Re: [Xen-devel] [patch]Make xend to take care of dead qemu-dm process

[shawn <xiaowei.hu@xxxxxxxxxx>]

Hi all,

I changed this patch ,put the domain into  crashed domains,the called
refreshShutdown immediately.
Yes,this works fine now ,could do what specified on crashed in the
domain config file.

Resending this patch ,Please review it again!

Thanks Keir for your suggestion:)

Thanks all.

Regards,
xiaowei


--- ./tools/python/xen/xend/server/SrvServer.py.org     2008-05-21
13:53:08.000000000 +0800
+++ ./tools/python/xen/xend/server/SrvServer.py 2008-05-26
15:16:39.000000000 +0800
@@ -44,6 +44,7 @@
 import re
 import time
 import signal
+import os
 from threading import Thread
 
 from xen.web.httpserver import HttpServer, UnixHttpServer
@@ -148,14 +149,27 @@
 
             # Reaching this point means we can auto start domains
             try:
-                xenddomain().autostart_domains()
+                dom = xenddomain()
+                dom.autostart_domains()
             except Exception, e:
                 log.exception("Failed while autostarting domains")
 
             # loop to keep main thread alive until it receives a
SIGTERM
             self.running = True
             while self.running:
-                time.sleep(100000000)
+                # loop to destroy those hvm domain that whoes DM has
dead unexpectedly.
+                for item in dom.domains.values():
+                    if item.info.is_hvm():
+                        device_model_pid =
item.gatherDom(('image/device-model-pid', str))
+                        dm_stat_cmd = "ps -o stat --no-headers
-p"+device_model_pid
+                        dm_stat =
os.popen(dm_stat_cmd).readline().rstrip()
+                        if dm_stat == 'Z':
+                            log.warn("Devices Model for domain " +
str(item.domid) + "was killed unexpectedly")
+                            item.info['crashed'] = 1
+                            item.refreshShutdown(item.info)
+                        else:
+                            continue
+                time.sleep(30)
                 
             if self.reloadingConfig:
                 log.info("Restarting all XML-RPC and Xen-API
servers...")


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