IO commands are getting hung while performing heavy IO operations on HP P812 SAS controller

Solution Unverified - Updated -

Issue

  • IO commands are getting hung while performing heavy IO operations on HP P812 SAS controller. Following error messages are observed in /var/log/messages file when this issue occurs:

    cmaeventd[1220]: SAS PHY link is DOWN on the port 1E of Array Controller in slot 1
cmaeventd[1220]: Port:1E BoxIndex:-1 BoxOnPort:0 ExpanderNum:0 ExpanderPhy:25 AttachedDevIndex:0 InvalidDwordCount:0 RunningDispErrCount:0 SASAddress:0000000000000000 DeviceType:0 SubType:0 IOModuleNum:0 ConnectorType:0 ConnectorIndex:0 AttachedSASAddress:0000000000000000 AttachedDeviceType:0 AttachedSubType:0 AttachedBoxIndex:0 AttachedBoxOnPort:0 AttachedIOModuleNum:0 AttachedConnectorType:0 AttachedConnectorIndex:0 
cmaeventd[1220]: SAS PHY link is UP on the port 1E of Array Controller in slot 1
cmaeventd[1220]: Port:1E BoxIndex:-1 BoxOnPort:0 ExpanderNum:0 ExpanderPhy:25 AttachedDevIndex:0 InvalidDwordCount:0 RunningDispErrCount:0 SASAddress:0000000000000000 DeviceType:0 SubType:0 IOModuleNum:0 ConnectorType:0 ConnectorIndex:0 AttachedSASAddress:0000000000000000 AttachedDeviceType:0 AttachedSubType:0 AttachedBoxIndex:0 AttachedBoxOnPort:0 AttachedIOModuleNum:0 AttachedConnectorType:0 AttachedConnectorIndex:0

    and:

    LOG: POST Error: 1719 - A controller failure event occurred prior to this power-up

Environment

  • Red Hat Enterprise Linux 6.3
  • HP P812 SAS controller

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