On Thu, Jan 13, 2011 at 08:09:13AM -0700, Steven Dake wrote: > On 01/13/2011 08:03 AM, Lars Marowsky-Bree wrote: > > On 2010-12-01T14:18:25, Steven Dake <[email protected]> wrote: > > > >> Corosync 1.3.0 is available for immediate download from our website. > >> This version brings many enhancements to the software. The two most > >> visible enhancements are UDPU transport mode and the > >> cpg_model_initialize api call. The UDPU transport omde allows Corosync > >> to run over basic UDP transport without the need for multicast support > >> in the cluster switching environment. The API addition allows for > >> correct operation of cluster file systems such as gfs2 and ocfs2. > >> > > > > Hi Steven, > > > > can you elaborate please - how are current cluster file system > > implementations not "correct", or is this a mere API enhancement? > > > > Dave has more details, but we needed to add an API to give ring id > information to fenced to prevent fenced from entering a stuck state. > The conditions leading up to the problem are difficult for me to recall, > but it did happen in community testing as well as internal validation. > I recommend pinging dct offline if you need more information. (There is > a fenced patch that goes with this, and perhaps something else).
Steve is explaining the addition of cpg_totem_confchg_fn: http://www.corosync.org/git/?p=corosync.git;a=commitdiff;h=e8b143595cd3b3827c044164873c7825bc65b726 which I used here: http://git.fedorahosted.org/git/?p=cluster.git;a=commitdiff;h=6dd65cf344d05730cbccb99ce5265e84f762bfde after asking for here: https://lists.linux-foundation.org/pipermail/openais/2009-September/013022.html I wouldn't explain it in terms of clusterfs's or fenced. It's really addressing a shortcoming in the corosync API's. The problem was that it was impossible to correlate a callback from the cpg library with a callback from another library for the same underlying event. Dave _______________________________________________ Openais mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/openais
