From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751053AbVLGOBh (ORCPT ); Wed, 7 Dec 2005 09:01:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751071AbVLGOBh (ORCPT ); Wed, 7 Dec 2005 09:01:37 -0500 Received: from proxy.seznam.cz ([212.80.76.5]:49677 "EHLO proxy.seznam.cz") by vger.kernel.org with ESMTP id S1751053AbVLGOBg (ORCPT ); Wed, 7 Dec 2005 09:01:36 -0500 Message-ID: <4396EB32.4010800@feix.cz> Date: Wed, 07 Dec 2005 15:01:22 +0100 From: Michal Feix User-Agent: Mozilla Thunderbird 1.0.6 (X11/20050716) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Christoph Hellwig CC: linux-kernel@vger.kernel.org Subject: Re: [SCSI] SCSI block devices larger then 2TB References: <4396B795.1000108@feix.cz> <20051207123519.GA17414@infradead.org> In-Reply-To: <20051207123519.GA17414@infradead.org> Content-Type: text/plain; charset=ISO-8859-2; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>Greetings! >> >>Current aic79xxx driver doesn't see SCSI devices larger, then 2TB. It >>fails with READ CAPACITY(16) command. As far as I can understand, we >>already have LBD support in kernel for some time now. So it's only the >>drivers, that need to be fixed? LSI driver is the only one I found >>working with devices over 2TB; I couldn't test any other driver, as I >>don't have the hardware. Is it really so bad, that only LSI chipset and >>maybe few others are capable of seeng such devices? > > > I definitly works fine with Qlogic parallel scsi and fibrechannel and emulex > fibre channel controllers aswell as lsi/engenio megaraid controllers. > > It looks like aci79xx is just broken in that repsect. Unfortunately the > driver doesn't have a proper maintainer, we scsi developers put in fixes > and cleanups but we don't have the full documentation to fix such complicated > issue. If you have a support contract with Adaptec complain to them. As we do not have any special support contract with Adaptec, it's probably a dead end. I found some aic79xx driver on Adaptec website for 2.6 kernel. It detects full SCSI device capacity, but it hangs ocassionaly when that drive is beeing accessed, so it's unusable for every day use. Anyway, thanks for the info. And to everyone else, beware of Adaptec SCSI host adapters when using large SCSI arrays... :(