[Mldonkey-bugs] Disk space preallocation

[Markus Hitter]

Heck, I'm still wrestling with corrupt files and I still think my own 
client is the culprit. This time, I started a download and before the 
first bytes arrived, I stopped the donkey and had a closer look at my 
temp/ directory:

Nobile:~/MLdonkey2.4rc8/temp$ df -k .
Filesystem   1K-blocks     Used    Avail Capacity  Mounted on
/dev/disk0s3   4942787  4544568   151080    96%    /Volumes/Party
Nobile:~/MLdonkey2.4rc8/temp$ ll E2AFE281B2035AFFD7390C5C722974B1
-rw-r--r--  1 mah  staff  132759552 May  5 20:58 
E2AFE281B2035AFFD7390C5C722974B1

Nobile:~/MLdonkey2.4rc8/temp$ bzip2 E2AFE281B2035AFFD7390C5C722974B1
Nobile:~/MLdonkey2.4rc8/temp$ df -k .
Filesystem   1K-blocks     Used    Avail Capacity  Mounted on
/dev/disk0s3   4942787  4544557   151091    96%    /Volumes/Party
Nobile:~/MLdonkey2.4rc8/temp$ ll E2AFE281B2035AFFD7390C5C722974B1.bz2
-rw-r--r--  1 mah  staff  114 May  5 20:58 
E2AFE281B2035AFFD7390C5C722974B1.bz2

Nobile:~/MLdonkey2.4rc8/temp$ bzip2 -d 
E2AFE281B2035AFFD7390C5C722974B1.bz2
Nobile:~/MLdonkey2.4rc8/temp$ df -k .
Filesystem   1K-blocks     Used    Avail Capacity  Mounted on
/dev/disk0s3   4942787  4674336    21312    99%    /Volumes/Party
Nobile:~/MLdonkey2.4rc8/temp$ ll E2AFE281B2035AFFD7390C5C722974B1
-rw-r--r--  1 mah  staff  132759552 May  5 20:58 
E2AFE281B2035AFFD7390C5C722974B1

Huh. Compressing and then decompressing the very same file filled my 
disk. Can somebody verify this? OS X 10.2.5 on a iBook 640 MB RAM here.

Since I yet have to get in touch with ObjCaml it will take a while 
until I can have a look at the source and extract a small test case. 
Test apps are welcome, though.


Cheers,
Markus

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Dipl. Ing. Markus Hitter
http://www.jump-ing.de/