Convert Ext3 Filesystem to Ext4 in Ubuntu 9.04

Ext4 was released as a complete and stable file system in kernel 2.6.28 and is getting picked up quickly by many of the modern distros.  There are even cases where it has already replaced Ext3 as the default file system.  And before getting into it, I would always suggest that you backup your important data or have a backup plan in case something does go wrong.  If you are ready to take the plunge jump to the bottom for the instructions.  It is really simple, and worth it in my opinion for the performance gains.  However I would like to reiterate how important it is to backup your data.  This “can” be done on production systems without even having to reboot.  It’s better to be safe, than sorry.

• Gigantic File Sizes
• Backwards Compatibility
• Sub Directory Scalability
• Extents
• Multiblock Allocation
• Delayed Allocation
• Fast fsck
• Journal Checksum

Guides

• Creating a new Ext4 File System (add a new drive)
• Convert an existing Ext3 File System to Ext4 (convert)

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Tags: ext3 ext4 linux ntfs performance gains ubuntu