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Failover Status Descriptions

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The following is a complete list of the failover statuses which may appear in the HASTAT HAFO Status Report:
  • Array Failure

  • Failover Failed

  • GOBack started

  • Not HAFO dev

  • Ready

  • Unknown failure

  • Unknown status

Each status is described in the sections below.

Array Failure


When this status is generated, the device adapter reported its failure via a SCSI message that was monitored and acted upon by HAFO. Failover occurred and data requests to the high availability array have been rerouted to the alternate data path. Normal system I/O activity continues.

Failover Failed


This status means a failure has occurred on the primary path. When failover was attempted, the alternate path was unavailable.

The alternate path has failed due to a data path fault or misconfiguration. Troubleshoot this instance by repairing the failure on the primary and alternate paths.

GOBack Started


This message appears only after the goback command has been executed. If goback is still running when a HAFO device status report is run (highly unlikely), this message will appear.

Run the HAFO device status report again. The "Goback started" message should be replaced by the actual status.

Not HAFO dev


This status message indicates that the ldev on the path is not a high availability array. High availability failover is available only with the XP256.

Ready


The Ready status shown for LDEV 102 in the sample report (above) indicates that I/O is being processed via the primary path. No failure or failover has occurred.

The Ready status is shown for all alternate paths in the sample report. This indicates that no change has occurred in the status of the alternate path since the doha command was last executed.

Unknown Failure


This state reflects the fact that the path not functioning due to a condition that could not be determined. Possible causes for this are:
  • The hose adapter is not responding

  • Cabling is broken or not carrying data

  • Array controller not responding

Unknown Status


The I/O subsystem has sent an unknown path status. Contact your HP Support representative to report the problem.




Failver Status Report


Chapter 6 Recovering From a Failover