Okay, first the basics: cls_rbd.cc operates only on rbd header
objects, so it's doing coordinating activities, not the actual data
handling. When somebody does an operation on an rbd image, they put
some data in the header object so that everybody else can coordinate
(if it's open) or continue (if
hi,all
i take a glance at ceph code of cls_rbd.cc.
it seems that snap and clone both do not R/W any data, they just add some keys
and values, even rbds in different pools.
am i missing something? or could you explain deeper about the implemention of
snap and clone.
thanks very much.
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