Is it possible (and safe) to bootstrap a large folder sync via outside channels (like sneakernet)? Concretely: - Large folder exists on A - Folder is shared from A to B - Sync starts, trickles along - Sync agent is stopped on B - Original folder data is copied via backchannel from A to B - Sync agent is re-started on B It's easy to imagine that B's sync process will simply reindex the contents of the folder upon restarting, discover that everything is identical (or very nearly so), and quickly complete without sending much more of the original contents over the network. But it's also easy to imagine that this could tickle subtle bugs or strange behavior by being outside the expected interactions with a partially-synced directory. Is this type of setup safe? Have other people done this?