Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 28 Feb 2003 15:00:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 28 Feb 2003 15:00:26 -0500 Received: from scrye.com ([216.17.180.1]:65261 "EHLO scrye.com") by vger.kernel.org with ESMTP id ; Fri, 28 Feb 2003 15:00:23 -0500 Message-ID: <20030228201041.8334.qmail@scrye.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Fri, 28 Feb 2003 13:10:38 -0700 From: Kevin Fenzi To: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org Subject: SCSI check sense bit not getting back to st driver X-Mailer: VM 7.07 under 21.4 (patch 8) "Honest Recruiter" XEmacs Lucid Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1781 Lines: 55 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 [ reposted under this subject instead of the old one about end of tape handling] I (and several others at least) have been seeing a problem with end of tape error handling under linux. Instead of getting a ENOSPC, you get a EIO error when you hit the end of the tape. This makes multivolume backups kinda difficult. Some more information on this problem was discovered by Tim Jones : Tim> Additional news. Tim> This is actually related to the check sense bit not being Tim> propagated up to the ST driver. A simpler test (beats writing Tim> 40GB to a tape ...): Tim> use a 2.2.19/20/21 or 22 kernel, or a 2.4.9-34 kernel Remove the Tim> tape from the tape device execute: Tim> tar -cvvf /dev/nst0 /etc Tim> You will receive a "No medium found" message Tim> Replace the kernel with 2.4.11+ and repeat the tar write test. Tim> This time, you will receive a write failure. Tim> This is caused by the check sense not being set and the ST driver Tim> sending up a EIO instead of the ENOMEDIUM. So, it looks like this problem is _not_ in the st driver itself, but somewhere in the SCSI layer. Anyone have any ideas how to better track it down? Happy to run debug code/test cases here. kevin -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 iD8DBQE+X8JA3imCezTjY0ERAjvaAJ91SmJHXQ/d3xHZ70qDsdIFCkHQtwCeJ7rB MGmw0pHOE0t6WfH+NC1B8W8= =PLfR -----END PGP SIGNATURE----- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/