Sliver fails with "Exception during join for unit: DD201E11 "

[lnevers@bbn.com]

While attempting to test a scaling scenario with 10 VM slivers, one of the slivers failed. A total of 4 slivers were set up, each using 10 VMs on 1 lan. The first 3 slivers were setup and became ready. The 4th sliver reported a failure for the vlan while all host remained ticketed. Here is the output of the sliver status for the sliver named "ln10vm4":

  "geni_status": "failed", 
  "geni_urn": "urn:publicid:IDN+pgeni.gpolab.bbn.com+slice+ln10vm4", 
  "geni_resources": [
    {
      "orca_expires": "Wed Dec 19 09:55:33 UTC 2012", 
      "geni_urn": "urn:publicid:IDN+exogeni.net:bbnvmsite+sliver+c15d54a4-73fa-41d5-9975-8ac6a8965487#VM-8", 
      "geni_error": "", 
      "geni_status": "Ticketed"
    }, 
    {
      "orca_expires": "Wed Dec 19 09:55:33 UTC 2012", 
      "geni_urn": "urn:publicid:IDN+exogeni.net:bbnvmsite+sliver+c15d54a4-73fa-41d5-9975-8ac6a8965487#VM-7", 
      "geni_error": "", 
      "geni_status": "Ticketed"
    }, 
    {
      "orca_expires": "Wed Dec 19 09:55:33 UTC 2012", 
      "geni_urn": "urn:publicid:IDN+exogeni.net:bbnvmsite+sliver+c15d54a4-73fa-41d5-9975-8ac6a8965487#VM-9", 
      "geni_error": "", 
      "geni_status": "Ticketed"
    }, 
    {
      "orca_expires": "Wed Dec 19 09:55:33 UTC 2012", 
      "geni_urn": "urn:publicid:IDN+exogeni.net:bbnvmsite+sliver+c15d54a4-73fa-41d5-9975-8ac6a8965487#VM-5", 
      "geni_error": "", 
      "geni_status": "Ticketed"
    }, 
    {
      "orca_expires": "Wed Dec 19 09:55:33 UTC 2012", 
      "geni_urn": "urn:publicid:IDN+exogeni.net:bbnvmsite+sliver+c15d54a4-73fa-41d5-9975-8ac6a8965487#Lan", 
      "geni_error": "Reservation 7428811b-40bc-45ec-9455-d80051eebb1c (Slice urn:publicid:IDN+pgeni.gpolab.bbn.com+sl
ice+ln10vm4) is in state [Failed,None], err=resources failed to join: Exception during join for unit: DD201E11 The fo
llowing error occurred while executing this line:\n/opt/orca-12080/tomcat/webapps/orca/WEB-INF/handlers/providers/ben
.no-na.tasks.xml:747: /opt/orca-12080/tomcat/webapps/orca/WEB-INF/handlers/providers/ben.no-na.tasks.xml:759: [OpenFl
ow.CreateSliceTask] An error occurred: Failed to invoke method createSlice in class org.flowvisor.api.FVUserAPIXMLRPC
Impl: Cannot create slice with existing name.\n", 
      "geni_status": "Failed"
    }, 
    {
      "orca_expires": "Wed Dec 19 09:55:33 UTC 2012", 
      "geni_urn": "urn:publicid:IDN+exogeni.net:bbnvmsite+sliver+c15d54a4-73fa-41d5-9975-8ac6a8965487#VM-6", 
      "geni_error": "", 
      "geni_status": "Ticketed"
    }, 
<<<rest deleted>>>

Attaching the RSpec used for all 4 slivers.

[ibaldin@renci.org]

Collision with an old slice. I've cleaned it up.

According to the logs Orca told flowvisor to delete the old slice, but it never did, hence the collision.