Dieter, Thanks very much, but the problem is I want be able to restore my LVM filesystems from a backup. This is why I came with the idea of booting the PC I want to restore from a USB stick. The idea is the stick has a copy of the backup client. The LVM filesystems are mounted under /restore and I restore all the data to /restore. How do I tell LVM the data has moved? I've experimented using this method but I noticed devmapper complains when I boot the PC from the newly restored data. Cheers Shaun -----Original Message----- From: linux-lvm-bounces@redhat.com [mailto:linux-lvm-bounces@redhat.com] On Behalf Of Dieter Stüken Sent: dinsdag 11 juli 2006 19:49 To: mingz@ele.uri.edu; LVM general discussion and development Subject: Re: Copying LVM from one system to another Ming Zhang wrote: > if HW is the same, why not use ghost or alike software to do a clone? Don't "clone" the LVM PVs if you ever want to connect both disks simultaneously. For normal partitions this is fine, as those are identified by the device name. So you can easily distinguish /dev/hda1 from /dev/hdc1. LVM however identifies the different VG/LV/PV by its content, regardless of where the disks are connected. If you connect your LVM disk to a different cable or controller, don't worry, it will be found automatically. If two disks, however, look exactly the same, LVM gets confused. Instead you should connect both disk: arrange booting from <newdisk>, lvm from <olddisk> should still work, even if connected differently. pvcreate <new disk> vgextend <new disk> pvmove <olddisk> vgreduce <olddisk> to migrate all LVM content to the new disk. Dieter. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ Op dit e-mailbericht is een disclaimer van toepassing, welke te vinden is op http://www.xb.nl/disclaimer.html _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
