[Linux-HA] some beginner question about heartbeat 2.1 + drbd

[Papp Tamás]

Dear All,

I don't understand some things about the relation of heartbeat to drbd. 
This would be a lustre mds cluster.

I've added this:

<master_slave id="ms-mdt">
  <meta_attributes id="ma-ms-mdt">
    <attributes>
      <nvpair id="ma-ms-mdt-1" name="clone_max" value="2"/>
      <nvpair id="ma-ms-mdt-2" name="clone_node_max" value="1"/>
      <nvpair id="ma-ms-mdt-3" name="master_max" value="1"/>
      <nvpair id="ma-ms-mdt-4" name="master_node_max" value="1"/>
      <nvpair id="ma-ms-mdt-5" name="notify" value="yes"/>
      <nvpair id="ma-ms-mdt-6" name="globally_unique" value="false"/>
      <nvpair id="ma-ms-mdt-7" name="target_role" value="stopped"/>
    </attributes>
  </meta_attributes>
  <primitive id="drbd_mdt" class="ocf" provider="heartbeat" type="drbd">
    <instance_attributes id="ia-mdt">
      <attributes>
        <nvpair id="ia-mdt-1" name="drbd_resource" value="mdt"/>
      </attributes>
    </instance_attributes>
  </primitive>
</master_slave>

This is the command, i's OK:

$ cibadmin --obj_type resources -C -x resource_drbd.xml
$

Than I try to make constrain:
1.
<rsc_location id="mdt-placement-1" rsc="ms-mdt">
 <rule id="prefered_mdt-placement-1" score="-INFINITY">
        <expression attribute="#uname" 
id="a7435f31-eb26-44eb-b02b-3e67f87e6cb0" operation="ne" value="teszt1"/>
        <expression attribute="#uname" 
id="694a1512-4b26-4c10-a807-f8e349b8ae1d" operation="ne" value="teszt2"/>
 </rule>
</rsc_location>

2.
<rsc_location id="place_mdt_on_teszt1" rsc="ms-mdt">
  <rule id="prefered_place_mdt_on_teszt1" score="100">
    <expression attribute="#uname" 
id="59d25d0f-3469-4f06-9efa-7a225fd12c72" operation="eq" value="teszt1"/>
    <expression attribute="#uname" 
id="59d25d0f-3469-4f06-9efa-7a225fd12c73" operation="eq" value="teszt2"/>
  </rule>
</rsc_location>

$ cibadmin --obj_type constraints -U -x constrains.xml
Call cib_modify failed (-22): The object/attribute does not exist
<null>
$

What's wrong about this command?

But I can create them with gui.

Which xml is the right placement definition? I want to make it available 
only on one place and be it teszt1 if it's active.

If I create the first one, it seems to be working, but then not. One 
time the master (Primary) is on teszt2, then on teszt1.

I'll have more questions, but first of all I guess I should make this to 
work.

By the way this is an CentOS 5 (2.6.18), with lustre 1.6.3 and drbd 0.7.25 .

I hope, I was successfull to explain the problem:)

Thank you,

tompos