Smartd messages in logs, filesystem changed to read-only mode and system hang

Solution Verified - Updated -

Issue

  • System suddenly hung.
  • Filesystem changed to read-only mode automatically.
  • Messages contains:
Apr 27 12:29:22 HOSTNAME smartd[3369]: Device: /dev/sda, 1 Currently unreadable (pending) sectors  
Apr 27 12:29:22 HOSTNAME smartd[3369]: Device: /dev/sda, 1 Offline uncorrectable sectors

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • ext3 filesystem on LVM logical volume

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