How to create symlink for pg_xlog when all ready in production.

1. Need create direcotry where you want to link directory:

Example:

mkdir /pg_xlog/pg_xlog92

chown -R postgres:postggre /pg_xlog/pg_xlog92

2. By using rsync command sync data from pg_xlog to /pg_xlog/pg_xlog92

Example:

rsync -r /pg_xlog/  /pg_xlog/pg_xlog92

3. Shutdown the cluster and move the pg_xlog as pg_xlog_old.

Example:

mv pg_xlog pg_xlog_old

4. Move pg_xlog92 from pg_xlog_old

Example:

cd pg_xlog

mv pg_xlog ../

5. Start your cluster.