Thanks Jeff for the reply. It looks like bridge created by xen network-script is somewhat different comparing to bridge created using ifcfg-* (Referring to http://www.cyberciti.biz/faq/tag/full-bridge/)
Wondering why the network-script works (assuming no interference to cman) when executed as root after login and doesnot work when used with xend-config. Might be a question to the xen users . Thanks Paras. On Mon, Aug 30, 2010 at 12:24 PM, Jeff Sturm <[email protected]> wrote: > The network-bridge script does some pretty horrific things to networking > while it starts. I’m not surprised if the interruption is enough to cause > CMAN to fail. > > > > We avoided this by not using Xen’s network-bridge utility. Just configure > your physical interfaces and bridge devices in > /etc/sysconfig/network-scripts, and specify a bridge name in each > /etc/xen/<domU> script. (In xend-config.sxp you can set network-script to > “/bin/true”. Just remember to also turn on IP forwarding.) > > > > The advantages of doing it this way are that you get tighter control over > your host networking, and starting/stopping xend won’t interrupt > networking. (The main disadvantage is that the networking configuration is > harder to port to a non-Red Hat OS, but if you already need clustering that > probably doesn’t matter.) > > > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Paras pradhan > *Sent:* Monday, August 30, 2010 12:43 PM > *To:* linux clustering > *Subject:* [Linux-cluster] cluster and xen bridge issue > > > > Hi, > > > > I have a three node red hat cluster (for xen virualization) and everything > is running great until I add a 2nd interface and 2nd bridge. > > > > This is how I added the 2nd bridge > http://toic.org/2008/10/06/multiple-network-interfaces-in-xen/ > > > > After reboot, cluster comes up fine and when xend comes up, cman dies. > > > > Log (from other node): > > > > -- > > Aug 27 15:13:23 cvtst2 openais[6343]: [TOTEM] Retransmit List: 52 53 > > Aug 27 15:13:23 cvtst2 last message repeated 3 times > > Aug 27 15:13:23 cvtst2 openais[6343]: [TOTEM] Retransmit List: 53 > > Aug 27 15:13:23 cvtst2 openais[6343]: [TOTEM] Retransmit List: 53 > > Aug 27 15:13:59 cvtst2 openais[6343]: [TOTEM] FAILED TO RECEIVE > > Aug 27 15:13:59 cvtst2 openais[6343]: [TOTEM] entering GATHER state from > 6. > > Aug 27 15:13:59 cvtst2 openais[6343]: [TOTEM] FAILED TO RECEIVE > > Aug 27 15:13:59 cvtst2 openais[6343]: [TOTEM] entering GATHER state from > 6. > > Aug 27 15:14:00 cvtst2 openais[6343]: [TOTEM] FAILED TO RECEIVE > > --- > > > > But if I execute as root (for 2nd bridge) : /etc/xen/scripts/network-bridge > start vifnum=1 netdev=eth1 bridge=xenbr1, > I am not seeing any issue. > > > > It looks like after the cman started , xend is trying to reconfigure the > both bridges and cluster dies. > I hope I explained properly. > Need some help > Thanks > Paras. > > > > > > -- > Linux-cluster mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/linux-cluster >
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