2.6.18-194.3.1.el5.028stab069.6xen is a very old version. Could you
update it?
On 03/14/2012 10:28 AM, Maoke wrote:
sorry if this is more of a Xen problem.
we are running openvz in Xen PVs (kernel
2.6.18-194.3.1.el5.028stab069.6xen), and occasionally the network of a
PV, as well as the PV's hosted containers, at a virtual interface is
lost. sometimes restarting the network can solve the problem but in
most cases we have to restart the PV. the PVs another virtual
interface was working and other PVs and the HV keeps working.
detailed observation through tcpdump at the trouble time shows:
1. the inbound traffics can be delivered correctly through eth0 of the
PV until venet0;
2. it looks the venet0 is also correctly functioned because TCP sync
may get response from container and this sync ack can be seen at venet0;
3. but at the eth0 of PV, we only have seen the TCP sync request
towards the containers while the sync ack is missing, thus TCP state
of the container's application remains SYNC_RECV
4. if ping the PV, at the eth0, we only have seen the ICMP echo
requests but the replies are missing.
we didn't encounter the same problem when those openvz stuffs were
running over physical machine instead of xen.
does anyone have any hints or ideas? thanks a lot in advance.
- maoke
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