On 10/1/07, Kelly Byrd <[EMAIL PROTECTED]> wrote: > > >> I have a drbd master/slave resource (ms-drbd1), and then a group > >> (group_vm1). The group contains and filesystem resource (vm1-fs) and my > >> VM > >> (vm1-vm) resource. I have an rsc_order contraint saying group_vm1 should > >> only run where ms-drbd1 has been promoted. I also have a rsc_colocation > >> constraint saying group_vm1 follows ms-drbd1. > > > > You mean the other way around: exchange rsc_order and > > rsc_colocation. > > > > I used this XML from the howto page: > <rsc_order id="drbd0_before_fs0" from="fs0" action="start" to="ms-drbd0" > to_action="promote"/> > <rsc_colocation id="fs0_on_drbd0" to="ms-drbd0" to_role="master" > from="fs0" score="infinity"/> > > > >> Finally I have a location > >> constaint saying ms-drbd1 prefers node1. > >> > >> When testing this with two VMs (add ms-drbd2 and group_vm2, prefering > >> node2), things don't always work out as planned. Sometimes, with only > >> one > >> node running, if I "/etc/init.d/heartbeat start" on node1, ms-drbd1 and > >> group_vm1 will try to migrate over to node1, fail then return back to > >> node2. It's not clear to me what's failing. > > > > What do the logs say? > > > > >> Should I be grouping these differently? > > > > The config looks ok to me. > > > > I have the impression that I can't put the master/slave drbd resource in > the group with the other two, because it's master/slave-ness isn't the > same as the other two start/stop resources. Is this true?
groups can not contain clones or master/slave resources (which are just a special kind of clone) you can however clone a group > Basically, I'm looking for how to scale this out easily without a ton of > XML entries for the 22 things I'm managing. it depends what is scaling up... the number of m/s or the number of items that need to run on the master _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
