Open Stack

Hi,

 

Try to modify /etc/libvirt/qemu.conf

 

# The user ID for QEMU processes run by the system instance.

user = "root"

 

# The group ID for QEMU processes run by the system instance.

group = "root"

 

# Whether libvirt should dynamically change file ownership

# to match the configured user/group above. Defaults to 1.

# Set to 0 to disable file ownership changes.

dynamic_ownership = 0

 

that perhaps works.

 

Romi

 

发件人: openstack-bounces+romizhang1968=163.com at lists.launchpad.net
[mailto:openstack-bounces+romizhang1968=163.com at lists.launchpad.net] 代表
Leander Bessa Beernaert
发送时间: 2012年7月4日 星期三 23:49
收件人: Daniel P. Berrange
抄送: openstack at lists.launchpad.net
主题: Re: [Openstack] [OpenStack][Nova] Live Migration + NFSv4 - Permission
issues

 

Can't seem to get around it >.<. Below are the current permissions on the
folder in one of the compute nodes.

I've already tried chmod o+x /var/lib/nova/instances/ but nothing happend :/

 

gsd at cloud33:~$ ls -l /var/lib/nova/instances/
total 4
drwxrwxr-x 2 nova nova 4096 Jul  3 13:33 _base
gsd at cloud33:~$ ls -l /var/lib/nova/          
total 136
drwxr-xr-x 6 nova nova   4096 Jul  3 13:11 CA
drwxr-xr-x 2 nova nova   4096 Jun 25 20:11 buckets
drwxr-xr-x 2 nova nova   4096 Jun 25 20:11 images
drwxr-xr-x 3 nova nova   4096 Jul  4 15:45 instances
drwxr-xr-x 2 nova nova   4096 Jun 25 20:11 keys
drwxr-xr-x 2 nova nova   4096 Jun 25 20:11 networks
-rw------- 1 nova nova 104448 Jul  3 13:13 nova.sqlite
drwxr-xr-x 2 nova nova   4096 Jun 25 20:11 tmp

 

On Wed, Jul 4, 2012 at 4:35 PM, Daniel P. Berrange <berrange at redhat.com>
wrote:

On Wed, Jul 04, 2012 at 04:24:42PM +0100, Leander Bessa Beernaert wrote:
> Ok. so i have added the option you mentioned, restarted nfs and remounted
> on the compute nodes.
>
> Now i get this error: http://paste.openstack.org/show/19260/

  libvirtError: internal error Process exited while reading console log
output: chardev: opening backend "file" failed: Permission denied


This is an error from QEMU itself. So it shows libvirtd has successfully
done its part of the work. Unless you have changed your qemu.conf file,
then QEMU will normally run as the 'qemu:qemu' user/group pair. So you
should make sure that user account has r-x permission on the directory
where the images are stored. QEMU doesn't need write permission on
the directory - libvirtd makes sure the files themselves are writable

Regards,

Daniel
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