Re: ext3 vs ext4

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Author: Joe Fleming
Date:  
To: Main PLUG discussion list
Subject: Re: ext3 vs ext4







From what I've read, even though ext4 has been added
to the Linux kernel, it's still in kind of in beta. It's stable enough
to use, but probably not ready for the server farms just yet. I've also
read that you can move from ext3 to ext4 without losing any data, but I
don't know about the "lost features" you suffer from doing so.

If it's just a machine you run and your data on it isn't super
important, I'd say give it a spin. If it's a machine and data you find
extremely valuable, I'd look up how to set up an ext3 drive in order to
best prepare yourself for an upgrade down the road. For instance, I
read that a ext4 requires an inode size of 256 (should be the default
in 2.6.10+ kernels), so setting your ext3 partition up with that
parameter (and I'm sure others as well) may make it easy to migrate in
the future (though the conversion is supposed to take care of this for
you).

-Joe

bmike1 wrote:


which still leaves the question.... is it worth the trouble? what are
"extends" that would make it worth it? why does it make it worth it?
what are some other features and why do they make it worth it? after a
fews discussions someone can write a review and submit it to 'linux
journal' or something like that. I'll do it if no one volunteers!

On Thu, Feb 5, 2009 at 8:28 PM, Francis Earl <>
wrote:

On Thursday 05 February 2009 5:04:51 Jon M. Hanson wrote:
> I don't think you have to wipe your hard drive to go from ext3 to
> ext4. I think there us an in-place conversion method.


While this is technically true, you actually miss out on some features
- for
instance extends - when you don't format as EXT4.

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