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From "Murali Reddy (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CLOUDSTACK-6763) [OVS] Deleting one ovs bridge deletes flow table entries for other bridge as well
Date Wed, 11 Jun 2014 10:42:02 GMT

     [ https://issues.apache.org/jira/browse/CLOUDSTACK-6763?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Murali Reddy resolved CLOUDSTACK-6763.
--------------------------------------

    Resolution: Duplicate

Root cause is same as 6779. There is crash of OVSswitch daemon which results in bridges getting
recreated. Once bridge is recreated we loose all the flow rules configured for the brdige.

> [OVS] Deleting one ovs bridge deletes flow table entries for other bridge as well
> ---------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-6763
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-6763
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Management Server, Network Controller, XenServer
>    Affects Versions: 4.4.0
>         Environment: Latest build from 4.4 with commit d130530bd3e1cd6d8249d5045e00e4e4e2201521
>            Reporter: Sanjeev N
>            Assignee: Murali Reddy
>            Priority: Critical
>              Labels: ovs
>             Fix For: 4.4.0
>
>
> [OVS] Deleting one ovs bridge deletes flow table entries for other bridge as well
> Steps to Reproduce:
> =================
> 1.Bring up CS in advanced zone with two hosts in a xen cluster
> 2.Create physical network with GRE isolation
> 3.Create network offering with connectivity service and OVS as the provider
> 4.Create a user account and deploy few vms with above network offering (make sure vms
are spanned across the hosts)
> 5.Create another user account and repeat step4
> 6.Destroy all vms in account2
> 7.Verify flow table rules for the ovs bridge created for account1 network
> Result:
> =======
> After deleting account2 vms ovs bridge for this network was destroyed from both the hosts
and also the flow table rules for account1 network were also deleted from both the hosts
> Observations:
> ===========
> xapi3 is the bridge created for account2 network and xapi2 is for account1 network.
> xapi3 is for network: OVSTunnel983
> xapi2 is for network: OVSTunnel984
> Following is the log snippet from MS log file for deleting OVS Bridge:
> 2014-05-26 12:08:59,334 DEBUG [o.a.c.e.o.NetworkOrchestrator] (Work-Job-Executor-11:ctx-4073a866
job-41/job-42 ctx-e591f82f) Asking Ovs to release NicProfile[15-8-038ca005-deeb-4146-addf-5f8f96436e68-10.1.1.11-null
> 2014-05-26 12:08:59,335 DEBUG [c.c.n.e.OvsElement] (Work-Job-Executor-11:ctx-4073a866
job-41/job-42 ctx-e591f82f) Checking if OvsElement can handle service Connectivity on network
test2-ovs
> 2014-05-26 12:08:59,344 DEBUG [c.c.n.o.OvsTunnelManagerImpl] (Work-Job-Executor-11:ctx-4073a866
job-41/job-42 ctx-e591f82f) Destroying bridge for network 206 on host:1
> 2014-05-26 12:08:59,350 DEBUG [c.c.a.t.Request] (Work-Job-Executor-11:ctx-4073a866 job-41/job-42
ctx-e591f82f) Seq 1-8670555182595048072: Sending  { Cmd , MgmtId: 7332683579487, via: 1(Rack1Pod1Host13),
Ver: v1, Flags: 100111, [{"com.cloud.agent.api.OvsDestroyBridgeCommand":{"networkId":206,"name":"OVSTunnel983","hostId":1,"wait":0}}]
}
> 2014-05-26 12:08:59,350 DEBUG [c.c.a.t.Request] (Work-Job-Executor-11:ctx-4073a866 job-41/job-42
ctx-e591f82f) Seq 1-8670555182595048072: Executing:  { Cmd , MgmtId: 7332683579487, via: 1(Rack1Pod1Host13),
Ver: v1, Flags: 100111, [{"com.cloud.agent.api.OvsDestroyBridgeCommand":{"networkId":206,"name":"OVSTunnel983","hostId":1,"wait":0}}]
}
> 2014-05-26 12:08:59,350 DEBUG [c.c.a.m.DirectAgentAttache] (DirectAgent-183:ctx-51a7921b)
Seq 1-8670555182595048072: Executing request
> 2014-05-26 12:08:59,395 DEBUG [c.c.h.x.r.CitrixResourceBase] (DirectAgent-183:ctx-51a7921b)
A VIF for dom0 has already been found - No need to create one
> 2014-05-26 12:08:59,414 DEBUG [c.c.h.x.r.CitrixResourceBase] (DirectAgent-183:ctx-51a7921b)
Xen Server network for tunnels found:OVSTunnel983
> 2014-05-26 12:08:59,451 DEBUG [c.c.h.x.r.CitrixResourceBase] (DirectAgent-183:ctx-51a7921b)
A VIF in dom0 for the network is found - so destroy the vif
> 2014-05-26 12:08:59,455 DEBUG [c.c.h.x.r.CitrixResourceBase] (DirectAgent-183:ctx-51a7921b)
Destroy temp dom0 vifOVSTunnel983 success
> 2014-05-26 12:08:59,816 DEBUG [c.c.h.x.r.CitrixResourceBase] (DirectAgent-183:ctx-51a7921b)
OVS Bridge destroyed
> 2014-05-26 12:08:59,828 DEBUG [c.c.n.o.OvsTunnelManagerImpl] (Work-Job-Executor-11:ctx-4073a866
job-41/job-42 ctx-e591f82f) Destroy bridge fornetwork 206 successful
> 2014-05-26 12:08:59,830 DEBUG [c.c.n.o.OvsTunnelManagerImpl] (Work-Job-Executor-11:ctx-4073a866
job-41/job-42 ctx-e591f82f) Destroying tunnel to 1 from 4
> 2014-05-26 12:08:59,835 DEBUG [c.c.a.t.Request] (Work-Job-Executor-11:ctx-4073a866 job-41/job-42
ctx-e591f82f) Seq 4-1333065489701667402: Sending  { Cmd , MgmtId: 7332683579487, via: 4(Rack1Pod1Host14),
Ver: v1, Flags: 100111, [{"com.cloud.agent.api.OvsDestroyTunnelCommand":{"networkId":206,"networkName":"OVSTunnel983","inPortName":"t983-4-1","wait":0}}]
}
> 2014-05-26 12:08:59,835 DEBUG [c.c.a.t.Request] (Work-Job-Executor-11:ctx-4073a866 job-41/job-42
ctx-e591f82f) Seq 4-1333065489701667402: Executing:  { Cmd , MgmtId: 7332683579487, via: 4(Rack1Pod1Host14),
Ver: v1, Flags: 100111, [{"com.cloud.agent.api.OvsDestroyTunnelCommand":{"networkId":206,"networkName":"OVSTunnel983","inPortName":"t983-4-1","wait":0}}]
}
> 2014-05-26 12:08:59,836 DEBUG [c.c.a.m.DirectAgentAttache] (DirectAgent-366:ctx-9fccde26)
Seq 4-1333065489701667402: Executing request
> 2014-05-26 12:08:59,869 DEBUG [c.c.h.x.r.CitrixResourceBase] (DirectAgent-366:ctx-9fccde26)
A VIF for dom0 has already been found - No need to create one
> 2014-05-26 12:08:59,888 DEBUG [c.c.h.x.r.CitrixResourceBase] (DirectAgent-366:ctx-9fccde26)
Xen Server network for tunnels found:OVSTunnel983
> 2014-05-26 12:09:00,034 DEBUG [c.c.a.m.DirectAgentAttache] (DirectAgent-366:ctx-9fccde26)
Seq 4-1333065489701667402: Response Received:
> 2014-05-26 12:09:00,035 DEBUG [c.c.a.t.Request] (DirectAgent-366:ctx-9fccde26) Seq 4-1333065489701667402:
Processing:  { Ans: , MgmtId: 7332683579487, via: 4, Ver: v1, Flags: 110, [{"com.cloud.agent.api.Answer":{"result":true,"details":"SUCCESS","wait":0}}]
}
> 2014-05-26 12:09:00,035 DEBUG [c.c.a.t.Request] (Work-Job-Executor-11:ctx-4073a866 job-41/job-42
ctx-e591f82f) Seq 4-1333065489701667402: Received:  { Ans: , MgmtId: 7332683579487, via: 4,
Ver: v1, Flags: 110, { Answer } }
> 2014-05-26 12:09:00,039 DEBUG [c.c.a.m.AgentAttache] (DirectAgent-366:ctx-9fccde26) Seq
4-1333065489701667402: No more commands found
> 2014-05-26 12:09:00,044 DEBUG [c.c.n.o.OvsTunnelManagerImpl] (Work-Job-Executor-11:ctx-4073a866
job-41/job-42 ctx-e591f82f) Destroy tunnel(account:206,from:4, to:1) successful
> Flow table entries for xapi2 after deleting xapi3:
> [root@Rack1Pod1Host14 ~]# ovs-ofctl dump-flows xapi2
> NXST_FLOW reply (xid=0x4):
>  cookie=0x0, duration=1445.526s, table=0, n_packets=0, n_bytes=0, priority=0 actions=NORMAL
> [root@Rack1Pod1Host14 ~]#
> [root@Rack1Pod1Host13 ~]# ovs-ofctl dump-flows xapi2
> NXST_FLOW reply (xid=0x4):
>  cookie=0x0, duration=2276.347s, table=0, n_packets=84, n_bytes=7670, priority=0 actions=NORMAL
> [root@Rack1Pod1Host13 ~]#
> Attaching MS log file and ovstunnel log file from both the hosts



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