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[Bug 1708920] [NEW] Cold migration fails

 

Public bug reported:


Nova cold migration intermediate fails due to broken connection to SQL cell database

setup:  devstack master(pike)
		allinone physical server
		compute physical server
		SR-IOV over Mellanox ConnectX-4 NICs
		
Scenario:
    Running tempest cold migration few times, it fails on the 3rd time.	
    #testr run tempest.scenario.test_network_advanced_server_ops.TestNetworkAdvancedServerOps.test_server_connectivity_cold_migration

Issue:
	One of the computes loses sql connection to novacell[1]
        coldmigration fails since it's migration is not allowed to the same node[2]	

Logs:
	AllinOne http://52.169.200.208/tmp/cold_migration_bug_20170806/controller/
	Compute  http://52.169.200.208/tmp/cold_migration_bug_20170806/compute

[1] novacell Error: 
http://52.169.200.208/tmp/cold_migration_bug_20170806/controller/logs/n-cond-cell1.log
http://paste.openstack.org/show/617598/

[2] Compute error 
http://52.169.200.208/tmp/cold_migration_bug_20170806/compute/logs/n-cpu.log
http://paste.openstack.org/show/617599/

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1708920

Title:
  Cold migration fails

Status in OpenStack Compute (nova):
  New

Bug description:
  
  Nova cold migration intermediate fails due to broken connection to SQL cell database

  setup:  devstack master(pike)
  		allinone physical server
  		compute physical server
  		SR-IOV over Mellanox ConnectX-4 NICs
  		
  Scenario:
      Running tempest cold migration few times, it fails on the 3rd time.	
      #testr run tempest.scenario.test_network_advanced_server_ops.TestNetworkAdvancedServerOps.test_server_connectivity_cold_migration

  Issue:
  	One of the computes loses sql connection to novacell[1]
          coldmigration fails since it's migration is not allowed to the same node[2]	

  Logs:
  	AllinOne http://52.169.200.208/tmp/cold_migration_bug_20170806/controller/
  	Compute  http://52.169.200.208/tmp/cold_migration_bug_20170806/compute

  [1] novacell Error: 
  http://52.169.200.208/tmp/cold_migration_bug_20170806/controller/logs/n-cond-cell1.log
  http://paste.openstack.org/show/617598/

  [2] Compute error 
  http://52.169.200.208/tmp/cold_migration_bug_20170806/compute/logs/n-cpu.log
  http://paste.openstack.org/show/617599/

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