Migration Guide Migration from Qlogic Failover/Emulex Multipulse to HP Device Mapper Multipath (AA-RWFCC-TE, March 2008)

4 Troubleshooting

This section describes troubleshooting p roblems that you m ight encounter during migrating process.

Problem: Failed to unmount the selected devices from the list displayed in step 1 or step 2 du ring the

execution of migration script

Possib le Cause: Mount point entries are in/etc/fstab ﬁle, but the mount points are not being mounted.

Devices are being used by some application

Solution:Ifyouareawarethedeviceisnotmountedandyouintendnottomigratethatdevice,continue

with the m igration process. Otherwise, exit from the migration process and mount the d evice and restart

the migration script.

#./migration.pl

Problem: Failed to deactivate the Volume group(s) or Failed to export the Volume group(s) from the list

displayedinstep3duringtheexecutionofmigrationscript.

Possible C ause : Volume groups are in deactivate state. Volume groups are already exported.

Solution: If you are aware the volume group(s) a re in deactivate state, and exported continue with the

migration process. Otherwise, exit from the migration process and activate the Volume groups with

following commands and restar t the migration script:

#vgimport <VolumeGroupName>

#vgchange –a y <VolumeGroupName>

Migration from Qlogic Failover/Emulex Multipulse to HP Device Mapper Multipath