[ovs-discuss] OVS 2.3.2 hung - no arp with lacp bond

Varun ez2517 at gmail.com
Fri Nov 18 07:25:13 UTC 2016


Hello

I observed an issue with OVS 2.3.2 on CentOS 6.6 KVM , kernel
2.6.32-504.el6,   with 25 tenant VMs where it stopped responding to ARPs
all of a sudden. There are 2 OVS bonds in balance-tcp mode in this
configuration.  OVS service was restarted to resolve this state .

Below logs were repeated many times over

2016-10-01T12:37:32.480Z|1786606|poll_loop|INFO|wakeup due to 0-ms timeout
at *lib/seq.c*:179 (97% CPU usage)

2016-10-01T23:59:02.480Z|1810465|poll_loop|INFO|wakeup due to 0-ms timeout
at *ofproto/ofproto-dpif.c*:1503 (99% CPU usage)

2016-10-02T00:33:32.481Z|1811683|poll_loop|INFO|wakeup due to [POLLIN] on
fd 10 (<->/var/run/openvswitch/db.sock) at *lib/stream-fd-unix.c*:124 (97%
CPU usage)

Is this related to revalidator thread  or probably due to high traffic
volume ?   Having said that , there has no increase in traffic volume to
the tenant VMs in the days leading up to the OVS hung state or after.
Hypervisor cpu and memory usage has been at normal levels as well.

Has anyone else observed similar issues ? Any insight or comments would be
really appreciated.

thanks.
--
vkd
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