Solaris Cluster IPMP Group Failure Impact when in.mpathd log "state transition from OK to DOWN"
Last updated on APRIL 18, 2018
Applies to:Solaris Cluster - Version 3.1 to 4.3 [Release 3.1 to 4.3]
Oracle Solaris on SPARC (32-bit)
Oracle Solaris on x86-64 (64-bit)
Oracle Solaris on SPARC (64-bit)
Short network pause causes IPMP group to fail which triggers resource group failover in Solaris Cluster.
IPMP failure can be observed in /var/adm/messages as follows:
Aug 22 12:59:22 sun2 in.mpathd: [ID 832587 daemon.error] Successfully failed over from NIC ce4 to NIC ce0
Aug 22 13:00:29 sun2 in.mpathd: [ID 168056 daemon.error] All Interfaces in group sun2-ipmp1 have failed
Aug 22 13:00:29 sun2 Cluster.PNM: [ID 890413 daemon.notice] sun2-ipmp1: state transition from OK to DOWN.
But then it came back 38 seconds later:
But at the same time the resource group failover already triggered:
(Notice that it happened 9 seconds before IPMP group came back OK)
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