<![CDATA[Missing vdi which is a base for a delta]]>Our mirror backup jobs continue to fail about 50% of the VMs with this Missing vdi which is a base for a delta error. I have deleted the data from the remote(s) and the problem comes right back. I'm not sure what is causing it. The backups on the source remote pass health checks.

]]>https://xcp-ng.org/forum/topic/12552/missing-vdi-which-is-a-base-for-a-deltaRSS for NodeMon, 26 Oct 2026 21:19:59 GMTMon, 26 Oct 2026 19:18:54 GMT60<![CDATA[Reply to Missing vdi which is a base for a delta on Mon, 26 Oct 2026 20:28:30 GMT]]>@blueh2o

Are you using XOA or XO from sources? If the later what Commit are you on? Did you install the recent beta updates for your hosts?

Can you post the log of the the failed backups.

]]>https://xcp-ng.org/forum/post/109320https://xcp-ng.org/forum/post/109320Mon, 26 Oct 2026 20:28:30 GMT<![CDATA[Reply to Missing vdi which is a base for a delta on Mon, 26 Oct 2026 20:08:47 GMT]]>I've just removed ALL the backups for one VM and created a new Full backup; When I run the mirror job it again says Missing vdi f04fb96a-5923-4c75-bb42-6c916497885c which is a base for a delta.

]]>https://xcp-ng.org/forum/post/109318https://xcp-ng.org/forum/post/109318Mon, 26 Oct 2026 20:08:47 GMT