Re: grub on lvm2

[Hollis Blanchard]

On Sat, 2007-02-03 at 04:15 -0800, Mark Hannessen wrote:
> Hi list,
> 
> I have read on some websites that grub1.95 can boot from lvm
> So I thought I'd give it a try.
> I am quite new to grub2, so please forgive me my noobischness.
> This is what i did:
> 
> 1) I added /dev/hda to the physical extents ( pvcreate /dev/hda )
> 2) created a volume group on it ( vgcreate lvm2_core /dev/hda )
> 3) and created a boot partition on it ( lvcreate -L100M boot lvm2_core )
> 4) and wrote a partition on it: ( mkfs.reiserfs /dev/lvm2_core/boot )
> 5) mounted it on /boot and copied a bunch of grub .mod files to /boot/grub
> 6) created a config file called grub.cfg in /boot/grub/grub.cfg that 
> looks like this:
> 
> # begin grub.cfg
> set timeout=10
> set default=0
> 
> menuentry "My Linux Kernel on (lvm2_core-boot)" {
>     set root=(lvm2_core_boot)
>     linux /boot/vmlinuz root=/dev/ram
>     initrd /initrd
> 
> # end grub.cfg

I don't believe "set root" behaves properly. If that's the problem, you
will need to duplicate that value into both following lines.

> so far so good (i hope..)
> I now tried various combinations of grub-setup and grub-install but I 
> can't seem to get it right...

Perhaps you could be a little more specific.

> could anyone give me a syntax that should work here?
> or perhaps some documentation so I could figure it out myself..

All GRUB2 documentation is in the wiki: http://grub.enbug.org/

-Hollis