[zenoprax]

Have you considered "reflinks"? Supported as of [OpenZFS 2.2](https://github.com/openzfs/zfs/pull/13392).

Haven't used them yet myself but seems like a nice use case for things like minor metadata changes to media files. The bulk of the file is shared and only the delta between the two are saved.

[Lammy]

Neat; will look into this. My setup is several years older than this, predating even FreeBSD's move to OpenZFS, and I just haven't touched the config of it since then since it works flawlessly (and since I already bought the RAM lol)