You should also read the following bugzillas: https://bugzilla.redhat.com/show_bug.cgi?id=426861 http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1282 They describe the same problem but recomment to set echo 1 > /proc/sys/xen/independent_wallclock on all dom0/Us. That did the trick for me.
Do you have any experiances in times the DomU is unreachable during livemig (for example when looking at the network). Depending on RAM we are loosing 20 Pings for 6GB RAM in DomU. I thinks this is very much isn't it? Thanks Marc. On Saturday 12 July 2008 00:23:30 Rich Graves wrote: > I think this is just a clock issue. Pings include timestamps and sequence > numbers, and /proc/sys/net/ipv4/icmp_ratelimit does as the name suggests. > > On the domU guest, echo 1 > /proc/sys/xen/independent_wallclock > > Do the live migration > > Then echo 0 > /proc/sys/xen/independent_wallclock > > I bet your clock and ping issues will both be resolved. > > Not yet tested (by me): does setting independent_wallclock on the dom0's do > anything? That would be nice, because then you wouldn't have to take the > time to ssh to guests before live migrates. (Anyone else have a good > workaround? Is there any way to give user-space a hint that the kernel is > starting a live migrate?) > > Frequently suggested but not desired (by me): use independent_wallclock all > the time, and run NTP in each domU. -- > Rich Graves http://claimid.com/rcgraves > Carleton.edu Sr UNIX and Security Admin > CMC135: 507-646-7079 Cell: 952-292-6529 > > _______________________________________________ > rhelv5-list mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/rhelv5-list -- Gruss / Regards, Marc Grimme Phone: +49-89 452 3538-14 http://www.atix.de/ http://www.open-sharedroot.org/ ** ATIX Informationstechnologie und Consulting AG Einsteinstr. 10 85716 Unterschleissheim Deutschland/Germany Phone: +49-89 452 3538-0 Fax: +49-89 990 1766-0 Registergericht: Amtsgericht Muenchen Registernummer: HRB 168930 USt.-Id.: DE209485962 Vorstand: Marc Grimme, Mark Hlawatschek, Thomas Merz (Vors.) Vorsitzender des Aufsichtsrats: Dr. Martin Buss _______________________________________________ rhelv5-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/rhelv5-list
