mlm.arr events

12/07/2023 Contributors

mlm.arr.affinity.not.queued

Severity: NOTICE
Description: This message occurs when the current processing of an error event prevents the Asymmetric Logical Unit Access (ALUA) handler from queuing an affinity switch event.
Corrective Action: (None).
Syslog Message: Affinity event %s not queued for LUN %s.
Parameters: event (STRING): Affinity event for asymmetric array.
serialno (STRING): Serial number of the array LUN.

Severity: ERROR
Description: This message occurs when the Asymmetric Logical Unit Access (ALUA) handler encounters too many affinity errors, which might lead to reduced I/O throughput.
Corrective Action: Evaluate the back-end array connectivity for optimal LUN balance across array controllers. Also check for failures reported by the back-end array with regards to ALUA target port group settings. Verify that FlexArray connectivity is done as per best-practice guide.
Syslog Message: Failing cmd %s for LUN %s due to too many affinity errors.
Parameters: cdb (STRING): String containing the opcode byte of the command descriptor block (CDB) that was sent to the device.
serialno (STRING): Serial number of the array LUN.