On Tue, Dec 19, 2017 at 10:39 AM, Stephen Frost <sfr...@snowman.net> wrote:
> Greetings, > > * James Keener (j...@jimkeener.com) wrote: > > Would a storage block level incremental like zfs work? > > This really depends on what you want out of your backups and just > exactly how the ZFS filesystem is set up. Remember that any backup of > PG that doesn't use PG's start/stop backup must be atomic across all > tablespaces and even then that really just allows you to bring PG back > up as of that point of the snapshot. I wouldn't recommend trying to > play WAL forward from that kind of a backup. If you use do use > pg_start/stop_backup with ZFS snapshots, and make sure to track all of > the WAL that's generated between the start/stop backup and ensure it's > reliably stored, etc, then they can work, but it's not simple. > > I believe that the thread started with a data warehouse use case. That might be one application where data ingestion and processing can be stopped and started in a controlled manner. As opposed to a continuously live system where changes are going to continually accumulate in the WAL. Best regards, Alex
