Veritas Volume Manager 5.0 Migration Guide, HP-UX 11i v3, First Edition, May 2008

16 Converting LVM to VxVM
Converting unused LVM physical volumes to VxVM disks
Converting unused LVM physical volumes to VxVM
disks
LVM disks which are not part of any volume group, and contain no user data, are
simply cleaned up, so that there are no LVM disk headers. Then the disks are
given over to VxVM through the normal means of initializing disks.
Caution: Exercise caution while using this procedure to give disks over to VxVM.
You must be absolutely certain that the disks are not in use in any LVM
configuration. If there is any user data on these disks, it will be lost during
conversion.
Removing LVM disk information
To remove LVM disk information from the disks use the following command:
# pvremove disk_name
The pvremove command will not allow the removal of disk headers which
indicate a Volume Group membership for the disk. If the disk fails
pvremove for
this reason, you should first make certain that the group membership
information is stale. Do this by using
pvdisplay:
# pvdisplay disk_name
If pvdisplay finds no valid group information associated with the disk, you can
overwrite the LVM headers using
pvcreate:
# pvcreate disk_name
Caution: If disk_name is an alternate path to a disk that does not appear in the
lvmtab file for this system, or is a disk that is in use on another system, but not
imported onto this system, then do not
pvcreate -f the disk. Doing so will
destroy the LVM headers. You can use
pvcreate without the -f option safely, as
it will only succeed if the disk is not listed in the /etc/lvmtab file, and if the
LVM headers indicate that it is not a member of any volume group. (That is,
pvcreate has been run on the disk, but neither vgcreate nor vgextend have.)