Re: [PATCH 4/5] iotests: make qemu_img raise on non-zero rc by default

[Eric Blake]

On Thu, Mar 03, 2022 at 03:59:01PM -0500, John Snow wrote:
> re-write qemu_img() as a function that will by default raise a
> VerboseProcessException (extended from CalledProcessException) on
> non-zero return codes. This will produce a stack trace that will show
> the command line arguments and return code from the failed process run.
> 
> Users that want something more flexible (there appears to be only one)
> can use check=False and manage the return themselves. However, when the
> return code is negative, the Exception will be raised no matter what.
> This is done under the belief that there's no legitimate reason, even in
> negative tests, to see a crash from qemu-img.
> 
> Signed-off-by: John Snow <jsnow@redhat.com>
> ---
>  tests/qemu-iotests/257        |  8 ++++--
>  tests/qemu-iotests/iotests.py | 54 +++++++++++++++++++++++++++++++----
>  2 files changed, 53 insertions(+), 9 deletions(-)
>

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org