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[Xen-devel] [PATCH 11/11] tools/xend: move assert to exception block



The two assert in restore trigger sometimes after hundreds of
migrations. If they trigger the destination host will not destroy the
newly created, yet empty guest. After a second migration attempt to this
host there will be two guets with the same name and uuid. This situation
is poorly handled by the xm tools.
With this change the empty guest will be destroyed.

Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>
Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---
 tools/python/xen/xend/XendCheckpoint.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/python/xen/xend/XendCheckpoint.py 
b/tools/python/xen/xend/XendCheckpoint.py
index a433ffa..b8caf02 100644
--- a/tools/python/xen/xend/XendCheckpoint.py
+++ b/tools/python/xen/xend/XendCheckpoint.py
@@ -249,9 +249,6 @@ def restore(xd, fd, dominfo = None, paused = False, 
relocating = False):
     store_port   = dominfo.getStorePort()
     console_port = dominfo.getConsolePort()
 
-    assert store_port
-    assert console_port
-
     # if hvm, pass mem size to calculate the store_mfn
     if is_hvm:
         apic = int(dominfo.info['platform'].get('apic', 0))
@@ -263,6 +260,9 @@ def restore(xd, fd, dominfo = None, paused = False, 
relocating = False):
         pae  = 0
 
     try:
+        assert store_port
+        assert console_port
+
         restore_image = image.create(dominfo, dominfo.info)
         memory = restore_image.getRequiredAvailableMemory(
             dominfo.info['memory_dynamic_max'] / 1024)

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