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Re: [Pkg-xen-devel] oldschool xen kernel on sid



Hello!

Low-res pictures are on <http://www.thomas.schwinge.homeip.net/tmp/xen/>.
Sorry, I don't have anything better at the moment, but I'll explain them
below.

On Tue, Oct 27, 2009 at 11:55:33PM +0100, Bastian Blank wrote:
> On Tue, Oct 27, 2009 at 11:15:13PM +0100, Thomas Schwinge wrote:
> > At this point, nothing is mounted on /root -- it's supposed to be an ext3
> > filesystem based on a LVM LV.  And the very strange thing is that
> > /dev/mapper/ does contain only one LV device, and that is the swap LV
> > (254,0), but not the root filessystem one.
> 
> Please provide the complete log and the bootloader config.

GRUB2:

menuentry "Xen 3.4, Debian GNU/Linux, Linux 2.6.31-1-xen-amd64" {
	insmod lvm
	insmod ext2
	set root=(vg0-boole-root)
	search --no-floppy --fs-uuid --set 54ccee0d-3455-43dc-af2e-e2bb3940776a
	multiboot /boot/xen-3.4-amd64.gz noreboot
	module /boot/vmlinuz-2.6.31-1-xen-amd64 root=/dev/mapper/vg0-boole--root ro
	module /boot/initrd.img-2.6.31-1-xen-amd64
}

03.jpg, 07.jpg: Dropped into the BusyBox shell.

08.jpg, 09.jpg: mount output (nothing on /root); ls -l /dev/mapper/ (only
control and vg0-boole--swap (254,0)); lvm vgchange -ay; ls -l
/dev/mapper/ (control, vg0-boole--data (254,2), vg0-boole--root (254,1),
vg0-boole--swap (254,0).

> >                                             If I manually run ``lvm
> > vgchange -ay'' the missing LVs appear, root (254,1) and data (254,2).
> > How would I manually resume the booting process from here?
> 
> mount $dev /root
> CTRL-D
> 
> should do it.

10.jpg: fstype vg0-boole-root (ext3); mount /dev/mapper/vg0-boole--root
/root (failed -- no such file or directory?!).

> > The exactly same arrangement boots without any problems with a non-Xen
> > kernel.  This is a up-to-date Debian testing, by the way.  Help?
> 
> I doubt that.

11.jpg: successful boot without Xen; here the device number are
different: vg0-boole--data (254,2), vg0-boole--root (254,0),
vg0-boole--swap (254,1) -- root has minor zero instead of one, and swap
vice versa?!


Regards,
 Thomas

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