CIFS mount hangs for 15 minutes after SMB Reconnect and Recover

Solution Verified - Updated -

Issue

  • CIFS mount hangs for 15 minutes after SMB Reconnect and Recover (called "Transparent Failover" but not full SMB3 Transparent Failover)
  • The Windows client does not even stop transferring a file when the file server cluster passes control between nodes. However, the Linux mount hangs for 15 minutes -- no ls, cd, cp, etc.
  • This happens every time the SMB Cluster node switches on the Windows 2012 file servers.

Environment

  • Red Hat Enterprise Linux 7.2 (client)
  • Microsoft Windows 2012 (server)
  • CIFS mount
  • SMB Reconnect and Recover feature from SMB Transparent Failover on servers

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