From mboxrd@z Thu Jan 1 00:00:00 1970 From: Uprooter Subject: Re: Fusion MPT Ultra320 disks detected as Ultra2 Date: Mon, 14 Dec 2009 21:58:59 +0200 Message-ID: <200912142158.59141.uprooter@gmail.com> References: <26761757.post@talk.nabble.com> <200912131258.27052.uprooter@gmail.com> <1260705043.2709.285.camel@mulgrave.site> Mime-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-bw0-f227.google.com ([209.85.218.227]:49222 "EHLO mail-bw0-f227.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758131AbZLNT6k (ORCPT ); Mon, 14 Dec 2009 14:58:40 -0500 Received: by bwz27 with SMTP id 27so2363022bwz.21 for ; Mon, 14 Dec 2009 11:58:36 -0800 (PST) In-Reply-To: <1260705043.2709.285.camel@mulgrave.site> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: James Bottomley Cc: linux-scsi@vger.kernel.org On Sunday 13 December 2009 13:50:42 James Bottomley wrote: > On Sun, 2009-12-13 at 12:58 +0200, Uprooter wrote: > > Hello James and thanks for trying to help. > > > > Unfortunately changing min_period didn't solve anything. > > # pwd > > /sys/class/spi_transport/target2:0:1 > > > > localhost target2:0:1 # echo 25 > min_period > > localhost target2:0:1 # echo 1 > revalidate > > I did it for both disks. > > #dmesg | tail -10 > > target2:0:0: Beginning Domain Validation > > target2:0:0: Domain Validation skipping write tests > > target2:0:0: Ending Domain Validation > > target2:0:0: Beginning Domain Validation > > target2:0:0: Domain Validation skipping write tests > > target2:0:0: Ending Domain Validation > > target2:0:1: Beginning Domain Validation > > target2:0:1: Domain Validation skipping write tests > > target2:0:1: Ending Domain Validation > > target2:0:1: Beginning Domain Validation > > target2:0:1: Domain Validation skipping write tests > > target2:0:1: Ending Domain Validation > > > > # cat min_period > > 25 > > # cat period > > 50 > > OK, so I'd suspect a cabling problem. 50ns is the minimum period for a > single ended bus. You have to move to LVD to get anything beyond. I'd > say something in your SCSI cable chain is keeping the bus SE. > > James > Well I opened the server. nothing much to play with everything is tied up and I don't think anything except maybe disks has been changed since this server was bought. Can It be related to disk jumper settings ? Anything else you can think of ?