From owner-freebsd-bugs@FreeBSD.ORG Tue Apr 24 07:10:09 2012 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 51643106564A for ; Tue, 24 Apr 2012 07:10:09 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 26CF28FC0A for ; Tue, 24 Apr 2012 07:10:09 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id q3O7A90A071777 for ; Tue, 24 Apr 2012 07:10:09 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id q3O7A9vm071776; Tue, 24 Apr 2012 07:10:09 GMT (envelope-from gnats) Resent-Date: Tue, 24 Apr 2012 07:10:09 GMT Resent-Message-Id: <201204240710.q3O7A9vm071776@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Yuri Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 23B151065673 for ; Tue, 24 Apr 2012 07:00:12 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from red.freebsd.org (red.freebsd.org [IPv6:2001:4f8:fff6::22]) by mx1.freebsd.org (Postfix) with ESMTP id DA4C98FC16 for ; Tue, 24 Apr 2012 07:00:11 +0000 (UTC) Received: from red.freebsd.org (localhost [127.0.0.1]) by red.freebsd.org (8.14.4/8.14.4) with ESMTP id q3O70Bsu089839 for ; Tue, 24 Apr 2012 07:00:11 GMT (envelope-from nobody@red.freebsd.org) Received: (from nobody@localhost) by red.freebsd.org (8.14.4/8.14.4/Submit) id q3O70B6A089838; Tue, 24 Apr 2012 07:00:11 GMT (envelope-from nobody) Message-Id: <201204240700.q3O70B6A089838@red.freebsd.org> Date: Tue, 24 Apr 2012 07:00:11 GMT From: Yuri To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: kern/167260: msdosfs disk was mounted the second time when the first umount was not clean and mount record still exists X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 Apr 2012 07:10:09 -0000 >Number: 167260 >Category: kern >Synopsis: msdosfs disk was mounted the second time when the first umount was not clean and mount record still exists >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Apr 24 07:10:08 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Yuri >Release: 9.0 amd64 >Organization: n/a >Environment: >Description: I had the broken flash disk, and few write operations failed. And umount operation hanged. So I had to pull the USB drive out. After checking, I mounted it again, and it works now. However, mount command shows it mounted twice (!!!): Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/da0s1 7753672 7039040 714632 91% /mnt/fat1 /dev/da0s1 7753672 7608888 144784 98% /mnt/fat1 === log of the failed disk operations === ugen3.3: at usbus3 umass0: on usbus3 umass0: SCSI over Bulk-Only; quirks = 0x4100 umass0:7:0:-1: Attached to scbus7 da0 at umass-sim0 bus 0 scbus7 target 0 lun 0 da0: Removable Direct Access SCSI-2 device da0: 40.000MB/s transfers da0: 7580MB (15523840 512 byte sectors: 255H 63S/T 966C) g_vfs_done():da0s1[WRITE(offset=7208050688, length=8192)]error = 5 g_vfs_done():da0s1[WRITE(offset=7208050688, length=8192)]error = 5 g_vfs_done():da0s1[WRITE(offset=7208050688, length=8192)]error = 5 g_vfs_done():da0s1[WRITE(offset=7208050688, length=8192)]error = 5 fsync: giving up on dirty 0xfffffe02a583b000: tag devfs, type VCHR usecount 1, writecount 0, refcount 989 mountedhere 0xfffffe01378d9c00 flags () v_object 0xfffffe024d34c658 ref 0 pages 1025 lock type devfs: EXCL by thread 0xfffffe020d2a78c0 (pid 8156) dev da0s1 g_vfs_done():da0s1[WRITE(offset=7208050688, length=8192)]error = 5 fsync: giving up on dirty 0xfffffe02a583b000: tag devfs, type VCHR usecount 1, writecount 0, refcount 989 mountedhere 0xfffffe01378d9c00 flags () v_object 0xfffffe024d34c658 ref 0 pages 1025 lock type devfs: EXCL by thread 0xfffffe0042809460 (pid 8168) dev da0s1 ugen3.3: at usbus3 (disconnected) umass0: at uhub3, port 3, addr 3 (disconnected) (da0:umass-sim0:0:0:0): lost device - 0 outstanding, 1 refs (da0:umass-sim0:0:0:0): removing device entry Device da0s1 went missing before all of the data could be written to it; expect data loss. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: