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manimal347

Member

Registered: 2008-05-31

Posts: 7

USB floppy's attempt to access beyond end of device (move to hardware!

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(sorry, wrong forum. Reposting in hardware, and send replies there, please.)
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Tested drive: works fine on XP computer, and was working yesterday. Was using hal to automount, and admittedly, NOT unmounting before ejecting. Have tried restarting and editing both fstab and mtab. Reads disks and mounts them, but read-only, and with gross over-read attempts: 720k media often yields purported iolume sizes of 40GB or greater, while 1.44MB media has yielded partitions as large as ten GB. File names are sometimes changed, and a few massive ones sit inside the volumes with gibberish names. Clearly, the drive is not reading the FAT12 tables correctly. And yes, curiously, 720KB media seems to cause more problems, with larger volumes and more scrabled file names. Drive is a Mitsumi D353FUE, though I doubt that's terribly relevant, and I updated the kernel yesterday, though the machine continued to read floppies afterwards... for a while. Anyone else having similiar woes?

DOSFSCK has reported:
Read 512 bytes at 0:Is a directory                 on a 720k
and also told me I have 246 FAT tables on a 3.5" DS/HD!

(dmesg output, with many buffer errors and panics excised for space)

sd 2:0:0:0: [sdb] 1440 512-byte hardware sectors (1 MB)
sd 2:0:0:0: [sdb] Write Protect is off
sd 2:0:0:0: [sdb] Mode Sense: 00 52 1e 00
sd 2:0:0:0: [sdb] Assuming drive cache: write through
__ratelimit: 76 callbacks suppressed
Buffer I/O error on device sdb, logical block 2688
Buffer I/O error on device sdb, logical block 2689
Buffer I/O error on device sdb, logical block 2688
Buffer I/O error on device sdb, logical block 2689
FAT: Filesystem panic (dev sdb)
    invalid access to FAT (entry 0x00002020)
FAT: Filesystem panic (dev sdb)
    invalid access to FAT (entry 0x00002020)
FAT: Filesystem panic (dev sdb)
    invalid access to FAT (entry 0x00002020)
FAT: Filesystem panic (dev sdb)
    invalid access to FAT (entry 0x00002020)
attempt to access beyond end of device
sdb: rw=0, want=8256, limit=2880
__ratelimit: 230 callbacks suppressed
Buffer I/O error on device sdb, logical block 8255
FAT: Filesystem panic (dev sdb)
    invalid access to FAT (entry 0x00002020)
FAT: Filesystem panic (dev sdb)
    invalid access to FAT (entry 0x00002020)
FAT: Filesystem panic (dev sdb)
    invalid access to FAT (entry 0x00002020)
FAT: Filesystem panic (dev sdb)
    invalid access to FAT (entry 0x00002020)
attempt to access beyond end of device
sdb: rw=0, want=8256, limit=2880
Buffer I/O error on device sdb, logical block 8255

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Fstab
# <file system>        <dir>         <type>    <options>          <dump> <pass>
none                   /dev/pts      devpts    defaults            0      0
none                   /dev/shm      tmpfs     defaults            0      0

/dev/cdrom /media/cdrom   iso9660   ro,user,noauto,unhide   0      0
/dev/dvd /media/dvd  iso9660   ro,user,noauto,unhide   0      0
/dev/fd0 /media/fl   vfat   user,noauto   0      0
/dev/sda2 / ext3 defaults 0 1
/dev/sda3 swap swap defaults 0 0

-------
mtab
-------
/dev/sda2 / ext3 rw 0 0
none /dev ramfs rw 0 0
none /proc proc rw 0 0
none /sys sysfs rw 0 0
none /dev/pts devpts rw 0 0
none /dev/shm tmpfs rw 0 0
/dev/sda1 /media/disk ntfs rw,nosuid,nodev 0 0
/dev/sdb /media/disk auto rw,noexec,nosuid,nodev,user=radiounix 0 0
/dev/sdb /media/disk user,noauto 0 0

Last edited by manimal347 (2008-12-29 20:04:51)