Documentation: how to use snapper with btrfs incremental send / receive? about snapper

[timokau]

Would it be possible to provide some sort of post-snapshot hook or native integration of btrfs send? I'd like to push a copy of my .snapshots folder to a server with a btrfs-formatted hdd (similar to what I've done with 'backintime' before, only more efficient).
Edit: this seems to do something similar, only less advanced than snapper (no pre-post snapshots).

[aschnell]

Is the error on the sending or the receiving side?

I have done some tests and have it working for me. The setup is more complicated that explained in the btrfs wiki since .snapshots itself is a subvolume. So you have to create the directories yourself (or somehow also make snapshots of .snapshots, esp. if you also want snappers metadata for the snapshots to be synced).

bootstrap

btrfs subvolume create /backup/.snapshots
mkdir /backup/.snapshots/1
btrfs send /btrfs/.snapshots/1/snapshot | btrfs receive /backup/.snapshots/1

sync diff from 1 to 2

mkdir /backup/.snapshots/2
btrfs send -p /btrfs/.snapshots/1/snapshot /btrfs/.snapshots/2/snapshot | btrfs receive /backup/.snapshots/2

Does that help?

[aschnell]

Hook are handled in #28. Unfortunately nobody had time to implement them yet.