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

[Daniel Lezcano]

On 12/16/2010 04:07 AM, Trent W. Buck wrote:
> 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.
>>      

Hmm, the lxc.cgroup is applied before the mount entry in the 0.7.2 
version but that was changed and is now applied after the mount entries 
in the 0.7.3 version.

>> 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
>