Sun Microsystems StorEdge 6900 Series - Manual (Page 99)

Chapter 7 Troubleshooting Virtualization Engine Devices 83
For Internal Use Only
▼ To Failback the Virtualization Engine
In the event of a Sun StorEdge T3+ array LUN failover, use the following procedure
to fail the LUN back to its original controller.
1. From the Storage Service Processor, type:
where:
The failback command will always be performed on the controller serial number,
regardless by which controller the LUN actually is currently owned (the Master or
Alt-Master). All VLUNS are affected by a failover and failback of the underlying
physical LUN.
The controller serial number is the system WWN for the Sun StorEdge T3+ array. In
the above example, the master Sun StorEdge T3+ array WWN is
50020F2300006DFA , and the number used in the failback command is
60020F2000006DFA .
2. The SLIC daemon must be running for the mpdrive failback command to
work. Ensure that the SLIC daemon is running by using the command found in
CODE EXAMPLE 7-3 .
If no SLIC processes are running, you can start them manually using the
SUNWsecfg scripts, which are located in the /opt/SUNWsecfg/bin/startslicd
-n v1 directory.
CODE EXAMPLE 7-3 slicd Output Example
# /opt/svengine/sduc/mpdrive failback -d v1 -j 60020F2000006DFA
-d Virtualization engine pair on which to run the command
-j Controller serial number, which corresponds to the Sun
StorEdge T3+ array WWN of the affected partner pair
# ps -ef | grep slic
root 6299 6295 0 Jan 04 ? 0:00 ./slicd
root 6296 6295 0 Jan 04 ? 0:02 ./slicd
root 6295 1 0 Jan 04 ? 0:01 ./slicd
root 6357 6295 0 Jan 04 ? 0:00 ./slicd
root 6362 6295 0 Jan 04 ? 0:03 ./slicd