Bug 1422447

Summary:	[TEXT] Moving an existing NIC from an oVirt network to one on an external provider does not require stopping a VM, unplug is fine too
Product:	[oVirt] ovirt-engine	Reporter:	Simone Tiraboschi <stirabos>
Component:	BLL.Network	Assignee:	Marcin Mirecki <mmirecki>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Meni Yakove <myakove>
Severity:	low	Docs Contact:
Priority:	low
Version:	future	CC:	bugs, danken, lveyde, mkalfon, ylavi
Target Milestone:	ovirt-4.1.2	Flags:	rule-engine: ovirt-4.1+
Target Release:	4.1.2
Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2017-05-23 08:15:20 UTC	Type:	Bug
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oVirt Team:	Network	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Description Simone Tiraboschi 2017-02-15 11:18:02 UTC

Description of problem:
I have a VM on the management network, I add the new OVN provider as an external provider in oVirt and I create a new logical network there.

If I try to unplug the 'virtual cable' of the nic of my VM from the management network and plug it into the new logical network on the OVN external provider I get an error from the engine:
Cannot edit Interface. External network cannot be changed while the virtual machine is running.

So it seams that I've to reboot a VM if I just want to unplug a virtual cable and plug somewhere else.

Unplugging the previous nic and hot-plugging a new one seams instead to work but has an impact on the guest OS.

Version-Release number of selected component (if applicable):
4.1.0

How reproducible:
100%

Steps to Reproduce:
1. add an external network
2. try changing an existing nic from an oVirt logical network to a logical network on an external provider without creating a new nic for that
3.

Actual results:
Error message: Cannot edit Interface. External network cannot be changed while the virtual machine is running.

Expected results:
Two options:
1. oVirt internally unplug the previous device and adds a new one with the same uuid pointing to the external network
2. we simply change the error message saying to the user that he has to hpt-unplug and hot-plug a new ic and not just the virtual cable

Additional info:

Comment 1 Dan Kenigsberg 2017-02-20 10:25:20 UTC

I suggest only a text change:

"""
Cannot edit Interface. External network cannot be changed while plugged into a running virtual machine. Stop the VM or unplug the vNIC before editing.
"""

Comment 2 Mor 2017-04-26 14:53:05 UTC

Verified on:
Red Hat Virtualization Manager Version: 4.1.2-0.1.el7

"Cannot edit Interface. External network cannot be changed while plugged into a running virtual machine. Stop the VM or unplug the vNIC before editing."