This was VERY helpful, thanks a lot! Cheers, Frank
2010/3/10 Sunil Mushran <sunil.mush...@oracle.com>: > To get this feature, one needs both a kernel >= 2.6.28 and a > functioning userspace cluster stack. > > ocfs2 1.4 on (rh)el5/sles10 does not satisfy either of the two. > > As of now, there are two such stacks. Pacemaker from Novell and > the "new" CMAN (new is my term... unsure how RH will be marketing > it) from Red Hat. > > For Enterprise kernels, currently only SLES11 (HAE) satisfies both > requirements. (RH)EL6, when it ships, should also offer the same. > > For non-enterprise distros, you will have to see the state of > the clusterstack in that distro. > > For Fedora, the upcoming FC13 will be your best bet. > For ubuntu, the upcoming 10.04 looks promising. > https://wiki.ubuntu.com/ClusterStack/LucidTesting#Pacemaker,%20drbd8%20and%20OCFS2%20or%20GFS2 > > Sunil > > Frank Lahm wrote: >> >> Hi list, >> >> does latest ocfs2 support POSIX locks or doesn't it? The infos I've >> found contradict each other, according to [1] it's not supported, but >> according to [2] it's mentioned as working since kernel >> 2.6.28: >> ---8--- >> Cluster aware POSIX file locks (fcntl(), lockf()) >> >> Required Kernel: Linux 2.6.28 >> Required Tools: Any - userspace cluster stack required >> POSIX locks are now cluster aware. Locks taken on one node will >> interact with those taken on another node. Due to the group >> communication required to make these locks coherent, a userspace >> cluster is required. >> ---8--- >> >> Cheers, Frank >> >> [1] >> <http://oss.oracle.com/projects/ocfs2/dist/documentation/v1.4/ocfs2-1_4-usersguide.pdf>: >> p.12: "(Note: Support for clustered POSIX file locks, also known as >> lockf(3) or fcntl(2), has not yet been added. We hope to have that >> available in the near term.)" >> [2] <http://oss.oracle.com/osswiki/OCFS2/NewFeaturesList> >> >> _______________________________________________ >> Ocfs2-users mailing list >> Ocfs2-users@oss.oracle.com >> http://oss.oracle.com/mailman/listinfo/ocfs2-users > > _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users