On 3/14/07, Duane Cox <[EMAIL PROTECTED]> wrote:
>
> I'm not sure if this is for the LFS list or BLFS list.
> Since mounting udev as a tmpfs is not covered in LFS, I will assume it is
> appropriate to ask here.

Udev isn't a partition/filesystem/etc., just a set of utilities. I
think you mean /dev. This is mounted as a tmpfs by the udev bootscript
in /etc/rc.d/init.d/udev. I think you may be getting confused because
we just label the mount as tmpfs whereas most distros label it as
udev.

You can see this mount if you look at /proc/mounts. If you just
execute `mount', you won't see it. That's because `mount' shows the
mounted filesystems as listed in /etc/mtab. We don't record the /dev
mount in /etc/mtab so that you don't accidentally umount all your
devices.

> What process needs to be involved to mount udev as a tmpfs?
> I attempted to do this by changing the /etc/fstab, but I think a initrd
> needs to be involved.

Changing fstab won't help because the /dev mount happens as early as
possible, before the mountfs script starts processing fstab. This
needs to happen since if you don't have any devices in /dev, you can't
exactly start mounting filesystems (with the special exception of the
root device as specified to the kernel).

Are you having any specific problems?

--
Dan
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