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From "Wido den Hollander (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CLOUDSTACK-2893) The Agent attempts to re-create a already existing Libvirt Storage pool when creating a volume
Date Fri, 07 Jun 2013 12:41:21 GMT
Wido den Hollander created CLOUDSTACK-2893:
----------------------------------------------

             Summary: The Agent attempts to re-create a already existing Libvirt Storage pool
when creating a volume
                 Key: CLOUDSTACK-2893
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-2893
             Project: CloudStack
          Issue Type: Bug
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: KVM
    Affects Versions: 4.1.0
         Environment: - Ubuntu 12.04.2
- Libvirt 1.0.2 (Cloud Archive PPA from Canonical)
- CloudStack 4.1
            Reporter: Wido den Hollander
             Fix For: 4.1.1


When trying to deploy a new Instance I saw the following Exception in my logs:

2013-06-07 08:19:18,832 DEBUG [cloud.agent.Agent] (agentRequest-Handler-7:null) Processing
command: com.cloud.agent.api.storage.CreateCommand

2013-06-07 08:19:18,840 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-7:null)
Failed to create volume: com.cloud.utils.exception.CloudRuntimeException: org.libvirt.LibvirtException:
Requested operation is not valid: Target '/mnt/52801816-fe44-3a2b-a147-bb768eeea295' is already
mounted

2013-06-07 08:19:18,841 DEBUG [cloud.agent.Agent] (agentRequest-Handler-7:null) Seq 12-477959384:
 { Ans: , MgmtId: 207376724852, via: 12, Ver: v1, Flags: 110, [{"storage.CreateAnswer":{"requestTemplateReload":false,"result":false,"details":"Exception:
com.cloud.utils.exception.CloudRuntimeException\nMessage: org.libvirt.LibvirtException: Requested
operation is not valid: Target '/mnt/52801816-fe44-3a2b-a147-bb768eeea295' is already mounted\nStack:
com.cloud.utils.exception.CloudRuntimeException: org.libvirt.LibvirtException: Requested operation
is not valid: Target '/mnt/52801816-fe44-3a2b-a147-bb768eeea295' is already mounted\n\tat
com.cloud.hypervisor.kvm.storage.LibvirtStorageAdaptor.getStoragePool(LibvirtStorageAdaptor.java:427)\n\t
at com.cloud.hypervisor.kvm.storage.KVMStoragePoolManager.getStoragePool(KVMStoragePoolManager.java:71)\n\t
at com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.execute(LibvirtComputingResource.java:1271)\n\t
at com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.executeRequest(LibvirtComputingResource.java:1072)\n\tat
com.cloud.agent.Agent.processRequest(Agent.java:525)\n\t
at com.cloud.agent.Agent$AgentRequestHandler.doTask(Agent.java:852)\n\tat com.cloud.utils.nio.Task.run(Task.java:83)\n\tat
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)\n\tat
java.lang.Thread.run(Thread.java:679)\n","wait":0}}] }


The Agent seems to try and create the storage pool again and Libvirt will try to mount it,
but it is already mounted.

The Storage pool is actually already running on that Hypervisor, but there seems to be a miscommuncation
between libvirt and the Agent.


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