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https://issues.apache.org/jira/browse/CLOUDSTACK-4011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13731338#comment-13731338
 ] 

ASF subversion and git services commented on CLOUDSTACK-4011:
-------------------------------------------------------------

Commit 016fe3ecb8efe5c5b441cd531d6e32159c571ef3 in branch refs/heads/4.2 from 
[~mlsorensen]
[ https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;h=016fe3e ]

Summary: Quiet erroneous stopVM failures on kvm

Detail: Cloudstack tries to stop VMs all the time, for all sorts of reasons,
but usually just to get into a known state.  Libvirt throws an exception of
'Domain not found' when attempting to stop a VM that doesn't exist. This causes
problems for troubleshooting real issues. Domain not found should equate
to success if trying to stop.

BUG-ID: CLOUDSTACK-4011
Bugfix-for: 4.2
Signed-off-by: Marcus Sorensen <mar...@betterservers.com> 1375825281 -0600

                
> not able to deployVM on kvm due to checking and stopping dom as part of does 
> dom already exists check
> -----------------------------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-4011
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-4011
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>          Components: KVM, Storage Controller
>    Affects Versions: 4.2.0
>         Environment: KVM, advance zone
> ZWPS
>            Reporter: Rajesh Battala
>            Assignee: Rajesh Battala
>            Priority: Blocker
>             Fix For: 4.2.0
>
>
> While deploying the instance in KVM,
> its checking whether the dom is already present or not by searching the dom 
> and trying to stop it. 
> As the dom is not present, its throwing the below exception and deploy is 
> failing. 
> I guess it good to check if the dom is present by lookup and continue further 
> instead of stopping a dom which is not present which will definitely throw an 
> exception and deploy fails
> 2013-08-01 17:34:32,819 DEBUG [cloud.agent.Agent] 
> (agentRequest-Handler-1:null) Processing command: 
> com.cloud.agent.api.StopCommand
> 2013-08-01 17:34:32,822 DEBUG [kvm.resource.LibvirtConnection] 
> (agentRequest-Handler-1:null) can't find connection: KVM, for vm: i-2-9-VM, 
> continue
> 2013-08-01 17:34:32,825 DEBUG [kvm.resource.LibvirtConnection] 
> (agentRequest-Handler-1:null) can't find connection: LXC, for vm: i-2-9-VM, 
> continue
> 2013-08-01 17:34:32,825 DEBUG [kvm.resource.LibvirtConnection] 
> (agentRequest-Handler-1:null) can't find which hypervisor the vm used , then 
> use the default hypervisor
> 2013-08-01 17:34:32,828 DEBUG [kvm.resource.LibvirtComputingResource] 
> (agentRequest-Handler-1:null) Failed to get dom xml: 
> org.libvirt.LibvirtException: Domain not found: no domain with matching name 
> 'i-2-9-VM'
> 2013-08-01 17:34:32,830 DEBUG [kvm.resource.LibvirtComputingResource] 
> (agentRequest-Handler-1:null) Failed to get dom xml: 
> org.libvirt.LibvirtException: Domain not found: no domain with matching name 
> 'i-2-9-VM'
> 2013-08-01 17:34:32,832 DEBUG [kvm.resource.LibvirtComputingResource] 
> (agentRequest-Handler-1:null) Failed to get dom xml: 
> org.libvirt.LibvirtException: Domain not found: no domain with matching name 
> 'i-2-9-VM'
> 2013-08-01 17:34:32,832 DEBUG [kvm.resource.LibvirtComputingResource] 
> (agentRequest-Handler-1:null) Executing: 
> /usr/share/cloudstack-common/scripts/vm/network/security_group.py 
> destroy_network_rules_for_vm --vmname i-2-9-VM
> 2013-08-01 17:34:33,042 DEBUG [kvm.resource.LibvirtComputingResource] 
> (agentRequest-Handler-1:null) Execution is successful.
> 2013-08-01 17:34:33,043 DEBUG [kvm.resource.LibvirtComputingResource] 
> (agentRequest-Handler-1:null) Try to stop the vm at first
> 2013-08-01 17:34:33,046 DEBUG [kvm.resource.LibvirtComputingResource] 
> (agentRequest-Handler-1:null) Failed to stop VM :i-2-9-VM :
> org.libvirt.LibvirtException: Domain not found: no domain with matching name 
> 'i-2-9-VM'
>         at org.libvirt.ErrorHandler.processError(Unknown Source)
>         at org.libvirt.Connect.processError(Unknown Source)
>         at org.libvirt.Connect.domainLookupByName(Unknown Source)
>         at 
> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.stopVM(LibvirtComputingResource.java:4207)
>         at 
> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.stopVM(LibvirtComputingResource.java:4159)
>         at 
> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.execute(LibvirtComputingResource.java:3036)
>         at 
> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.executeRequest(LibvirtComputingResource.java:1152)
>         at com.cloud.agent.Agent.processRequest(Agent.java:525)
>         at com.cloud.agent.Agent$AgentRequestHandler.doTask(Agent.java:852)
>         at com.cloud.utils.nio.Task.run(Task.java:83)
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
>         at java.lang.Thread.run(Thread.java:679)
> 2013-08-01 17:34:33,048 DEBUG [kvm.resource.LibvirtComputingResource] 
> (agentRequest-Handler-1:null) Failed to get vm status:Domain not found: no 
> domain with matching name 'i-2-9-VM'
> 2013-08-01 17:34:33,050 DEBUG [kvm.resource.LibvirtComputingResource] 
> (agentRequest-Handler-1:null) Failed to get vm status:Domain not found: no 
> domain with matching name 'i-2-9-VM'
> 2013-08-01 17:34:33,052 DEBUG [kvm.resource.LibvirtComputingResource] 
> (agentRequest-Handler-1:null) Failed to get vm status:Domain not found: no 
> domain with matching name 'i-2-9-VM'
> 2013-08-01 17:34:33,052 DEBUG [kvm.resource.LibvirtComputingResource] 
> (agentRequest-Handler-1:null) Can't get vm's status, assume it's dead already

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