Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com
Answertopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 

NOTE: CentOS Enterprise Linux is built from the Red Hat Enterprise Linux source code. Other than logo and name changes CentOS Enterprise Linux is compatible with the equivalent Red Hat version. This document applies equally to both Red Hat and CentOS Enterprise Linux.

6.4. Reverting to an ext2 File System

Because ext3 is relatively new, some disk utilities do not yet support it. For example, you may need to shrink a partition with resize2fs, which does not yet support ext3. In this situation, it may be necessary to temporarily revert a file system to ext2.

To revert a partition, you must first unmount the partition by logging in as root and typing,

umount /dev/mapper/VolGroup00-LogVol02

Next, change the file system type to ext2 by typing the following command as root:

/sbin/tune2fs -O ^has_journal /dev/mapper/VolGroup00-LogVol02

Check the partition for errors by typing the following command as root:

/sbin/e2fsck -y /dev/mapper/VolGroup00-LogVol02

Then mount the partition again as ext2 file system by typing:

mount -t ext2 /dev/mapper/VolGroup00-LogVol02 /mount/point

In the above command, replace /mount/point with the mount point of the partition.

Next, remove the .journal file at the root level of the partition by changing to the directory where it is mounted and typing:

rm -f .journal

You now have an ext2 partition.

If you want to permanently change the partition to ext2, remember to update the /etc/fstab file.

 
 
  Published under the terms of the GNU General Public License Design by Interspire