SIO rebuild & rebalance

Hi Experts,

I've been testing SIO's rebuild and rebalance functions recently.

I wana know, if i turned down one of sds service using "systemctl stop sds.service" on sds node.

How does rebuild work? Who will triger the rebuild work? & what is the signal flow like?

It confused me a lot, looking for your reply.

Thanks soooo much.