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Am 21.07.2016 um 13:34 schrieb Andras Timar:
This is what we found out with Felix (ownCloud):

Symptom: collabora/code docker image does not work on Ubuntu 14.04
kit-00832-00 00:12:40.409709 [ loolkit ]
mknod(/opt/lool/child-roots/832//dev/random) failed. (errno: Operation
not permitted)

etc.

Reason: missing capabilities
# getcap /usr/bin/loolforkit

Failed to get capabilities of file `/usr/bin/loolforkit' (Operation not
supported)

Underlying reason:
Ubuntu 14 has missing kernel compile option CONFIG_AUFS_XATTR=y, which
is leading to setcap not working on docker's aufs storage.

I remember that bug, because CONFIG_AUFS_XATTR broke our aufs + NFS4 +
tmpfs setup, because tmpfs doesn't support XATTR, which broke our FAI
installations.

Upstream bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1557776

Call for action:
Either we find a solution without needing setcap, or Ubuntu 14 is not
supported ...

There are Ubuntu HWE stacks. Latest is Wily, which already has the aufs
xattr config enabled, but Xenial will be out in August. Xenial (AKA
16.04) will have have LTS support until 14.04 EOL (August 2019).

Regards,

HTH

Jan-Marek


Context


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