I am not able to find documentation for how to convert an existing cephfs filesystem to use allow_ec_overwrites. The documentation says that the metadata pool needs to be replicated, but that the data pool can be EC. But it says, "For Cephfs, using an erasure coded pool means setting that pool in a file layout." Is that really necessary if your metadata pool is replicated and you have an existing EC pool for the data? Could I just enable ec overwrites and start flushing/removing the cache tier and be on my way to just using an EC pool?
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