[jira] [Created] (CLOUDSTACK-5452) KVM - Agent is not able to connect back if management server was restarted when there are pending tasks to this host.

["Sangeetha Hariharan (JIRA)" <ji...@apache.org>]

Sangeetha Hariharan created CLOUDSTACK-5452:
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             Summary: KVM - Agent is not able to connect back if management server was restarted when there are pending tasks to this host.
                 Key: CLOUDSTACK-5452
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-5452
             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


KVM - Agent is not able to connect back if management server was restarted when there are pending tasks to this host.

Steps to reproduce the problem:

Set up - Advanced zone with 2 KVM ( RHEL 6.3) hosts.

Deployed few Vms.
Started snapshot for ROOT volume of the VMs.

When the snapshot processes  are still in progress , restart management server.

When the management sever started , the KVM hosts remain in disconnected state.

Attempt to stop Vms /start Vms fails because of having no connection to the host.

Following is seen in agent logs:

2013-12-10 20:56:46,640 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Lost connection to the server. Dealing with the remaining commands...
2013-12-10 20:56:46,640 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Cannot connect because we still have 1 commands in progress.
2013-12-10 20:56:51,641 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Lost connection to the server. Dealing with the remaining commands...
2013-12-10 20:56:51,642 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Cannot connect because we still have 1 commands in progress.
2013-12-10 20:56:56,642 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Lost connection to the server. Dealing with the remaining commands...
2013-12-10 20:56:56,643 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Cannot connect because we still have 1 commands in progress.
2013-12-10 20:57:01,644 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Lost connection to the server. Dealing with the remaining commands...
2013-12-10 20:57:01,644 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Cannot connect because we still have 1 commands in progress.
2013-12-10 20:57:06,644 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Lost connection to the server. Dealing with the remaining commands...
2013-12-10 20:57:06,645 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Cannot connect because we still have 1 commands in progress.
2013-12-10 20:57:11,645 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Lost connection to the server. Dealing with the remaining commands...
2013-12-10 20:57:11,646 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Cannot connect because we still have 1 commands in progress.
2013-12-10 20:57:16,647 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Lost connection to the server. Dealing with the remaining commands...
2013-12-10 20:57:16,647 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Cannot connect because we still have 1 commands in progress.
2013-12-10 20:57:21,648 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Lost connection to the server. Dealing with the remaining commands...
2013-12-10 20:57:21,648 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Cannot connect because we still have 1 commands in progress.
2013-12-10 20:57:26,649 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Lost connection to the server. Dealing with the remaining commands...
2013-12-10 20:57:26,675 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Cannot connect because we still have 1 commands in progress.
2013-12-10 20:57:31,676 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Lost connection to the server. Dealing with the remaining commands...
2013-12-10 20:57:31,677 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Cannot connect because we still have 1 commands in progress.
2013-12-10 20:57:36,678 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Lost connection to the server. Dealing with the remaining commands...
2013-12-10 20:57:36,678 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Cannot connect because we still have 1 commands in progress.
2013-12-10 20:57:41,678 INFO  [cloud.agent.Agent] (Agent-Handler-2:null) Lost connection to the server. Dealing with the remaining commands...
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