The way I like to think of it is: Hard links are the same file, but with two valid paths. This is two different files that share the same data only as long as they are the same.
But…hasn’t ZFS always had copy-on-write functionality? How is this new feature different?
The way I like to think of it is: Hard links are the same file, but with two valid paths. This is two different files that share the same data only as long as they are the same.
But…hasn’t ZFS always had copy-on-write functionality? How is this new feature different?
Edit: I think I found my answer here: https://www.ithands-on.com/2020/09/linux-101-zfs-filesystem-cow-system.html and I think I have fundamentally misunderstood what COW meant for years. Huh.