HP StorageWorks MSA 2.8 SAN Switch User Manual

Page 156

Updating Switches to the Core PID Addressing

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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

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

For example:

vgexport –m /tmp/jbod_map /dev/jbod

8. Log 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:

cfgEnable [effective_zone_configuration]

For example:

cfgEnable my_zones

12. Clean the lvmtab file by using the command

vgscan

13. Change to /dev and untar the file that was tared in step 4. For example:

tar –xf /tmp/jbod.tar