> X-Authentication-Warning: lestat.nas.nasa.gov: Host localhost didn't use HELO protocol
> Cc: port-hp300@netbsd.org, gwr@netbsd.org
> Reply-To: Jason Thorpe <thorpej@nas.nasa.gov>
> From: Jason Thorpe <thorpej@nas.nasa.gov>
> Mime-Version: 1.0
> Content-Type: text/plain; charset="us-ascii"
> Date: Sat, 02 Dec 1995 00:51:00 -0800
> Sender: thorpej@nas.nasa.gov
> 
> On Fri, 1 Dec 1995 20:46:55 -0800 
>  gdonl@gv.ssi1.com (Don Lewis) wrote:
> 
>  > This problem does not seem to occur if all the filesystems are built
>  > with 4K blocks and 1K fragments.  The panic reliably occurs if I use
>  > 8K blocks and 1K fragments.
>  > 
>  > Looks like some sort of wierd filesystem bug to me.
> 
> Hi ... sorry I've been slow to reply to this ...
> 
> I think this might be similar to a problem Gordon Ross encountered on the 
> sun3 related to page size and the vfs clustering stuff.  Gordon?

Yes, I would guess this is the same problem.

The vfs_cluster code is kinda broken:  It appears to assume that
file_blocksize == page_size and that pagemove can move file blocks.
(And the code is just messy...)

I would do clustering differently in a VM-system rewrite...

Gordon