On 07/16/2013 01:29 PM, Guan Qiang wrote:
δΊ 2013/7/15 17:32, Gao feng ει:
On 07/15/2013 05:18 PM, hzguanqiang wrote:
Hi, Gao Feng
I've tried what you said, but still exists the problem:
ubuntu@lxc:~$ vir attach-disk instance-0000002c /dev/dm-0 sdb error: Failed to attach disk error: Unable to create device /proc/10366/root/dev/sdb: Permission denied
I think finding what it means by saying 'Unable to create device /proc/10366/root/dev/sdb: Permission denied' is the key. But anyway, thanks for your help!
Do you have <idmap> configured for your lxc domain? I just posted a patchset to fix the problem that failed to create device when user namespace enabled.
BTW, does it work well if you directly write the configuration to the xml of lxc domain?
Thanks Hi, Gao feng,
I tried to write the configuration in the xml as you said, and it works.
And I didn't set <idmap> configure for my lxc domain. The xml content of my lxc domain is just as following:
...
I still don't understand why I can't hotplug attach disk device for the lxc domain. Expect more detailed answer, Thanks!
it's because apparmor deny libvirt to create device node under directory /proc/10366/root/dev/. I don't know if this will help you, you can have a try. change the apparmor profile of libvirtd. check the /etc/apparmor.d/usr.sbin.libvirtd, and add /proc/ rw. Thanks!