[Libguestfs] [PATCH] appliance: Copy /etc/machine-id from host system into the appliance.

[Fabian Deutsch]

systemd will generate a new machine-id if /etc/machine-id is empty,
that's how anaconda does it, maybe it's also an option for guestfish.

- fabian

On Tue, Mar 29, 2016 at 1:14 PM, Richard W.M. Jones <rjones at redhat.com> wrote:
> Currently when the appliance is booted we see warning messages like
> these ones:
>
> [/usr/lib/tmpfiles.d/systemd.conf:26] Failed to replace specifiers: /run/log/journal/%m
> [/usr/lib/tmpfiles.d/systemd.conf:28] Failed to replace specifiers: /run/log/journal/%m
> [/usr/lib/tmpfiles.d/systemd.conf:29] Failed to replace specifiers: /run/log/journal/%m
>
> They are apparently harmless, but are caused because /etc/machine-id
> does not exist inside the appliance, and so %m cannot be substituted
> by systemd-tmpfiles.
>
> The solution to this is to provide /etc/machine-id.  However this is
> not so simple: either we could get supermin to generate this,
> requiring an ugly systemd-specific hack to supermin, or we could
> generate it in the /init script, which just slows the init script down
> for no real reason.
>
> Since the content of /etc/machine-id doesn't really matter for a
> throwaway appliance so long as it has the right format, this commit
> copies the host file into the appliance.
> ---
>  appliance/hostfiles.in | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/appliance/hostfiles.in b/appliance/hostfiles.in
> index 8ff53b5..6c581bd 100644
> --- a/appliance/hostfiles.in
> +++ b/appliance/hostfiles.in
> @@ -13,5 +13,6 @@ dnl   SUSE=1       For OpenSUSE.
>  dnl   FRUGALWARE=1 For Frugalware.
>  dnl   MAGEIA=1     For Mageia.
>
> +/etc/machine-id
>  /lib/lsb/*
>  /usr/share/augeas/lenses/*.aug
> --
> 2.7.4
>
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-- 
Fabian Deutsch <fdeutsch at redhat.com>
RHEV Hypervisor
Red Hat