So I have this LXC container running docker with unprivileged,nesting=1 running fine, but just realize I created it on a raw image, which means snapshots take too long. I restored a snapshot to ZFS storage, which completed fine, but now docker no longer starts.
I get this error:
ERRO[2021-07-25T06:55:03.130281512Z] failed to mount overlay: invalid argument storage-driver=overlay2
ERRO[2021-07-25T06:55:03.130305791Z] [graphdriver] prior storage driver overlay2 failed: driver not supported
Any idea what could be going wrong and/or how to debug this?
I’ve been able to do this without any errors with other docker servers, so it feels like it’s something related to mailcow-dockerized. It’s the only stack on this server.