After extensive testing of this patch on Fedora Rawhide, and RHEL 7 and 8, I pushed a slightly modified version (contains a fix for a memory leak, and another which fixes the reverse name translation) upstream. The patch I pushed ran in a loop for 48+ hours with up to 255 disks without failing, and also passes the full test suite. However there's no getting round it, it's still a risky patch. So if you see any regressions which might be related to disk naming / numbering (if you are using Linux >= 5.6 or RHEL AV 8.2) then please let us know. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top