good morning,
i am trying to understand how ceph snapshot works.
i have read that snap are cow, which means if i am correct that if a new write update an exising block on a volume, the "old" block is copied to snap before overwrite it on original volume, am i right?
so, i creted a volume say 10 GB in size, empty, then created a snap.
so, coming to my doubt, why the snap is 10GB in size? it should be 0, because no new write update were done, am i right?
thank you VERY much for your time.
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