From ae93ed0f0d4e7be0a286d1fca86446318c0c6ffb Mon Sep 17 00:00:00 2001
From: Markus Kowalewski <markus.kowalewski@fysik.su.se>
Date: Tue, 6 Nov 2018 13:04:42 +0100
Subject: [PATCH] nixos/slurm: set slurmd KillMode to process

The default of systemd is to kill the
the whole cgroup of a service. For slurmd
this means that all running jobs get killed
as well whenever the configuration is updated (and activated).

To avoid this behaviour we set "KillMode=process"
to kill only slurmd on reload. This is how
slurm configures the systemd service.

See:
https://bugs.schedmd.com/show_bug.cgi?id=2095#c24
https://github.com/SchedMD/slurm/commit/508f866ea10e4c359d62d443279198082d587107
---
 nixos/modules/services/computing/slurm/slurm.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/nixos/modules/services/computing/slurm/slurm.nix b/nixos/modules/services/computing/slurm/slurm.nix
index cd481212db2d..cd1b6264fa92 100644
--- a/nixos/modules/services/computing/slurm/slurm.nix
+++ b/nixos/modules/services/computing/slurm/slurm.nix
@@ -303,6 +303,7 @@ in
 
       serviceConfig = {
         Type = "forking";
+        KillMode = "process";
         ExecStart = "${wrappedSlurm}/bin/slurmd";
         PIDFile = "/run/slurmd.pid";
         ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";