From 760b5385526c8ae9a725182859886908231129f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vin=C3=ADcius=20Ferr=C3=A3o?=
 <2031761+viniciusferrao@users.noreply.github.com>
Date: Thu, 23 Jul 2026 21:38:44 -0300
Subject: [PATCH] fix(postscripts): schedule the reboot with a systemd timer on
 SUSE

The reboot postscript backgrounds "(sleep 75; reboot) &". On SUSE that can
fire while the installer is still finishing, rebooting the node mid-install.
Use a systemd timer (systemd-run --on-active=90 /sbin/reboot) on SUSE, which
the installer teardown does not race; EL and Ubuntu keep the existing
backgrounded sleep.

Gated on SUSE and the presence of systemd-run, so no other platform changes.

Recovered from the unmerged lenovobuild branch (6785eb3a, 4fe2a72c, ac04f5ad;
net effect, consolidated).

Co-authored-by: Jarrod Johnson <10814490+jjohnson42@users.noreply.github.com>
---
 xCAT/postscripts/reboot | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/xCAT/postscripts/reboot b/xCAT/postscripts/reboot
index 6aace8cb7..018f2ccc4 100755
--- a/xCAT/postscripts/reboot
+++ b/xCAT/postscripts/reboot
@@ -3,7 +3,14 @@
 #(C)IBM Corp
 #
 
-(sleep 75;/sbin/reboot) &
+# On SUSE the backgrounded "sleep then reboot" can fire while the installer is
+# still finishing and reboot the node mid-install. Schedule the reboot with a
+# systemd timer there instead, which the installer teardown does not race.
+if grep NAME /etc/os-release | egrep '(SLE|SUSE)' > /dev/null && [ -x /usr/bin/systemd-run ]; then
+    systemd-run --on-active=90 --timer-property=AccuracySec=10s /sbin/reboot
+else
+    (sleep 75;/sbin/reboot) &
+fi
 
 exit 0