Hi, I am evaluating the HA solution of PostgreSQL 9.3. 1. Pacemaker resource agent for PostgreSQL + PostgreSQL sync stream replication 2. PG-Pool + PostgreSQL sync stream replication According to my understanding, above two solution must be done same things to recovery failed master as new slave after fail over: copy the database from new master. Is it necessary operation to recovery failed master? Does it protect the data consistent after fail over? If copy operation is necessary, recovery time very depend on database size. For example, our database size is 10G, we have to wait for a few minutes for copying new master data by network. BRs, Leo -- View this message in context: http://postgresql.1045698.n5.nabble.com/How-to-recovery-failed-master-after-failover-tp5794524.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general