Strategy for moving a large DB to another machine with least possible down-time

Hi all.

 

PG-version: 9.3.5

 

I have a DB large enough for it to be impractical to pg_dump/restore it (would require too much down-time for customer). Note that I'm noe able to move the whole cluster, only *one* DB in that cluster.

 

What is the best way to perform such a move, can i use PITR, rsync + webl-replay magic, what else?

Can Barman help with this, maybe?

 

Thanks.