Wido den Hollander created CLOUDSTACK-2893:
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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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