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Large files written to DVD+RW with wrong filesize



   Hi,

   I've recently tried writing a [data] DVD+RW containing two large
files of over 2 GiB each. mkisofs generates an apparently correct ISO
9660 image -- I can mount it via loopback and read the files:

-rw-r--r--    1 hrm      media    2275737600 2004-05-16 23:41 Sea-of-Souls-1.mpeg
-rw-r--r--    1 hrm      media    2284208128 2004-05-16 14:13 Sea-of-Souls-2.mpeg

   When I write the image to a DVD+RW, both files appear on the DVD,
but their lengths are incorrect:

-r--r--r--    1 root     root     10813440 2004-05-16 23:41 Sea-of-Souls-1.mpeg
-r--r--r--    1 root     root      2506752 2004-05-16 14:13 Sea-of-Souls-2.mpeg

   The first file's length is 0x87000000 bytes short; the second is
0x88000000 bytes short. The readable parts of the files are apparently
correct, since they play fine with mplayer. They're simply too short.
The error is repeatable and consistent -- the files are always those
lengths.

   The machine in question is an Athlon64, with a 32-bit userspace. I
have observed this problem with both 32- and 64-bit kernels (2.6.6).

   I've submitted a bug report to Debian's BTS (#250312), but I've had
no reply yet, so I thought I'd try here, since the DVD+RW-tools author
suggests this list for support.

   Hugo.

PS. Please cc: me. I'm not subscribed to this list.

-- 
=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
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