Technical data

Fabric OS Administrator’s Guide A-17
Publication Number: 53-0000518-09
Performing PID Format Changes
A
7. Export the volume group using vgexport. The proper usage would be
vgexport –m <mapfile> <path_to_volume_group>. For example:
vgexport –m /tmp/jbod_map /dev/jbod
8. Connect to each switch in the fabric
9. Issue the switchDisable command.
10. Issue the configure command and change the Core Switch PID Format to 1.
11. Issue the command cfgEnable [effective_zone_configuration]. For example:
cfgEnable my_zones
12. Issue the switchEnable command. Enable the core switches first, then the edges.
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 <mapfile> <path_to_volume_group> <physical_volume_path>. For example:
vgimport –m /tmp/jbod_map /dev/jbod /dev/dsk/c64t8d0 /dev/dsk/c64t9d0
16. Activate the volume groups using vgchange. The proper usage would be vgchange –a y
<path_to_volume_group>. For example:
vgexport –a y /dev/jbod
17. If you are not using multipathing software, mount all devices again and restart I/O. For example:
mount /mnt/jbod
18. If you are using multipathing software, reenable the affected path. The preceding steps do not
“clean up” the results from ioscan. When viewing the output of ioscan, notice the that the original
entry is still there, but now has a status of NO_HW.
19. To remove the original (outdated) entry, the command rmsf (remove special file) will be needed.
The proper usage for this command would be rmsf –a –v <path_to_device>. For example:
rmsf –a –v /dev/dsk/c65t8d0
# ioscan -funC disk
Class I H/W Path Driver S/W State H/W Type Description
-------------------------------------------------------------------------------------
disk 0 0/0/1/1.2.0 adisk CLAIMED DEVICE SEAGATE ST39204LC
/dev/dsk/clt2d0 /dev/rdsk/c1t2d0
disk 1 0/0/2/1.2.0 adisk CLAIMED DEVICE HP DVD-ROM 304
/dev/dsk/c3t2d0 /dev/rdsk/c3t2d0
disk 319 0/4/0/0.1.2.255.14.8.0 adisk CLAIMED DEVICE SEAGATE ST336605FC
/dev/dsk/c64t8d0 /dev/rdsk/c64t8d0
disk 320 0/4/0/0.1.18.255.14.8.0 adisk NO_HW DEVICE SEAGATE ST336605FC
/dev/dsk/c65t8d0 /dev/rdsk/c65t8d0