FAT: Filesystem panic
George Chelidze
I'v got 2 boxes running squeeze and lenny, both up to date. On a box
with squeeze, I copied 1.8G images to a 2G flash drive and tried to move
them to my lenny box. After mounting a drive (hal) on a lenny box cpu
jumped to 100%, and after about 30 secs a new window came up with some
weird file names. Here is the output from cmd line:
# ls -l
ls: cannot access =jm°£û≈,.1/¡: No such file or directory
ls: cannot access íz╫ƒuìöm.«/e: No such file or directory
ls: cannot access kε╔┌*╧┘á.?/╧: No such file or directory
...
dmesg output:
[5372932.625012] FAT: Filesystem panic (dev sdd1)
[5372932.625016] invalid access to FAT (entry 0x0000f7ab)
....
[5374942.645072] FAT: Filesystem panic (dev sdd1)
[5374942.645075] fat_bmap_cluster: request beyond EOF (i_pos 8268)
I tried to mount a drive on a squeeze box, but without any luck. Same
weird file names there. I thought I lost my data, but no! It can be
accessed from WindowsXP and Mac OS X 10.5.8 Leopard without any
problems. Any ideas?
Best Regards,
George Chelidze
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Camaleón
> I'v got 2 boxes running squeeze and lenny, both up to date. On a box
> with squeeze, I copied 1.8G images to a 2G flash drive and tried to move
> them to my lenny box. After mounting a drive (hal) on a lenny box cpu
> jumped to 100%, and after about 30 secs a new window came up with some
> weird file names. Here is the output from cmd line:
>
> # ls -l
> ls: cannot access =jm°£û≈,.1/¡: No such file or directory ls: cannot
> access íz╫ƒuìöm.«/e: No such file or directory ls: cannot access
> kε╔┌*╧┘á.?/╧: No such file or directory ...
(...)
First, ensure you have put full backup with all the data in a safe place.
Now you can start playing :-)
What is the output of "mount" command?
Also, try to scandisk and defrag the unit from windows box and then
attach the flash drive in linux.
Greetings,
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Stanisław Findeisen
> I'v got 2 boxes running squeeze and lenny, both up to date. On a box
> with squeeze, I copied 1.8G images to a 2G flash drive and tried to move
> them to my lenny box. After mounting a drive (hal) on a lenny box cpu
> jumped to 100%, and after about 30 secs a new window came up with some
> weird file names. Here is the output from cmd line:
>
> # ls -l
> ls: cannot access =jm°£û≈,.1/¡: No such file or directory
> ls: cannot access íz╫ƒuìöm.«/e: No such file or directory
> ls: cannot access kε╔┌*╧┘á.?/╧: No such file or directory
> ...
>
> dmesg output:
>
> [5372932.625012] FAT: Filesystem panic (dev sdd1)
> [5372932.625016] invalid access to FAT (entry 0x0000f7ab)
> ....
> [5374942.645072] FAT: Filesystem panic (dev sdd1)
> [5374942.645075] fat_bmap_cluster: request beyond EOF (i_pos 8268)
Hm, up to date Lenny with 5374942 seconds uptime?
Maybe you should reboot after you do an update? Not sure how update
works but if it only changes the files, and not the images of running
kernel or processes... And if you do several updates over 2 months
period with no reboot... ??
Have you checked what your file names:
=jm°£û≈,.1/¡
íz╫ƒuìöm.«/e
kε╔┌*╧┘á.?/╧
are in hex, for instance?
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OpenPGP: DFD9 0146 3794 9CF6 17EA D63F DBF5 8AA8 3B31 FE8A
Ron Johnson
[snip]
>
> Hm, up to date Lenny with 5374942 seconds uptime?
>
> Maybe you should reboot after you do an update? Not sure how update
> works but if it only changes the files, and not the images of running
> kernel or processes... And if you do several updates over 2 months
> period with no reboot... ??
>
The checkinstall (in the debian-goodies package) script will show you
all the processes holding obsolete images, and will usually tell you the
script to run in order to restart them.
Only kernel upgrades require a reboot (but there are some clever people
who have gotten around that).
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George Chelidze
> On 2011-04-01 13:06, George Chelidze wrote:
>> I'v got 2 boxes running squeeze and lenny, both up to date. On a box
>> with squeeze, I copied 1.8G images to a 2G flash drive and tried to move
>> them to my lenny box. After mounting a drive (hal) on a lenny box cpu
>> jumped to 100%, and after about 30 secs a new window came up with some
>> weird file names. Here is the output from cmd line:
>>
>> # ls -l
>> ls: cannot access =jm°£û≈,.1/¡: No such file or directory
>> ls: cannot access íz╫ƒuìöm.«/e: No such file or directory
>> ls: cannot access kε╔┌*╧┘á.?/╧: No such file or directory
>> ...
>>
>> dmesg output:
>>
>> [5372932.625012] FAT: Filesystem panic (dev sdd1)
>> [5372932.625016] invalid access to FAT (entry 0x0000f7ab)
>> ....
>> [5374942.645072] FAT: Filesystem panic (dev sdd1)
>> [5374942.645075] fat_bmap_cluster: request beyond EOF (i_pos 8268)
>
> Hm, up to date Lenny with 5374942 seconds uptime?
>
> Maybe you should reboot after you do an update? Not sure how update
> works but if it only changes the files, and not the images of running
> kernel or processes... And if you do several updates over 2 months
> period with no reboot... ??
I usually reboot after kernel updates, however it's another story. Same
results on fresh Squeeze box with 2 hours of uptime.
> Have you checked what your file names:
>
> =jm°£û≈,.1/¡
> íz╫ƒuìöm.«/e
> kε╔┌*╧┘á.?/╧
No, as I have no idea what to search in a hex dump...
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Stanisław Findeisen
You can try to copy your FAT filesystem using dd to another device and
see if this is a hardware / driver problem or FAT support problem.
You can also try to access this FAT filesystem using yet another Linux
instance --- some live CD for example.
Is your FAT support compiled into the kernel or you use a kernel module?
Osamu Aoki
On Fri, Apr 01, 2011 at 03:06:05PM +0400, George Chelidze wrote:
> Hello,
>
> I'v got 2 boxes running squeeze and lenny, both up to date. On a box
> with squeeze, I copied 1.8G images to a 2G flash drive and tried to
> move them to my lenny box. After mounting a drive (hal) on a lenny
> box cpu jumped to 100%, and after about 30 secs a new window came up
> with some weird file names. Here is the output from cmd line:
>
> # ls -l
> ls: cannot access =jm°£û≈,.1/¡: No such file or directory
> ls: cannot access íz╫ƒuìöm.«/e: No such file or directory
> ls: cannot access kε╔┌*╧┘á.?/╧: No such file or directory
> ...
>
> dmesg output:
>
> [5372932.625012] FAT: Filesystem panic (dev sdd1)
> [5372932.625016] invalid access to FAT (entry 0x0000f7ab)
> ....
> [5374942.645072] FAT: Filesystem panic (dev sdd1)
> [5374942.645075] fat_bmap_cluster: request beyond EOF (i_pos 8268)
>
> I tried to mount a drive on a squeeze box, but without any luck.
> Same weird file names there. I thought I lost my data, but no! It
> can be accessed from WindowsXP and Mac OS X 10.5.8 Leopard without
> any problems. Any ideas?
Hmmm.... This seems to be encoding issue.
http://www.debian.org/doc/manuals/debian-reference/ch08.en.html#_filename_encoding
WindowsXP and Mac OS X 10.5.8 Leopard are UTF-8 system.
Please play with it to find out which encoding is used on FAT.
Osamu
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