Dear maintainer, dear Dio Putra, I was hit by this too when upgrading LXC-heavy machines to Debian stable. The patch proposed by Dio Putra [1] fixes the issue for me (I built libvirt 7.0.0-3 from salsa with that patch applied). The only caveat I found was that if you previously tried to destroy an LXC domain with unpatched 7.0.0-3, the destroy would still fail with this patch, but with a different error message:
error: Failed to destroy domain 'router' error: Unable to read from '/sys/fs/cgroup/machine.slice/machine- lxc\x2d1207\x2drouter.scope/cgroup.controllers': No such file or directory I do consider this a lesser issue with the patch, given that without the patch, destroy won't ever work. A reboot rectifies the situation (restart of libvirtd does not seem to suffice). If the domain has not been attempted to be destroyed with 7.0.0-3, a destroy works flawlessly after upgrading to the patched version. Please apply the patch and provide an update to Debian stable, as this breaks the libvirt-lxc usecase heavily. kind regards, Jonas [1]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=983871#30
