Hi, Mark Thanks for comments.
How exactly are you seeing this collision? Are you trying to mount the two guest images in Dom0 or ... ? In that case, the VG names will collide too, not just the PV UUID.
Ahh, I might have made a mistake in the usage of "Collision". It means that a machine which has same Universally Unique IDentifier exits in the world.
So, I checked by the command, pvdispay/vgdisplay/lvdisplay, on both original guest and clone guest. Surely, when mount(kpartx) the images form Dom-0, the VG names is collide, which is for a user op. In case of cloning the original guest used LVM which is one disk wholly, Domain-0 automatically notices the cloning guest disk of header(LVM), which I think the problem. Thanks, Kazuki Mizushima
