On Thu, Jun 13, 2002 at 07:09:40AM +0200, Peter B wrote:
  | Luke Mewburn wrote:
  | >On Thu, Jun 13, 2002 at 06:46:53AM +0200, Peter B wrote:
  | >  | 
  | >  |   Is there anyway to mount a freebsd ufs (normal) filesystem under
  | >  |   NetBSD/sparc..?
  | >
  | >FreeBSD/sparc or FreeBSD/intel ?
  | >
  | >The former should "Just Work" once you add the appropriate offsets
  | >into a NetBSD disklabel.
  | 
  | What's the formula for calculating those offsets..?
  | And then there's the issue of "PC type partitions". (/dev/da0s1 s2 s3 s4)

They're physical sectors from the start of the disk on a sparc.
The NetBSD/i386 tool `mbrlabel' might help here.


  | >The latter requires a kernel compiled with "FFS_EI" option to be
  | >able to mount it (i386 is litte endian, sparc is big endian).
  | 
  | So NetBSD-152/sparc (sun4c) would with a disklabel command + kernel
  | recompiled with FFS_EI option be able to mount a FreeBSD4.5/i386 slice ..?

Should do.  There were a bunch of ffs fixes pulled up to the
NetBSD-1-5 branch a while ago that might make that particular
functionality (compatibility with FreeBSD) more stable, but I
can't recall if that was before or after NetBSD 1.5.2 was released.

You could always try a NetBSD 1.6 beta release for the sparc available at:
	ftp://releng.netbsd.org/pub/NetBSD-daily/200206110000/sparc/

(there is a minor issue with the miniroot install with that which
should be fixed when the 200206130000 release is built tomorrow).


  | Btw, is 'mt status' supposed to return fileposition 0 at all times?, that 
  | feature works in freebsd.. 

It's been improved in a more recent release that NetBSD 1.5.2.
1.6 BETAs should be much better.

Luke.

-- 
Luke Mewburn  <lukem@wasabisystems.com>  http://www.wasabisystems.com
Luke Mewburn     <lukem@netbsd.org>      http://www.netbsd.org
Wasabi Systems - NetBSD hackers for hire
NetBSD - the world's most portable UNIX-like operating system