/dev/lxc permissions issue with updated 0.5.1+bzr563-0juju2~precise1

[Andreas Hasenack]

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On 10-08-2012 19:59, Serge E. Hallyn wrote:
> This looks similar to the cause of bug 
> (https://bugs.launchpad.net/ubuntu/+source/juju/+bug/930430) - lxc 
> (in this case lxc-start, in 930430 lxc-create) does an mkdir,
> passing in mode 0755, but the passed in mode is masked with a
> tightened umask set by juju (or perhaps by you?  you might type
> 'umask' in your shell to make sure).

My umask is fine:
$ umask
0002

The only thing that changed between those juju runs was the version of
juju itself:
0.5+bzr531-0ubuntu1.2: /dev/lxc is 0755 root:root
0.5.1+bzr563-0juju2~precise1: /dev/lxc is 0700 root:root

> Perhaps lxc should check its umask and spit out a warning...  I'd
> be open to that.  Usually you want to say let the caller decide
> these things, but in this case it always just breaks the guests.

That's open to discussion I guess, it depends if a 0700 /dev/lxc makes
sense or not, but at first I would like to understand what changed in
juju (presumably) that made this break all of a sudden.


- -- 
Andreas Hasenack
andreas at canonical.com

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