Table 28. Event descriptions and recommended actions (continued)
Number
Severity
Description/Recommended actions
■
Turn off the power for the controller enclosure, wait a few seconds, then turn it back
on.
■
Wait for the controller module to restart, then sign in again.
■
Check the status of the disk groups. If any of the disk groups have a status of
quarantined offline (QTOF), dequarantine those disk groups.
■
Reinsert the previously removed controller module. It should now restart successfully
486
Warning
A recovery process was initiated to prevent writing invalid data that may exist in the controller
that logged this event.
The controller that logged this event has detected (using information saved in the disk group
metadata) that it may contain outdated data that should not be written to the disk groups. The
controller will log this event, restart the partner controller, wait 10 seconds, then kill itself. The
partner controller will then unkill this controller and mirror the correct cache data to it. This
procedure will, in most cases, allow all data to be correctly written without any loss of data and
without writing any outdated data.
Recommended actions:
●
Wait at least 5 minutes for the automatic recovery process to complete. Then sign in and
confirm that both controller modules are operational. (You can determine if the controllers
are operational with the CLI
show redundancy-mode
command.) In most cases, the
system will come back up and no action is required.
●
If both controller modules do not become operational in 5 minutes, see the recommended
actions for event 485, which will be logged at approximately the same time.
487
Info.
Historical performance statistics were reset.
Recommended actions:
●
No action is required.
488
Info.
Creation of a volume group started.
Recommended actions:
●
No action is required.
489
Info.
Creation of a volume group completed.
Recommended actions:
●
No action is required.
490
Info.
Creation of a volume group failed.
Recommended actions:
●
No action is required.
491
Info.
Creation of a volume group started.
Recommended actions:
●
No action is required.
492
Info.
The volumes in a volume group were ungrouped.
Recommended actions:
●
No action is required.
493
Info.
A volume group was modified.
Recommended actions:
●
No action is required.
495
Warning
The algorithm for best-path routing selected the alternate path to the indicated disk because
the I/O error count on the primary path reached its threshold.
Events and event messages
109