Re: will this upgrade strategy work?

Mark Steben <mark.steben@drivedominion.com> writes:

> Good afternoon, team.
>
> We wish to do a postgres upgrade from 9.4 to 9.6.  In order to
> minimize downtime we were thinking to do this:
>   1. bring postgres down (9.4 is on 'diskset 1')
>   2. do a physical copy of the data to 'diskset 2' (same phyxical
> server.
>   3.  do an inplace pg_upgrade  to 9.6 on 'diskset 2'

Note that the copy (vs link) option of pg_upgrade is non-destructive and
probably a simpler version than what you're proposing.

Whatever method you choose, best do a prior test run in a non-prod
setting to insure everything is correct.

HTH

>   4.  Bring postgres up on 9.6 diskset 2
>  This way we have 9.4 on diskset 1 to fall back on.
>
> This would work much faster than the traditional dump restore.
>
> Any comments welcome.  Thanks.
>
>
> --
> Mark Steben
>  Database Administrator
> @utoRevenue | Autobase 
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Jerry Sievers
Postgres DBA/Development Consulting
e: postgres.consulting@comcast.net
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