I don't know if I mentioned that to the list, elevator=deadline and rising the THRESHOLD to 14 solved my self-fencing issues.
(We'll see what happens under a possibly extreme load). Michael. --- Dr. Michael Weller ITZ Informationstechnologie GmbH Consulting/Systemengineering Bismarckstrasse 57 D-45128 Essen Phone Office +49 201 24714 28 FAX Office +49 201 24714 33 Phone Mobile +49 172 2178078 E-Mail mailto:[EMAIL PROTECTED] > -----Ursprüngliche Nachricht----- > Von: [EMAIL PROTECTED] [mailto:ocfs2-users- > [EMAIL PROTECTED] Im Auftrag von Zunker, Christian > Gesendet: Dienstag, 18. April 2006 15:21 > An: [email protected] > Betreff: Re: [Ocfs2-users] heartbeat write timeout > > Hi, > > I experienced the same problems. The elevator=deadline parameter didn't > help. But increasing the threshold to 60 did it. I think you could > decrease the threshold, but didn't test it. In another posting, it is said > to take a timeout between 60 and 90 seconds. This would mean a threshold > between 31 and 46. > > I'll test this later. > > Best regards, > Christian > > > -----Ursprüngliche Nachricht----- > Von: [EMAIL PROTECTED] [mailto:ocfs2-users- > [EMAIL PROTECTED] Im Auftrag von Weller, Michael > Gesendet: Sonntag, 2. April 2006 14:18 > An: Silviu Marin-Caea; [email protected] > Betreff: Re: [Ocfs2-users] heartbeat write timeout > > Thx for the hints, I'll try that. > > With regards to the updates, while I generally agree, I can't update the > kernel here, because we'll loose vendor warranty in that case. I know this > is an odd concept, but that's how it works. We'll even loose Oracle > support because the kernel update would void HP SAN-support. > > I mentioned SAN Failover, which for example does not work with current > kernel and current (even the not so current HP checked variant) Qlogic > driver. > > Anyway, I'll try your suggestions on monday and drop the list a note if it > worked. > > Thanks, > Michael. > > --- > > Dr. Michael Weller > > ITZ Informationstechnologie GmbH > Consulting/Systemengineering > Bismarckstrasse 57 > D-45128 Essen > > Phone Office +49 201 24714 28 > FAX Office +49 201 24714 33 > Phone Mobile +49 172 2178078 > E-Mail mailto:[EMAIL PROTECTED] > > -----Ursprüngliche Nachricht----- > > Von: [EMAIL PROTECTED] [mailto:ocfs2-users- > > [EMAIL PROTECTED] Im Auftrag von Silviu Marin-Caea > > Gesendet: Sonntag, 2. April 2006 08:26 > > An: [email protected] > > Betreff: Re: [Ocfs2-users] heartbeat write timeout > > > > On Saturday 01 April 2006 22:36, Weller, Michael wrote: > > > > > we are bound to SLES9SP3 (and EXACTLY that, nothing less, not a patch > > > more) > > > > Having latest updates does not hurt, on the contrary, it helps. For > > example, > > the latest kernel has OCFS2 1.1.8, while the kernel from SP3 has 1.1.7. > > There are a number of bugfixes. > > > > SLES updates do really have a purpose. Apply them after testing in a > > non-production system. > > > > > It locks up immediately. Definitely nothing like a 12s timeout > expires. > > > > It just looks like it's immediate, actually, the 12s do expire. > > > > > You mention a FAQ regarding some config option which I didn't come > > > across up to now, where can I find it? > > > > /boot/grub/menu.lst > > > > change elevator=cfq to elevator=deadline > > > > http://oss.oracle.com/projects/ocfs2/ > > scroll down, look at the red text > > > > > Which options would you recommend to fix the problem or at least make > > > locks much less likely. > > > > You could also increase the timeout: > > > > /etc/sysconfig/o2cb > > > > # O2CB_HEARTBEAT_THRESHOLD: Iterations before a node is considered dead. > > O2CB_HEARTBEAT_THRESHOLD=16 > > > > > > _______________________________________________ > > Ocfs2-users mailing list > > [email protected] > > http://oss.oracle.com/mailman/listinfo/ocfs2-users > > > > _______________________________________________ > Ocfs2-users mailing list > [email protected] > http://oss.oracle.com/mailman/listinfo/ocfs2-users
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