@probain Hello,
It's likely linked to the List index out of range bug.
That bug was linked to the SR scan failing to introduce CBT_metatadata VDI in the XAPI database, could you try to launch a xe sr-scan uuid=<SR UUID> and try again to disable CBT?
If it does not work, could you share the /var/log/SMlog of around the time you are trying to disable CBT?
@Mathieu-L
linstor n l was included in my original post.
All nodes were updated to May 2026 Security and Maintenance Updates for XCP-ng 8.3 LTS, all nodes were restarted.
May 2026 Updates #2 for XCP-ng 8.3 LTS was released, and a couple days later I installed on all hosts. No host restarted.
When xen04 was restarted, that is when this issue happened.
I had used systemctl restart linstor-controller here (https://xcp-ng.org/forum/post/105309) to restart the controller.