The config details:

root@lv426 network-scripts]# cat ifcfg-bond0

# Generated by VDSM version 4.19.31-1.el7.centos

DEVICE=bond0

BONDING_OPTS='mode=4 lacp_rate=1 miimon=100 xmit_hash_policy=2'

BRIDGE=ovirtmgmt

ONBOOT=yes

MTU=1500

DEFROUTE=no

NM_CONTROLLED=no

IPV6INIT=no


[root@lv426 network-scripts]# cat ifcfg-eno1

# Generated by VDSM version 4.19.31-1.el7.centos

DEVICE=eno1

MASTER=bond0

SLAVE=yes

ONBOOT=yes

MTU=1500

DEFROUTE=no

NM_CONTROLLED=no

IPV6INIT=no


[root@lv426 network-scripts]# cat ifcfg-enp11s0

# Generated by VDSM version 4.19.31-1.el7.centos

DEVICE=enp11s0

MASTER=bond0

SLAVE=yes

ONBOOT=yes

DEFROUTE=no

NM_CONTROLLED=no

IPV6INIT=no


[root@lv426 network-scripts]# cat ifcfg-enp2s0f0

# Generated by VDSM version 4.19.31-1.el7.centos

DEVICE=enp2s0f0

MASTER=bond0

SLAVE=yes

ONBOOT=yes

MTU=1500

DEFROUTE=no

NM_CONTROLLED=no

IPV6INIT=no


[root@lv426 network-scripts]# cat ifcfg-enp2s0f1

# Generated by VDSM version 4.19.31-1.el7.centos

DEVICE=enp2s0f1

MASTER=bond0

SLAVE=yes

ONBOOT=yes

MTU=1500

DEFROUTE=no

NM_CONTROLLED=no

IPV6INIT=no


[root@lv426 network-scripts]# cat ifcfg-ovirtmgmt 

# Generated by VDSM version 4.19.31-1.el7.centos

DEVICE=ovirtmgmt

TYPE=Bridge

DELAY=0

STP=off

ONBOOT=yes

BOOTPROTO=dhcp

MTU=1500

DEFROUTE=yes

NM_CONTROLLED=no

IPV6INIT=no

DNS1=10.100.100.1

DNS2=10.1.2.2


[root@lv426 network-scripts]# cat /proc/net/bonding/bond0 |grep Slave

Slave Interface: eno1

Slave queue ID: 0

Slave Interface: enp2s0f0

Slave queue ID: 0

Slave Interface: enp2s0f1

Slave queue ID: 0

Slave Interface: enp11s0

Slave queue ID: 0


As you can see by the above all 4 interfaces are configured and up properly and working.

I've configured them using the command:

 vdsClient -s 0 setupNetworks bondings='{bond0:{nics:eno1+enp11s0+enp2s0f0+enp2s0f1,options:mode=4 lacp_rate=1 miimon=100 xmit_hash_policy=2}}'


It's all good.

But when I reboot interface3 enp11s0 is not part of the bond, 

[root@lv426 ~]# cat /proc/net/bonding/bond0 |grep Slave

Slave Interface: eno1

Slave queue ID: 0

Slave Interface: enp2s0f0

Slave queue ID: 0

Slave Interface: enp2s0f1

Slave queue ID: 0


And looks like it's had it's bonding config removed b y VDSM.

[root@lv426 network-scripts]# cat ifcfg-enp11s0 

# Generated by VDSM version 4.19.31-1.el7.centos

DEVICE=enp11s0

ONBOOT=yes

MTU=1500

NM_CONTROLLED=no


If I re-=run the vdsClient command and if down/ifup the interface it happily rejoins the bond and carries on working perfectly.

For the life of me I can't figure out what I'm missing / done wrong.