I'm not sure why it would really need to know the size, but given that it wants it, can you open the file and lseek to the end of it?
- Dave Dykstra On Thu, Jan 23, 2003 at 09:17:04AM +0100, David Heremans wrote: > Hello, > > I'm looking for some assistance in modifying the rsync code > > Situation: I used to back-up some of my (unmounted NTFS) disk partitions > remotely using the following shells construct: > dd if=/dev/hda1 | gzip | ssh me@backupmachine 'cat > > /backup-dir/hda1-backup.gz' > > But now I want to use rsync for this, since transfering 10 gig takes a litle > to long if a file of a few kB has changed :-). I looked trough the archive > and found an old mail talking about the same problem, and a response > explaining the problem of writting to a block device (since rsync writes a > copy file and then moves it over the original). But the same mail also said > that reading from it should be trivial, so I set out trying to implement > this. > > So I created a '--read-block-file' option in options.c and avoided the > 'skipping non regular file' message in generator.c > By altering all this the receiver is ready to get the data, but in the flist > structure it still says that '/dev/hda1' is still a devicefile > and that the size is 0, and so the sender does send over zero bytes > > Now here is the problem : How do I get the size of partition in this > datastructure ? Or more generique, how would I handle this for /dev/fd0, > since you can insert 1.44MB disks or 720kB disks ? > > Anybody else tried to read blockdevices over rsync already ? > > After all, sending the data of a block device doesn't seem to be as trivial > as the archived mail sugested :-) > > David > > -- To unsubscribe or change options: http://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.tuxedo.org/~esr/faqs/smart-questions.html
