What guarantees does ceph place on data integrity? Zfs uses a Merkel tree to guarantee the integrity of all data and metadata on disk and will ultimately refuse to return "duff" data to an end user consumer.
I know ceph provides some integrity mechanisms and has a scrub feature. Does it provide full data integrity guarantees in a manner similar to zfs? What will happen if duff data is encountered at runtime? What happens if all copies of some data are present, but damaged?
Can ceph provide these guarantees, whatever they are, even when underlying storage provides no such guarantees ( xfs, extn, reiser)?
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