Problems with removing an LXC template

[da-alb]

Hi,

I have an LXC template that cannot be removed.
Previously it was an LXC container on Ceph (RBD).

The error is the following, I have checked and there are 0 LXC containers linked to it.

Removing all snapshots: 100% complete...
Removing all snapshots: 100% complete...done.
2021-02-09T10:39:34.149+0100 7f2daeffd700 -1 librbd::image::PreRemoveRequest: 0x55a024889670 check_image_watchers: image has watchers - not removing
Removing image: 0% complete...failed.
rbd: error: image still has watchers
TASK ERROR: error during cfs-locked 'storage-local2' operation: rbd rm 'base-9000-disk-0' error: rbd: error: image still has watchers

What can I do? I tried moving the disk from ceph storage to lvm local storage and it didn't work.

 

[Alwin Antreich]

This error is related to your other thread?
https://forum.proxmox.com/threads/problem-deleting-lxc-templates-proxmox-ve-ceph.46711/#post-368752

rbd: error: image still has watchers

The Image is still "used" or at least open on one of the nodes.

 

[da-alb]

This error is related to your other thread?
https://forum.proxmox.com/threads/problem-deleting-lxc-templates-proxmox-ve-ceph.46711/#post-368752


The Image is still "used" or at least open on one of the nodes.

Hi Alwin,

The error is similar to the other thread opened by the other user, Johan.

The solution is to unmap the block? Should I reboot the node after that?

 

[Alwin Antreich]

The solution is to unmap the block? Should I reboot the node after that?

If it is still mapped, yes. A reboot should not be needed. The image watchers are any rbd client, not only the kernel (mapped devices).

 

[da-alb]

If it is still mapped, yes. A reboot should not be needed. The image watchers are any rbd client, not only the kernel (mapped devices).

An update, unmapping the block solved the issue.

Thanks