Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Kai Stian Olstad wrote: > Hi, > > I'm setting up a file server cluster with SLES 10, DRBD 8.2.7, LVM2, > Samba 3.2.8 and Heartbeat 2.1.4. > The DRBD resources is master/slave (ocf/heartbeat). > > In this configuration it will be multiple DRBD resources that are > added to the same volume group in LVM. > To make this work i'll have to get all the DRBD masters to run on the > same node, but I have problem in doing so. > > The DRBD resource is configuration: > <master_slave id="drbd-felles1"> > <meta_attributes id="drbd-felles1_meta_attrs"> > <attributes> > <nvpair id="drbd-felles1_metaattr_target_role" > name="target_role" value="started"/> > <nvpair id="drbd-felles1_metaattr_clone_max" name="clone_max" > value="2"/> > <nvpair id="drbd-felles1_metaattr_clone_node_max" > name="clone_node_max" value="1"/> > <nvpair id="drbd-felles1_metaattr_master_max" name="master_max" > value="1"/> > <nvpair id="drbd-felles1_metaattr_master_node_max" > name="master_node_max" value="1"/> > <nvpair id="drbd-felles1_metaattr_notify" name="notify" > value="true"/> > <nvpair id="drbd-felles1_metaattr_globally_unique" > name="globally_unique" value="false"/> > </attributes> > </meta_attributes> > <primitive id="res-drbd-felles1" class="ocf" type="drbd" > provider="heartbeat"> > <instance_attributes id="res-drbd-felles1_instance_attrs"> > <attributes> > <nvpair id="4a811802-ce58-4b53-8022-412672411c77" > name="drbd_resource" value="felles1"/> > </attributes> > </instance_attributes> > </primitive> > </master_slave> > > I also have one more that is called felles2 instead of felles1. > > To make the master be on the same node I have tried this colocation rule: > <rsc_colocation id="drbd-felles2_on_drbd-felles1" to="drbd-felles1" > to_role="master" from="drbd-felles2" score="infinity"/> > > What happens is that drbd-felles1 is running master(primary) on node1 > and slave(secondary) on the other node2. > When I start the drbd-felles2 it will run master on node1 but doesn't > start at all on node2. > > If I remove colocation rule or lover the score the drbd-felles2 slave > will start on node2, but then I'm not guarantied that the masters will > run on the same node. > > Does anyone have a solution or suggestion to this problem? > Besides Lars' suggestions, you can also have the drbd primitives inside a group which is inside the master resource. Supposed to work, but a little problematic atm. You may want to follow http://developerbugs.linux-foundation.org/show_bug.cgi?id=2080 Regards Dominik