GNU bug report logs - #32944
Optionally copy kernel to specified directory

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Ricardo Wurmus <ricardo.wurmus <at> mdc-berlin.de>
To: <bug-guix <at> gnu.org>
Subject: Optionally copy kernel to specified directory
Date: Fri, 5 Oct 2018 15:50:24 +0200

Currently, the kernel and the initrd are stored somewhere in /gnu/store
and the GRUB configuration is generated to point to these things
directly.  This means that the disk containing /gnu/store must be
readable in GRUB.  This is not always the case.

Consider the case where /gnu/store should be hosted on an external
storage array connected redundantly via HBAs.  The disks might not be
visible in GRUB and only become available once Linux has booted.

This could be made to work by adding an option to “guix system
reconfigure” to copy all things that are needed for starting Linux
(e.g. the kernel, the initrd, …), and then mount /gnu/store from the
specified location once Linux is up.

--
Ricardo

Message #8 received at 32944 <at> debbugs.gnu.org (full text, mbox):

From: Simon Tournier <zimon.toutoune <at> gmail.com>
To: Ricardo Wurmus <ricardo.wurmus <at> mdc-berlin.de>
Cc: 32944 <at> debbugs.gnu.org
Subject: Re: bug#32944: Optionally copy kernel to specified directory
Date: Mon, 16 Jun 2025 12:10:00 +0200

Hi Ricardo,

What is the status of this old bug

    https://issues.guix.gnu.org/issue/32944

?

On Fri, 05 Oct 2018 at 15:50, Ricardo Wurmus <ricardo.wurmus <at> mdc-berlin.de> wrote:
> Currently, the kernel and the initrd are stored somewhere in /gnu/store
> and the GRUB configuration is generated to point to these things
> directly.  This means that the disk containing /gnu/store must be
> readable in GRUB.  This is not always the case.
>
> Consider the case where /gnu/store should be hosted on an external
> storage array connected redundantly via HBAs.  The disks might not be
> visible in GRUB and only become available once Linux has booted.
>
> This could be made to work by adding an option to “guix system
> reconfigure” to copy all things that are needed for starting Linux
> (e.g. the kernel, the initrd, …), and then mount /gnu/store from the
> specified location once Linux is up.

It contains this only unique message from 2018.

Cheers,
simon

PS: Hum, maybe Ricardo is AFK these days… :-D

Message #11 received at 32944 <at> debbugs.gnu.org (full text, mbox):

From: Ricardo Wurmus <ricardo.wurmus <at> mdc-berlin.de>
To: Simon Tournier <zimon.toutoune <at> gmail.com>
Cc: 32944 <at> debbugs.gnu.org
Subject: Re: [ext] Re: bug#32944: Optionally copy kernel to specified directory
Date: Thu, 19 Jun 2025 09:35:58 +0200

Hi Simon,

> What is the status of this old bug
>
>     https://issues.guix.gnu.org/issue/32944

Unchanged.

> Currently, the kernel and the initrd are stored somewhere in 
> /gnu/store
> and the GRUB configuration is generated to point to these things
> directly.  This means that the disk containing /gnu/store must 
> be
> readable in GRUB.  This is not always the case.
>
> Consider the case where /gnu/store should be hosted on an 
> external
> storage array connected redundantly via HBAs.  The disks might 
> not be
> visible in GRUB and only become available once Linux has booted.
>
> This could be made to work by adding an option to “guix system
> reconfigure” to copy all things that are needed for starting 
> Linux
> (e.g. the kernel, the initrd, …), and then mount /gnu/store from 
> the
> specified location once Linux is up.

This is still a deployment that Guix does not support.  Arguably, 
it should.

-- 
Ricardo

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