[Hackbraten]

They’re ZFS snapshots, so no. That’s why I’m forced to keep my cache directory in a different dataset.

Ironically, if my backup scheme were using hard links, then I could simply exclude the cache directory from backup, so I’d have no reason to do that mountpoint spiel, and uv’s hard links would work normally.

[zahlman]

... ZFS snapshots don't produce copies of the underlying file data, do they? (Yeah, I'm still a dinosaur on ext4...)

[Hackbraten]

Nothing wrong with ext4! Having choices and preferences is a good thing.

You’re correct, ZFS snapshots don’t produce copies, at least not at the time they’re being created. They work a little like copy-on-write.