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Linux tune2fs Guide

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Mattscreative edited this page Dec 5, 2025 · 2 revisions

Linux tune2fs Guide

Complete beginner-friendly guide to tune2fs on Linux, covering Arch Linux, CachyOS, and other distributions including ext filesystem tuning, filesystem parameters, and ext filesystem management.

Table of Contents

  1. Understanding tune2fs
  2. tune2fs Basics
  3. Filesystem Parameters
  4. Label and UUID
  5. Troubleshooting

Understanding tune2fs

What is tune2fs?

tune2fs adjusts ext filesystem parameters.

Uses:

  • Tune filesystem: Adjust filesystem settings
  • Set label: Set filesystem label
  • Mount options: Set default mount options
  • Filesystem management: Manage ext filesystems

Note: Only works with ext2, ext3, ext4 filesystems.

tune2fs Basics

View Information

Show info:

# Show filesystem information
sudo tune2fs -l /dev/sda1

# -l = list (shows information)

Set Label

Filesystem label:

# Set label
sudo tune2fs -L "MyLabel" /dev/sda1

# -L = label (sets filesystem label)

Filesystem Parameters

Mount Count

Max mount count:

# Set max mount count
sudo tune2fs -c 30 /dev/sda1

# -c = count (checks every 30 mounts)

Check Interval

Time interval:

# Set check interval
sudo tune2fs -i 2w /dev/sda1

# -i = interval (checks every 2 weeks)

Label and UUID

Change UUID

Generate new UUID:

# Generate new UUID
sudo tune2fs -U random /dev/sda1

# -U = UUID (random = new UUID)

View UUID

Show UUID:

# Show UUID
sudo tune2fs -l /dev/sda1 | grep UUID

# Shows filesystem UUID

Troubleshooting

Unmount First

Unmount device:

# Unmount before tuning
sudo umount /dev/sda1

# Then tune
sudo tune2fs -L "NewLabel" /dev/sda1

Summary

This guide covered tune2fs usage, ext filesystem tuning, and filesystem management for Arch Linux, CachyOS, and other distributions.

Next Steps

This guide covers Arch Linux, CachyOS, and other Linux distributions. For distribution-specific details, refer to your distribution's documentation.

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