Re: [Dazuko-devel] nullfs 0.0.1 posted

[Frantisek Hrbata]

On Wed, 23 Apr 2008 21:42:44 +0200
John Ogness <address@hidden> wrote:

> Hi,
> 
> I have posted version 0.0.1 of nullfs. This is a pass-through
> stackable filesystem. It's only purpose is to test that the stackable
> filesystem code is correctly implemented.
> 
> It is hoped that nullfs will eventually become the official testing
> ground for stackable filesystems and may provide a template/example
> for those interested in developing their own stackable filesystems on
> Linux.
> 
> Eventually DazukoFS will be based on nullfs (instead of the FiST
> project). In my opinion this first version of nullfs is already more
> stable than the latest FiST release.
> 
> If you are interested in helping bring DazukoFS to a stable release,
> you can help a lot by testing nullfs. I plan to soon post a new
> experimental pre-release of Dazuko 3.0, this time based on nullfs
> instead of FiST. Improvements in nullfs will directly help to improve
> Dazuko 3.0.
> 
> The only missing feature of nullfs is write-support for memory mapped
> files. Once I get that implemented, I will be posting nullfs to the
> Linux kernel mailing list to see if we can get it mainline. This would
> be an important first step towards moving Dazuko into the mainline
> kernel.

I peeked to the nullfs code and I think you will also need to allow stacking
for the d_compare operation. At least isofs and vfat is using it.

Good luck with the nullfs. It looks good.

> Be sure to read the README included in the nullfs distribution. nullfs
> will work as a kernel module and without any kernel patches. Linux
> 2.6.21 or higher is required.
> 
> John Ogness
> 
> -- 
> Dazuko Maintainer

-- 
Regards,

Frantisek Hrbata