On 2016-03-16 16:35, Andy Zhou wrote:
On Wed, Mar 16, 2016 at 4:00 PM, Ramu Ramamurthy <
srama...@linux.vnet.ibm.com> wrote:
On 2016-03-15 11:16, Andy Zhou wrote:
On Mon, Mar 14, 2016 at 12:11 PM, Ramu Ramamurthy <
srama...@linux.vnet.ibm.com> wrote:
When a logical switch (localnet) has lots of ports on a hypervisor,
I find that broadcast packets from one of the ports is only
forwarded to
a subset of the other ports, and the kernel module shows the message
-
"kernel: openvswitch: ovs-system: deferred action limit reached,
drop
recirc action"
There appears to be a discussion of a related problem and a possible
patch
here:
http://openvswitch.org/pipermail//discuss/2015-October/019168.html
http://openvswitch.org/pipermail//discuss/2015-October/019198.html
Thanks for the bug report.
Those patches are now dropped since I have not heard back from the
bug
reporter.
I have just posted a potential fix as RFC at:
http://openvswitch.org/pipermail/dev/2016-March/067794.html
Would you please test it against your set up? Thanks.
I tried the patch in the link above on devstack-with-ovn. The
openvswitch
kernel module
is rebuilt with the above patch, I find that there is a system hang,
when I send the broadcast packet. The same test earlier showed "drop
recirc action" errors.
Ahh, I see. Would you please try the following incremental change?
Thanks.
diff --git a/datapath/actions.c b/datapath/actions.c
index 3b85eaf..5e81a38 100644
--- a/datapath/actions.c
+++ b/datapath/actions.c
@@ -116,7 +116,7 @@ static struct deferred_action
*action_fifo_get(struct
action
static struct deferred_action *action_fifo_put(struct action_fifo
*fifo)
{
- if (fifo->head >= fifo->size - 1) {
+ if (fifo->head >= fifo->size / sizeof(*fifo->fifo) - 1) {
/* out of fifo buffer space, try to allocate a new fifo
* buffer. */
struct deferred_action *new_fifo;
thanks Andy, That worked !, I was able to broadcast (udp-dhcp-discovers)
to 100 ports and
saw no "drop recirc action" errors.
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