Hi Jeremy, Can you check the backup async jobs log? It may be a timeout issue. Enable debug verbosity in the KVM agent : $sed -i 's/INFO/DEBUG/g' /etc/cloudstack/agent/log4j-cloud.xml
-Jithin From: Jeremy Hansen <[email protected]> Date: Saturday, 7 February 2026 at 3:53 AM To: [email protected] <[email protected]> Subject: Re: Issue with backups on large data volumes I was able to do a couple instances with 100G data volumes and it worked fine but this one instance witht he 512G volume fails. -jeremy On Friday, Feb 06, 2026 at 1:27 PM, Jeremy Hansen <[email protected]<mailto:[email protected]>> wrote: I’m trying to work through the new backup features in 4.22. Instances with no data disk seem to work well, but I have a few instances with very large data disks and for some reason, the backup just disappears from “In Progress” and the data disk never completes. I tried twice on the same instance and the data disk seems to stop at the same byte count. i-4-65-VM]# du -sk */* 65792 2026.02.06.08.11.44/datadisk.aab61212-c1df-48c7-9abc-3d2a47d37468.qcow2 6 2026.02.06.08.11.44/domain-config.xml 1 2026.02.06.08.11.44/domblklist.xml 1 2026.02.06.08.11.44/domiflist.xml 1 2026.02.06.08.11.44/dominfo.xml 20974976 2026.02.06.08.11.44/root.8a60af8e-c138-4193-aece-a0bfe89a6fa3.qcow2 65792 2026.02.06.16.17.29/datadisk.aab61212-c1df-48c7-9abc-3d2a47d37468.qcow2 6 2026.02.06.16.17.29/domain-config.xml 1 2026.02.06.16.17.29/domblklist.xml 1 2026.02.06.16.17.29/domiflist.xml 1 2026.02.06.16.17.29/dominfo.xml 20974976 2026.02.06.16.17.29/root.8a60af8e-c138-4193-aece-a0bfe89a6fa3.qcow2 This instance’s data disk is a 512.00 GB volume on Ceph. Any info on this would be appreciated. I’m trying to use these backups to restore to a different location. So far instances without a data disk work fine. -jeremy
