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Article Number: 000052608

Connectrix B-Series: MAPS daemon terminates and causes CPs to go out of sync in Fabric OS 7.3.x code.

Summary: Maps daemon (MDD) terminates and causes the CPs to go out of synchronization.

Article Content

Symptoms

Environment:
EMC Hardware: Connectrix ED-DCX-B
EMC Hardware: Connectrix ED-DCX-4S
EMC Hardware: Connectrix ED-8510-4B
EMC Hardware: Connectrix ED-8510-8B
Software: Fabric OS 7.3.1
 
Issue:
1. HA out of sync message in the errdump occurring every minute: 
2017/02/17-07:49:24, [MAPS-1020], 32312, SLOT 6 | FID 128, WARNING, DCX, Switch wide status has changed from HEALTHY to MARGINAL..
2017/02/17-07:50:24, [MAPS-1020], 32313, SLOT 6 | FID 128, WARNING, DCX, Switch wide status has changed from MARGINAL to HEALTHY.
2017/02/17-07:51:24, [MAPS-1020], 32314, SLOT 6 | FID 128, WARNING, DCX, Switch wide status has changed from HEALTHY to MARGINAL.
2017/02/17-07:52:24, [MAPS-1020], 32315, SLOT 6 | FID 128, WARNING, DCX, Switch wide status has changed from MARGINAL to HEALTHY.

The Maps daemon (MDD) terminates after a period: 
[KSWD-1002], 51122/32327, SLOT 6 | FFDC | CHASSIS, WARNING, DCX, Detected termination of process mdd:2209., hasm_swd.c, line: 191, comp:insmod, ltime:
[FSSM-1003], 51123/32328, SLOT 7 | CHASSIS, WARNING, DCX, HA State out of sync., OID:0x003e0007, hasm_sgi.c, line: 2139, comp:hamd, ltime:
[RAS-5001], 51124/0, SLOT 6 | CHASSIS, INFO, DCX, Message KSWD-1002 caused FFDC event, ffdcd.c, line: 1030, comp:raslogd, ltime:
[RAS-1001], 51125/32329, SLOT 6 | CHASSIS, INFO, DCX, First failure data capture (FFDC) event occurred., ffdcd.c, line: 1031, comp:raslogd, ltime:
 
2. Another issue is that a Maps daemon (MDD) panics and restarts on active CP. As a result, director loses HA SYNC status.

Cause

MAPS daemon was terminated, due to a NULL pointer reference in the code. The MAPS daemon panicked and did not restart on the active CP, and as a result the director lost HA SYNC. This happens when standby CP is in and out of faulty state frequently, and HA cannot be recovered even after standby CP replacement.

Resolution

Resolution:
Upgrade to Fabric OS version 7.4.1e, 7.4.2, 8.0.2, or 8.1.0.
 
Workaround: 
For problem 2, schedule a maintenance window and reboot the active CP which is disruptive, since the CPs are not in sync.

Additional Information

Brocade DEFECT000618464

Article Properties

Affected Product

Connectrix

Product

Connectrix, Connectrix ED-DCX8510-4B, Connectrix ED-DCX8510-8B

Last Published Date

05 May 2022

Version

3

Article Type

Solution

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