Unable to mount ext4 filesystem error mount: unknown filesystem type 'ext4'

Solution Verified - Updated -

Issue

  • Getting error while mounting ext4 filesystem:
# mount -a
mount: /opt/test1: unknown filesystem type 'ext4'.
mount: /tmpdump: unknown filesystem type 'ext4'.
mount: /opt/test2: unknown filesystem type 'ext4'.
mount: /opt/test1: unknown filesystem type 'ext4'.
mount: /opt/test1: unknown filesystem type 'ext4'.
mount: /dev/test: unknown filesystem type 'ext4'.

# modprobe ext4
modprobe: FATAL: Module ext4 not found in directory /lib/modules/4.18.0-425.19.2.el8_7.x86_64

Environment

  • Red Hat Enterprise Linux 8
  • ext4

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