linux-kernel - Re: ZFS with Linux: An Open Plea

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Date:	Mon, 16 Apr 2007 13:00:35 +1000
From:	David Chinner <dgc@....com>
To:	Krzysztof Halasa <khc@...waw.pl>
Cc:	Neil Brown <neilb@...e.de>,
	"David R. Litwin" <presently42@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: ZFS with Linux: An Open Plea

On Sat, Apr 14, 2007 at 08:56:40PM +0200, Krzysztof Halasa wrote:
> Neil Brown <neilb@...e.de> writes:
> 
> > What, specifically, is there in ZFS that you want to use in Linux?
> > There is lots of interesting stuff in there, but which bit has caught
> > your attention?  It is possible that that functionality can be
> > incorporated into Linux without trying to clone or copy ZFS.
> 
> Filesystem block hashes (checksums) and in-fs redundancy (using the
> hashes to determine which copy of data is correct in case of
> corruption). It would mean multi-device filesystem.

Yup - multidevice support in XFS is something I'm working on
at the moment. There's many nice features that multi-device
filesystems can take advantage of (different geomteries,
multiple journals, internal RAID, redundancy, partially
online/offline filesystems, partial filesystem repair, etc).

Cheers,

Dave.
-- 
Dave Chinner
Principal Engineer
SGI Australian Software Group
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