when node fails, failed node's predecessor needs to send new backup

[conniec]

Nodes A --> B --> C --> A

If A fails, then it is no longer storing backup from its predecessor, C.
C needs to send backup to its new successor (in this case B)

[rreas]

It seems like you can do this by simply using replicate when you update the predecessor link 😄

[conniec]

after we notify the new sucessor, also send them our data

384d972