:On Thu, Jul 27, 2006 at 02:21:59PM +0200, Joerg Sonnenberger wrote: :> On Thu, Jul 27, 2006 at 08:39:37AM +0200, Andreas Klemm wrote: :> > Later I wanted to mount the dfly filesystems on FreeBSD 6.1, :> > of course still my main Unix ;-) But it wasn't possible. :> :> DragonFly disklabels allow 16 entries by default, FreeBSD still limits :> it to 8. That's why you can't read it directly. :> : :Hmm, for the sake of compatibility, wouldn't it have been an option, :to add this extra bit to the end of the struct ? : : Andreas /// : :-- :Andreas Klemm - Powered by FreeBSD 6
The thing to note here is that FreeBSD had to make room for the UFS1+UFS2 boot code, so it moved the boot code back to the point where it abuts the 8-partition-sized disklabel. So at least insofar as FreeBSD goes, the partition table cannot be expanded to 16 partitions with UFS1+UFS2 boot code. I'm guessing that it *could* be expanded to 16 partitions with UFS1 only or UFS2 only boot code (assuming the boot code were relocated back to where it was originally in FreeBSD-4/5 times, before UFS2 came along). With regards to simply recognizing a DragonFly partition... yes, that would be easy to do. Since FreeBSD is now devfs-based, the bit we had to steal to support 16 partitions in /dev isn't an issue. I dunno if geom changes the equation any. Personally I have always felt that 8 partitions is restrictive. My main home server has 10 and the main DragonFly box has 11. There is another solution for FreeBSD folks, however. You *DO* have four slices to play with. You can put a disklabel with 8 partitions in it on each one (for 32 total). It isn't as convenient, but it does work. -Matt Matthew Dillon <[EMAIL PROTECTED]> _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"