HP:  Moving root volume group

Not sure why you'd want to do something like this - maybe you're trying to restore what some idiot did; however, the steps below will move the root volume group
 

1. Create a new root volume group
1. Initialize the disk to be used in the volume group so it can be booted
pvcreate -B /dev/rdsk/c0t0d0
2. Place the LIF information on the disk using the mkboot command.
mkboot /dev/rdsk/c0t0d0
3. Create the volume group
vgcreate vgroot /dev/dsk/c0t0d0
4. Create a logical volume that is suitable for use as the boot volume. This logical volume has to be the first in the volume group and should be a contiguous volume with bad block relocation turned off.
lvcreate -n stand -C y -r n -L 24 vgroot
5. Create a logical volume that is suitable for use as the root volume. This logical volume should be a contiguous volume with bad block relocation turned off
lvcreate -n root -C y -r n -L 64 vgroot
6. Create a logical volume that will be used as primary swap. This volume should be contiguous
lvcreate -n swap -C y -r n -L 64 vgroot
7. Create a logical volume that will be used as the dump volume. This volume should be contiguous
lvcreate -n dump -C y -r n -L 64 vgroot
8. Create a logical volume for /opt
lvcreate -n opt -L 250 vgroot
9. Create a logical volume for /usr
lvcreate -n usr -L 500 vgroot  # Choose an appropriate size for your system.
10. Create a logical volume for /var
lvcreate -n var -L 500 vgroot  # Choose an appropriate size for your system.
11. Update the autoboot information:
mkboot -a "hpux (0;)/stand/vmunix" /dev/rdsk/c0t0d0
 
2. Update the boot information:
1. Root information:    lvlnboot -r /dev/vgroot/root
2. Boot information:    lvlnboot -b /dev/vgroot/boot
3. Swap information:   lvlnboot -s /dev/vgroot/swap
4. Dump information:  lvlnboot -d /dev/vgroot/dump

3. Copy the data from the old logical volumes to the new ones.

for fs in root opt usr var
do
   mkdir /mnt/${fs}
   mount /dev/vgroot/${fs} /mnt/${fs}
done

# tar, cpio, cp -R, whatever suits your fancy to get the information over to the new logical volumes.  Don't forget the devices.
 

4. Update the primary boot path
1. Identify the hardware path for the disk used in the new root volume group
2. shutdown -r now
3. Interrupt the boot sequence and interact with the ISL
4. Via the resulting menu, update the primary boot path.
5. Allow the system to come up and troubleshoot as necessary

5. Remove, if appropriate, the lv boot information from the previous volume group:  lvrmboot -r /dev/vg00