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[Xen-devel] [PATCH] fix save or snapshot at kernel loading time with HVM vm

  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: "James (song wei)" <jsong@xxxxxxxxxx>
  • Date: Sun, 16 May 2010 22:57:23 -0700 (PDT)
  • Delivery-date: Sun, 16 May 2010 22:58:35 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

If doing save or snapshot at the time of kernel loading of a HVN vm,
event_channel haven't been initialized, so that make this saving with
xenstore. a string named "suspend" not "suspended"  will be sent to xend
from checkpoint thread. 
 But in the shutdown function with parameter "suspend" think this request
should shutdown this hvm guest, but obviously, this is not the expectation
of save or  snapshot. 

-James (Song Wei)

Signed-off-by:James (Song Wei) <jsong@xxxxxxxxxx>
diff -r baccadfd9418 tools/python/xen/xend/XendDomainInfo.py
--- a/tools/python/xen/xend/XendDomainInfo.py   Fri May 14 08:05:05 2010
+++ b/tools/python/xen/xend/XendDomainInfo.py   Mon May 17 13:56:15 2010
@@ -530,7 +530,7 @@
         self.storeDom("control/shutdown", reason)
         # HVM domain shuts itself down only if it has PV drivers
-        if self.info.is_hvm():
+        if self.info.is_hvm() and reason != 'suspend':
             hvm_pvdrv = xc.hvm_get_param(self.domid,
             hvm_s_state = xc.hvm_get_param(self.domid,
             if not hvm_pvdrv or hvm_s_state != 0:

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