[ovs-discuss] OpenvSwitch Message too large

[KhacThuan Bk]

 Hi all,

I'm using ovs with bonding interface. All interface is using mtu 1500.
But in ovs-vswitchd.log i saw some log about "Message too long". I cannot
use ovs-tcpdump to trace message. Any one used face this problem can tell
my what is problem. I have some info follow this.

less /var/log/openvswitch/ovs-vswitchd.log
2020-10-16T10:26:34.876Z|5804855|dpif_netdev|ERR|error receiving data from
bond0: Message too long
2020-10-16T10:26:34.883Z|5804856|dpif_netdev|ERR|error receiving data from
bond0: Message too long
2020-10-16T10:26:34.888Z|5804857|dpif_netdev|ERR|error receiving data from
bond0: Message too long
2020-10-16T10:26:34.888Z|5804858|dpif_netdev|ERR|error receiving data from
bond0: Message too long
2020-10-16T10:26:34.888Z|5804859|dpif_netdev|ERR|error receiving data from
bond0: Message too long
2020-10-16T10:26:34.936Z|5804860|dpif_netdev|ERR|error receiving data from
bond0: Message too long
2020-10-16T10:26:34.936Z|5804861|dpif_netdev|ERR|error receiving data from
bond0: Message too long
2020-10-16T10:26:34.936Z|5804862|dpif_netdev|ERR|error receiving data from
bond0: Message too long
2020-10-16T10:26:34.947Z|5804863|dpif_netdev|ERR|error receiving data from
bond0: Message too long
2020-10-16T10:26:35.179Z|5804864|dpif_netdev|ERR|error receiving data from
bond0: Message too long


[root at host1 ~]# ovs-vsctl show
a861ee0a-595a-462a-8729-68de6a9026d8
    Manager "ptcp:6640:127.0.0.1"
        is_connected: true
    Bridge br0
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        datapath_type: netdev
        Port phy-br0
            Interface phy-br0
                type: patch
                options: {peer=int-br0}
        Port "bond0"
            Interface "bond0"
        Port br0
            Interface br0
                type: internal

[root at host1 ~]# ip link show bond0
10: bond0: <BROADCAST,MULTICAST,PROMISC,MASTER,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP mode DEFAULT group default qlen 1000
    link/ether e4:43:4b:ed:33:20 brd ff:ff:ff:ff:ff:ff

[root at host1 ~]# ovs-vsctl list interface bond0
_uuid               : 89181c9b-f123-48fb-97ed-3252e39f41ce
admin_state         : up
bfd                 : {}
bfd_status          : {}
cfm_fault           : []
cfm_fault_status    : []
cfm_flap_count      : []
cfm_health          : []
cfm_mpid            : []
cfm_remote_mpids    : []
cfm_remote_opstate  : []
duplex              : []
error               : []
external_ids        : {}
ifindex             : 10
ingress_policing_burst: 0
ingress_policing_rate: 0
lacp_current        : []
link_resets         : 0
link_speed          : []
link_state          : up
lldp                : {}
mac                 : []
mac_in_use          : "e4:43:4b:ed:33:20"
mtu                 : 1500
mtu_request         : 1500
name                : "bond0"
ofport              : 3
ofport_request      : []
options             : {}
other_config        : {}
statistics          : {collisions=0, rx_bytes=428325175126, rx_crc_err=0,
rx_dropped=3644084274, rx_errors=0, rx_frame_err=0, rx_over_err=0,
rx_packets=2667110862, tx_bytes=345128207711, tx_dropped=0, tx_errors=0,
tx_packets=563989135}
status              : {driver_name=bonding, driver_version="3.7.1",
firmware_version="2"}
type                : ""

[root at host2 ~]# ovs-vsctl list interface br0
_uuid               : c3df3fc1-b78d-464f-af39-1fee5aff12dc
admin_state         : down
bfd                 : {}
bfd_status          : {}
cfm_fault           : []
cfm_fault_status    : []
cfm_flap_count      : []
cfm_health          : []
cfm_mpid            : []
cfm_remote_mpids    : []
cfm_remote_opstate  : []
duplex              : full
error               : []
external_ids        : {}
ifindex             : 24
ingress_policing_burst: 0
ingress_policing_rate: 0
lacp_current        : []
link_resets         : 0
link_speed          : 10000000
link_state          : down
lldp                : {}
mac                 : []
mac_in_use          : "e4:43:4b:ec:c5:60"
mtu                 : 1500
mtu_request         : []
name                : br0
ofport              : 65534
ofport_request      : []
options             : {}
other_config        : {}
statistics          : {collisions=0, rx_bytes=0, rx_crc_err=0,
rx_dropped=0, rx_errors=0, rx_frame_err=0, rx_over_err=0, rx_packets=0,
tx_bytes=0, tx_dropped=1000184, tx_errors=0, tx_packets=0}
status              : {driver_name=tun, driver_version="1.6",
firmware_version=""}
type                : internal
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