I have Centos 7 with openvswitch 2.9.0. The server has 4 ports in an lacp bond
(called allbond) connected to a set of mlagged arista switches. Here's the
config
ovs-vsctl list port allbond
_uuid : 9f224f2d-8bb1-4cfd-84e2-d60c6d973a7a
bond_active_slave : "90:e2:ba:d6:1c:44"
bond_downdelay : 0
bond_fake_iface : false
bond_mode : balance-tcp
bond_updelay : 40000
cvlans : []
external_ids : {}
fake_bridge : false
interfaces : [61b9a345-2f3d-4127-b9cd-eaca8a749574,
89ce3480-d62d-4291-9a84-bdf711016793, 941c9393-1021-490c-84ac-311250ba0343,
dc49ffd3-c259-43b6-8072-2ce12c52d1b1]
lacp : active
mac : []
name : allbond
other_config : {}
protected : false
qos : []
rstp_statistics : {}
rstp_status : {}
statistics : {}
status : {}
tag : []
trunks : []
vlan_mode : []
---- allbond ----
bond_mode: balance-tcp
bond may use recirculation: yes, Recirc-ID : 3
bond-hash-basis: 0
updelay: 40000 ms
downdelay: 0 ms
next rebalance: 3229 ms
lacp_status: negotiated
lacp_fallback_ab: false
active slave mac: 90:e2:ba:d6:1c:44(eth5)
slave eth3: enabled
may_enable: true
hash 50: 1 kB load
hash 162: 1 kB load
hash 170: 1 kB load
slave eth4: enabled
may_enable: true
hash 123: 4 kB load
hash 221: 12 kB load
slave eth5: enabled
active slave
may_enable: true
hash 94: 1 kB load
hash 177: 1 kB load
hash 245: 1 kB load
slave eth6: enabled
may_enable: true
hash 97: 46 kB load
As you can see updelay is set to 40 seconds. I go to the switch and shutdown
the port for eth6. It's immediately pulled from the bond. I then clear the
switch counters and wait a few minutes. I would expect when the port is "no
shutdown" that 40 seconds will go by before openvswitch brings it back into the
bond. But that doesn't happen.
2018-10-02T15:31:32.885Z|00349|bond|INFO|interface eth6: link state down
2018-10-02T15:31:32.885Z|00350|bond|INFO|interface eth6: disabled
2018-10-02T15:35:45.861Z|00352|bond|INFO|interface eth6: link state up
2018-10-02T15:35:45.861Z|00353|bond|INFO|interface eth6: enabled
2018-10-02T15:35:51.286Z|00354|bond|INFO|bond allbond: shift 93kB of load (with
hash 97) from eth3 to eth6 (now carrying 6kB and 93kB load, respectively)
Immediately after link is re-established the port (eth6) is enabled again and
traffic as shown in the switch counters begins to flow again. It feels like I'm
doing something wrong but I've googled for hours and can't find anything that
explains why the bond_updelay is being ignored.
Thanks,
Daniel
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