From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: sg driver and Fedora Core 2 Date: 29 May 2004 10:55:24 -0500 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <1085846125.2101.29.camel@mulgrave> References: <40B74725.90403@torque.net> <20040528172535.GD13961@devserv.devel.redhat.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from stat1.steeleye.com ([65.114.3.130]:3255 "EHLO hancock.sc.steeleye.com") by vger.kernel.org with ESMTP id S264308AbUE2Pzd (ORCPT ); Sat, 29 May 2004 11:55:33 -0400 In-Reply-To: <20040528172535.GD13961@devserv.devel.redhat.com> List-Id: linux-scsi@vger.kernel.org To: Alan Cox Cc: Douglas Gilbert , SCSI Mailing List , Arjan van de Ven On Fri, 2004-05-28 at 12:25, Alan Cox wrote: > On Sat, May 29, 2004 at 12:05:25AM +1000, Douglas Gilbert wrote: > > The recently released Fedora Core 2 distribution contains > > a patch that allocates sg device names (e.g. /dev/sg0) > > only to those SCSI devices _not_ "claimed" by other upper > > This is an error. Linus has also vetoed this change. Consider the > Fedora kernel wrong on this point. It isnt however your SG_IO issue I think I don't necessarily regard this as an error: single attachment of ULDs would be very helpful. However, since the mechanics of implementing single attachment are difficult (sg has to be the default attachment of every unclaimed devices, so you need to sort out issues when an ULD is probed *after* sg is attached etc.), I'm very happy for Fedora to demonstrate the feasibility of its implementation before a patch is proposed to mainline. James