From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Wilcox Subject: Re: Number of devices that SCSI can support Date: Wed, 9 Jan 2008 08:36:01 -0700 Message-ID: <20080109153601.GR16309@parisc-linux.org> References: <404714.86520.qm@web43145.mail.sp1.yahoo.com> <20080109022233.GM16309@parisc-linux.org> <1199891152.3493.6.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from palinux.external.hp.com ([192.25.206.14]:35111 "EHLO mail.parisc-linux.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752381AbYAIPgD (ORCPT ); Wed, 9 Jan 2008 10:36:03 -0500 Content-Disposition: inline In-Reply-To: <1199891152.3493.6.camel@localhost.localdomain> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: James Bottomley Cc: Vinay Venkataraghavan , linux-scsi@vger.kernel.org On Wed, Jan 09, 2008 at 09:05:52AM -0600, James Bottomley wrote: > On Tue, 2008-01-08 at 19:22 -0700, Matthew Wilcox wrote: > > On Tue, Jan 08, 2008 at 04:55:46PM -0800, Vinay Venkataraghavan wrote: > > > Is there a limit on the number of devices that SCSI supports. In other words, I have a QLogic HBA card, and I am connecting to a SAN which has 64 targets. > > > > I've personally had over five hundred LUNs. You shouldn't be hitting a > > limit here. > > I believe the largest test that's been run was the old OSDL CGL > workgroup ... they went up to 4096. > > However, LUN support depends on the driver and HBA parameters as well > (some choose to have arbitrary limits). I was using a qlogic HBA for my tests, so I don't think this is the problem -- although the original poster claims to have 64 targets, and I had only one target with 128 luns (attached 4 times). -- Intel are signing my paycheques ... these opinions are still mine "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step."