APLawrence.com -  Resources for Unix and Linux Systems, Bloggers and the self-employed

Creating ext3 file systems

The ext3 filesystem is a journaled file system that is compatible with ext2 (an ext3 filesystem can be mounted as ext2 if necessary). It's faster and more reliable than ext2, and therefore has become popular (though so has Reiserfs).

This poster had difficulty creating an ext3 filesystem. Not so long ago, you'd do this by first making an ext2 filestem and then converting it with

tune2fs -j /dev/hdXX

A bit later, you could do that directly with:

mke2fs -j /dev/hdXX

(See https://www.redhat.com/archives/ext3-users/2001-January/msg00023.html)

and now you can use


I can't find a man page that says you can do "mkfs -t ext3 /dev/hdXX", but that does turn up in posts, so maybe it is in a newer version than I have.

However, this poster's problem wasn't really to do with ext3 at all; it was actually a problem with fdisk and the kernel.

If you modify or create a partition on a disk that has other mounted partitions, fdisk will tell you:

WARNING: Re-reading the partition table failed with error
16: Device or resource busy.
The kernel still uses the old table.
The new table will be used at the next reboot.
Syncing disks.

If you ignore that, or didn't see it, you are going to get errors when you try to create a filesystem on your new partition. That's what apparently happened here - the fix is simply to reboot. Note that this only applies if the disk being modified has mounted partitions: if you could unmount the other partitions or were using a disk without other partitions, you wouldn't need to reboot and could proceed directly to making your filesystems.

Referencing: http://groups.google.com/groups?selm=672ceaed.0406251701.757d68df%40posting.google.com

Got something to add? Send me email.

(OLDER)    <- More Stuff -> (NEWER)    (NEWEST)   

Printer Friendly Version

-> -> Creating ext3 file systems

Increase ad revenue 50-250% with Ezoic

More Articles by

Find me on Google+

© Tony Lawrence

Kerio Samepage

Have you tried Searching this site?

Unix/Linux/Mac OS X support by phone, email or on-site: Support Rates

This is a Unix/Linux resource website. It contains technical articles about Unix, Linux and general computing related subjects, opinion, news, help files, how-to's, tutorials and more.

Contact us

Linux source code is freely and easily available to all of us. Understanding it is much harder. (Tony Lawrence)

Technology is a word that describes something that doesn’t work yet. (Douglas Adams)

This post tagged: