Re: PostgreSQL suitable?

On Tue, Dec 19, 2017 at 10:39 AM, Stephen Frost <sfrost(at)snowman(dot)net> wrote:

> Greetings,
>
> * James Keener (jim(at)jimkeener(dot)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