Re: Failed to netboot NBD rootfs

[Wouter Verhelst <w@uter.be>]

On Thu, Feb 06, 2025 at 04:07:28PM +0100, Thomas Pellegatta wrote:
>    Hello,
> 
>    I can’t find any solution on the internet so I’m reaching you by email.
> 
>    I’m trying to achieve netboot on one of my devices. To do so I made a
>    dedicated image:
> 
>    truncate -s 10G debian-nbd.img
> 
>    mkfs.btrfs debian-nbd.img
> 
>    sudo mount -t btrfs -o loop debian-nbd.img /mnt
> 
>    rsync -avPAHXxe path/to/existing/debian/rootfs /mnt
> 
>    sudo umount /mnt
> 
>    Then I created a NBD conf /etc/nbd-server/conf.d/diskless.conf:
> 
>    [node]
> 
>      exportname = /path/to/debian-nbd.img
> 
>    And I edited /etc/nbd-server/config:
> 
>    [generic]
> 
>      user = root
> 
>      group = root

This misses an includedir option:

includedir = /etc/nbd-server/conf.d

Without that option, your "diskless.conf" is ignored, and thn obviously
the export is unknown.

Also, using the root user is the default, but I don't recommend it. It's
safer to use a non-root user and to grant read/write permissions for the
file you're trying to export.

-- 
     w@uter.{be,co.za}
wouter@{grep.be,fosdem.org,debian.org}

I will have a Tin-Actinium-Potassium mixture, thanks.