CIFS VFS: cifs_mount failed w/return code = -112

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux (all versions)
  • CIFS

Issue

  • Unable to mount CIFS Share from Windows Server 2012 R2 Server
# mount -a
mount error(112): Host is down
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Resolution

  • If CIFS Server is not reachable, CIFS Server needs to be restarted.
  • If there is an anomaly with private end point on CIFS Server storage account, the private end point needs to be deleted then recreated.

Root Cause

  • CIFS Server is not reachable, or there is an anomaly with private end point on CIFS Server storage account.

Diagnostic Steps

  • Verify ifconfig on CIFS client to ensure the network is up.
  • Verify /etc/fstab for IP address of CIFS server, then check if the entry is in /etc/hosts file.
  • Verify /ect/resolv.conf entries are proper.
  • The errors below will be shown in /var/log/messages:
Mar  2 19:30:47 host kernel: CIFS VFS: cifs_mount failed w/return code = -112
Mar  2 19:30:47 host kernel: CIFS VFS: cifs_mount failed w/return code = -112
Mar  2 20:20:17 host kernel: CIFS VFS: cifs_mount failed w/return code = -112

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