On 02/08/2011 02:06 PM, Tapas Mishra wrote:

I want to know what is the difference between the output blkid command shows and the uuid which is set by virt-manager while creating a guest. Suppose in case of a re installation sort of situation I want to do a fresh install and restore things from a backup then where does this UUID thing comes into picture and what is its role with respect to Virtual Machines.

AFAIU it's just a unique identifier for use with libvirt, though nowadays it might be passed down to the guest for other purposes. cc-ing libvirt-list - Cole