Subject: Re: tmpfs as root file system
To: Chris Tribo <firstname.lastname@example.org>
From: Marcin Jessa <email@example.com>
Date: 02/21/2006 23:01:19
On Tue, 21 Feb 2006 16:38:11 -0500
Chris Tribo <firstname.lastname@example.org> 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.
> 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!