System hang in xfs_iunpin_wait due to symbdsnap module

Solution Unverified - Updated -

Issue

  • System hangs due to blocked tasks with the following warnings:

    INFO: task systemd:1 blocked for more than 120 seconds.
    INFO: task kswapd0:45 blocked for more than 120 seconds.
    INFO: task xfsaild/sda3:2853 blocked for more than 120 seconds.
    INFO: task pmx-dq-entries:7216 blocked for more than 120 seconds.
    INFO: task postgres:9567 blocked for more than 120 seconds.
    INFO: task kworker/u8:0:28682 blocked for more than 120 seconds.
    

Environment

  • Red Hat Enterprise Linux 7.6
  • Veritas 3rd party driver symbdsnap

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