Script to unmount, defrag and remount and ext4 filesystem

ext4-defrag.sh

#!/bin/bash

# Check if the user has provided a device argument
if [ -z "$1" ]; then
  echo "Usage: $0 <device>"
  exit 1
fi

DEVICE=$1

# Unmount the specified device
umount $DEVICE

# Perform fsck on the device with long arguments and enable verbose output, force check, repair mode, directory optimization, and inode count full map
fsck.ext4 \
  --verbose \
  --force \
  --repair \
  --directory-optimize \
  --inode-count-fullmap \
  -p $DEVICE

# Mount the device back after fsck
mount $DEVICE