Perhaps the interface creating the packet has the wrong MTU? For instance, a VM is using MTU 1500 but then packets gets encapsulated?
fbl On Mon, Oct 19, 2020 at 09:59:13PM +0700, KhacThuan Bk wrote: > 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@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@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@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@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 > _______________________________________________ > discuss mailing list > disc...@openvswitch.org > https://mail.openvswitch.org/mailman/listinfo/ovs-discuss -- fbl _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss