I have observed that the igmp v2 fall-back doesn't work in RHEL3 kernels and RH doesn't want to add the sysctl/proc hook that will let you force it to v2 because it will change the kernel public ABI, see this bugzilla report, set to closed/wontfix:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=125570 Maybe more complaints will encourage them to at least fix the igmp fall-back functionality. ~Jason On Thu, 2004-09-09 at 13:50, Steve Gilbert wrote: > Whoops...I think I spoke too soon...maybe this is the issue after all... > > All of our /proc/net/igmp files report v2, but I just did a tcpdump, and > there is a lot of v3 on there. > > So I guess part of the bug in RHEL 3 is that is reports v2, but actually > talks v3? > > > Steve Gilbert > Unix Systems Administrator > [EMAIL PROTECTED] > > -----Original Message----- > From: Peter Schmid [mailto:[EMAIL PROTECTED] > Sent: Thursday, September 09, 2004 10:20 AM > To: Steve Gilbert > Cc: [email protected] > Subject: Re: [Ganglia-general] Any gmond issues on Opteron? > > Steve, > > There are some older posts from me and a few others who ran into this. > It's not the opteron per se.. but if you are running a OS that uses IGMP > v3... there is a bug in RHEL 3 that will not fail over to IGMP v2. > > Have your network people sniff the traffic to see if Ganglia is using > IGMP v3.. and either they can enable it..or in my case.. I have a IGMP > v2 node that is mute.. .and I use it to gather the infro and feed to > gmetad for the IGMP v3 nodes. > > HTH, > > Pete. > > On Thu, 9 Sep 2004, Steve Gilbert wrote: > > > Are there any known bugs or other issues with running gmond on AMD > > Opteron based systems? > > > > I just built gmond 2.5.6 from source on a small Opteron cluster...no > > errors or warnings or anything during the complile/install process. > > Gmond seems to be running fine, but none of my nodes can see each > other. > > gstat --all on each machine just shows itself...the others aren't even > > > showing up in the Dead list. > > > > Even though my network team can't find anything wrong, I suspect that > > I might be having another issue with multicast...but thought I should > > see if there are any Opteron issues. > > > > Thanks. > > > > Steve Gilbert > > Unix Systems Administrator > > [EMAIL PROTECTED] > > > > > > ------------------------------------------------------- > > This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 > > Project Admins to receive an Apple iPod Mini FREE for your judgement > > on who ports your project to Linux PPC the best. Sponsored by IBM. > > Deadline: Sept. 13. Go here: http://sf.net/ppc_contest.php > > _______________________________________________ > > Ganglia-general mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/ganglia-general > > > > -- > Peter Schmid > Technical Director > Logic Technology Inc. > GE Global Research Center > ITMS Engineering Systems Group > (518) 387-6903 > > > > ------------------------------------------------------- > This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 > Project Admins to receive an Apple iPod Mini FREE for your judgement on > who ports your project to Linux PPC the best. Sponsored by IBM. > Deadline: Sept. 13. Go here: http://sf.net/ppc_contest.php > _______________________________________________ > Ganglia-general mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/ganglia-general -- /------------------------------------------------------------------\ | Jason A. Smith Email: [EMAIL PROTECTED] | | Atlas Computing Facility, Bldg. 510M Phone: (631)344-4226 | | Brookhaven National Lab, P.O. Box 5000 Fax: (631)344-7616 | | Upton, NY 11973-5000 | \------------------------------------------------------------------/
