Re: Which features should I implement in my ext4 reader?

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Hello,

On Sun, Aug 18, 2013 at 08:04:20AM +0200, Felipe Monteiro de Carvalho wrote:
> On Sat, Aug 17, 2013 at 3:02 PM, Theodore Ts'o <tytso@xxxxxxx> wrote:
> > I think part of the problem (besids lots of people being busy and on
> > vacation) is it's not clear what your ext4 reader is going to be used
> > for.  As a result it's hard to give advice, not knowing what the
> > requirements are for said reader.
> 
> I think that I formulated my question incorrectly. I did not mean
> "please give me advice over my specific application" this time, but
> rather what I wanted was "please tell me a little about these various
> features and also tell me if they are finished or still work in
> progress, etc". Which is precisely what you answered already, so
> thanks a lot =)
> 
> > These features aren't quite fully supported yet.  The inline data
> > feature is probably closest to be being fully supported, when we
> > release an the next major version of e2fsprogs.
> 
> Just for completeness, which version number will that by?
> 
> So, I understand that currently mkfs.ext4 cannot generate ext4 file
> systems with this feature, correct?

You need to checkout to e2fsprogs/pu branch.  All patches for inline data
are on this branch.  BTW, the latest refinement of patches had been sent
to the mailing list [1].  It would be great if you could give it a try.

1. http://comments.gmane.org/gmane.comp.file-systems.ext4/39825

Regards,
                                                - Zheng

> 
> Is there any other way to generate a file system with this feature
> with a 3.8 kernel which will work?
> 
> Just wondering if I can already start work on this or if I need to wait.
> 
> thanks,
> -- 
> Felipe Monteiro de Carvalho
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