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Re: [Libguestfs] [PATCH v4 1/2] v2v: bootloaders: search grub config for all distributions

On Wed, Nov 02, 2016 at 09:50:20PM +0300, Pavel Butsykin wrote:
> On 02.11.2016 18:01, Richard W.M. Jones wrote:
> >From: Pavel Butsykin <pbutsykin virtuozzo com>
> >
> >This patch improves the search of grub config on EFI partition. This
> >means that the config will be found not only for rhel but also for
> >many other distributions.  Tests were performed on the following
> >distributions: centos, fedora, ubuntu, suse. In all cases, the config
> >path was /boot/efi/EFI/*distname*/grub.cfg
> >
> >The main purpose of the patch is to improve support for converting of
> >vm with UEFI for most distributions. Unfortunately this patch does not
> >solve the problem for all distributions, for example Debian does not
> >store grub config on the EFI partition, therefore for such
> >distributions another solution is necessary.
> >
> >Signed-off-by: Pavel Butsykin <pbutsykin virtuozzo com>
> >Signed-off-by: Richard W.M. Jones <rjones redhat com>
> >---
> Thank you for the help!
> I found an interesting post on your blog(
> https://rwmj.wordpress.com/tag/virt-efivars/ )
> about editing NVRAM. I think it's a good idea to make the
> possibility of NVRAM settings. It will improve conversion for EFI
> vm's and solve the problem for some distributions which don't
> support fallback
> (for example it's ubuntu and debian). Are there any plans to add this
> functionality to libguestfs?

If we got suitable patches then yes.  There are a couple of problems
though.  Firstly there's no simple implementation.  Secondly it might
not help virt-v2v even if implemented, since you cannot necessarily
pull the EFI vars from the source hypervisor (eg if it's VMware I'm
not aware of any method).


Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-builder quickly builds VMs from scratch

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