openstack team mailing list archive

[Diego Parrilla Santamaría <diego.parrilla.santamaria@xxxxxxxxx>]

We use nfs backed instances a lot, and this problem normally has to do with
wrong permission management in your filer and/or client.

Check if not only root can write on the nfs share (specially libvirt user).

Diego
-- 
Diego Parrilla
<http://www.stackops.com/>*CEO*
*www.stackops.com | * diego.parrilla@xxxxxxxxxxxx** | +34 649 94 43 29 |
skype:diegoparrilla*
* <http://www.stackops.com/>
**




On Tue, Apr 3, 2012 at 6:43 PM, Mandar Vaze / मंदार वझे <
mandarvaze@xxxxxxxxx> wrote:

> I saw an old question posted here :
> https://answers.launchpad.net/nova/+question/164689
>
> But I am not trying live migration.
>
> I have nfs mounted instances_path - so when I try to spawn an instance I
> run into the above errors. Especially following :
>
> File "/usr/lib/python2.7/dist-packages/libvirt.py", line 372, in
> createWithFlags
> 40842 2012-04-03 05:42:27 TRACE nova.rpc.amqp     if ret == -1: raise
> libvirtError ('virDomainCreateWithFlags() failed', dom=self)
> 40843 2012-04-03 05:42:27 TRACE nova.rpc.amqp libvirtError: internal error
> Process exited while reading console log output: chardev: opening
> backend "file" failed
>
> But as you can see below, several files are created in this folder, so I
> am not sure if mine if permissions issue (Else none of the files would
> get created) The problem is reported when libvirt tries to write to
> console.log (File itself is created with correct permissions - just that
> this is zero byte file)
>
> mandar@ubuntu-dev-mandar:/nfs_shared_instances_path/instance-00000005$ ll
> total 10944
> drwxrwxr-x 2 mandar libvirtd    4096 2012-04-03 05:42 ./
> drwxrwxrwx 4 root   root        4096 2012-04-03 05:42 ../
> -rw-rw---- 1 mandar libvirtd       0 2012-04-03 05:42 console.log
> -rw-r--r-- 1 mandar libvirtd 6291968 2012-04-03 05:42 disk
> -rw-rw-r-- 1 mandar libvirtd 4731440 2012-04-03 05:42 kernel
> -rw-rw-r-- 1 mandar libvirtd    1067 2012-04-03 05:42 libvirt.xml
> -rw-rw-r-- 1 mandar libvirtd 2254249 2012-04-03 05:42 ramdisk
>
> I'm suspecting :
> https://bugs.launchpad.net/ubuntu/maverick/+source/libvirt/+bug/632696
> But I the above doesn't show itself in non-NFS setup
>
> Please suggest !!!
>
> -Mandar
>
>
> _______________________________________________
> Mailing list: https://launchpad.net/~openstack
> Post to     : openstack@xxxxxxxxxxxxxxxxxxx
> Unsubscribe : https://launchpad.net/~openstack
> More help   : https://help.launchpad.net/ListHelp
>
>