The Supported Methods to Test SEA Failover?

Technote (FAQ)


Question

What are the supported methods to test SEA failover?

Cause

The command that I entered does not seem to make the SEA failover to the other SEA.

Answer

Here are the supported methods to test or force SEA failover:

Manual Failover:

    On vio server:
      $ lsdev -type adapter
      or
      $ oem_setup_env
      # lsdev -Cc adapter |grep ent
- Note which ent is the SEA
# entstat -d entX ---> check for the status (PRIMARY, or BACKUP)

- Set ha_mode to standby on primary with chdev command:
# chdev -l entX -a ha_mode=standby
or
$ chdev -dev -attr ha_mode=standby
- Reset it back to auto and the SEA should fail back to the primary:
# chdev -l entX -a ha_mode=auto
or
$ chdev -dev -attr ha_mode=auto

Primary VIOS shutdown
- Reboot the VIOS on the primary for fail over to backup
adapter
- When the primary VIOS is up again, should fail back to the
primary adapter.

Primary VIOS error
- Deactivate primary VIOS from the HMC for fail over to
backup adapter
- Activate the primary VIOS for the fail back to the primary
again

Physical link failure
- unplug the link of the physical adapter on primary for fail
over to the backup adapter
- and replug of physical link of physical Ethernet adapter on
primary for the fail back to the primary

Reverse boot sequence
- Shut down both the VIO servers
- Reboot the VIOS with backup SEA and the adapter becomes
active
- Reboot the VIOS with primary SEA and fail back happens to
the primary SEA

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Document information


More support for:

Virtual I/O Server

Software version:

2.2.0, 2.2.0.10, 2.2.0.11, 2.2.0.12, 2.2.0.13, 2.2.1.0, 2.2.1.1, 2.2.1.3

Operating system(s):

AIX

Software edition:

Enterprise, Standard

Reference #:

T1011910

Modified date:

2011-11-04

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