Date: Tue, 24 Apr 2012 07:00:11 GMT From: Yuri <yuri@tsoft.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/167260: msdosfs disk was mounted the second time when the first umount was not clean and mount record still exists Message-ID: <201204240700.q3O70B6A089838@red.freebsd.org> Resent-Message-ID: <201204240710.q3O7A9vm071776@freefall.freebsd.org>
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>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: <vendor 0xffee> at usbus3
umass0: <vendor 0xffee product 0x0100, class 0/0, rev 2.00/1.00, addr 3> 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: <FNK TECH USB CARD READER 2.33> 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: <vendor 0xffee> 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.
<!!! Here device mount record was left !!!>
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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