<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I noticed this over the weekend as well. I believe this is OVS trying to manipulate the tap device that is created for quantum-dhcp-agent. If you have namespaces enabled, the tap device is not configurable from outside the netns, and that's what OVS is trying to do repeatedly.<div><br></div><div>I'm not sure if it's harmful or not - it doesn't appear to be. The DHCP agent is working just fine.</div><div><br></div><div>Cheers,</div><div>Jim Chamings</div><div><br></div><div><br></div><div><div><div>On Aug 12, 2013, at 7:41 AM, Samuel Winchenbach <<a href="mailto:swinchen@gmail.com">swinchen@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><div dir="ltr"><div class="gmail_default" style="font-family:'courier new',monospace">Hi all, I posted a message a while ago in the openstack@ mailing list about some warnings I am getting with openvswitch.</div><div class="gmail_default" style="font-family:'courier new',monospace">
<br></div><div class="gmail_default" style="font-family:'courier new',monospace">This is the post I made: <a href="https://lists.launchpad.net/openstack/msg24745.html" style="font-family:arial">https://lists.launchpad.net/openstack/msg24745.html</a></div>
<div class="gmail_default" style="font-family:'courier new',monospace"><br></div><div class="gmail_default" style="font-family:'courier new',monospace">Does the first response make sense? Are other people seeing warnings such as:</div>
<div class="gmail_default" style="font-family:'courier new',monospace"><br></div><div class="gmail_default"><div class="gmail_default"><font face="courier new, monospace">/var/log/openvswitch/ovs-vswitchd.log:Aug 12 10:33:36|80611|netdev|WARN|Dropped 159 log messages in last 12 seconds (most recently, 1 seconds ago) due to excessive rate</font></div>
<div class="gmail_default"><font face="courier new, monospace">/var/log/openvswitch/ovs-vswitchd.log:Aug 12 10:33:36|80612|netdev|WARN|failed to get flags for network device tap37874e8e-0e: No such device</font></div><div style="font-family:'courier new',monospace">
<br></div><div style="font-family:'courier new',monospace"><br></div><div style="font-family:'courier new',monospace">When using ovs with grizzly?</div><div style="font-family:'courier new',monospace">
<br></div><div style="font-family:'courier new',monospace">Thanks,</div><div style="font-family:'courier new',monospace">Sam</div></div></div>
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