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

[Matthias Apitz]

Hello,

I've just bought a new USB key. The label claims "8 GByte" which is the
first lying; it shows up as only ~7.5 GByte in /var/log/messages, but
there seems to be another bigger problem:

Mar  5 08:48:32 rebelion root: Unknown USB device: vendor 0x1307 product 0x0165 bus uhub4
Mar  5 08:48:33 rebelion kernel: umass0: <USBest Technology USB Mass Storage Device, class 0/0, rev 2.00/1.00, addr 2> 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: <Ut165 USB2FlashStorage 0.00> 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
Filesystem            Size    Used   Avail Capacity  Mounted on
/dev/da0              7.5G     48K    7.5G     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

# ls -lh /mnt/big
-rwxr-xr-x  1 root  wheel   4,0G  5 mar 09:01 /mnt/big

# df -kh /mnt
Filesystem            Size    Used   Avail Capacity  Mounted on
/dev/da0              7.5G    7.5G      0B   100%    /mnt

How is this possible that ls(1) shows 4G while df(1) 7.5G used?
Thx

	matthias
-- 
Matthias Apitz
Manager Technical Support - OCLC GmbH
Gruenwalder Weg 28g - 82041 Oberhaching - Germany
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