a postgres novice here, so sorry if my questions don't sound meaningful. My postgres server setup goes as follows:
Master(on server A), Upstream(on B, receiving wal from A), Downstream(on C, receiving wal from B). A is streaming wal logs on a few
physical_replication_slots. All the other servers are created from pg_basebackup of A.
Now, I've another server X, dedicated to WAL storage. Whatever be the primary at the moment, its wal logs will be dumped on X inside directory(say /root/wal_logs). There's a
pg_receivewal(on server X) process receiving this wal from Master and saving it in the same directory.
Under failover scenarios, slaves are promoted to master, and others act like slaves. So, I wanted to know,