Re: [gentoo-user] genkernel assistance building initramfs

[Michael Scherer]

On Mon, 23 Apr 2012 13:26:57 -0500
Dale <rdalek1967@×××××.com> wrote:

> Michael Mol wrote:
> > So, my habit is to have /usr sit on top of LVM on top of mdraid. I
> > really don't want to get into the business of manually managing my
> > own initramfs, and udev >= 181 will eventually hit stable. I want my
> > systems ready before that.
> >
> > Now, having looked at the pertinent documentation, it looks like the
> > command I need to run is:
> >
> > genkernel --lvm --mdadm --disklabel initramfs
> >
> > and then add the initramfs to my grub setup.
> >
> > The trouble is, genkernel dies on me. I tried for some feedback in
> > #gentoo-chat, and DrEeevil gave me two clues:
> >
> > 13:34 <+DrEeevil> that shouldn't even be possible
> > 13:36 <+DrEeevil> mikemol: looks like static linking didn't on your
> > system
> >
> > I don't know where to take things from here. I'm hesitant to file a
> > bug on b.g.o, because the tail end of genkernel.log specifically
> > says not to file build errors as bug reports.
> >
> > So...any ideas? This is an amd64 mostly-stable system, and dracut is
> > still masked on amd64, which is why I'm trying to get genkernel
> > working.
> >
> > I've attached genkernel.log
> >
>
>
> If I read the -dev mailing list correctly, they plan to still support
> /usr without a init thingy.  After all the mess I went through, we may
> not need the init thingy after all.
>
> Go figure.
>
> Dale
>
> :-)  :-)
>

I wouldn't bet on that.

But there is a detailed gentoo howto to create an iniramfs
that does just that: load /usr.
http://wiki.gentoo.org/wiki/Early_Userspace_Mounting
It works. You only need tell your bootloader that now you
have an initramfs.
There's also a more general introduction
http://en.gentoo-wiki.com/wiki/Initramfs
for a lot of other options

michael