Skip to main content

By clicking Submit, you agree to the developerWorks terms of use.

The first time you sign into developerWorks, a profile is created for you. Select information in your developerWorks profile is displayed to the public, but you may edit the information at any time. Your first name, last name (unless you choose to hide them), and display name will accompany the content that you post.

All information submitted is secure.

  • Close [x]

The first time you sign in to developerWorks, a profile is created for you, so you need to choose a display name. Your display name accompanies the content you post on developerworks.

Please choose a display name between 3-31 characters. Your display name must be unique in the developerWorks community and should not be your email address for privacy reasons.

By clicking Submit, you agree to the developerWorks terms of use.

All information submitted is secure.

  • Close [x]

Select a language:

  • Close [x]
  • Close [x]

JFS fundamentals

How to download, install, and use this advanced journalling filesystem

Daniel Robbins, Chief architect, Gentoo Linux, Microsoft
Daniel Robbins lives in Albuquerque, New Mexico. He was the founder and chief architect of the Gentoo Linux project. Daniel now works with Microsoft and describes his position as "helping Microsoft to understand Open Source and community-based projects."

Summary:  This tutorial shows you how to install and use JFS under Linux®.

Date:  02 Jan 2001
Level:  Intermediate
PDF:  A4 and Letter (27 KB | 7 pages)Get Adobe® Reader®

Activity:  8412 views
Comments:  

Using JFS

Creating a new partition

To use JFS, you'll need a spare partition. If there's unpartitioned space on your disk, you'll want to fire up fdisk or cfdisk and create a partition that will be used to hold a JFS filesystem. After creating a new partition, you may be told that you need to reboot. If you receive this message, it's important that you do so -- otherwise, the filesystem creation step will flake out.

Creating the filesystem

Once you have an empty partition available, you need to put a JFS filesystem on it. To do this, type the following:

# mkfs.jfs /dev/hdax

Replace hdax with the name of the blank partition. For my particular system, I typed "mkfs.jfs /dev/hda6".

Before mkfs.jfs creates the new JFS filesystem, it'll ask for confirmation. Make sure you typed in the correct partition name (!) and then hit Y.

mkfs.jfs development version: $Name: v0_0_17 $

Warning!  All data on device /dev/hda6 will be lost!

Continue? (Y/N) Y
   |

Format completed successfully.

1951866 kilobytes total disk space.

Back to top

Mounting JFS

After the filesystem has been created, it's time to mount it. After creating a new empty directory to serve as the mount point (such as "/mnt/jfs"), mount as follows:

# mount /dev/hdax /mnt/jfs -t jfs

Now you should be able to create, modify, and delete files on your new JFS filesystem mounted at /mnt/jfs. Enjoy!

4 of 6 | Previous | Next

Comments

Back to top

Close [x]

Help: Update or add to My dW interests

What's this?

This little timesaver lets you update your My developerWorks profile with just one click! The general subject of this content (AIX and UNIX, Information Management, Lotus, Rational, Tivoli, WebSphere, Java, Linux, Open source, SOA and Web services, Web development, or XML) will be added to the interests section of your profile, if it's not there already. You only need to be logged in to My developerWorks.

And what's the point of adding your interests to your profile? That's how you find other users with the same interests as yours, and see what they're reading and contributing to the community. Your interests also help us recommend relevant developerWorks content to you.

View your My developerWorks profile

Return from help

Close [x]

Help: Remove from My dW interests

What's this?

Removing this interest does not alter your profile, but rather removes this piece of content from a list of all content for which you've indicated interest. In a future enhancement to My developerWorks, you'll be able to see a record of that content.

View your My developerWorks profile

Return from help

static.content.url=http://www.ibm.com/developerworks/js/artrating/
SITE_ID=1
Zone=Linux, Open source
ArticleID=132895
TutorialTitle=JFS fundamentals
publish-date=01022001
author1-email=
author1-email-cc=

Table of contents

4 of 6 | Previous | Next

Local resources

Tags

Help
Use the search field to find all types of content in My developerWorks with that tag.

Use the slider bar to see more or fewer tags.

Popular tags shows the top tags for this particular content zone (for example, Java technology, Linux, WebSphere).

My tags shows your tags for this particular content zone (for example, Java technology, Linux, WebSphere).

Use the search field to find all types of content in My developerWorks with that tag. Popular tags shows the top tags for this particular content zone (for example, Java technology, Linux, WebSphere). My tags shows your tags for this particular content zone (for example, Java technology, Linux, WebSphere).

 

Dig deeper into Linux on developerWorks

Try IBM PureSystems. No charge.

IBM PureSystems on a kaleideoscope background

Experience today!

Get started with the cloud-based trial and pattern development kit.

Share this page:

  • Close [x]

Follow developerWorks:

  • Close [x]