RHEL cluster reports "qdiskd on node 1 reports hung read()" when a node's I/O to the quorum device is stalled

Solution Unverified - Updated -

Issue

  • Why do some cluster nodes report the following in their logs?
qdiskd[29885]: qdiskd on node 1 reports hung read()
  • What behavior is expected from the cluster when a node's I/O to the quorum device is stalled?
  • Is there a way to avoid a node being evicted from the cluster while a multipath path failover occurs?

Environment

  • Red Hat Enterprise Linux (RHEL) 5 or 6 with the High Availability Add On
  • Cluster configured to use a quorum device (<quorumd> in /etc/cluster/cluster.conf)

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