active controllers in Linux environments (400681-002, October 2006)

Migrating to active/active controllers in Linux environments 9

Rescan all HBAs by entering the following command:

# hp_rescan -a

NOTE: If LUNs that were not visible in the cat /proc/scsi/scsi display

become visible after the hp_rescan -a, do the following:

a. Run the pbl utility to probe the LUNs by entering the following:

# cd /opt/hp/hp_fibreutils/pbl

# ./pbl_inst.sh -i

b. Restart the Linux host.

c. Repeat step 13 and step14.

Re-mount the MSA LUNs on the Linux server.

Repeat this migration procedure on each Linux server with access to the MSA.

Migration is complete.

Consider the following optional procedure:

By default, the firmware automatically distributes ownership of the LUNs between the

two MSA controllers. If desired, manually set the preferred path for a LUN (controller

ownership) as documented in the HP Array Configuration Utility user guide or the HP

StorageWorks Modular Smart Array 1000/1500cs Command Line User Interface user

guide, available on the MSA1000 website: http://www.hp.com/go/msa1000

and

the MSA1500 website: http://www.hp.com/go/msa1500cs

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