Re: Ext4dev vs. Ext4

Slim Joe wrote:
Besides the name, what's the difference between ext4dev and ext4?

I'm curious because I'm planning to format a 1TB disk as ext4. It
appears that the e2fs tools already have support for ext4 (with and
without -"dev"). The problem is the latest Debian Linux image
(2.6.26.x) has support only for ext4dev.

So the only way I can use an ext4 filesystem right now is to format
the hard disk as ext4dev and mount it as ext4dev. Will a subsequent
kernel upgrade with support for plain ext4 allow me to mount the
ext4dev-formatted disk as ext4?

It's to my understanding that ext4 stable was released with Linux kernel
2.6.28. I think it was still in development in 2.6.26. I would suspect
that the ext4dev stuff is part of Linux kernels prior to 2.6.28.

http://kernelnewbies.org/Ext4

- Ken


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