From mboxrd@z Thu Jan 1 00:00:00 1970 From: Luca Berra Subject: Re: Combining OCFS2 with Linux software RAID-0? Date: Fri, 11 Dec 2009 08:15:26 +0100 Message-ID: <20091211071526.GA4062@maude.comedia.it> References: <23986fd90912091503r3c671448va4d8637edfab472b@mail.gmail.com> <20091210123703.71b47ce7@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Return-path: Content-Disposition: inline In-Reply-To: <20091210123703.71b47ce7@notabene.brown> Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Thu, Dec 10, 2009 at 12:37:03PM +1100, Neil Brown wrote: >On Wed, 9 Dec 2009 15:03:11 -0800 >> Has anybody tried something like this? Are there alternative RAID-0 >> solutions for Linux that would be expected to work? > >For RAID0 or LINEAR, this should work - give it a try. > _with_ a superblock? or without? what happens if one node modifies the superblock while the other is running. >It might work for RAID1 one day to, but is unlikely to ever work for >RAID5. With an external metadata handler i believe it would be possible to support up to raid1, maybe 10. While in similar setups, data protection should be handled by the storage system, raid 1 has its uses in a failover setup with two sites. I don't see a real use for raid5/6 in such scenarios. L. -- Luca Berra -- bluca@comedia.it Communication Media & Services S.r.l. /"\ \ / ASCII RIBBON CAMPAIGN X AGAINST HTML MAIL / \