From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 2 Aug 2001 10:07:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 2 Aug 2001 10:06:51 -0400 Received: from web12503.mail.yahoo.com ([216.136.173.195]:25609 "HELO web12503.mail.yahoo.com") by vger.kernel.org with SMTP id ; Thu, 2 Aug 2001 10:06:31 -0400 Message-ID: <20010802140639.24652.qmail@web12503.mail.yahoo.com> Date: Thu, 2 Aug 2001 07:06:39 -0700 (PDT) From: Karcaw Subject: Re: [RFT] Support for ~2144 SCSI discs To: Richard Gooch , linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org Cc: devfs-announce-list@mobilix.ras.ucalgary.ca In-Reply-To: <200107310030.f6V0UeJ13558@mobilix.ras.ucalgary.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I am pleased to see this, I recently expanded the majors number range on my system from 8 majors to 32 by just pushing the secondary range from 65-71 to 65-95, This solution Stomped on other majors, COMPAQ SMART array and IDE6-9, etc. I did not think this was a viable solution to the mainstream kernel so I have only been using it here. I am glad someone with more experience is fixing this one. I am currently working with linux on a the HP VA7100 that can support up to 1024 LUNS (limited by fibre Channel HBAs to 256 or 128) on a single device, so I am using up disks very quickly with only 128 availible. One questions I have on the patch: -in drivers/char/sysrq.c:is_local_disk(...) references the SCSI major numbers, should it change for this patch? I wrote a patch for the Scsi Generic Driver that uses devfs to extend the numbers of genric devices beyond the 256 minor limit. It will use as many major/minor numbers that it can get from devfs for generic scsi drivers. it can be found on the official sg web site at: http://gear.torque.net/sg/ as an experimental driver(sg3120df). Evan Felix --- Richard Gooch wrote: > Hi, all. Below is a patch that adds support for large numbers of > SCSI discs (approximately 2144). I'd like people to try this out. I'm > not doing my normal devfs-patch-v??? thing because this is completely > untested (I'm away from my SCSI boxes), and I don't want to put a > possibly FS-corrupting patch on my ftp archive. The code does compile > and link, though. > > There are 3 cases I'd like to have tested: > - people with 1 to 16 SCSI discs > - people with 17 to 128 SCSI discs > - people with >128 SCSI discs > > because each of these exercises a slightly different setup path. > Please send success or failure reports to me. > > REMINDER: be careful with this patch. It could corrupt your FS. > > Regards, > > Richard.... > Permanent: rgooch@atnf.csiro.au > Current: rgooch@ras.ucalgary.ca ===== --------- Evan Felix Karcaw@rocketmail.com --------- __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/