From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: Drives not detected: sil3124 PMP to sil4726 5 drive enclosure Date: Thu, 22 May 2008 11:25:52 +0900 Message-ID: <4834D9B0.8030902@gmail.com> References: <48344E5D.1040301@utdallas.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from rv-out-0506.google.com ([209.85.198.231]:20983 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754852AbYEVCZ7 (ORCPT ); Wed, 21 May 2008 22:25:59 -0400 Received: by rv-out-0506.google.com with SMTP id l9so2982302rvb.1 for ; Wed, 21 May 2008 19:25:58 -0700 (PDT) In-Reply-To: <48344E5D.1040301@utdallas.edu> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Ryan Burchfield Cc: linux-ide@vger.kernel.org Ryan Burchfield wrote: > Hi all, > I have done a bit of digging in the archives and find lots of related > issues but no working solutions. I don't know if this should be > considered a bug or not so help is appreciated. > I have a sil3124 chipset PCI card flashed with base(non-RAID) BIOS. > Connected to this card I have a sil4726 chipset 5 drive enclosure with > up to date firmware. The enclosure has been configured using a Windows > machine with 2 750GB drives in RAID 1. So a host PC should see 1 logical > 750GB drive + configuration drive if my understanding is correct. I have > tried many of the latest kernels but the drives are not detected correctly. > > At the moment I have just tried the latest fixes at upstream-fixes @ > git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev.git > > Attached below is a dmesg log with the above specified kernel for the > following action. > 1) Boot computer > 2) Begin recording dmesg log > 3) Turn on sil4726 based drive enclosure > 4) Wait for dmesg activity to settle > 5) Stop logging > > At the end of the process I have no additional disks in /dev/sd*. > > Does anyone have any suggestions or any troubleshooting steps that I > should try? What can I do to provide more useful information? Ah... please don't use hardware RAID mode w/ 4726. Just use it as plain Port Multiplier. Its ATA device emulation is really bad and just can't work with a generic driver. We had to disable even the Config Disk recently to work around some detection issues. Thanks. -- tejun