On 16 Sep 2013, at 12:08, Paolo Bonzini wrote: > But the reason to do modularization is not to "cope with different > versions of libraries". In fact that's a problem that Fam's patches do > not solve at all. The reason to do modularization is to make libraries > optional, i.e. let them be completely absent.
You are right. In fact the 'different versions of libraries' thing is largely an orthogonal issue as a modular or non-modualar rbd driver would have much the same set of issues here. Moreover, one Fam's patches (hopefully simplified) could still help here by permitting (e.g.) a blkrbd-new.so & blkrbd-old.so (hopefully with more useful names), for those with an allergy to weak binding. -- Alex Bligh