From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@bugzilla.kernel.org Subject: [Bug 80711] [PATCH]SG_FLAG_LUN_INHIBIT is no longer implemented and there's not way to prevent the kernel from using the 2nd cdb byte for the LUN Date: Wed, 06 Aug 2014 20:09:46 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from mail.kernel.org ([198.145.19.201]:51466 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753332AbaHFUJv (ORCPT ); Wed, 6 Aug 2014 16:09:51 -0400 Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C187D20170 for ; Wed, 6 Aug 2014 20:09:49 +0000 (UTC) Received: from bugzilla1.web.kernel.org (bugzilla1.web.kernel.org [172.20.200.51]) by mail.kernel.org (Postfix) with ESMTP id E9D482017D for ; Wed, 6 Aug 2014 20:09:47 +0000 (UTC) In-Reply-To: Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=80711 --- Comment #5 from Alan Stern --- On Wed, 6 Aug 2014, Christoph Hellwig wrote: > On Wed, Aug 06, 2014 at 03:29:47PM +0200, Douglas Gilbert wrote: > > If not and since I'm told black lists and the like won't > > work, my advice for the record is to use FreeBSD or Windows > > for tools that need this capability. > > I doubt either of them forces users to hack up flags for these cases. Why was this change needed in the first place? There's no explanation in the patch itself. > At least for windows I suspect it just never sends the LUN encoded > in the CDB and treats USB devices special instead of our insistance > on pretending they are SCSI-2. We no longer pretend that USB mass-storage devices have any particular SCSI level. See commit 09b6b51b0b6c. > Maybe some of the USB people have on the wire traces or access to > device or windows documentation on this? Most likely it varies with the version of Windows and the INQUIRY data returned by the device. I can obtain hardware traces for the kinds of devices and computers lying around here. But what sort of combinations should I test? Alan Stern -- You are receiving this mail because: You are the assignee for the bug.