From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keld =?iso-8859-1?Q?J=F8rn?= Simonsen Subject: suns raid-z / zfs Date: Sun, 17 Feb 2008 17:04:03 +0100 Message-ID: <20080217160403.GA15710@rap.rap.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Hi any opinions on suns zfs/raid-z? It seems like a good way to avoid the performance problems of raid-5 /raid-6 But does it stripe? One could think that rewriting stripes other places would damage the striping effects. Or is the performance only meant to be good for random read/write? Can the code be lifted to Linux? I understand that it is already in freebsd. Does Suns licence prevent this? And could something like this be built into existing file systems like ext3 and xfs? They could have a multipartition layer in their code, and then the heuristics to optimize block access could also apply to stripe access. best regards keld