"The stop hook failed" + Deletion fails

1

Hey,

Since a bit, stopping containers fails, I think it has to do with the new LXD versions, since it worked before. Currently I am using LXD 4.0.x stable on a few Ubuntu 20.04 servers.

All what I get is this:

location: none
metadata:
context:
container: machina
err: ‘Failed to deactivate LVM logical volume “/dev/primary/containers_machina”: Failed to run: lvchange --activate n --ignoreactivationskip /dev/primary/containers_machina: Logical volume primary/containers_machina contains a filesystem in use.’
level: eror
message: The stop hook failed
timestamp: “2020-08-15T14:15:03.037474884+02:00”
type: logging

I do not understand why this is happening, all worked fine before.
The container has nothing running on it, nothing that could block that.

Any ideas?

2

It also appears to happen with deletion of a container.

3

A restart seems to fix it… interesting.
Question is, what was the cause or is it likely to happen again?

4

Anyone got an idea? it repeats itself over and over again.
It does also affect multiple nodes independently.

5

Try grep containers_machina /proc/*/mountinfo that may locate any process which still has this thing mounted, preventing the deletion.