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rekoil | 5 months ago

Sounds like what bcache does? https://bcache.evilpiepirate.org/

This is what bcachefs is based on.

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M95D|5 months ago

From kernel Documentation/bcache.txt:

> You'll need make-bcache from the bcache-tools repository. Both the cache device and backing device must be formatted before use.

So, it's far from overlayfs. I could accept formatting the cache device, but not the backing storage.