[ClusterLabs] resource grouping

Dennis Jacobfeuerborn dennisml at conversis.de
Tue Jun 9 18:17:43 EDT 2015

is there a way to group resources without also adding implicit ordering?

My use-case is that I want to set up a redundant NFS system that uses
drbd to mirror a few volumes. These volumes are then mounted and exported.
The problem is that if I have e.g. 10 Filesystem resources I currently
have to both a colocation and an order constraint for *each* filesystem
which is quite cumbersome and as a result also prone to errors.

What I'd like to be able to do is to put all filesystem resources in a
group and then only create one colocation and order contraint each
between the drbd clone resource and this filesystem resource group.
Since right now grouping implies ordering that is somewhat inefficient
because the filesystems cannot be mounted in parallel when grouped.

Is there a way to accomplish what I'm trying to do in pacemaker/pcs?


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