On Tue, 21 Feb 2006 16:38:11 -0500
Chris Tribo <ctribo@dtcc.edu> wrote:

> 
> MFS != MD   /* MFS and TMPFS is not MD */
> 
> You could however mount tmpfs file systems from the memory disk root  
> file system that you stuff inside the kernel image, or maybe roll  
> your own /etc/rc to populate a tmpfs file system. 

This did not work last I tried. 

>I've done that with mfs file systems 

AFAIK MFS is a different beast.
I think you're confusing memory device with MFS.
MD can indeed be mounted as rootfs extracted from the kernel like this:
/dev/md0a   /     ffs     rw,noatime 0 0

I don't think you can do something like this for rootfs, but I can be wrong:
swap           /           mfs     rw


>on a firewall box before I learned to effectively  
> use crunchgen.

I dont see how crunching binaries is related to rootfs type.
And please stop top posting.

Cheers,
Marcin.

> On Feb 21, 2006, at 4:27 PM, Zafer Aydogan wrote:
> 
> > hello list,
> >
> > is it possible to use tmpfs as a root file system, the way like the
> > INSTALL Kernel does it with MFS ?
> >
> > If, yes how should I enable it ?
> >
> > MFS uses this in the INSTALL Kernel:
> >
> > # Enable the hooks used for initializing the root memory-disk.
> > options 	MEMORY_DISK_HOOKS
> > options 	MEMORY_DISK_IS_ROOT	# force root on memory disk
> > options 	MEMORY_DISK_SERVER=0	# no userspace memory disk support
> > options 	MEMORY_DISK_ROOT_SIZE=10000	# size of memory disk, in blocks
> >
> > Or, if that's not possible, can I use MFS and then dump to tmpfs ?
> >
> > # Kernel root file system and dump configuration.
> > config		netbsd	root on ? type ?
> > #config		netbsd	root on sd0a type ffs tmpfs
> > #config		netbsd	root on ? type nfs
> >
> > Thanks, Zafer.
> >
> > !DSPAM:43fb85db89361096661550!
> >
> >
> >
>