I agree with Stephen. Option #1 is the way to go.
On all of the KVM nodes I've personally built, I use a hardware RAID controller and let it manage the array. You could use software RAID on the host OS, but there are advantages of using hardware RAID (background array initialization, battery backed).
Keep the RAID management at the hardware _or_ host OS (software raid) level and it will simplify administration.
---~~.~~--- Mike // SilverTip257 //
On Fri, Aug 10, 2012 at 11:00 AM, Stephen Harris lists@spuddy.org wrote:
On Fri, Aug 10, 2012 at 10:39:18AM -0400, Kanwar Ranbir Sandhu wrote:
- Let the KVM host manage the drives (i.e. RAID with LVM on top) and just
assign the single volume to OMV. OMV will see it as one HD. 2. Assign the individual drives to the OMV KVM, and let OMV manage the RAID creation, management, etc.
I recommend option 1 simply because of recovery methodology. If you lose a disk and replace it, if the host controls the RAID then you have one point of repair and the VMs don't even notice. If, however, each VM does RAID itself then _each_ VM will need to perform disk replace and rebuild, which is a lot of admin overhead. Also that could cause a lot of disk contention and slow down the rebuild.
Today you only have one VM. Tomorrow? :-)
--
rgds Stephen _______________________________________________ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt