[libvirt] 5.6.0 regression: "Some activation file descriptors are unclaimed"

[Allen, John]

On Mon, Aug 19, 2019 at 01:30:06PM +0100, Daniel P. Berrangé wrote:
> On Mon, Aug 19, 2019 at 12:15:48PM +0000, Allen, John wrote:
> > On Mon, Aug 19, 2019 at 12:24:43PM +0100, Daniel P. Berrangé wrote:
> > > On Wed, Aug 14, 2019 at 01:30:26PM +0000, Allen, John wrote:
> > > > After upgrading to v5.6.0, starting libvirtd fails with the following message
> > > > in journalctl -xe:
> > > > 
> > > > libvirtd[186338]: internal error: Some activation file descriptors are unclaimed
> > > > 
> > > > 5b8569dd6e284b9159c701e8bffafb196983fc4a introduces the message. The commit
> > > > message indicates that systemd version 227 is required, but my system seems to
> > > > be running version 237.
> > > > 
> > > > Is this a known issue? Is there any other configuration for systemd needed to
> > > > avoid the problem?
> > > 
> > > Can you tell me what operating system you are seeing this on ?
> > 
> > This is on Ubuntu 18.04.2
> > 
> > > 
> > > Also, can you confirm that you're using the stock unit files that libvirt
> > > distributes, with no local customizations ?
> > 
> > As far as I'm aware there are no modifications to the unit file. I produced
> > the problem by just pulling libvirt 5.6.0 and running:
> > 
> > 	./autogen.sh --system
> > 	make
> > 	make install
> > 	service libvirtd start
> 
> Ok, I'll try to reproduce myself.
> 
> One other question - did you have the official Ubuntu libvirt packages
> installed at the time you did "make install", or did you uninstall them
> first ?

Initially, I had installed over the ubuntu libvirt packages. However, I
suspected that something may have "lingered" from the distro packages causing
the issue, but I was able to produce the issue on a fresh install with no
ubuntu libvirt packages installed as well.