Cisco Bug: CSCvu16159 - 'zone' service crash when end devices send large number of ELS frames during zone commit
May 08, 2020
- Cisco MDS 9000 Series Multilayer Switches
Known Affected Releases
Symptom: The 'zone' service crashes due to signal 6 during a zone 'commit' operation. The crash may be preceeded by a kernel log about internal MTS messages being dropped. The following syslogs may be seen: <pre> %KERN-1-SYSTEM_MSG: [22402371.899965] mts_timer ALL_DROP timeout(180 sec) msg_id(1986033725) opc(1236) node(0x601):sap(18) - kernel %SYSMGR-2-SERVICE_CRASHED: Service "zone" (PID 5459) hasn't caught signal 6 (core will be saved). </pre> Conditions: This issue applies to all MDS platforms. It is more likely to occur when a lot of end devices change status during a commit and the commit takes several minutes. An example of this is when changing the zone default policy and there are a lot of unzoned devices in the default zone.
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Bug Details Include
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