[Gluster-users] Ownership changed to root

[Joe Topjian]

I figured out how to work around this but I'm not sure of the exact reason
why it happened.

The Gluster bricks I was using were LVM LV partitions that sat on top of a
software RAID1. I broke the software RAID and dedicated one hard drive to
LVM in order for OpenStack to use it for nova-volumes. I then used the
other drive strictly for the gluster brick.

This removed mdadm and LVM out of the equation and the problem went away. I
then tried with just LVM and still did not see this problem.

Unfortunately I don't have enough hardware at the moment to create another
RAID1 mirror, so I can't single that out. I will try when I get a chance --
unless anyone else knows if it would cause a problem? Or maybe it is the
mdamd+LVM combination?

Thanks,
Joe

On Fri, Aug 24, 2012 at 3:17 PM, Joe Topjian <joe at topjian.net> wrote:

> Hello,
>
> I'm seeing a weird issue with OpenStack and Gluster.
>
> I have /var/lib/nova/instances mounted as a glusterfs volume. The owner of
> /var/lib/nova/instances is nova:nova.
>
> When I launch a vm and watch it launching, I see the following:
>
> root at c01:/var/lib/nova/instances/instance-00000012# ls -l
> total 8
> -rw-rw---- 1 nova nova    0 Aug 24 14:22 console.log
> -rw-rw-r-- 1 nova nova 1459 Aug 24 14:22 libvirt.xml
>
> This is correct.
>
> Then it changes ownership to libvirt-qemu:
>
> root at c01:/var/lib/nova/instances/instance-00000012# ls -l
> total 22556
> -rw-rw---- 1 libvirt-qemu kvm         0 Aug 24 14:22 console.log
> -rw-r--r-- 1 libvirt-qemu kvm  27262976 Aug 24 14:22 disk
> -rw-rw-r-- 1 nova         nova     1459 Aug 24 14:22 libvirt.xm
>
> Again, this is correct.
>
> But then it changes to root:
>
> root at c01:/var/lib/nova/instances/instance-00000012# ls -l
> total 22556
> -rw-rw---- 1 root root        0 Aug 24 14:22 console.log
> -rw-r--r-- 1 root root 27262976 Aug 24 14:22 disk
> -rw-rw-r-- 1 nova nova     1459 Aug 24 14:22 libvirt.xml
>
> OpenStack then errors out due to not being able to correctly access the
> files.
>
> If I remove the /var/lib/nova/instances mount and just use the normal
> filesystem, the root ownership part does not happen.
>
> I have successfully had Gluster working with OpenStack in this way on a
> different installation, so I'm not sure why I'm seeing this issue now.
>
> Any ideas?
>
> Thanks,
> Joe
>
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