Cluster node failed after becoming unresponsive during high IO load

Issue

Cluster noded failed after becoming unresponsive

Red Hat Enterprise Linux (RHEL) 6
Red Hat Enterprise Linux (RHEL) 7
Cluster software installed - one of:
- Red Hat Enterprise Linux High Availability Add-On
- Red Hat Enterprise Linux Resilient Storage Add-On
- Oracle RAC 11g, 12c
- Other clustering software
kernel version
- with pre retpoline spectre-meltdown fixes
  OR
- with retpoline spectre-meltdown fixes and
  with third party kernel modules which are not retpoline compiled
  or isufficient microcode version to support retpoline optimizations

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