On May 23, 2013, at 8:38 AM, nesredin mohammedjemal Mahmud
<[email protected]> wrote:
> thank you Chris. Now I can see where the base problem is.
> I am using logical volumes that is why also its giving me hard time to
> install the grub.
>
> I have two Logical volumes: /dev/ubuntu/root and /dev/ubuntu/hvm.
> my objective is to install the bootaloader on hvm logical volume, then xen
> hvmloader will take care of it.
>
> # mkfs.ext3 /dev/ubuntu/hvm
> # mount /dev/ubuntu/hvm /mnt/target
> # mount -o loop myimage.ext3 /mnt/target-ext3
> # cp -a /mnt/target-ext3/* /mnt/target
> # grub-install --recheck --root-directory=/mnt/hvm /dev/ubuntu/hvm
> Invalid device `/dev/ubuntu/hvm'.
> Usage: /usr/sbin/grub-setup [OPTION...] DEVICE
> Try `/usr/sbin/grub-setup --help' or `/usr/sbin/grub-setup --usage' for more
> information.
>
> In fact, it has created me the grub directory in my logical volume; however,
> i guess there is problem with booatloader and partition table that I could
> not figure it out.
> # ls /mnt/target/
> boot lost+found
grub-install is probably looking for an MBR so it knows where to install its
various parts. But there is no MBR on the LV.
What I think you need to figure out for hvmloader, which I don't understand at
all, is that it uses a host LV as a block device for the VM. That is, it's an
LVM device for the host, but it's like a hard drive for the guest. If that's
correct, then inside of the guest you need to partition it with fdisk or
parted. Even if it's just one partition.
The fact you're referring to the device as /dev/ubuntu/root and /dev/ubuntu/hvm
sounds to me like you're running grub-install from the host, not from inside
the VM. From within the VM, you probably need to partition the block device as
if it were a regular hard drive, and then grub-install run on that block device
from within the VM will work. And then the VM BIOS with hvmloader will work.
But I'm guessing.
So unless someone on this list steps up with more xen specific knowledge about
hvmloader, I think you need to ask the question on a xen specific list.
Chris Murphy
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