One of the steps for setting up a master-slave is to do pg_basebackup on the slave from the master.
So let's suppose I have a master and a slave. So if my master is down for 30 mins, I convert my slave to a Master. Now after 30 min I want my previous master to be up as a slave with all the updated records. But I don't want to move the data of the previous master to another location and then use pg_basebackup to get the data at the same place.
Is there any way with which we can update the existing data of the previous master rather than overriding it?