HP StorageWorks Fabric OS 5.2.x administrator guide (5697-0014, November 2009)

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Fabric OS 5.2.x administrator guide 395

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

tar –xf /tmp/jbod.tar

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

15. 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

16. If you are not using multipathing software, mount all devices again and restart I/O. For example:

mount /mnt/jbod

17. If you are using multipathing software, re-enable 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.

18. To remove the original (outdated) entry, the command rmsf (remove special file) will be needed.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

19. Validate that the entry has been removed by using the command ioscan –funC disk. In this

example, the NO_HW entry is no longer listed:

20.Repeat for all fabrics.

21. Issue the switchEnable command. Enable the core switches first, then the edges.

AIX procedure

This procedure is not intended to be comprehensive. It provides a starting point from which a SAN

administrator can develop a site-specific procedure for a device that binds automatically by PID, and

cannot be rebooted due to uptime requirements.

1. Backup all data. Verify backups.

2. If you are not using multipathing software, stop all I/O going to all volumes connected through the

switch or fabric to be updated.

3. If you are not using multipathing software, varyoff the volume groups. The command usage is

varyoffvg <volume_group_name>. For example:

varyoffvg datavg

# 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

het46 (HP-50001)> ioscan -funC disk