From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tim Southerwood Subject: Re: 2.6.24-rc6 reproducible raid5 hang Date: Thu, 24 Jan 2008 20:30:47 +0000 Message-ID: <4798F577.20007@dionic.net> References: <4797430E.2020603@dionic.net> <18327.31959.286239.480961@fisica.ufpr.br> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <18327.31959.286239.480961@fisica.ufpr.br> Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Carlos Carvalho wrote: > Tim Southerwood (ts@dionic.net) wrote on 23 January 2008 13:37: > >Sorry if this breaks threaded mail readers, I only just subscribed to > >the list so don;t have the original post to reply to. > > > >I believe I'm having the same problem. > > > >Regarding XFS on a raid5 md array: > > > >Kernels 2.6.22-14 (Ubuntu Gutsy generic and server builds) *and* > >2.6.24-rc8 (pure build from virgin sources) compiled for amd64 arch. > > This has been corrected already, install Neil's patches. It worked for > several people under high stress, including us. > - > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html Hi I just coerced the patch into 2.6.23.14, reset /sys/block/md1/md/stripe_cache_size to default (256) and rebooted. I can confirm that after 2 hours of heavy bashing[1] the system has not hung. Looks good - many thanks. But I will run with a stripe_cache_size of 4096 in practise as it improves write speen on my configuration about 2.5 times. Cheers Tim [1] Rsync > 50GB to raid pluf xfs_fsr + dd 11GB of /dev/zero to same filesystem.