From 27d260a8d2ffda38732c4182e231a66521a71187 Mon Sep 17 00:00:00 2001
From: YoyoNow <jwsteam@nidido.de>
Date: Mon, 19 Oct 2026 10:14:10 +0200
Subject: [PATCH] Delete CRIU checkpoint on /bau delete /bau delete only
 removed the world folder. The checkpoint of the build server stayed in place,
 so the next start restored the old JVM state against a freshly copied world
 (superflat world, plugins inactive). Extract ServerStarter#checkpointDir and
 delete the checkpoint together with the world. Fixes #438

---
 .../src/de/steamwar/velocitycore/ServerStarter.java         | 6 +++++-
 .../src/de/steamwar/velocitycore/commands/BauCommand.java   | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/VelocityCore/src/de/steamwar/velocitycore/ServerStarter.java b/VelocityCore/src/de/steamwar/velocitycore/ServerStarter.java
index a4dc58fc..eab63787 100644
--- a/VelocityCore/src/de/steamwar/velocitycore/ServerStarter.java
+++ b/VelocityCore/src/de/steamwar/velocitycore/ServerStarter.java
@@ -303,7 +303,7 @@ public class ServerStarter {
                 worldSetup.run();
                 arguments.put("logPath", worldName);
 
-                File checkpointDir = new File("/tmp/" + System.getProperty("user.name") + ".checkpoints/" + directory.getName() + "/" + worldName);
+                File checkpointDir = checkpointDir(directory, worldName);
                 if (checkpoint) {
                     arguments.put("checkpoint", checkpointDir.getPath());
                 }
@@ -326,6 +326,10 @@ public class ServerStarter {
         }).schedule();
     }
 
+    public static File checkpointDir(File serverDirectory, String worldName) {
+        return new File("/tmp/" + System.getProperty("user.name") + ".checkpoints/" + serverDirectory.getName() + "/" + worldName);
+    }
+
     private void regularStart(String serverName, int port) {
         postStart(constructor.construct(serverName, port, node.startServer(
                 version, directory, worldDir, worldName, port, arguments.entrySet().stream().map(entry -> entry.getKey() + "=" + entry.getValue()).toArray(String[]::new)
diff --git a/VelocityCore/src/de/steamwar/velocitycore/commands/BauCommand.java b/VelocityCore/src/de/steamwar/velocitycore/commands/BauCommand.java
index 048e3125..d97e1e46 100644
--- a/VelocityCore/src/de/steamwar/velocitycore/commands/BauCommand.java
+++ b/VelocityCore/src/de/steamwar/velocitycore/commands/BauCommand.java
@@ -261,6 +261,7 @@ public class BauCommand extends SWCommand {
                 }
 
                 SubserverSystem.deleteFolder(VelocityCore.local, world);
+                SubserverSystem.deleteFolder(VelocityCore.local, ServerStarter.checkpointDir(version.getServerDirectory("Bau"), String.valueOf(sender.user().getId())).getPath());
                 sender.system("BAU_DELETE_DELETED");
             }).schedule();