Recreate Snapshots and their Parent Relationships on a second Server.

Hi.

I have an Old Server with a bunch of btrfs Snapshots.
I'm setting up a new server and I would like to transfer those Snapshots as efficiently as possible, while still maintaining their parent<->child relationships for space efficient storage.

Apart from manually using "btrfs send" and "btrfs send -p" where applicable, is there an easy way to transfer everything in one go?

Can I identify Snapshot relationships via their ID or some other data that I can display using btrfs tools?

"btrfs subvolume list -uq /some/subvol" can help figure out the existing parent relationships, but in practice if your snapshots are simply a linear series over time then I doubt you'll gain much by parsing all those UUIDs over simply doing an initial btrfs send/receive without any parent followed by send/receive operations using the previous snapshot as the parent.

I'm assuming of course that your snapshots are easier to sort by chronological order than parsing the UUIDs out of the "btrfs subvol list -up" output.

In my experience I actually end up using slightly less disk space with the new parent/child relationships on the new filesystem, I assume because the original source filesystem had missing parents that no longer exist as they've long since been pruned, but it might also just be that there's less fragmentation and smaller metadata consumption to hold the new relationships.