Troubleshooting

Troubleshooting & Diagnostics

Module Replacement Procedures

DF Disk Module Replacement/Recovery Procedure for Unattached Physical Volumes (HP 9000 Series 800 with Strict Mirroring)

Before you begin, review and ensure the requirements described in the “DF Disk Module Replacement Requirements” are met. Use this procedure if the volume group is not active or if the physical volume is unattached.

Step 1

a.Replace the disk module if you have not done so already.

b.Perform ioscan on the replaced disk module to ensure that it is accessible and to check that it is a proper replacement.

If you follow the example under “Example of a Disk Module Failure”, the host will display:

# ioscan /dev/dsk/c2t4d0

Step 2

Restore the LVM configuration/headers to the replaced disk from your backup of the LVM configuration:

# vgcfgrestore -n <volume group name> character device file

For example, the host will display:

# vgcfgrestore -n /dev/vg00 /dev/rdsk/c2t4d0

If the host fails during Step 2

If the host fails during this step, repeat this step to ensure all of the configuration data is written to the new disk.

Step 3

Attach the new disk module to the active volume group with the vgchange command:

# vgchange -a y <volume group name>

For example, the host will display: # vgchange -a y /dev/vg00

Note for MC/ServiceGuard - If the disk array is used in an MC/ServiceGuard cluster volume group, the appropriate activation mode should be used. For example, vgchange –a e /dev/vgcluster

The appropriate activation mode can be determined by the value of the VG Status from the vgdisplay:

VG Status*

Command

Available

vgchange –a y

Availble, exclusive

vgchange –a e

Available, shared, server

Not sure what to do with SLVM

Available, shared, client

Not sure what to do with SLVM

*available may have a state specified after it (e.g. available/state)

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