Re: [ovirt-devel] [ovirt-users] How to add ovs-based VM in version 4.0.2? Thank you

3 Aug 2016

      Hi petr,
	I just found it. Thank you.

Best wishes

-----邮件原件-----
发件人: Petr Horacek [mailto:phoracek@redhat.com] 
发送时间: 2016年8月3日 17:22
收件人: lifuqiong
抄送: Meni Yakove; Dan Kenigsberg; Michael Burman; devel
主题: Re: [ovirt-users] [ovirt-devel] How to add ovs-based VM in version 4.0.2? Thank you

Hello,

don't forget you still need latest patches which are not part of
ovirt-release40 nor ovirt-release-master.

Network setup is handled by supervdsmd.service, logs are located in /var/log/vdsm/supervdsm.log. Network API entrypoint is in /usr/lib/python2.7/site-packages/vdsm/network/api.py.

2016-08-03 9:58 GMT+02:00 lifuqiong <lifuqiong@cncloudsec.com>:
...
Hi petr,
        I followed your instruction last mail, re-install an Centos 7.2 1503(ip:192.168.0.117), and executing 'yum install http://plain.resources.ovirt.org/pub/ovirt-4.0-pre/rpm/el7/noarch/ovirt-rele...'
 On the new system.
Creating an cluster using ovs-based network, and install 
vdsm(192.168.0.117); deploy log shows that meeting an error as 
follows: But I cann't find out the code which implements the function 
of setupNetworks,
Just find the setupNetwork() function was defined in API.py, what does this function do actually, where is the code ? and how to fix this error?
jsonrpc.Executor/4::ERROR::2016-08-02 
22:35:03,321::__init__::549::jsonrpc.JsonRpcServer::(_handle_request) Internal server error Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/yajsonrpc/__init__.py", line 544, in _handle_request
    res = method(**params)
  File "/usr/lib/python2.7/site-packages/vdsm/rpc/Bridge.py", line 195, in _dynamicMethod
    result = fn(*methodArgs)
  File "/usr/share/vdsm/API.py", line 1465, in setupNetworks
    supervdsm.getProxy().setupNetworks(networks, bondings, options)
  File "/usr/lib/python2.7/site-packages/vdsm/supervdsm.py", line 53, in __call__
    return callMethod()
  File "/usr/lib/python2.7/site-packages/vdsm/supervdsm.py", line 51, in <lambda>
    **kwargs)
  File "<string>", line 2, in setupNetworks
  File "/usr/lib64/python2.7/multiprocessing/managers.py", line 773, in _callmethod
    raise convert_to_error(kind, result)
IPRoute2Error: ['RTNETLINK answers: File exists']
Hope get your help asp.
Thank you
Mark
-----邮件原件-----
发件人: Petr Horacek [mailto:phoracek@redhat.com]
发送时间: 2016年8月3日 1:50
收件人: lifuqiong
抄送: Meni Yakove; Dan Kenigsberg; Michael Burman; devel
主题: Re: 答复: [ovirt-users] [ovirt-devel] How to add ovs-based VM in 
version 4.0.2? Thank you
If everything goes well, it will be in master this week. I don't know when it will be part of 4.0.
I installed master VDSM patched with
https://gerrit.ovirt.org/#/q/topic:ovs_acquire on my host (Fedora 23 with disabled NetworkManager) and it worked OK. You can try to build it on your own [1]. If you hit any problem, feel free to ask.
We'd like to go that way, but nothing specific yet.
[1] http://www.ovirt.org/develop/developer-guide/vdsm/developers/
2016-08-02 14:15 GMT+02:00 lifuqiong <lifuqiong@cncloudsec.com>:
...
Hi Petr,
        Thank you
        When the patch will merge to master? And when will the vdsm will release a version with this patch?
        Btw, do you have a plan to support ovs with dpdk or vhost-user port?  If so, what's the pipeline?
Thank you
-----邮件原件-----
发件人: Petr Horacek [mailto:phoracek@redhat.com]
发送时间: 2016年8月2日 19:53
收件人: lifuqiong
抄送: Meni Yakove; Dan Kenigsberg; Michael Burman; devel
主题: Re: [ovirt-users] [ovirt-devel] How to add ovs-based VM in 
version 4.0.2? Thank you
Clean == host that has just NICs, like right after system installation (no networks created by VDSM, bridges, bonds, vlans). Anyway, VDSM OVS is not able to acquire external NICs yet (the patch is under review and will be merged to master soon [1]).
I would recommend you to wait for VDSM with mentioned patch merged. If you cannot wait, you can try to setup ovirtmgmt network manually via console (turn down NIC, setup OVS network on top of it). Not sure if this would help you.
[1] https://gerrit.ovirt.org/#/c/60404/29
2016-08-02 13:30 GMT+02:00 lifuqiong <lifuqiong@cncloudsec.com>:
...
Hi Petr,
        Thank you for your advice. But what does "Clean hosts" mean, 
as I know now, When you add a clean Host to ovirt engine, the vdsm or ovirt node will create a Network named ovirtmgmt, which is an Linux bridge network, How do I clean the network? Just delete the linux bridge and reset the linux bridge binding's physical Nic?
Hope to get your help as sonn as possible.
        Thank you.
        Mark
-----邮件原件-----
发件人: Petr Horacek [mailto:phoracek@redhat.com]
发送时间: 2016年8月2日 18:29
收件人: lifuqiong
抄送: Meni Yakove; Dan Kenigsberg; Michael Burman; users
主题: Re: [ovirt-users] [ovirt-devel] How to add ovs-based VM in 
version 4.0.2? Thank you
If the host was a part of legacy cluster you must do manual cleanup of all networks. Currently VDSM cannot change Linux bridges into OVS ones (this will be implemented soon). Make sure that you are adding clean hosts (with NIC interface/s only) to OVS cluster.
Regards,
Petr
2016-08-02 10:01 GMT+02:00 Michael Burman <mburman@redhat.com>:
...
Hi ,
Did you synced network/s after you moved the host to the ovs type cluster?
It seems like you didn't..)
Go to 'Hosts' main tab' and choose the host, go to 'Network 
Interfaces' sub tab and press the 'Sync All Networks' , now the 
networks should be synced to host as ovs switch type.
Run the vm and check the xml.
It should look something like this:
<source bridge='vdsmbr_nRL3asDq'/>
      <virtualport type='openvswitch'>
thanks
On Tue, Aug 2, 2016 at 9:37 AM, Meni Yakove <myakove@redhat.com> wrote:
...
On Tue, Aug 2, 2016 at 7:12 AM, lifuqiong 
<lifuqiong@cncloudsec.com>
wrote:
...
I create a cluster which already enabled ovs network as you 
mentioned , but when I create vm in this cluster,  I can only 
using ovirtmgmt/ovirtmgmt vNIC profile, which is still a Linux bridge.
I found no way to add a OVS vNIC profile,  I have to chose 
ovirtmgmt/ovirtmgmt vNIC to setup a VM. After VM is started, the 
vm is still using Linux bridge to communicate with outside, not the ovs.
Need I to create a ovs bridge or vport and bind it to physical 
NIC in vdsm manually?
Hope your reply as soon as possible.
Thank you
Mark
发件人: users-bounces@ovirt.org [mailto:users-bounces@ovirt.org] 代表
Meni Yakove
发送时间: 2016年8月1日 16:42
收件人: Dan Kenigsberg
主题: Re: [ovirt-users] [ovirt-devel] How to add ovs-based VM in 
version 4.0.2? Thank you
On Mon, Aug 1, 2016 at 11:07 AM, Dan Kenigsberg 
<danken@redhat.com>
wrote:
On Mon, Aug 01, 2016 at 02:02:52PM +0800, lifuqiong wrote:
> Hi, I upgrade my ovirt to version 4.0.2.2, how to using ovs in 
> this version?
> Is there any instruction? Thank you
Please note and note well: OVS is not production-grade yet. It is 
only a preliminary tech preview, under active development.
However, we'd be very happy to get your help in testing it (and 
possibly fixing it, too).
When defining a new cluster, you should see a check box, letting 
you select OVS for that cluster.
To be precise, this is not a check box. In the Edit Cluster 
dialog, look at the "switch
type" option, and change "LEGACY" to "OVS".
After being checked, each VM network that is defined in your 
cluster would be implemented with OVS instead of Linux bridge.
As aluded before, there are plenty of known definciencies (e.g., 
no persistence of ip config on VM network, no live migration, not 
all bond modes, etc etc). But do not hesitate to raise other 
issues with the devel mailing list.
Happy testing!
Dan.
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