish COW from source to fleecing node
> -    log(vm.qmp('blockdev-backup',
> -               job_id='fleecing',
> -               device=src_node,
> -               target=tmp_node,
> -               sync='none'))
> +    # Establish CBW from source to fleecing node
> +    if use_cbw:
> +        log(vm.qmp('blockdev-add', **{

I thought this should work without ** now.

With them dropped:

Reviewed-by: Max Reitz <mreitz@redhat.com>

> +            'driver': 'copy-before-write',
> +            'node-name': 'fl-cbw',
> +            'file': src_node,
> +            'target': tmp_node
> +        }))
> +
> +        log(vm.qmp('qom-set', path=qom_path, property='drive', value='fl-cbw'))
> +    else:
> +        log(vm.qmp('blockdev-backup',
> +                   job_id='fleecing',
> +                   device=src_node,
> +                   target=tmp_node,
> +                   sync='none'))
>   
>       log('')
>       log('--- Setting up NBD Export ---')