Kernel panic - not syncing: Hard LOCKUP during loss of an FC path

Solution Verified - Updated -

Issue

  • Rebooting a SAN switch inside 1 Fabric, the other Fabric was left untouched. The SAN switch is not directly connected to the Server. The server was hanging and dumping the kernel.

Environment

  • Red Hat Enterprise Linux 6.8
  • Serial console
  • 200 FC LUNs using two paths each

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