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From "Sangeetha Hariharan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CLOUDSTACK-5736) KVM - Parallel Snapshots - Snapshots reported as being in "BackedUp" state even though a Nullpointer exception is seen during post processing of snapshot.
Date Fri, 03 Jan 2014 02:21:51 GMT
Sangeetha Hariharan created CLOUDSTACK-5736:
-----------------------------------------------

             Summary: KVM - Parallel Snapshots - Snapshots reported as being in "BackedUp"
state even though a Nullpointer exception is seen during post processing of  snapshot.
                 Key: CLOUDSTACK-5736
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-5736
             Project: CloudStack
          Issue Type: Bug
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: Management Server
    Affects Versions: 4.3.0
         Environment: Build from 4.3
            Reporter: Sangeetha Hariharan
            Priority: Critical
             Fix For: 4.3.0


Set up:
Advanced zone set up with 2 KVM (rhel 63) hosts.

Steps to reproduce the problem:

Deploy about 17 Vms in both hosts.
Start "Hourly" snapshot for all the ROOT volumes of these Vms.

Snapshots were reported as being in "BackedUp" state even though Nullpointer exception is
seen during post processing of  snapshot.

Following exception seen in management server logs:

014-01-02 19:57:53,560 DEBUG [c.c.s.s.SnapshotManagerImpl] (Job-Executor-166:ctx-c0f157b4
ctx-2654c4f7) post process snapshot failed
java.lang.NullPointerException
        at com.cloud.storage.snapshot.SnapshotManagerImpl.postCreateSnapshot(SnapshotManagerImpl.java:374)
        at com.cloud.storage.snapshot.SnapshotManagerImpl.takeSnapshot(SnapshotManagerImpl.java:954)
        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:601)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
        at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
        at $Proxy160.takeSnapshot(Unknown Source)
        at org.apache.cloudstack.storage.volume.VolumeServiceImpl.takeSnapshot(VolumeServiceImpl.java:1371)
        at com.cloud.storage.VolumeApiServiceImpl.orchestrateTakeVolumeSnapshot(VolumeApiServiceImpl.java:1723)
        at com.cloud.storage.VolumeApiServiceImpl.handleVmWorkJob(VolumeApiServiceImpl.java:2478)
        at sun.reflect.GeneratedMethodAccessor524.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
        at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
        at $Proxy195.handleVmWorkJob(Unknown Source)
        at com.cloud.vm.VmWorkJobDispatcher.runJob(VmWorkJobDispatcher.java:99)
        at org.apache.cloudstack.framework.jobs.impl.AsyncJobManagerImpl$5.runInContext(AsyncJobManagerImpl.java:522)
        at org.apache.cloudstack.managed.context.ManagedContextRunnable$1.run(ManagedContextRunnable.java:49)
        at org.apache.cloudstack.managed.context.impl.DefaultManagedContext$1.call(DefaultManagedContext.java:56)
        at org.apache.cloudstack.managed.context.impl.DefaultManagedContext.callWithContext(DefaultManagedContext.java:103)
        at org.apache.cloudstack.managed.context.impl.DefaultManagedContext.runWithContext(DefaultManagedContext.java:53)
        at org.apache.cloudstack.managed.context.ManagedContextRunnable.run(ManagedContextRunnable.java:46)
        at java.util.concurrent.Executors$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:722)


mysql> select id,volume_id,name,status from snapshots where status="BackedUp";
+----+-----------+-------------------------------------------------+----------+
| id | volume_id | name                                            | status   |
+----+-----------+-------------------------------------------------+----------+
|  4 |        22 | TestVM-tiny-host-0ps-0-6_ROOT-22_20140102234418 | BackedUp |
|  5 |        21 | TestVM-tiny-host-0ps-0-5_ROOT-21_20140102234418 | BackedUp |
|  6 |        20 | TestVM-tiny-host-0ps-0-4_ROOT-20_20140102234418 | BackedUp |
|  7 |        19 | TestVM-tiny-host-0ps-0-3_ROOT-19_20140102234418 | BackedUp |
|  8 |        18 | TestVM-tiny-host-0ps-0-2_ROOT-18_20140102234418 | BackedUp |
|  9 |        17 | TestVM-tiny-host-0ps-0-1_ROOT-17_20140102234418 | BackedUp |
| 10 |        16 | TestVM-tiny-host-0ps-0-0_ROOT-16_20140102234419 | BackedUp |
| 11 |        14 | TestVM-1_ROOT-14_20140102234419                 | BackedUp |
| 12 |        31 | TestVM-tiny-host-1ps-0-5_ROOT-31_20140102234419 | BackedUp |
| 16 |        27 | TestVM-tiny-host-1ps-0-1_ROOT-27_20140102234419 | BackedUp |
| 17 |        26 | TestVM-tiny-host-1ps-0-0_ROOT-26_20140102234419 | BackedUp |
| 18 |        25 | TestVM-tiny-host-0ps-0-9_ROOT-25_20140102234419 | BackedUp |
| 19 |        24 | TestVM-tiny-host-0ps-0-8_ROOT-24_20140102234419 | BackedUp |
+----+-----------+-------------------------------------------------+----------+
14 rows in set (0.00 sec)




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