Bug 840888

Summary: [RHEVM] [backend] [Host Networking] DC/CL 3.0 cannot switch RHEVM network to another interface
Product: Red Hat Enterprise Virtualization Manager Reporter: Martin Pavlik <mpavlik>
Component: ovirt-engineAssignee: Moti Asayag <masayag>
Status: CLOSED CURRENTRELEASE QA Contact: Martin Pavlik <mpavlik>
Severity: high Docs Contact:
Priority: high    
Version: 3.1.0CC: alkaplan, dyasny, ecohen, gklein, iheim, lpeer, Rhev-m-bugs, sgrinber, yeylon, ykaul
Target Milestone: ---Keywords: Regression, Reopened, TestBlocker
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard: network
Fixed In Version: si14 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 849971 (view as bug list) Environment:
Last Closed: 2012-07-18 06:43:19 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Network RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
screenshot 1 none

Description Martin Pavlik 2012-07-17 13:59:12 UTC 
Created attachment 598644 [details]
screenshot 1

Description of problem:
In  DC/CL 3.0 it is not possible to switch rhevm network from one host interface to another. Following error appears:

Error:

localhost.localdomain:

    Previous network name is required.


Version-Release number of selected component (if applicable):
oVirt Engine Version: '3.1.0-6.el6ev' 

How reproducible:
always

Steps to Reproduce:
1. add host more than one NIC into 3.0 cluster
2. Hosts -> your host -> Network Interfaces -> rhevm interface -> Edit Management Network
3. Switch Interface: to different NIC click OK
  
Actual results:
Error message appears

Expected results:
Network should be switched

Additional info:

engine.log
2012-07-17 15:43:22,503 WARN  [org.ovirt.engine.core.bll.UpdateNetworkToVdsInterfaceCommand] (ajp-/0.0.0.0:8009-10) [241808ff] CanDoAction of action UpdateNetworkToVdsInterface failed. Reasons:NETWROK_OLD_NETWORK_NOT_SPECIFIED
Comment 1 Martin Pavlik 2012-07-17 14:28:04 UTC 
This issue also appears when trying to bond rhevm interface with another.
Comment 6 Martin Pavlik 2012-07-26 14:27:45 UTC 
Problem appears when trying to bond any two interfaces
Comment 7 Martin Pavlik 2012-07-26 14:53:59 UTC 
In addition to comment 6, problem appears when trying to bond any 2 interface and one of them has already connected network.
Comment 8 Martin Pavlik 2012-07-26 14:54:14 UTC 
In addition to comment 6, problem appears when trying to bond any 2 interface and one of them has already connected network.
Comment 11 Alona Kaplan 2012-07-30 14:49:54 UTC 
The backend command checks if the network name on the nic (we want to switch rhevm to) is not null (or empty).
As the network name is null the canDoAction fails.
This is a wrong check cause the network name of the nic will always be null (or empty). If there was a network on the nic we won't be able to move the rhevm network to it.
Comment 12 Moti Asayag 2012-08-07 10:42:49 UTC 
A suggested patch:

http://gerrit.ovirt.org/#/c/6971
Comment 13 Moti Asayag 2012-08-12 13:32:53 UTC 
http://gerrit.ovirt.org/gitweb?p=ovirt-engine.git;a=commit;h=e8590ce0e5a37df793873c7b0f9a51eb990d48d2