On 9/20/06, John Que <qwejohn@gmail.com> wrote:
Hello, I had tried to do some test with LVM on a loopback device follwing some tutorials on the web. I get errors. what I do is this: dd if=/dev/zero of=/work/tmp/disk-image count=10240 mke2fs /work/tmp/disk-image mount -o loop /work/tmp/disk-image /work/loop/ 78 14:23 pvcreate /dev/loop1 error: Failed to wipe new metadata area /dev/loop1: Format-specific setup of physical volume failed. Failed to setup physical volume "/dev/loop1" what did I do wrong ?
If you want to use LVM on a loopback device, you don't create a filesystem on it first. You need to do something like # Create new empty disk-image dd if=/dev/zero of=disk-image count=10240 # set up a loop-device for it losetup /dev/loop2 disk-image # initialize that loop-device for LVM pvcreate /dev/loop2 # Create a VG on it vgcreate Test /dev/loop2 Now you can create Logical Volumes on that VG, e.g.: # Create a logical volume lvcreate --size 4M --name MyLV Test # Create a filesystem on it mke2fs /dev/Test/MyLV # mount the filesystem mkdir MyLV mount /dev/Test/MyLV MyLV And if you want to remove everything... umount MyLV rmdir MyLV lvremove /dev/Test/MyLV vgremove Test losetup -d /dev/loop2 rm disk-image -- Markus Laire _______________________________________________ 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/
