Root Filesystem Went Read-only with Error "orphan inodes deleted"

(Doc ID 2333010.1)

Last updated on DECEMBER 12, 2017

Applies to:

Linux OS - Version Oracle Linux 6.5 and later
Linux x86-64

Symptoms

Server reports below EXT4 errors in the /var/log/messages :

Nov 9 11:12:17 server1 kernel: EXT4-fs (dm-2): orphan cleanup on readonly fs
Nov 9 11:12:17 server1 kernel: EXT4-fs (dm-2): 20 orphan inodes deleted
Nov 9 11:12:17 server1 kernel: EXT4-fs (dm-2): recovery complete
Nov 9 11:12:17 server1 kernel: EXT4-fs (dm-2): mounted filesystem with ordered data mode. Opts: (null)
Nov 9 11:16:08 server1 kernel: imklog 5.8.10, log source = /proc/kmsg started.

Cause

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