Date: Fri, 23 May 2008 19:16:31 GMT From: Martin Laabs <martin.laabs@mailbox.tu-dresden.de> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/123939: msdosfs corruptes new files Message-ID: <200805231916.m4NJGVXP001708@www.freebsd.org> Resent-Message-ID: <200805231920.m4NJK3Vs069045@freefall.freebsd.org>
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>Number: 123939 >Category: misc >Synopsis: msdosfs corruptes new files >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri May 23 19:20:03 UTC 2008 >Closed-Date: >Last-Modified: >Originator: Martin Laabs >Release: 7.0-RELEASE-p1 >Organization: >Environment: FreeBSD martin.laabs 7.0-RELEASE FreeBSD 7.0-RELEASE #0: Sun Feb 24 19:59:52 UTC 2008 root@logan.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386 Muvo V100 MP3 Player >Description: If I mount my USB mass storage device (a MP3-Player in my case) and create some files they get corrupted. I can nearly exclude a defect since the device worked with fine the 6.3 RELEASE and also works if I copy files with Windows. There is also an other strange behaviour. Some time I mount the device to i.e. /mnt but if I ls the directory it is empty (but mount says the device is mounted.) If I demount the device and mount it i.e. to /dos I can access the files. Although some directories are marked as files and can therfore be not accessed. I checked the device with the microsoft scandisc and it reported no errors. However fsck_msdosfs claims an "Invalid signature in boot block: 0000". Reading of the device does work, expect of the directory problem, properly. >How-To-Repeat: # dd if=/dev/zero of=/dev/da7s1 bs=128k dd: /dev/da7s1: short write on character device dd: /dev/da7s1: end of device 7410+0 records in 7409+1 records out 971120640 bytes transferred in 1399.775541 secs (693769 bytes/sec) # newfs_msdos /dev/da7s1 /dev/da7s1: 473246 sectors in 236623 FAT32 clusters (4096 bytes/cluster) bps=2048 spc=2 res=8 nft=2 mid=0xf0 spt=32 hds=64 hid=0 bsec=474180 bspf=463 rdcl=2 infs=1 bkbs=2 # mount -tmsdosfs /dev/da7s1 /mnt # cp /media/Music/Tony/Duncan\ Sheik\ -\ White\ Limousine/01\ -\ Hey\ Casanova.mp3 /mnt # diff /media/Music/Tony/Duncan\ Sheik\ -\ White\ Limousine/01\ -\ Hey\ Casanova.mp3 /mnt # umount /mnt # mount -tmsdosfs /dev/da7s1 /mnt # diff /media/Music/Tony/Duncan\ Sheik\ -\ White\ Limousine/01\ -\ Hey\ Casanova.mp3 /mnt Files /media/Music/Tony/Duncan Sheik - White Limousine/01 - Hey Casanova.mp3 and /mnt/01 - Hey Casanova.mp3 differ >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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