[openbeos] Large File Woes
- From: Tyler Dauwalder <tyler@xxxxxxxxxxxxx>
- To: OpenBeOS <openbeos@xxxxxxxxxxxxx>
- Date: Mon, 05 Jul 2004 14:38:22 -0700
I've been working on large image support for UDF, and I've run into an
interesting problem. I'm trying to make a udf image of my home directory,
which is 5 or 6 GB large. I've done this before and created images about
4GB large, but with my recent attempts, I'm getting B_DEVICE_FULL errors
from the operating system when I get to about 1.25GB. The device is in
fact, however, not full.
I then created a test program which just writes a simple string of data
over and over to a given file using either open()/write() or
BFile()/BFile::Write(), and both versions successfully create images larger
than 1.25GB.
The really interesting part comes when I try to append data to the end of
these large files. In the listing below, home.udf is the udf image file I
was attempting to create with makeudfimage, bfile.udf is the random-data
file created via BFile, and open.udf is the random-data file created via
open()/write(). As you can see, I can append data to the two random-data
files (I killed the cat with ^C after a few seconds), but attempting to
append data to home.udf craps out with a B_DEVICE_FULL error (despite the
fact I have over 1GB free on the drive, still).
--------------------------------------------------------------
/boot $ ll
total 5639371
drwxr-xr-x 1 baron users 4096 Jul 5 13:08 apps
drwxr-xr-x 1 baron users 2048 Aug 24 2003 beos
-rws--sr-- 1 baron users 1615000000 Jul 5 14:16 bfile.udf
drwxr-xr-x 1 baron users 2048 Jan 19 19:20 biggg
drwxr-xr-x 1 baron users 2048 Aug 24 2003 demos
drwxr-xr-x 1 baron users 2048 Aug 24 2003 develop
drwxr-xr-x 1 baron users 5120 Jul 5 14:13 home
-rw-r--r-- 1 baron users 1343551488 Jul 5 13:59 home.udf
-r-S--Sr-- 1 baron users 2816141120 Jul 5 13:59 open.udf
drwxr-xr-x 1 baron users 2048 Aug 24 2003 optional
drwxr-xr-x 1 baron users 2048 Aug 24 2003 preferences
drwxr-xr-x 1 baron users 2048 Aug 24 2003 var
/boot $ cat ~/Desktop/desktop.udf >> ./bfile.udf
/boot $ cat ~/Desktop/desktop.udf >> ./open.udf
/boot $ cat ~/Desktop/desktop.udf >> ./home.udf
/bin/cat: write error: No space left on device
/boot $ cat ~/Desktop/desktop.udf >> ./open.udf
/boot $ ll
total 5146677
drwxr-xr-x 1 baron users 4096 Jul 5 13:08 apps
drwxr-xr-x 1 baron users 2048 Aug 24 2003 beos
-rws--sr-- 1 baron users 1621094848 Jul 5 14:16 bfile.udf
drwxr-xr-x 1 baron users 2048 Jan 19 19:20 biggg
drwxr-xr-x 1 baron users 2048 Aug 24 2003 demos
drwxr-xr-x 1 baron users 2048 Aug 24 2003 develop
drwxr-xr-x 1 baron users 5120 Jul 5 14:13 home
-rw-r--r-- 1 baron users 1343551488 Jul 5 13:59 home.udf
-r-S--Sr-- 1 baron users 2827151168 Jul 5 14:17 open.udf
drwxr-xr-x 1 baron users 2048 Aug 24 2003 optional
drwxr-xr-x 1 baron users 2048 Aug 24 2003 preferences
drwxr-xr-x 1 baron users 2048 Aug 24 2003 var
/boot $
----------------------------------------------------------------
Any ideas what the problem could be?
-Tyler
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