Thanks Ciara for your kindly highlights!
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 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
-----Original Message-----
From: Loftus, Ciara [mailto:[email protected]]
Sent: Monday, September 21, 2015 5:23 PM
To: Star.Chang
Cc: '[email protected]'
Subject: RE: [ovs-discuss] vhost-user state in openvswitch
>
> 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 network segment.
> 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!!!
> $ 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
Hi,
You can ignore the LINK_DOWN state - it does not give the correct state of the
port at the moment.
Can you make sure the default (NORMAL) flow is installed in the switch which
should allow these pings to be sent/received? eg:
ovs-ofctl dump-flows br0
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=136.745s, table=0, n_packets=121, n_bytes=22148,
idle_age=15, priority=0 actions=NORMAL
Also some quick things to check:
- Make sure you are using a separate vhost-user port per VM ie. not using the
same socket device on 2 VMs.
- You are using QEMU v2.2.0 or later
Thanks,
Ciara
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