Hi again, and as you mention GFS2 and Lustre: I recently test with GFS2 on RHEL6 same way with pacemaker/corosync and only one cluster level for GFS2 and RHEL6, as documented. It works much better than ocfs2 stack . The only problem is when a node has been fenced for example, when you want to reboot the node and start again pacemaker, you have to stop IO on the GFS2 FS on the healthy node, otherwise the start fails and you have to cleanup the resource to make it ... clean, but it works and I have not faced robustness problems. The point is that GFS2 was (a year ago) about 10 times less efficient than ocfs2 with regards to IO performances, but I have not re-tested it recently about performances. And about Lustre, I don't think Lustre is the good FS to set in place of GFS2 or OCFS2.
Alain De : alain.mou...@bull.net A : General Linux-HA mailing list <linux-ha@lists.linux-ha.org> Date : 26/10/2011 15:03 Objet : Re: [Linux-HA] PCMK + OCFS2 Envoyé par : linux-ha-boun...@lists.linux-ha.org Hi Nick I was on RHEL6, and rebuild also the packages, and even took the last releases available for anything around ocfs2 because none of them was really "robust", all versions were not enough reliable to be used in real situation. Take care that it seems to work for a while, just a few test like this, than like that ... but there was always a test which make all the cluster unavailable ... that what I'ma talking about lack robustness. Thanks to let us know if it is really robust at the end of your validation ... Alain De : Nick Khamis <sym...@gmail.com> A : General Linux-HA mailing list <linux-ha@lists.linux-ha.org> Date : 26/10/2011 14:49 Objet : Re: [Linux-HA] PCMK + OCFS2 Envoyé par : linux-ha-boun...@lists.linux-ha.org Hello Alain, >>last fall 2010, and this stack was definitely not working on RH. Many >>conflicts If you were using RH 5, the kernel was too old, and therefore had problems with the ocfs2.pcmk stack. In RH6 I have read this is working. I will keep everyone updated I'm compiling everything from source (vanilla kernel, pcmk stack, ocfs2, dlm and fence from cman). I have been lucky so far, and now I will attempt at pcmk.ocfs2. The reason I am building everything from scratch, is for the nose bleed for one ;), and to be more portable. With the inclusion of some distro dependencies, I can easily move from Debian to Gentoo, to SLES RH etc... Or can I? One this is for sure, the difficulties I am going through now, will only get easier with every migration. The configs will always come with me. If I do hit a wall with ocfs2.pcmk, are the alternatives a better option that will allow me to complete this endevour? Is GFS2 or Lusture better supported, and or more stable? Maybe I should create a Wiki for ocfs2.pcmk from source on Debian, Gentoo, RH, SLES etc... Thanks in Advance, Nick from Toronto. _______________________________________________ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
