Hello,
I've a problem, all my ovirt hosts and vms are linked with a bonding mode 1（Active-Backup）2x10Gbps
ovirt version：4.3
topology：
----------eno2
vm----------ovirtmgmt------bond0-----------eno1
ifcfg-bond0：
# Generated by VDSM version 4.30.9.1
DEVICE=bond0
BONDING_OPTIOS='mode=1 miion=100'
BRIDGE=ovirtmgmt
MACADDR=a4:be:26:16:e9:b2
ONBOOT=yes
MTU=1500
DEFROUTE=no
NM_CONTROLLER=no
IPV6INIT=no
ifcfg-eno1:
# Generated by VDSM version 4.30.9.1
DEVICE=eno1
MASTER=bond0
SLAVE=yes
ONBOOT=yes
MTU=1500
DEFROUTE=no
NM_CONTROLLER=no
IPV6INIT=no
ifcfg-eno2:
# Generated by VDSM version 4.30.9.1
DEVICE=eno2
MASTER=bond0
SLAVE=yes
ONBOOT=yes
MTU=1500
DEFROUTE=no
NM_CONTROLLER=no
IPV6INIT=no
ifcfg-ovirtmgmt:
# Generated by VDSM version 4.30.9.1
DEVICE=ovirtmgmt
TYPE=Brodge
DELAY=0
STP=off
ONBOOT=yes
IPADDR=x.x.x.x
NEYMASK=255.255.255.0
GATEWAY=x.x.x.x
BOOTPROTO=none
MTU=1500
DEFROUTE=yes
NM_CONTROLLER=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
cat /proc/net/bonding/bond0
Ethernet Chanel Bonding Driver:v3.7.1(April 27, 2011)
Bonding Mode:fault-tolerance(active-ackup)
Primary Slave:none
Currently Active Slave:eno1
MII Status:up
MII Polling Intercal (ms):100
Up Delay (ms) : 0
Down Delay (ms) : 0
Slave Interface :eno1
MII Status:up
Speed : 10000 Mbps
Link Failure Count : 0
Permanent HW addr :a4:be:26:16:e9:b2
Slave queue ID: 0
Slave Interface :eno2
MII Status:up
Speed : 10000 Mbps
Link Failure Count : 0
Permanent HW addr :a4:be:26:16:e9:b2
Slave queue ID: 0
ping vm from different subnet.
Eveything is okay if I don't change bond link interface。When I unplug Currently Active Slave eno1,bond link change to eno2 as expected but vm become unreachable until external physical switch MAC Table ageing time expired.It seems that vm doesn't sent gratuitous ARP when bond link change. How can I fix if?
There is no reason for the VM OS to send anything as it is unaware of the change you have done in the network.
It should work fine if you perform this operation from oVirt Management, as it will cause the interfaces to be set down and up again (I would expect the links to go down as a result), causing the switch ports to flush its mac address table.
vm os is Centos 7.5
ovirt version 4.2 also tested.
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