CephFS single file size limit and performance impact

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Dear Ceph experts,

I encounter a use case wherein the size of a single file may go beyound 50TB, and would like to know whether CephFS can support a single file with size over 50TB? Furthermore, if multiple clients, say 50, want to access (read/modify) this big file, do we expect any performance issues, e.g. something like a big lock on the whole file. I wonder whether Cephfs supports the so-called parallel feature like multiple clients can read/write different parts of the same big file...

Comments, suggestions, experience are highly appreciated,

Kind regards,

Samuel 



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