Hi All,
I'm facing a following issue with OVS-DPDK dpdkvhostuser port. I was able to
create ovs bridge with dpdkvhostuser port types and able to ping the gateway
from ovs bridges on the host. But when I'm creating guest VM using
dpdkvhostuser port type, not able to ping gateway on guest VM. Not seeing any
error logs in vswitchd log.
Following are the list of commands that I used:
[root@kujo ~]# ovs-vsctl --no-wait add-br pkt1 -- set Bridge pkt1
datapath_type=netdev
[root@kujo ~]# ovs-vsctl add-port pkt1 dpdk0 -- set Interface dpdk0 type=dpdk
[root@kujo ~]# ovs-vsctl add-port pkt1 vhostuser0 -- set Interface vhostuser0
type=dpdkvhostuser
[root@kujo ~]# qemu-system-x86_64 -smp 4 -boot d -cdrom TinyCore-current.iso
-m 512 TinyCore-current.iso -boot d -name varun -object
memory-backend-file,id=mem,size=8192M,mem-path=/dev/hugepages,share=on
-mem-prealloc -chardev
socket,id=char1,path=/usr/local/var/run/openvswitch/vhostuser0 -netdev
type=vhost-user,id=mynet1,chardev=char1,vhostforce -device
virtio-net-pci,mac=52:55:00:00:20:11,netdev=mynet1 -daemonize
qemu-system-x86_64: -netdev type=vhost-user,id=mynet1,chardev=char1,vhostforce:
chardev "char1" went up
WARNING: Image format was not specified for 'TinyCore-current.iso' and probing
guessed raw.
Automatically detecting the format is dangerous for raw images, write
operations on block 0 will be restricted.
Specify the 'raw' format explicitly to remove the restrictions.
VNC server running on `::1:5900'
[root@kujo ~]# ifconfig pkt1 10.54.218.88 netmask 255.255.255.0 up
[root@kujo ~]# ping -I pkt1 10.54.218.1 [on host]
PING 10.54.218.1 (10.54.218.1) from 10.54.218.88 pkt1: 56(84) bytes of data.
64 bytes from 10.54.218.1<http://10.54.218.1>: icmp_seq=1 ttl=255 time=11.7 ms
64 bytes from 10.54.218.1<http://10.54.218.1>: icmp_seq=2 ttl=255 time=0.930 ms
^C
--- 10.54.218.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 0.930/6.351/11.773/5.422 ms
[root@kujo ~]# ovs-vsctl show
2a8a86f3-b813-43a4-826e-dd778aafbcec
Bridge "pkt1"
Port "pkt1"
Interface "pkt1"
type: internal
Port "dpdk0"
Interface "dpdk0"
type: dpdk
Port "vhostuser0"
Interface "vhostuser0"
type: dpdkvhostuser
[root@kujo ~]# ovs-ofctl dump-flows pkt1
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=86.627s, table=0, n_packets=89, n_bytes=8446, idle_age=0,
priority=0 actions=NORMAL
[root@kujo ~]# ovs-ofctl dump-ports pkt1
OFPST_PORT reply (xid=0x2): 3 ports
port LOCAL: rx pkts=11, bytes=830, drop=0, errs=0, frame=0, over=0, crc=0
tx pkts=5, bytes=434, drop=0, errs=0, coll=0
port 1: rx pkts=86, bytes=8638, drop=0, errs=0, frame=0, over=0, crc=0
tx pkts=11, bytes=928, drop=0, errs=0, coll=0
port 2: rx pkts=0, bytes=?, drop=?, errs=?, frame=?, over=?, crc=?
tx pkts=0, bytes=?, drop=11, errs=?, coll=?
When i'm pinging the guest VM IP [10.54.218.244], I could see the packets
coming on ovs bridge interface.
[root@kujo ~]# ifconfig pkt1
pkt1: flags=323<UP,BROADCAST,RUNNING,PROMISC> mtu 1500
inet 10.54.218.88 netmask 255.255.255.0 broadcast 10.54.218.255
inet6 fe80::e611:5bff:fe98:962 prefixlen 64 scopeid 0x20<link>
ether e4:11:5b:98:09:62 txqueuelen 500 (Ethernet)
RX packets 10 bytes 850 (850.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 11 bytes 830 (830.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@kujo ~]# tcpdump -i pkt1
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on pkt1, link-type EN10MB (Ethernet), capture size 65535 bytes
11:01:36.852756 ARP, Request who-has 10.54.218.244 tell 10.54.218.1, length 46
11:01:41.581666 ARP, Request who-has 10.54.218.244 tell 10.54.218.1, length 46
^C
2 packets captured
2 packets received by filter
0 packets dropped by kernel
[root@kujo ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.54.28.1 0.0.0.0 UG 100 0 0 eno1
10.54.28.0 0.0.0.0 255.255.254.0 U 100 0 0 eno1
10.54.218.0 0.0.0.0 255.255.255.0 U 0 0 0 pkt1
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
Please give me some points to debug this issue. Few months back I used the same
steps on the same host, it worked fine. I didn't face this kind of issue.
Thanks in advance.
Regards,
Varun
Regards,
Varun
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