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

Upgrading the MSA

NOTE: Before performing these migration steps, complete all prerequisites. (See Preparing for the

migration.)

Step Description Check

1 Notify all system units in the MSA SAN fabric that the MSA is going offline.

Back up all operating system and data volumes.

Verify successful backup of the operating system and data volumes.

Isolate the MSA from the network. Be sure to:

• Disable all applications (including daemons, cron jobs, and cluster services).

• Unmount the MSA volumes on all systems with access to the MSA.

For environments currently using Secure Path:

NOTE: Before proceeding, understand the following:

• HP Secure Path software can no longer be used to manage the MSA.

• QLogic HBA failover driver is the only recognized method for managing

redundancy on active/active MSA in Linux environments.

• This step runs a utility that prepares MSA LUNs currently managed by Secure Path

for the Qlogic failover driver. This utility enables a smooth transition of the MSA

from Secure Path and ensures that applications using the MSA do not require any

configuration changes.

• This utility creates the

/opt/hp/hp-devlabel directory and copies scripts

necessary for migrations. It also copies operating-system-specific binaries and

scripts to the

/usr/bin/hp and /sbin system directories.

• In addition to removing Secure Path and migrating the LUNs, this utility adds

persistency to the LUNs. This information is maintained in

/etc/sysconfig/hpdevlabel. HP recommends that you do not edit this file.

a. Log on to the Linux system as a super user (root).

b. Navigate to the temporary directory containing LMPutils.tar.gz.

(See Preparing for the migration.)

c. Enter the following commands to extract and install the hpdevlabel utility:

# tar -zxvf LMPutils.tar.gz

# cd ./LMPutils

# ./install.sh

d. Wait for the Linux Lun Migration and Lun Persistence installer menu to display.

e. At the menu prompt, enter: 1 Lun Migration with Lun persistency.

f. View the display for status and completion messages, and then proceed to the

step 6 in these instructions. The latest supported Qlogic failover driver is

installed and activated in later steps of these migration procedures.