Orphaned VDI after backup - NBD issue

KPS

Hi!

I am having a problem with my XOCE system on commit 317e4, xo-server 5.107.5 and XCP-ng 8.2.

After every run of a delta-backup, there is a VDI, that is attached to the control-domain of one of the XCP-ng-nodes. If I do not manually handle this throug reboot and forget, the snapshot-chain of the VM is getting longer and longer, until no backups are possible.

SMLog is only showing:

Jan 26 07:45:52 xenpool4host1 SM: [7714] ['/sbin/lvchange', '-an', '/dev/VG_XenStorage-9f4a43ca-f00e-f575-4897-9298235982d8/VHD-3c2f0bdc-093d-451b-b19e-7c099e354c13']
Jan 26 07:45:52 xenpool4host1 SM: [7714] lock: released /var/lock/sm/lvm-9f4a43ca-f00e-f575-4897-9298235982d8/3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:45:52 xenpool4host1 SMGC: [7714] Updated the vhd-parent field for child 3c2f0bdc-093d-451b-b19e-7c099e354c13 with d9022d81-2c9f-4f5f-8c7c-0d9e537fc14e
Jan 26 07:45:53 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:46:12 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:46:35 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:46:52 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:47:08 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:48:20 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:48:38 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:48:56 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:49:30 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:49:44 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:50:01 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:51:31 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13
Jan 26 07:52:16 xenpool4host1 SM: [7714] Refresh request for 3c2f0bdc-093d-451b-b19e-7c099e354c13

...every 30s.

Do you have any idea, why this happens and what I can do?

On XOCE, NBD is activated, but not used for that job.

Thank you and best wishes
KPS

KPS

This post is deleted!

KPS

Hi!

I was able to isolate the issue: It does happen, if NBD is activated on one of the network interfaces!

 xe network-param-remove param-name=purpose param-key=nbd uuid=xxxxxxxx

--> Disabling "useNBD" did not solve the issue. I had to disable the feature in XCP-ng