[NETVIRT-136] in 3node tunnels fail to create due to concurrency lock - cluster behavior is missing Created: 12/Sep/16  Updated: 30/Oct/17  Resolved: 22/Nov/16

Status: Resolved
Project: netvirt
Component/s: General
Affects Version/s: Boron
Fix Version/s: None

Type: Bug
Reporter: Ravit Peretz Assignee: Unassigned
Resolution: Cannot Reproduce Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified
Environment:

Operating System: All
Platform: All

External issue ID: 6699

 Description   

running netvirt-vpnservice-csit-3node-openstack-mitaka-openstack-boron
one of the computes is lacking tunnels rules in table 21 for all vms defined.
In the log, there is an error:

2016-09-11 13:18:04,672 | WARN | pool-45-thread-9 | TransportZoneNotificationUtil | 314 - org.opendaylight.netvirt.neutronvpn-impl - 0.3.0.SNAPSHOT | failed to add tunnels on router added of routerDpnList RouterDpnList{getDpnVpninterfacesList=[DpnVpninterfacesList{getDpnId=198081082022276, augmentations={}}, DpnVpninterfacesList{getDpnId=250746723134214, augmentations={}}, DpnVpninterfacesList{getDpnId=17607834328568, augmentations={}}], getRouterId=4ee3bdd3-b005-4e4f-b313-8e4d35503a85, augmentations={}} due to OptimisticLockFailedException

{message=Optimistic lock failed., errorList=[RpcError [message=Optimistic lock failed., severity=ERROR, errorType=APPLICATION, tag=resource-denied, applicationTag=null, info=null, cause=org.opendaylight.yangtools.yang.data.api.schema.tree.ConflictingModificationAppliedException: Node was replaced by other transaction.]]}

Seems like the error was caused by multiple odls handling the same transport zone in TransportZoneNotificationUtil.

 Comments   
Comment by Bertrand Low [ 12/Sep/16 ]

Hi Ravit,

which particular run was this issue found and is it reproducible?

https://jenkins.opendaylight.org/releng/view/netvirt/job/netvirt-vpnservice-csit-3node-openstack-mitaka-openstack-boron/

While the symptom of missing tunnel flow entries may be the same as NETVIRT-113 the "failed to add tunnels on router" TransportZoneNotificationUtil error is not found in the logs for NETVIRT-113. So, imho, it is too early to say that the root cause of these two bugs are the same.

Comment by Ravit Peretz [ 12/Sep/16 ]

Hi Bertrand,
indeed, this is not a duplicate for NETVIRT-113 as this bug involves vpnservice while the other has been opened on the legacy code (old netvirt)..

This issue was found on multiple downstream job runs.

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