Re: Unable to write files greater than 1GB to udf-filesystem after kernel update (Sarge)
> > beginning with kernel-image-2.6.8-3-k7_2.6.8-16sarge5, I am no longer able to
> > write files to a DVD-RAM with udf-filesystem which are bigger than 1G. When
> > copying files greater than the mentioned size to the DVD-RAM, I get the error
> > message "File size exceeded". Copying smaller files works.
> > This problem also exists after upgrading to the latest kernel-image
> > 2.6.8-15sarge6.
> > When reverting back to the old kernel (kernel-image-2.6.8-3-k7_2.6.8-16sarge4)
> > or when formatting the medium with an ext2-filesystem, the problem
> > disappears, so this problem seems to be related to the udf-filesystem.
> > I did a Google search and found a posting with the same problem which seems to
> > affect Debian Etch testing only:
> > http://groups.google.com/group/linux.debian.user/browse_thread/thread/1eab67989a25fe8a/b3c075459da58131?lnk=gst&q=file+size+exceeded+1GB
> > I did not find anything related in the Debian Bug-tracker.
> > Am I missing a parameter or option to be able to write files greater than 1GB
> > to an udf-filesystem after upgrading?
> hey Omer,
> Upstream's solution to handle this security problem was to
> disable extents > 1G in UDF, so that is what we backported for a
> security update.
> Does the UDF filesystem only allow 1 extent per file? If not, is it
> possible to change the patch to actually limit extent sizes instead of
> the overall size of the file?
Yes it is possible. It just requires non-trivial work (rewriting
several places in UDF code). Anyone is welcome to do this. Eric Sandeen
from RedHat may be working on it (or me if I find time but it won't be
Jan Kara <email@example.com>
SuSE CR Labs