harikrishna-patnala commented on a change in pull request #4643:
URL: https://github.com/apache/cloudstack/pull/4643#discussion_r572149114



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File path: server/src/main/java/com/cloud/vm/UserVmManagerImpl.java
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@@ -2730,6 +2730,19 @@ public UserVm updateVirtualMachine(long id, String 
displayName, String group, Bo
 
         if (isDynamicallyScalable == null) {
             isDynamicallyScalable = vm.isDynamicallyScalable();
+        } else {
+            if (isDynamicallyScalable == true) {
+                VMTemplateVO template = 
_templateDao.findByIdIncludingRemoved(vm.getTemplateId());
+                if (!template.isDynamicallyScalable()) {

Review comment:
       This is part of updateVirtualMachine API. If no option is provided then 
we dont have to evaluate the existing dynamic scalability of VM. 
   If user wants to update the value to "false", meaning VM not to be scalable 
this implies a kill switch. No need to evaluate the other values at service 
offering or template or global setting. CS can straight away update the VM.
   Only If user wants to update the value to "true" meaning VM to be scalable 
then CS needs to evaluate whether VM can be marked dynamically scalable based 
on other options at other granular levels.




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