[ClusterLabs] Potential deprecation: Disabling schema validation for the CIB

[Ken Gaillot]

Hi all,

Pacemaker uses an XML schema to prevent invalid syntax from being added
to the CIB. The CIB's "validate-with" option is typically set to a
version of this schema (like "pacemaker-3.9").

It is possible to explicitly disable schema validation by setting
validate-with to "none". This is clearly a bad idea since it allows
invalid syntax to be added, which will at best be ignored and at worst
cause undesired or buggy behavior.

I'm thinking of deprecating the ability to use "none" in Pacemaker
2.1.8 and dropping support in 3.0.0. If anyone has a valid use case for
this feature, now is the time to speak up!
-- 
Ken Gaillot <kgaillot at redhat.com>