On Mon, Jul 30, 2012 at 01:41:20AM +0100, Pádraig Brady wrote: > Perhaps there is another issue with the scheduling of this?
That's likely. While I verified that the patch successfully fixed our connection timeout issue, I didn't look closely to see exactly where the behavior changed...and the connection that is standing out now belongs to nova-volume, whereas the timouts were happening with nova-compute. > How are you monitoring the connection? Our firewall is a Cisco ASDM (6.1). I'm monitoring the connection by running: show conn lport 5672 Which gets me: TCP compute-hosts:630 10.243.16.151:39756 controllers:621 openstack-controller:5672 idle 0:00:00 Bytes 6410148 FLAGS - UBOI TCP compute-hosts:630 10.243.16.151:39881 controllers:621 openstack-controller:5672 idle 0:00:04 Bytes 10470 FLAGS - UBOI TCP compute-hosts:630 10.243.16.151:39755 controllers:621 openstack-controller:5672 idle 0:00:02 Bytes 9717108 FLAGS - UBOI TCP compute-hosts:630 10.243.16.151:39736 controllers:621 openstack-controller:5672 idle 0:03:59 Bytes 36206 FLAGS - UBOI TCP compute-hosts:630 10.243.16.151:39752 controllers:621 openstack-controller:5672 idle 0:00:03 Bytes 4313246 FLAGS - UBOI Where the fields are: <protocol> <source interface> <source ip/port> <dest. interface> <dest ip/port> idle <idle time> ... The connection from port 39736 on the compute host (which is the nova-volume process) regularly cycles up to 5 minutes of idle time before resetting to 0 (and the firewall sets the idle time to zero whenever any traffic passes across the connection). And indeed, if I run a packet trace on this connection, I can verify that packets are only showing up at five-minute intervals. -- Lars Kellogg-Stedman <l...@seas.harvard.edu> | Senior Technologist | http://ac.seas.harvard.edu/ Academic Computing | http://code.seas.harvard.edu/ Harvard School of Engineering and Applied Sciences | _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp