Re: [PATCH v3 2/2] iotests: test NBD+TLS+iothread

["Daniel P. Berrangé" <berrange@redhat.com>]

On Fri, May 31, 2024 at 01:04:59PM -0500, Eric Blake wrote:
> Prevent regressions when using NBD with TLS in the presence of
> iothreads, adding coverage the fix to qio channels made in the
> previous patch.
> 
> The shell function pick_unused_port() was copied from
> nbdkit.git/tests/functions.sh.in, where it had all authors from Red
> Hat, agreeing to the resulting relicensing from 2-clause BSD to GPLv2.
> 
> CC: qemu-stable@nongnu.org
> CC: "Richard W.M. Jones" <rjones@redhat.com>
> Signed-off-by: Eric Blake <eblake@redhat.com>
> ---
>  tests/qemu-iotests/tests/nbd-tls-iothread     | 168 ++++++++++++++++++
>  tests/qemu-iotests/tests/nbd-tls-iothread.out |  54 ++++++
>  2 files changed, 222 insertions(+)
>  create mode 100755 tests/qemu-iotests/tests/nbd-tls-iothread
>  create mode 100644 tests/qemu-iotests/tests/nbd-tls-iothread.out



> +# pick_unused_port
> +#
> +# Picks and returns an "unused" port, setting the global variable
> +# $port.
> +#
> +# This is inherently racy, but we need it because qemu does not currently
> +# permit NBD+TLS over a Unix domain socket
> +pick_unused_port ()
> +{
> +    if ! (ss --version) >/dev/null 2>&1; then
> +        _notrun "ss utility required, skipped this test"
> +    fi
> +
> +    # Start at a random port to make it less likely that two parallel
> +    # tests will conflict.
> +    port=$(( 50000 + (RANDOM%15000) ))
> +    while ss -ltn | grep -sqE ":$port\b"; do
> +        ((port++))
> +        if [ $port -eq 65000 ]; then port=50000; fi
> +    done
> +    echo picked unused port
> +}

In retrospect I'd probably have suggested putting this into
common.qemu as its conceptually independant of this test.


That's not a blocker though so

  Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

With regards,
Daniel
-- 
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|