From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brad Campbell Subject: Re: Promise SATAII150 TX4: strange disk ordering Date: Wed, 31 Aug 2005 18:50:42 +0400 Message-ID: <4315C3C2.5010007@wasp.net.au> References: <4315BB6F.2050402@wasp.net.au> <17173.49068.154562.170503@Psilocybe.Update.UU.SE> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from wasp.net.au ([203.190.192.17]:33758 "EHLO wasp.net.au") by vger.kernel.org with ESMTP id S932495AbVHaOvE (ORCPT ); Wed, 31 Aug 2005 10:51:04 -0400 In-Reply-To: <17173.49068.154562.170503@Psilocybe.Update.UU.SE> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Thorild Selen Cc: linux-ide@vger.kernel.org Thorild Selen wrote: > Brad Campbell writes: > > In one machine, I'm using 15 disks on 4 SATA150TX4 cards with > > 2.6.11.7 and have been now for over 4 months.. it's working > > perfectly.. not so much as a glitch. > > Is this a single-processor system without hyperthreading or the like? > In that case, it could be that the problem only appears on SMP/HT > systems, which would be interesting to know. > > (I was hit by the bug on a single-processor Xeon system, but with HT > enabled. I never thought of testing if disabling HT would make the bug > disappear or not. And now that the system is up and running again, I > don't really have the possibility to experiment with it.) > > If you have partitions on different devices that you can spare and > feel a little risky, you can try running badblocks -w (WARNING: this > will destroy any data on the disk/partition!) on several disks > simultaneously. That appears to be the simplest way to quickly > reproduce the bug. These 15 drives are in a RAID-6 that gets thrashed from time to time quite hard.. so there is almost *always* simultaneous IO to them.. But it is certainly a UP machine (both of them are). This one has 15 drives RAID-6, the other has 10 drives RAID-5 and 3 drives RAID-5 (two on the Promise ctrlr and one on the on-board VIA) No free partitions to spare, sorry.. all md's are pretty full. However I did all sorts of badblocks/dd/bonnie runs when I was burning in the box and never had an issue at all. -- "Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so." -- Douglas Adams