Re: [Qemu-devel] [wiki] New wiki page - vhost-user setup with ovs/dpdk backend

[Marcel Apfelbaum]

On 09/22/2015 05:17 PM, Alexandre DERUMIER wrote:
> Hi,
>
> Ovs documentation say that 1GB hugepage are needed
> https://github.com/openvswitch/ovs/blob/master/INSTALL.DPDK.md
>
> is is true ?  (as the wiki say 2M hugepages)

Not for this scenario :) . For this one 2M hugepages are enough (tested already 
by  a few developers), try it in your laptop!

Thanks,
Marcel

> ----- Mail original -----
> De: "Star Chang" <address@hidden>
> À: "Marcel Apfelbaum" <address@hidden>
> Cc: "qemu-devel" <address@hidden>
> Envoyé: Mardi 22 Septembre 2015 07:43:13
> Objet: Re: [Qemu-devel] [wiki] New wiki page - vhost-user setup with ovs/dpdk 
> backend
>
> Thanks Marcel!!!
>
>
> After tailing the logs and basic troubleshooting, we finally can have 2 VMs to 
> ping to each other. One dpdkvhostuser interface is for each VM and we have to 
> new add flows based on dpdkvhostuser ofport numbers.
>
>
> Another issue we might post it to proper mail loop is that we run pktgen-dpdk 2.9.1 
> inside of VM but no packets counted from pktgen terminal display. It is so weird that we 
> only see 128 tx packets bursted out and then nothing is continue working. After that, we 
> try to dump-flows via ovs-ofctl utility but it shows "connection refued". I am 
> not sure have any one of you guys ideas here? Thanks!!!
>
>
>
>
>
> Bridge "ovsbr0"
>
> Port "ovsbr0"
>
> Interface "ovsbr0"
>
> type: internal
>
> Port "dpdk1"
>
> Interface "dpdk1"
>
> type: dpdk
>
> Port "dpdk0"
>
> Interface "dpdk0"
>
> type: dpdk
>
> Port "vhost-user1"
>
> Interface "vhost-user1"
>
> type: dpdkvhostuser
>
> Port "vhost-user0"
>
> Interface "vhost-user0"
>
> type: dpdkvhostuser
>
> On Tue, Sep 22, 2015 at 2:34 AM, Marcel Apfelbaum < address@hidden > wrote:
>
>
> On 09/21/2015 11:25 AM, Marcel Apfelbaum wrote:
>
> BQ_BEGIN
> On 09/21/2015 08:01 AM, Star Chang wrote:
>
> BQ_BEGIN
> Hi Marcel:
>
> Many thanks for you to contribute wiki page in how to configuring vhost-user 
> type with openvsitch/qemu in VM environment.
>
> We bring 2 VMs up with vhost-user type. We can see eth0 interfaces created in 2 
> VMs with proper mac address we assign. After IP address assignment, 2 VMs could 
> not PING to each other when they are in
> the same subnet. There are not packets at all in count when running ovs-ofctl 
> dump-ports :(
>
> However, we check link up state via ovs-ofctl utility but LINK_DOWN as below. 
> Have any one with experiences and give some helps … Thanks!!
>
>
>
>
> Hi,
>
> I would look into OVS log for specific issues:
>
> journalctl --since `date +%T --date="-10 minutes"`
>
> The above command will show you the last 10 minutes log.
> You are welcomed to show us the log.
>
>
> BQ_END
>
> I forgot to CC the list.
>
> Thanks,
> Marcel
>
>
>
> BQ_BEGIN
> Thanks,
> Marcel
>
>
> BQ_BEGIN
> $ sudo ./utilities/ovs-ofctl show ovsbr0
> OFPT_FEATURES_REPLY (xid=0x2): dpid:00000670da615e4a
> n_tables:254, n_buffers:256
> capabilities: FLOW_STATS TABLE_STATS PORT_STATS QUEUE_STATS ARP_MATCH_IP
> actions: output enqueue set_vlan_vid set_vlan_pcp strip_vlan mod_dl_src 
> mod_dl_dst mod_nw_src mod_nw_dst mod_nw_tos mod_tp_src mod_tp_dst
> 1(vhost-user1): addr:00:00:00:00:00:00
> config: PORT_DOWN
> state: LINK_DOWN
> speed: 0 Mbps now, 0 Mbps max
> 2(vhost-user2): addr:00:00:00:00:00:00
> config: PORT_DOWN
> state: LINK_DOWN
> speed: 0 Mbps now, 0 Mbps max
> LOCAL(ovsbr0): addr:06:70:da:61:5e:4a
> config: PORT_DOWN
> state: LINK_DOWN
> current: 10MB-FD COPPER
> speed: 10 Mbps now, 0 Mbps max
> OFPT_GET_CONFIG_REPLY (xid=0x4): frags=normal miss_send_len=0
>
>
>
> Thanks,
> Star