Knowledge Base/Engine Yard Early Access/Early Access

Use ext4 Linux File System on Engine Yard

Diana Lam
posted this on February 10, 2014, 3:17 PM

Updated: February 14th, 2014

This is Early Access documentation for the ext4 Linux File System feature.

The ext4 or fourth extended filesystem is a journaling file system for Linux, developed as the successor to ext3. Enabling the ext4 Linux File System Early Access feature provides you the option of having the /data and /db volumes formatted with ext4 instead of ext3.

Get started with ext4 Linux File System on Engine Yard

This document describes how to use the ext4 Linux File System feature on Engine Yard.

Get help or provide feedback

If you have any issues or questions about this Early Access feature, use the Early Access Feature Feedback forum.


Enable the ext4 Linux File System feature

You need to enable the Early Access feature before you can participate in the program.

To enable the ext4 Linux File System Early Access feature

  1. Log in to your Engine Yard account.

  2. On the dashboard, click Tools > Early Access on the toolbar.


  3. Next to the ext4 Linux File System feature, click Enable.

    The related functionality becomes available.

Configure ext4 Linux File System

When you create a new Engine Yard environment, simply select the "Format volumes using ext4 filesystem" checkbox to configure this feature.

Configure for an Existing Engine Yard Environment

Note: Existing environments cannot be upgraded from ext3 to ext4.

After enabling this Early Access feature, you can now format the /data and /db volumes with ext4. This process will delete everything on the existing ext3 volumes.

Important: Before you start this configuration process, backup your database or confirm that you have an acceptable database backup.

To configure ext4 Linux File System

  1. Stop your environment.
  2. Restart your environment with a new volume.

    Important: Do NOT restart from a snapshot.

  3. Dump and restore your database.

More information

This table provides other resources related to ext4 Linux File System.

For more information about...See...
The difference between ext3 and ext4   Linux File Systems: Ext2 vs Ext3 vs Ext4

If you have feedback or questions about this page, add a comment below. If you need help, submit a ticket with Engine Yard Support.