[RHEL6] IO errors during shutdown and/or shutdown hangs when using LVM over multipath over iSCSI.

Solution Unverified - Updated -

Issue

  • System fails to shutdown when using LVM over multipath over iSCSI.
  • System shutdown hang in lvm2-monitor command, when using iSCSI.
  • I/O Error messages are output during a system shutdown when using multipath over iSCSI.
      end_request: I/O error, dev dm-0, sector 10485632
  end_request: I/O error, dev dm-0, sector 10485744
  end_request: I/O error, dev dm-0, sector 0
  end_request: I/O error, dev dm-0, sector 8
   :

Environment

  • Red Hat Enterprise Linux 6
    • lvm2-2.02.83-3.el6
    • device-mapper-multipath-0.4.9-41.el6
    • iscsi-initiator-utils-6.2.0.872-21.el6
  • Storage configuration      
    • LVM --> multipath --> iSCSI

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