Sailaja Mada created CLOUDSTACK-1635:
----------------------------------------

             Summary: NPE while trying to set primary storage into  maintanance 
mode [ Primary storage which is added with scope as zone level]
                 Key: CLOUDSTACK-1635
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-1635
             Project: CloudStack
          Issue Type: Bug
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: Storage Controller
    Affects Versions: 4.2.0
            Reporter: Sailaja Mada
            Priority: Critical


Setup: Advanced Networking zone with xen  6.1 host 

Steps:

1. Add primary storage with zone wide scope.
2. Tried to set primary storage into  maintanance mode [ Primary storage which 
is added with scope as zone level]

Observation : It failed with NPE

Details :

2013-03-12 09:54:59,808 DEBUG [cloud.api.ApiServlet] (catalina-exec-15:null) 
===END===  10.144.7.13 -- GET  
command=enableStorageMaintenance&id=14cde048-318f-3033-84e9-f9f3e28e30c4&response=json&sessionkey=%2Fuam0d1OUFMISqQNmk4WqBWFnb8%3D&_=1363062380347
2013-03-12 09:54:59,811 DEBUG [cloud.async.AsyncJobManagerImpl] 
(Job-Executor-16:job-42) Executing 
org.apache.cloudstack.api.command.admin.storage.PreparePrimaryStorageForMaintenanceCmd
 for job-42
2013-03-12 09:54:59,819 ERROR [cloud.async.AsyncJobManagerImpl] 
(Job-Executor-16:job-42) Unexpected exception while executing 
org.apache.cloudstack.api.command.admin.storage.PreparePrimaryStorageForMaintenanceCmd
java.lang.NullPointerException
        at 
com.cloud.storage.StorageManagerImpl.preparePrimaryStorageForMaintenance(StorageManagerImpl.java:1396)
        at 
com.cloud.storage.StorageManagerImpl.preparePrimaryStorageForMaintenance(StorageManagerImpl.java:190)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at 
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:319)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
        at 
org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)
        at 
com.cloud.utils.db.TransactionContextBuilder.AroundAnyMethod(TransactionContextBuilder.java:40)
        at sun.reflect.GeneratedMethodAccessor27.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at 
org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
        at 
org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
        at 
org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
        at $Proxy115.preparePrimaryStorageForMaintenance(Unknown Source)
        at 
org.apache.cloudstack.api.command.admin.storage.PreparePrimaryStorageForMaintenanceCmd.execute(PreparePrimaryStorageForMaintenanceCmd.java:102)
        at com.cloud.api.ApiDispatcher.dispatch(ApiDispatcher.java:165)
        at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
        at 
org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
        at 
org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)
        at 
com.cloud.utils.db.TransactionContextBuilder.AroundAnyMethod(TransactionContextBuilder.java:46)
        at sun.reflect.GeneratedMethodAccessor27.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at 
org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
        at 
org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
        at 
org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)
        at 
com.cloud.async.AsyncJobManagerImpl$1.run(AsyncJobManagerImpl.java:437)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
        at java.util.concurrent.FutureTask.run(FutureTask.java:166)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.java:679)
2013-03-12 09:54:59,821 DEBUG [cloud.async.AsyncJobManagerImpl] 
(Job-Executor-16:job-42) Complete async job-42, jobStatus: 2, resultCode: 530, 
result: Error Code: 530 Error text: null
2013-03-12 09:55:02,819 DEBUG [cloud.api.ApiServlet] (catalina-exec-22:null) 
===START===  10.144.7.13 -- GET  
command=queryAsyncJobResult&jobId=366d840c-1586-43a1-8952-809bed7ea102&response=json&sessionkey=%2Fuam0d1OUFMISqQNmk4WqBWFnb8%3D&_=1363062383421
2013-03-12 09:55:02,831 DEBUG [cloud.async.AsyncJobManagerImpl] 
(catalina-exec-22:null) Async job-42 completed
2013-03-12 09:55:02,836 DEBUG [cloud.api.ApiServlet] (catalina-exec-22:null) 
===END===  10.144.7.13 -- GET  
command=queryAsyncJobResult&jobId=366d840c-1586-43a1-8952-809bed7ea102&response=json&sessionkey=%2Fuam0d1OUFMISqQNmk4WqBWFnb8%3D&_=1363062383421



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