On Sat, Mar 3, 2012 at 6:55 PM, William Seligman <selig...@nevis.columbia.edu> wrote: > On 3/3/12 12:03 PM, emmanuel segura wrote: >> >> are you sure the exportfs agent can be use it with clone active/active? > > > a) I've been through the script. If there's some problem associated with it > being cloned, I haven't seen it. (It can't handle globally-unique="true", > but I didn't turn that on.)
It shouldn't have a problem with being cloned. Obviously, cloning that RA _really_ makes sense only with the export that manages an NFSv4 virtual root (fsid=0). Otherwise, the export clone has to be hosted on a clustered filesystem, and you'd have to have a pNFS implementation that doesn't suck (tough to come by on Linux), and if you want that sort of replicate, parallel-access NFS you might as well use Gluster. The downside of the latter, though, is it's currently NFSv3-only, without sideband locking. > b) I had similar problems using the exportfs resource in a primary-secondary > setup without clones. > > Why would a resource being cloned create an ordering problem? I haven't set > the interleave parameter (even with the documentation I'm not sure what it > does) but A before B before C seems pretty clear, even for cloned resources. As far as what interleave does. Suppose you have two clones, A and B. And they're linked with an order constraint, like this: order A_before_B inf: A B ... then if interleave is false, _all_ instances of A must be started before _any_ instance of B gets to start anywhere in the cluster. However if interleave is true, then for any node only the _local_ instance of A needs to be started before it can start the corresponding _local_ instance of B. In other words, interleave=true is actually the reasonable thing to set on all clone instances by default, and I believe the pengine actually does use a default of interleave=true on defined clone sets since some 1.1.x release (I don't recall which). Bill, seeing as you've already pastebinned your config and crm_mon output, could you also pastebin your whole CIB as per "cibadmin -Q" output? Thanks. Cheers, Florian -- Need help with High Availability? http://www.hastexo.com/now _______________________________________________ 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
