fence_scsi_check.pl watchdog script does a soft reboot instead of hard and hangs during shutdown in a RHEL 6 or 7 Resilient Storage cluster with GFS2

Solution Unverified - Updated -

Issue

  • scsi fencing watchdog does not hard reset a node
  • The reboot that watchdog does is "soft" so things can hang during the shutdown
  • When a node is fenced by fence_scsi, it seems to get stuck on the way down and never reboots. There are hung task warnings on the console showing processes blocked waiting on GFS2.

Environment

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