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

[Marcel Apfelbaum <marcel@redhat.com>]

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" <star.idv@gmail.com>
> À: "Marcel Apfelbaum" <marcel@redhat.com>
> Cc: "qemu-devel" <qemu-devel@nongnu.org>
> 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 < marcel@redhat.com > 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
>