[one-users] Do we need to mount /var/lib/one with ceph

Ruben S. Montero rsmontero at opennebula.org
Fri Nov 7 01:52:18 PST 2014

Hi Ndhuynh

Ceph storage in OpenNebula is handled as follows:

1.- Image Datastores, hold disk images repository as well as images for
running VMs in a Ceph volume
2.- System Datastore holds additional VM files, checkpoints, context disks
and the like.

If you need live-migration the easiest way is to have a shared filesystem
for the System Datastore. You don't need to export the whole /var/lib/one,
just the datastore directory, though.

If you do not need to live-migrate VMs you should be ok with a ssh based
system datastore....


On Wed Nov 05 2014 at 12:09:47 PM Huynh Dac Nguyen <ndhuynh at spsvietnam.vn>

>  Hi All,
>  I'm researching opennebula with ceph, i saw that most of guide focus on
> using ceph as datastore - block device, right?
>  Do we need to mount ceph to /var/lib/one as file system to prevent the
> opennebula frontend down expectedly?
>  My script is:
>  1) Make a ceph file system : one and mount to /var/lib/one in all
> opennebula node (front-end and node)
> 2) Create a ceph block device and add to opennebula as datastore
>  Is this a right way?
>  Regards,
> Ndhuynh
> ndhuynh at spsvietnam.vn
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