[ceph-users] Octopus upgrade breaks Ubuntu 18.04 libvirt

Hello, I've upgraded ceph to Octopus (15.2.3 from repo) on one of the Ubuntu 18.04 host servers. The update caused problem with libvirtd which hangs when it tries to access the storage pools. The problem doesn't exist on Nautilus. The libvirtd process simply hangs. Nothing seem to happen. The log file for the libvirtd shows: 2020-06-29 19:30:51.556+0000: 12040: debug : virNetlinkEventCallback:707 : dispatching to max 0 clients, called from event watch 11 2020-06-29 19:30:51.556+0000: 12040: debug : virNetlinkEventCallback:720 : event not handled. 2020-06-29 19:30:51.556+0000: 12040: debug : virNetlinkEventCallback:707 : dispatching to max 0 clients, called from event watch 11 2020-06-29 19:30:51.556+0000: 12040: debug : virNetlinkEventCallback:720 : event not handled. 2020-06-29 19:30:51.557+0000: 12040: debug : virNetlinkEventCallback:707 : dispatching to max 0 clients, called from event watch 11 2020-06-29 19:30:51.557+0000: 12040: debug : virNetlinkEventCallback:720 : event not handled. 2020-06-29 19:30:51.591+0000: 12040: debug : virNetlinkEventCallback:707 : dispatching to max 0 clients, called from event watch 11 2020-06-29 19:30:51.591+0000: 12040: debug : virNetlinkEventCallback:720 : event not handled. Running strace on the libvirtd process shows: root@ais-cloudhost1:/home/andrei# strace -p 12040 strace: Process 12040 attached restart_syscall(<... resuming interrupted poll ...> Nothing happens after that point. The same host server can get access to the ceph cluster and the pools by running ceph -s or rbd -p <pool> ls -l commands for example. Need some help to get the host servers working again with Octopus. Cheers