From a0da8e8631f6b423b919dd774e0bb4e4449a2909 Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Tue, 8 Nov 2016 10:04:47 +0100
Subject: do not duplicate hostname on every reboot

---
 hook/hostname | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/hook/hostname b/hook/hostname
index 7b6e331..0ef6f6f 100644
--- a/hook/hostname
+++ b/hook/hostname
@@ -5,7 +5,10 @@ run_latehook() {
 
 	/usr/bin/systemd-machine-id-setup --root="${newroot}"
 
-	hostprefix="$(cat "${newroot}/etc/hostname")"
+	if [[ ! -s "${newroot}/etc/hostprefix" ]]; then
+		cp "${newroot}/etc/hostname" "${newroot}/etc/hostprefix"
+	fi
+	hostprefix="$(cat "${newroot}/etc/hostprefix")"
 
 	if [[ -n "${hostname}" ]]; then
 		msg ":: Setting hostname for main system to '${hostprefix}-${hostname}'..."
-- 
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