[Lxc-users] lxc.mount.entry denied mount permission for -t ext4?

[Trent W. Buck]

twb at cybersource.com.au (Trent W. Buck)
writes:

> Serge Hallyn <serge.hallyn at canonical.com>
> writes:
>
>> You have:
>>
>> lxc.cgroup.devices.allow = c 1:3 rwm
>> lxc.cgroup.devices.allow = c 1:5 rwm
>> lxc.cgroup.devices.allow = c 1:8 rwm
>> lxc.cgroup.devices.allow = c 1:9 rwm
>> lxc.cgroup.devices.allow = c 4:* rwm
>> lxc.cgroup.devices.allow = c 5:0 rwm
>> lxc.cgroup.devices.allow = c 5:1 rwm
>> lxc.cgroup.devices.allow = c 5:2 rwm
>> lxc.cgroup.devices.allow = c 136:* rwm
>> lxc.cgroup.devices.allow = c 254:0 rm
>>
>> is your /dev/omega/squid device perhaps a blacklisted device?
>
> Hmm, I thought lxc.cgroup.devices applied AFTER lxc.mount.entry.
>
> I'll investigate -- if that the issue, I'll just have to stick to bind
> mounts and mount everything in the host OS in advance, because I know of
> no way to guarantee static major:minor allocation of stuff like hard
> disks and LVM LVs.

PS: you were right, if I add "lxc.cgroup.devices.allow = b 251:12 rwm",
the container starts up just fine, where

root at omega:~# ls -lids /dev/mapper/omega-squid
4006939 0 brw-rw---- 1 root disk 251, 12 2010-12-15 19:58 /dev/mapper/omega-squid