From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roger Oberholtzer Subject: Re: libata question Date: Wed, 02 Aug 2006 09:05:01 +0200 Message-ID: <1154502301.5691.23.camel@acme> References: <1154445491.18593.111.camel@acme> <44CF7447.300@gmail.com> <1154457583.4665.5.camel@shark.pacific> <44CFA15C.8080109@gmail.com> <1154458981.4665.9.camel@shark.pacific> <44CFA618.2090204@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from [62.209.160.46] ([62.209.160.46]:50655 "EHLO stockholm.opq.se") by vger.kernel.org with ESMTP id S1751285AbWHBHFG (ORCPT ); Wed, 2 Aug 2006 03:05:06 -0400 In-Reply-To: <44CFA618.2090204@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: linux-ide@vger.kernel.org On Wed, 2006-08-02 at 04:06 +0900, Tejun Heo wrote:=20 > Roger Oberholtzer wrote: > > On Wed, 2006-08-02 at 03:45 +0900, Tejun Heo wrote: > >> Roger Oberholtzer wrote: > >>> On Wed, 2006-08-02 at 00:33 +0900, Tejun Heo wrote: > >>>> Roger Oberholtzer wrote: > >>>>> Should hotplug work with Intel Corporation 82801GB/GR/GH (ICH7 > >>>>> Family) chipset? I am trying kernel 2.6.17.7 > >> Ah.. I should have spotted this earlier. 2.6.17.7 doesn't contain= =20 > >> updated EH and doesn't support any of new features including=20 > >> hot/warmplug. Please try 2.6.18-rc3. > >=20 > > OK. But I think there are issues with 2.6.18 generally. But I can t= ry it > > to see if this makes this better. >=20 > If you're uncomfortable with -rcX, you can try libata-tj-stable patch= =2E=20 > It contains most of new stuff. >=20 > http://home-tj.org/files/libata-tj-stable/libata-tj-2.6.17.4-20060710= =2Etar.bz2 Thanks for that. But it had no noticeable difference. I looked in the bios on my system to see if I could set the SATA disks to AHCI mode. I did not see anything like that. I could select to do a manual config, in which case I could set things like LBA mode, 32-bit I/O (which defaults to off). So if hots wap require AHCI mode, I seem t= o be screwed. It is a phoenix bios for the supermicro computer. Maybe I can try a different SATA card instead of the stuff on the motherboard. What do you think is the best one re hots waping? Either PCI or PCI-X. > >>> I bet the driver does the right thing. The trick is knowing what = that is > >>> supposed to be. And how to use the various commands on files in /= sys at > >>> the correct time and in the correct order. > >> Really, it's not that complicated. > >=20 > > Once you know what it is you need to do. >=20 > I tried hard to make things just work. If you find things unnecessar= ily=20 > complicated, please let me know. I have a system with an IDE disk with the OS that is fixed. I also have 4 hot swappable SATA disk bays. My use will involve changing the SATA disks to do an analysis of the data they contain. There will be 4 disks in an analysis set. I need to make it easy for the user to insert and remove disks. Rebooting each time is a bad alternative. So, if hot swap does not work, I will have to get warm swap working. I think part of th= e confusion I have is how to deal with disks that are mounted. So I need to get the steps well defined and make those that require user interaction as few as possible. --=20 Roger Oberholtzer OPQ Systems AB Ramb=C3=B6ll Sverige AB Kapellgr=C3=A4nd 7 P.O. Box 4205 SE-102 65 Stockholm, Sweden Tel: Int +46 8-615 60 20 =46ax: Int +46 8-31 42 23