[ovs-discuss] Flow Expiration returning zeros for byte/packet counts
David Erickson
derickso at stanford.edu
Wed Nov 11 00:25:30 UTC 2009
Hi all,
At Justin's request I am forwarding this bug report along to this email
address. I am seeing a problem where flow expirations are consistently
returning zeros for packet/byte counts on a specific flow I am
inserting. I am using OVS build 1497 that Justin gave me today. The
flow has the characteristics:
port0002:vlanffff mac7a:4a:0f:e9:1b:bd->22:db:ed:04:cb:a4 proto0800
ip10.79.2.12->10.79.2.13 port47253->80
and the reverse flow:
port0001:vlanffff mac22:db:ed:04:cb:a4->7a:4a:0f:e9:1b:bd proto0800
ip10.79.2.13->10.79.2.12 port80->47253
This is a wget from a vm in xen to another vm in another xen instance,
of a ~250 MB file. I am throttling this flow via a wget command line
option to 10Mbps so it takes ~30s. While the flow is running, every 10s
I send a flow stats request, as an exact match on the flow, and the
reported byte and packet counts are correct. However when the flow
expires, the byte/packet counter are zero.
To confuse things further, it does appear that I get flow expirations
with correct byte/packet counters for ARP packets, however upon further
inspection of my log file, it also shows dhcp requests/replies (ip port
67->68 and vice versa), and they are showing zeros. This may be an
issue with anything that is IP not getting correct expirations?
Thanks,
David
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