Comment 1 for bug 1901783

This seems to indicate that "lvs" (or cinder-rootwrap?) is segfaulting:

Oct 27 22:05:05.253823 ubuntu-focal-ovh-bhs1-0021096768 cinder-volume[54880]: ERROR oslo_messaging.rpc.server Command: sudo cinder-rootwrap /etc/cinder/rootwrap.conf env LC_ALL=C lvs --noheadings --unit=g -o vg_name,name,size --nosuffix stack-volumes-lvmdriver-1/volume-241d7f3b-a717-43e4-a8d7-ca730cf714ba
Oct 27 22:05:05.253823 ubuntu-focal-ovh-bhs1-0021096768 cinder-volume[54880]: ERROR oslo_messaging.rpc.server Exit code: 139

We should confirm in syslog and see if there's an Ubuntu issue to chase there.