HP StorageWorks 2/32 - SAN Switch, Installation Manual, Page: 97 / 126

Updating the Core Switch PID Format
97 SAN Switch 2/32 Installation Guide
HP/UX Procedure for Updating the Core Switch PID Format
Use these procedures for updating the Core Switch PID format in an HP/UX
environment.
1. Back up all data. Verify backups.
2. If you are not using multi-pathing software, stop all I/O going to all volumes
connected through the switch/fabric to be updated.
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
.