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OCI - Getting "EXT4-fs warning: mounting fs with errors, running e2fsck is recommended."

in Linux

APPLIES TO:

Oracle Cloud Infrastructure

Linux OS 

SYMPTOMS

While mounting the filesystem a warning message such as one of the following is triggered in the messages:

kernel: EXT3-fs warning: mounting fs with errors, running e2fsck is recommended

kernel: EXT4-fs (sdb1): warning: mounting fs with errors, running e2fsck is recommended

Cause

Filesystems can become corrupted for a variety of reasons, the most notable of which are:

**Connection failures during write operation

**Bad hardware (intermittent hardware failure)

**Faulty network connections

**Software/firmware bugs

**Incorrect file system resizes operations, such as logical volume resizing. 

Solution

The above error messages indicate the filesystem is not clean or damaged. First it is recommended to verify whether a good backup exists before attempting a repair.

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