On Wed, Jan 07, 2004 at 12:14:02PM +1100, matthew green wrote:
>    
>    > 
>    > These patches will also fix the problems discussed in these prs:
>    >   kern/21404 "new kernel breaks file system for old kernels"
>    >   kern/21283 "current FFS (not v2) incompatible with older NetBSD releases"
>    
>    I though I had closed kern/21283 , I daily use a ZIP floppy between a current
>    i386 and 1.6.1 alpha without problems since I commited some changes for
>    this ...
> 
> certainly, the bug is still there.  only last week i was semi-screwed by
> this problem - booting a -current kernel on a year old -current system.

So before the UFS2 integration, right ?

> when trying to boot the old kernel again fsck was complaining about the
> filesystem being broken, and needed -b 32 to fix it...

Well, I'm not sure I really tried to fix fsck. My primary concern was that
and older kernel wouldn't even be able to mount the filesystem any more,
so in your senario, the old kernel wouldn't even have allowed you to
run fsck, as it would not have mounted /.

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
     NetBSD: 24 ans d'experience feront toujours la difference
--