Explanation
At least one MDisk on a controller is degraded
because the MDisk is not available through one or more nodes. The
MDisk is available through at least one node. Access to data might
be lost if another failure occurs.
In a correctly configured
system, each node accesses all of the MDisks on a controller through
all of the controller's ports.
This error is only logged once
per controller. There might be more than one MDisk on this controller
that has been configured incorrectly, but the error is only logged
for one MDisk.
To prevent this error from being logged because
of short-term fabric maintenance activities, this error condition
must have existed for one hour before the error is logged.
User Response
- Determine which MDisks are degraded. Look for MDisks with a path
count lower than the number of nodes. Do not use only the MDisk status,
since other errors can also cause degraded MDisks.
- Ensure that the controller is zoned correctly with all of the
nodes.
- Ensure that the logical unit is mapped to all of the nodes.
- Ensure that the logical unit is mapped to all of the nodes using
the same LUN.
- Run the console or CLI command to discover MDisks and ensure that
the command completes.
- Mark the error that you have just repaired as "fixed". When
you mark the error as "fixed", the controller's MDisk availability
is tested and the error will be logged again immediately if the error
persists for any MDisks. It is possible that the new error will report
a different MDisk.
- Go to repair verification MAP.
Possible Cause-FRUs or other:
Other:
- Fibre Channel network fabric fault
(50%)
- Enclosure/controller fault (50%)