HP StorageWorks SAN Switch 2/32 Installation Manual page 84

Updating the Core Switch PID Format
3. If you are not using multi-pathing software, unmount the volumes from their
mount points using umount. The proper usage would be umount <mount point>.
For example:
umount /mnt/jbod
4. If you are using multi-pathing software, use that software to remove one fabric's
devices from its configuration.
5. Deactivate the appropriate volume groups using vgchange. The proper usage
would be vgchange –a n <path to volume group>. For example:
vgchange –a n /dev/jbod
6. Make a backup copy of the volume group directory using tar from within /dev. For
example:
tar –cf /tmp/jbod.tar jbod
7. Export the volume group using vgexport. The proper usage would be vgexport –m
<map file> <path to volume group>. For example:
vgexport –m /tmp/jbod_map /dev/jbod
8. Login into each switch in the fabric
9. Issue the command switchDisable.
10. Issue the command configure and change the Core Switch PID Format to 1.
11. Issue the command switchEnable. Enable the core switches first, then the
edge switches.
12. Once you have done this to all switches in the fabric and verified that it has
re-converged properly, issue the command cfgEnable [effective zone
configuration] on one of the switches in that fabric. For example:
cfgEnable my_zones
13. Clean the lvmtab file by using the command vgscan.
14. Change to /dev and untar the file that was tared in step 4. For example:
tar –xf /tmp/jbod.tar
15. Import the volume groups using vgimport. The proper usage would be vgimport
–m <map file> <path to volume group> <physical volume path>. For example:
vgimport –m /tmp/jbod_map /dev/jbod /dev/dsk/c64t8d0
/dev/dsk/c64t9d0
B–6 SAN switch 2/32 version 4.0.x installation guide