ERROR: fencing_topology not supported by the RNG schema (COROSYNC)

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Environment

SUSE Linux Enterprise High Availability Extension 11 Service Pack 2

Situation

Trying to setup a fencing topology on SLES 11 SP2 HAE with something like

   mars:/tmp # crm configure fencing_topology p_stonith-sbd moerder

or

   mars:/tmp # crm configure fencing_topology mars: p_stonith-sbd moerder

results in an error message

   ERROR: fencing_topology not supported by the RNG schema

so despite the changelog states it is available seemingly it does not work.

Resolution

On SLES 11 SP2 the fencing topology was introduced as experimental. It is only implemented in schema 1.1 but not in the default schema 1.2. To change to the experimental setting one can issue

cibadmin -U -X '<cib validate-with="pacemaker-1.1"/>'

to use the schema 1.1 and then the fencing topology will work.

This will not be necessary anymore with SLES 11 SP3 HAE, as the fencing topology will be fully supported and part of the default schema.

Disclaimer

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