Installation guide

59
Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.2(6)
OL-27554-01
Caveats
Symptom: In an SME or IOA deployment, if the number of H->T flows that are added exceeds 512,
then subsequent disruptive platform events can leave an FCR unable to process interprocess (MTS)
messages at a rate fast enough to support the scaled configuration. This situation can cause an
MTS-buffers full condition in the FCR, which can result in unpredictable behavior. Some of the
resulting errors may be unrecoverable, and may require a disruptive restart of the flows.
Workaround: Use CFS regions if a large number (greater than 512) of application flows need to be
configured. CFS regions segment the FCR peer topology into manageable proportions.
• CSCtr50223
Symptom: On the MDS 9513 switch, when an MSM-18/4 module boots up, it sends a request to the
supervisor module to mount the modflash on the MSM-18/4 module. If there is a timeout or error in
response, the following syslog message displays:
2011 Jul 14 01:18:13 sw-dc5-br2-12 %LC_MNT_MGR-SLOT3-2-LC_MNT_MGR_ERROR: SUP mount
failed. MTS receive timedout
2011 Jul 14 01:19:06 sw-dc5-br2-12 %PROC_MGR-SLOT3-2-ERR_MSG: ERROR: PID 1144
(lc_mnt_mgr) exited abnormally, exit status (0xa)
2011 Jul 14 01:19:06 sw-dc5-br2-12 %MODULE-2-MOD_MINORSWFAIL: Module 3 (serial:
JAE1141ZB43) reported a failure in service lc_mnt_mgr
This issue might be seen when the supervisor module is unusually busy and cannot process the
mount request from the MSM-18/4 module, or the actual mount command on the supervisor takes a
long time.
Workaround: Reload the MSM-18/4 module in the same slot/module where the modflash mount
failed. A request will be sent to the supervisor to mount the modflash.
• CSCtx41288
Symptom: The label for a smart card is not detected correctly.
Workaround: None.
• CSCty82821
Symptom: After creating an SME cluster, adding disks to a disk group, changing some disk states,
and starting master key rekey, the key creation date is invalid.
Workaround: None.
• CSCua61011
Symptom: After creating an SME cluster in advanced mode, adding 500 disks to the disk group,
exporting the keys, and importing the keys again, there is no scroll option in the import manage key
window.
Workaround: None.
• CSCub52623
Symptom: On a Cisco MDS 9000 switch with the MSM-18/4 module that is running FC Redirect,
host ports and destination ports become error-disabled after flapping. The logs show the following
errors:
switch(config-if)# sh int fc1/17 br
-------------------------------------------------------------------------------
Interface Vsan Admin Admin Status SFP Oper Oper Port
Mode Trunk Mode Speed Channel
Mode (Gbps)
-------------------------------------------------------------------------------
fc1/17 1 FL -- errDisabled swl -- --
switch(config-if)#