It appears from the error message that the MDS thinks that a SAN-OS upgrade is in process for the SNMP deamon. SNMP is the protocol that Device Manager uses to send configuration commands to the MDS.
You might want to issue this command from the 9513 command line to check on the status. show install all status
As a work-around you might try to configure the VSAN via the 9513 command line, but I believe that if the SNMP deamon is hung up you will have additional problems down the road with other configuration issues from FM or DM.
You may want to open a case with Cisco TAC or your MDS service provider to get to the root cause.
The next step, if you wish to reach root cause, would be to open a Service Request with Cisco TAC or your MDS service provider and work with them to collect the requested output. You may want to collect a 'show tech details' and submit it when opening the service request.
If you want to try a work around, you could try a 'system switchover' to move the 9513 to the supervisor that is currently the standby. This should be 100% non-disruptive. It will cause the currently active supervisor to reboot and come up in standby. The SNMP process might clear up as a result of moving from one supervisor to the other. The drawback is, if this works, we will have no data to identify root cause.
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