Not sure if Docker, LXD, or btrfs. "user_subvol_rm_allowed" is enabled, issue only started appearing recently, unsure if due to Docker upgrade or LXD upgrade. Observed this error earlier but "user_subvol_rm_allowed" resolved it. However, with it enabled it still occurs now.
me@host: lxd --version 2.4.1 root@docker:~# docker info Containers: 2 Running: 0 Paused: 0 Stopped: 2 Images: 1 Server Version: 1.12.1 Storage Driver: btrfs Build Version: Btrfs v4.7 Library Version: 101 Logging Driver: json-file Cgroup Driver: cgroupfs Plugins: Volume: local Network: null host bridge overlay Swarm: inactive Runtimes: runc Default Runtime: runc Security Options: apparmor Kernel Version: 4.4.0-43-generic Operating System: Ubuntu 16.04.1 LTS OSType: linux Architecture: x86_64 CPUs: 2 Total Memory: 4 GiB Name: docker ID: FOAC:LFCO:6B2U:HWVU:NGEC:GZAS:ZKCI:EBIU:JDBP:EGB4:2NMN:4KXI Docker Root Dir: /var/lib/docker Debug Mode (client): false Debug Mode (server): false Registry: https://index.docker.io/v1/ WARNING: No swap limit support WARNING: bridge-nf-call-iptables is disabled WARNING: bridge-nf-call-ip6tables is disabled Insecure Registries: 127.0.0.0/8 root@docker:~# docker --version Docker version 1.12.1, build 23cf638 root@docker:~# mount | grep btrfs /dev/md2 on / type btrfs (rw,relatime,space_cache,user_subvol_rm_allowed,subvolid=49300,subvol=/var/lib/lxd/containers/docker/rootfs) /dev/md2 on /dev/lxd type btrfs (rw,relatime,space_cache,user_subvol_rm_allowed,subvolid=5,subvol=/var/lib/lxd/devlxd) /dev/md2 on /dev/.lxd-mounts type btrfs (rw,relatime,space_cache,user_subvol_rm_allowed,subvolid=5,subvol=/var/lib/lxd/shmounts/docker) /dev/md2 on /var/lib/docker/btrfs type btrfs (rw,relatime,space_cache,user_subvol_rm_allowed,subvolid=49300,subvol=/var/lib/lxd/containers/docker/rootfs/var/lib/docker/btrfs) And finally, the error: docker rm 681fbe3f6870 Error response from daemon: Driver btrfs failed to remove root filesystem 0c214cb543ccd067e5208c8d5374b8345ec534c54b488719f17adb5f6cd44821: Failed to rescan btrfs quota for &{}: operation not permitted -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574363 Title: can't delete docker containers in lxd: Driver btrfs failed to remove root filesystem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/docker.io/+bug/1574363/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs