Re: USB key with 7.5 GByte but no space left on device after 4 GByte written

2009-03-05 Thread Kevin Kinsey

Matthias Apitz wrote:


to end this threat, I did:

# dd if=/dev/zero of=/dev/da0 bs=64k count=1
# newfs_msdos /dev/da0
# mount -t msdosfs /dev/da0 /mnt
# time cat file file file > /mnt/big
cat: stdout: File too large
0.276u 19.421s 14:36.63 2.2%11+1180k 33887+65536io 0pf+0w

# df -kh /mnt
FilesystemSizeUsed   Avail Capacity  Mounted on
/dev/da0  7.5G4.0G3.5G53%/mnt

i.e. it writes the maximal file size of 4G in FAT32 and 3.5G are left as
free;

the write speed is
4294963200 in 14:36.63 minutes, i.e. 4902926 per sec;

matthias


Probably I'm just making more noise; you didn't give any
hardware details.  Some manufacturers (I have a SanDisk
Cruzer) are now putting multiple partitions on a flash stick;
the Cruzer has one which, on Windows,emulates a CD-ROM drive
(dunno why a CD emulation would take up 3.5 GB, tho).

Kevin Kinsey
--
It is sweet to let the mind unbend on occasion.
-- Quintus Horatius Flaccus (Horace)
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Re: USB key with 7.5 GByte but no space left on device after 4 GByte written

2009-03-05 Thread Norbert Papke
On March 5, 2009, Matthias Apitz wrote:
> El día Thursday, March 05, 2009 a las 10:48:52AM +0100, Wojciech Puchar > to 
end this threat, I did:
>
> # dd if=/dev/zero of=/dev/da0 bs=64k count=1
> # newfs_msdos /dev/da0
> # mount -t msdosfs /dev/da0 /mnt
> # time cat file file file > /mnt/big
> cat: stdout: File too large
> 0.276u 19.421s 14:36.63 2.2%11+1180k 33887+65536io 0pf+0w
>
> # df -kh /mnt
> FilesystemSizeUsed   Avail Capacity  Mounted on
> /dev/da0  7.5G4.0G3.5G53%/mnt
>
> i.e. it writes the maximal file size of 4G in FAT32 and 3.5G are left as
> free;

Seems to work as it should.  The maximum allowed file size on a FAT32 file 
system is 4GB (-1 byte).  See

http://en.wikipedia.org/wiki/File_Allocation_Table#FAT32

Cheers,

-- Norbert Papke.
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Re: USB key with 7.5 GByte but no space left on device after 4 GByte written

2009-03-05 Thread Matthias Apitz
El día Thursday, March 05, 2009 a las 03:26:12PM +0100, Paul B. Mahol escribió:

> On 3/5/09, Matthias Apitz  wrote:
> > El dia Thursday, March 05, 2009 a las 10:48:52AM +0100, Wojciech Puchar
> > escribio:
> >
> >> >>formatted properly?
> >> >
> >> >I did a 'ls -l /dev/da*' after key insert and there was only /dev/da0;
> >> >maybe I should do
> >> >
> >> ># newfs_msdos /dev/da0
> >> >
> >> >???
> >>
> >> to be sure do
> >>
> >> dd if=/dev/zero of=/dev/da0 bs=64k count=1
> >>
> >> before to clean anything from beginning, if any mess is there.
> >
> > to end this threat, I did:
> >
> > # dd if=/dev/zero of=/dev/da0 bs=64k count=1
> > # newfs_msdos /dev/da0
> > # mount -t msdosfs /dev/da0 /mnt
> > # time cat file file file > /mnt/big
> > cat: stdout: File too large
> > 0.276u 19.421s 14:36.63 2.2%11+1180k 33887+65536io 0pf+0w
> >
> > # df -kh /mnt
> > FilesystemSizeUsed   Avail Capacity  Mounted on
> > /dev/da0  7.5G4.0G3.5G53%/mnt
> >
> > i.e. it writes the maximal file size of 4G in FAT32 and 3.5G are left as
> > free;
> >
> > the write speed is
> > 4294963200 in 14:36.63 minutes, i.e. 4902926 per sec;
> 
> 
> should'nt you first try to measure with dd(1) how da0 is big
> before we start blaming msdosfs:
> 
> # dd if=/dev/da0 of=/dev/null bs=1m  ?

I've not blamed anybody; please check the full thread; I've reported a
problem with a lot of details and got help;

the device is around 7.7G but wasn't useable like that as it was
formated by the factory; nothing more;

matthias
-- 
Matthias Apitz
Manager Technical Support - OCLC GmbH
Gruenwalder Weg 28g - 82041 Oberhaching - Germany
t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211
e  - w http://www.oclc.org/ http://www.UnixArea.de/
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Re: USB key with 7.5 GByte but no space left on device after 4 GByte written

2009-03-05 Thread Paul B. Mahol
On 3/5/09, Matthias Apitz  wrote:
> El dia Thursday, March 05, 2009 a las 10:48:52AM +0100, Wojciech Puchar
> escribio:
>
>> >>formatted properly?
>> >
>> >I did a 'ls -l /dev/da*' after key insert and there was only /dev/da0;
>> >maybe I should do
>> >
>> ># newfs_msdos /dev/da0
>> >
>> >???
>>
>> to be sure do
>>
>> dd if=/dev/zero of=/dev/da0 bs=64k count=1
>>
>> before to clean anything from beginning, if any mess is there.
>
> to end this threat, I did:
>
> # dd if=/dev/zero of=/dev/da0 bs=64k count=1
> # newfs_msdos /dev/da0
> # mount -t msdosfs /dev/da0 /mnt
> # time cat file file file > /mnt/big
> cat: stdout: File too large
> 0.276u 19.421s 14:36.63 2.2%11+1180k 33887+65536io 0pf+0w
>
> # df -kh /mnt
> FilesystemSizeUsed   Avail Capacity  Mounted on
> /dev/da0  7.5G4.0G3.5G53%/mnt
>
> i.e. it writes the maximal file size of 4G in FAT32 and 3.5G are left as
> free;
>
> the write speed is
> 4294963200 in 14:36.63 minutes, i.e. 4902926 per sec;


should'nt you first try to measure with dd(1) how da0 is big
before we start blaming msdosfs:

# dd if=/dev/da0 of=/dev/null bs=1m  ?

-- 
Paul
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Re: USB key with 7.5 GByte but no space left on device after 4 GByte written

2009-03-05 Thread Matthias Apitz
El día Thursday, March 05, 2009 a las 10:48:52AM +0100, Wojciech Puchar 
escribió:

> >>formatted properly?
> >
> >I did a 'ls -l /dev/da*' after key insert and there was only /dev/da0;
> >maybe I should do
> >
> ># newfs_msdos /dev/da0
> >
> >???
> 
> to be sure do
> 
> dd if=/dev/zero of=/dev/da0 bs=64k count=1
> 
> before to clean anything from beginning, if any mess is there.

to end this threat, I did:

# dd if=/dev/zero of=/dev/da0 bs=64k count=1
# newfs_msdos /dev/da0
# mount -t msdosfs /dev/da0 /mnt
# time cat file file file > /mnt/big
cat: stdout: File too large
0.276u 19.421s 14:36.63 2.2%11+1180k 33887+65536io 0pf+0w

# df -kh /mnt
FilesystemSizeUsed   Avail Capacity  Mounted on
/dev/da0  7.5G4.0G3.5G53%/mnt

i.e. it writes the maximal file size of 4G in FAT32 and 3.5G are left as
free;

the write speed is
4294963200 in 14:36.63 minutes, i.e. 4902926 per sec;

matthias
-- 
Matthias Apitz
Manager Technical Support - OCLC GmbH
Gruenwalder Weg 28g - 82041 Oberhaching - Germany
t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211
e  - w http://www.oclc.org/ http://www.UnixArea.de/
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Re: USB key with 7.5 GByte but no space left on device after 4 GByte written

2009-03-05 Thread Wojciech Puchar

formatted properly?


I did a 'ls -l /dev/da*' after key insert and there was only /dev/da0;
maybe I should do

# newfs_msdos /dev/da0

???


to be sure do

dd if=/dev/zero of=/dev/da0 bs=64k count=1

before to clean anything from beginning, if any mess is there.
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Re: USB key with 7.5 GByte but no space left on device after 4 GByte written

2009-03-05 Thread Wojciech Puchar

formatted properly?


I did a 'ls -l /dev/da*' after key insert and there was only /dev/da0;
maybe I should do

# newfs_msdos /dev/da0


yes. anyway - windoze at least XP no more needs partitions on such 
devices.




???

Thx

matthias
--
Matthias Apitz
Manager Technical Support - OCLC GmbH
Gruenwalder Weg 28g - 82041 Oberhaching - Germany
t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211
e  - w http://www.oclc.org/ http://www.UnixArea.de/
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Re: USB key with 7.5 GByte but no space left on device after 4 GByte written

2009-03-05 Thread Matthias Apitz
El día Thursday, March 05, 2009 a las 01:09:27AM -0800, Charles Oppermann 
escribió:

> 
> > > 08:48:33 rebelion kernel: da0 at umass-sim0 bus 0 target 0 lun 0 Mar  5
> > > 08:48:33 rebelion kernel: da0:  Removable
> > > Direct Access SCSI-2 device Mar  5 08:48:33 rebelion kernel: da0:
> > > 40.000MB/s transfers
> > > Mar  5 08:48:33 rebelion kernel: da0: 7712MB (15794176 512 byte sectors:
> > > 255H 63S/T 983C) Mar  5 08:48:35 rebelion kernel: GEOM_LABEL: Label for
> > > provider da0 is msdosfs/pen disk.
> > > # mount -t msdosfs /dev/da0 /mnt
> >
> > msdosfs bug or strangely made msdos filesystem on that pendrive.
> > if you use it FreeBSD only, clear first 4kB with dd, then do newfs and
> > use as UFS
> > if not - use newfs_msdos
> 
> Wouldn't it be /dev/da0s1?  Is it possible that the drive hasn't been 
> formatted properly?

I did a 'ls -l /dev/da*' after key insert and there was only /dev/da0;
maybe I should do

# newfs_msdos /dev/da0

???

Thx

matthias
-- 
Matthias Apitz
Manager Technical Support - OCLC GmbH
Gruenwalder Weg 28g - 82041 Oberhaching - Germany
t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211
e  - w http://www.oclc.org/ http://www.UnixArea.de/
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Re: USB key with 7.5 GByte but no space left on device after 4 GByte written

2009-03-05 Thread Charles Oppermann

> > 08:48:33 rebelion kernel: da0 at umass-sim0 bus 0 target 0 lun 0 Mar  5
> > 08:48:33 rebelion kernel: da0:  Removable
> > Direct Access SCSI-2 device Mar  5 08:48:33 rebelion kernel: da0:
> > 40.000MB/s transfers
> > Mar  5 08:48:33 rebelion kernel: da0: 7712MB (15794176 512 byte sectors:
> > 255H 63S/T 983C) Mar  5 08:48:35 rebelion kernel: GEOM_LABEL: Label for
> > provider da0 is msdosfs/pen disk.
> > # mount -t msdosfs /dev/da0 /mnt
>
> msdosfs bug or strangely made msdos filesystem on that pendrive.
> if you use it FreeBSD only, clear first 4kB with dd, then do newfs and
> use as UFS
> if not - use newfs_msdos

Wouldn't it be /dev/da0s1?  Is it possible that the drive hasn't been 
formatted properly?
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Re: USB key with 7.5 GByte but no space left on device after 4 GByte written

2009-03-05 Thread Wojciech Puchar

Mar  5 08:48:33 rebelion kernel: umass0:  on uhub4
Mar  5 08:48:33 rebelion kernel: da0 at umass-sim0 bus 0 target 0 lun 0
Mar  5 08:48:33 rebelion kernel: da0:  Removable 
Direct Access SCSI-2 device
Mar  5 08:48:33 rebelion kernel: da0: 40.000MB/s transfers
Mar  5 08:48:33 rebelion kernel: da0: 7712MB (15794176 512 byte sectors: 255H 
63S/T 983C)
Mar  5 08:48:35 rebelion kernel: GEOM_LABEL: Label for provider da0 is 
msdosfs/pen disk.

# mount -t msdosfs /dev/da0 /mnt

Mar  5 08:50:18 rebelion kernel: GEOM_LABEL: Label msdosfs/pen disk removed.

# df -kh /mnt
FilesystemSizeUsed   Avail Capacity  Mounted on
/dev/da0  7.5G 48K7.5G 0%/mnt

# ls -lh file
total 3745826
-r--r--r--  1 guru  wheel   1,7G 16 may  2007 file

# time cat file file file > /mnt/big
cat: stdout: No space left on device
0.194u 13.064s 8:46.32 2.5% 10+1100k 33429+65536io 0pf+0w



msdosfs bug or strangely made msdos filesystem on that pendrive.

if you use it FreeBSD only, clear first 4kB with dd, then do newfs and 
use as UFS


if not - use newfs_msdos
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