[aklug] Re: stick together two partitions to get a bootable image

One way of doing this without a bunch of fuss is to use network block
devices. I've had good luck doing this with iSCSI, ATAoE, and NBD with
partition support.

You can also get loopback block devices to support partitions if you're
cheeky.

On Wed, Jan 2, 2013 at 12:00 PM, Christopher Howard <
christopher.howard@frigidcode.com> wrote:

> On 01/01/2013 07:25 PM, Christopher Howard wrote:
> > Hey guys. I created raw (block-level) copies of two partitions of a
> > server (the boot partition and the root partition). I want to run them
> > inside qemu, for purposes of testing, experimentation, and so forth.
> > However, I think that I need to stick the partitions together first into
> > a single bootable disk image. What would be the easiest way to go about
> > that?
> >
>
> Progress report: I went with the most obvious approach: I created an new
> raw image file of necessary size (actually slightly larger), then I
> booted up qemu with a rescue cd, and the three images:
>
> qemu-kvm -m 256 -cdrom bootcd.iso -hda wizard.img -hdb
> wizard-boot-partition-20130101.img -hdd wizard-root-partition-20130101.img
>
> Once inside the rescue cd environment, I partitioned sda to have two
> partitions the appropriate size. Then I used dd to block level copy the
> contents of sdb into sda1 and sdc into sda2. Then I installed grub onto
> sda.
>
> Seems to have worked okay. Though, I have run into a few problems
> because my kernel/initramfs configuration was for a different kind of
> system setup than the one of have created in qemu. So I am in the
> process of rebuilding the kernel and the initramfs.
>
> --
> frigidcode.com
>
>

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Received on Wed Jan 2 13:55:49 2013