Re: [libvirt] [PATCH] qemu: Allow empty script path to <interface/>

On Thu, Feb 02, 2017 at 04:21:39PM +0100, Michal Privoznik wrote: > On 02/02/2017 02:56 PM, Daniel P. Berrange wrote: > > On Thu, Feb 02, 2017 at 02:49:48PM +0100, Michal Privoznik wrote: > >> Before 9c17d665fdc5f (v1.3.2 - I know, right?) it was possible to > >> have the following interface configuration: > >> > >> <interface type='ethernet'/> > >> <script path=''/> > >> </interface> > >> > >> This resulted in -netdev tap,script=,.. Fortunately, qemu helped > >> us to get away with this as it just ignored the empty script > >> path. However, after the commit mentioned above it's libvirtd > >> who is executing the script. Unfortunately without special > >> case-ing empty script path. > >> > >> Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; > > > > This was always invalid input and the fact that it happened > > to work in the past is just luck. Since this has been broken since > > 1.3.2 there's plenty of libvirt releases that reject this, and so > > any app realistically has to be fixed to omit the <script> entirely > > if they want any portability. As such I don't think we need to "fix" > > this. > > Fair enough. Although, 1.3.2 was not that long time ago (~a year). BTW: > it's openstack who is still using this. > > https://bugzilla.redhat.com/show_bug.cgi?id=1412834

Seems nova has already been fixed in both master & stable branches https://bugs.launchpad.net/nova/+bug/1649527