Remove core files after setting up system dataset

Ticket:	NAS-109454
(cherry picked from commit 325ecdb7)

src/middlewared/middlewared/plugins/sysdataset.py

@@ -8,6 +8,7 @@ import errno
 import os
 import shutil
 import uuid
+from pathlib import Path
 
 SYSDATASET_PATH = '/var/db/system'
 
@@ -289,6 +290,14 @@ class SystemDatasetService(ConfigService):
                     await run('sysctl', f"kern.corefile='{corepath}/%N.core'")
                 os.chmod(corepath, 0o775)
 
+                if await self.middleware.call('keyvalue.get', 'run_migration', False):
+                    try:
+                        cores = Path(corepath)
+                        for corefile in cores.iterdir():
+                            corefile.unlink()
+                    except Exception:
+                        self.logger.warning("Failed to clear old core files.", exc_info=True)
+
             await self.__nfsv4link(config)
             await self.middleware.call('smb.setup_directories')
             # The following should be backgrounded since they may be quite

src/middlewared/middlewared/plugins/system.py

 import asyncio
 from datetime import datetime, date, timezone
-from pathlib import Path
 from middlewared.event import EventSource
 from middlewared.i18n import set_language
 from middlewared.logger import CrashReporting
@@ -1681,12 +1680,5 @@ async def setup(middleware):
     CRASH_DIR = '/data/crash'
     os.makedirs(CRASH_DIR, exist_ok=True)
     os.chmod(CRASH_DIR, 0o775)
-    if await middleware.call('keyvalue.get', 'run_migration', False):
-        try:
-            cores = Path("/var/db/system/cores")
-            for corefile in cores.iterdir():
-                corefile.unlink()
-        except Exception:
-            self.logger.warning("Failed to clear old core files.", exc_info=True)
 
     middleware.register_hook('system.post_license_update', hook_license_update, sync=False)