If you like to move a disk to another physical location this will change the HW path and
therefore the device file. You need to update the LVM configuration to reflect these changes.
This is done by exporting the VG and then importing it using the new device files.
Here???s how to do that:
Note the HW paths and devicefiles of all disks in the affected VG:
# vgdisplay -v vg##
# ioscan -fnkCdisk
Remove the device files you won???t need anymore and shutdown the system:
# rmsf -H
# shutdown -h 0
Now carry out the hardware modifications and boot the system from the new HW path to
maintenance mode:
ISL> hpux ???lm
The new device files should be automatically created during bootup. If this is not the case you
can easily create them using insf(1M):
# insf -H -e
Now note the VG???s minor number and export it:
# ll /dev/*/group
# vgexport -v -m /tmp/vg##.map vg##
Import the VG again
# mkdir /dev/vg##
# mknod /dev/vg##/group c 64 0xXY0000
# vgimport -v -m /tmp/vg##.map vg## ...
NOTE: If you are dealing with a large amount of disks i recommend to use the ???-f outfile??? option with
vgexport/vgimport.
If this is the root VG you need to update the information contained in BDRA:
# lvlnboot -r /dev//lvol3
# lvlnboot -b /dev//lvol1
# lvlnboot -s /dev//lvol2
# lvlnboot -d /dev//lvol2
# lvlnboot ???v (to ckeck it)
Now activate the VG and check the results:
# vgchange -a y vg##
# vgdisplay -v vg##
Because it is not allowed to change from maintenance mode to a higher run level you need to
reboot:
# shutdown -r 0
HTH
Roland
Sometimes you lose and sometimes the others win
