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Re: none

From: Tomáš Čech
Subject: Re: none
Date: Tue, 10 Mar 2015 12:59:30 +0100
User-agent: Mutt/1.5.21 (2011-07-01)

On Fri, Dec 05, 2014 at 09:35:42AM +0100, Tomas Cech wrote:
At Fri, 05 Dec 2014 00:04:23 +0100,
Ludovic Courtès wrote:

Tomas Cech <address@hidden> skribis:

> I tried to install Guix as alternative OS to my Gentoo and openSUSE
> installations to give a try. I tried unsupported scenario -
> installation on LVM volume and separate /boot partition until I was
> told it is unsupported. Separate boot wasn't hard as I had to just
> copy generated files so they are loaded.

OK, but there’s still an open bug on that topic.  :-)

Good, I'll give a try again.

> 1] if you set device to partition (and not to disk) in your 
grub-configuration like this:
>  (bootloader (grub-configuration
>                (device "/dev/sda4")))

Why would you want to use a partition and not a disk?  I didn’t know
this was even possible.

Because this way I can separate Grub managed by Guix and Grub from my
Gentoo. As I'm playing with that on my notebook I need for work, this
way can reduce risks.

I'm not sure how Guix installer can manipulate with grub.cfg and I'd
like to always have some working system...

> `guix system init' will fail on grub installation. By default Grub
> tries to fit in the beginning of partition and fails if it can't fit
> in. I asked about this behaviour on Grub mailing list and it seems
> that there are two options:
>   a] add `--force' to command line and use block list for keeping information 
about position of Grub's core.img
>   b] use filesystem which allows embedding - BtrFS or ZFS
> I verified both options (a] and then b] with BtrFS) and it no longer fails.
> But,
> ad a] - I don't feel safe passing `--force' to grub-install every
> time. So if installation fails on this point and you'd like to use
> your FS anyway, you can pass `--no-grub' to `guix system init' and
> then rung grub-install manually.
> ad b] - I don't feel safe using still experimental BtrFS.

OK.  I think the conclusion for Guix is to leave the defaults unchanged.
Perhaps we could add a ‘force?’ field to the ‘grub-configuration’ data
type to allow those who know what they doing to get the effect of
‘--force’.  WDYT?

After giving some more thoughts and after more experience with the process I
do agree that exposing `--force' parameter into grub-configuration is good idea.

I'm filing bug for that.

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