[Xen-changelog] [xen-3.2-testing] Fix xm mem-max command to restore previous setting if

["Xen patchbot-3.2-testing" <patchbot-3.2-testing@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1204733699 0
# Node ID 94498a5d9ce01dcf37033bb8906096e6171fd6c8
# Parent  580029bd9dce8d3b9e544351b7a68b7fa7f12dc4
Fix xm mem-max command to restore previous setting if
xc.domain_setmaxmem fails.
Signed-off-by: Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>
xen-unstable changeset:   17125:450be98ef36b1af40ab381d8e0aac647012a60a2
xen-unstable date:        Tue Feb 26 15:02:26 2008 +0000
---
 tools/python/xen/xend/XendDomainInfo.py |    2 ++
 1 files changed, 2 insertions(+)

diff -r 580029bd9dce -r 94498a5d9ce0 tools/python/xen/xend/XendDomainInfo.py
--- a/tools/python/xen/xend/XendDomainInfo.py   Wed Mar 05 16:14:35 2008 +0000
+++ b/tools/python/xen/xend/XendDomainInfo.py   Wed Mar 05 16:14:59 2008 +0000
@@ -711,6 +711,7 @@ class XendDomainInfo:
         if limit <= 0:
             raise XendError('Invalid memory size')
 
+        maxmem_cur = self.get_memory_static_max()
         MiB = 1024 * 1024
         self._safe_set_memory('memory_static_max', limit * MiB)
 
@@ -719,6 +720,7 @@ class XendDomainInfo:
             try:
                 return xc.domain_setmaxmem(self.domid, maxmem)
             except Exception, ex:
+                self._safe_set_memory('memory_static_max', maxmem_cur)
                 raise XendError(str(ex))
         xen.xend.XendDomain.instance().managed_config_save(self)
 

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