[Bug 1574363] Re: can't delete docker containers in lxd: Driver btrfs failed to remove root filesystem

2016-10-15 Thread Henry Lawson 
I also observe sporadic errors with:

Error response from daemon: stat
/var/lib/docker/btrfs/subvolumes/a28d807f83e6131a6e43e062a73e7cbff496746e2dfceecc39a27483cabcd0d4:
no such file or directory

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Title:
  can't delete docker containers in lxd: Driver btrfs failed to remove
  root filesystem

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[Bug 1574363] Re: can't delete docker containers in lxd: Driver btrfs failed to remove root filesystem

2016-10-15 Thread Henry Lawson 
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

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Title:
  can't delete docker containers in lxd: Driver btrfs failed to remove
  root filesystem

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[Bug 1574363] Re: can't delete docker containers in lxd: Driver btrfs failed to remove root filesystem

2016-10-15 Thread Launchpad Bug Tracker 
Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: docker.io (Ubuntu)
   Status: New => Confirmed

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Title:
  can't delete docker containers in lxd: Driver btrfs failed to remove
  root filesystem

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[Bug 1574363] Re: can't delete docker containers in lxd: Driver btrfs failed to remove root filesystem

2016-04-25 Thread Yonsy 
http://serverfault.com/questions/615588/proper-way-of-handling-lxc-
containers-on-btrfs/676504#676504

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Title:
  can't delete docker containers in lxd: Driver btrfs failed to remove
  root filesystem

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[Bug 1574363] Re: can't delete docker containers in lxd: Driver btrfs failed to remove root filesystem

2016-04-24 Thread Reinhard Tartler 
Thank you for this clarification.

I'm not sure how to enable the aufs backend. Reading in the docker
documentation at
https://docs.docker.com/engine/userguide/storagedriver/selectadriver/, I
understand with lxc running on btrfs, there is no other option than
using the btrfs option.

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Title:
  can't delete docker containers in lxd: Driver btrfs failed to remove
  root filesystem

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[Bug 1574363] Re: can't delete docker containers in lxd: Driver btrfs failed to remove root filesystem

2016-04-24 Thread Stéphane Graber 
Docker is supposed to always be using aufs inside LXD containers, the
output above suggests it's not the case.

btrfs doesn't allow for unprivileged btrfs subvolume delete by default,
only subvolume creation (yes, that's a bit odd). So the failure you're
getting is absolutely normal except for the fact that I was told Docker
would always do aufs inside unprivileged LXD containers.

As a workaround to keep having docker do btrfs inside LXD, you may want
to change the host btrfs mountpoint to have user_subvol_rm_allowed as a
mount option, then restart the LXD container and it should be able to
both create and delete subvolumes.

Note that a bunch more btrfs functions will still fail in the container,
so it'll likely only make things slightly better for you.

** Package changed: lxd (Ubuntu) => docker.io (Ubuntu)

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Title:
  can't delete docker containers in lxd: Driver btrfs failed to remove
  root filesystem

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