Horton

Re: a back up question

Alvaro Herrera <alvherre@alvh.no-ip.org>

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From: Alvaro Herrera <alvherre@alvh.no-ip.org>
To: Carl Karsten <carl@personnelware.com>
Cc: Martin Mueller <martinmueller@northwestern.edu>, "pgsql-general@lists.postgresql.org" <pgsql-general@lists.postgresql.org>
Date: 2017-12-05T22:15:19Z
Lists: pgsql-general 
Carl Karsten wrote:
> Nothing wrong with lots of tables and data.
> 
> Don't impose any constraints on your problem you don't need to.
> 
> Like what are you backing up to?    $400 for a 1T ssd or $80 fo a 2T usb3
> spinny disk.
> 
> If you are backing up while the db is being updated, you need to make sure
> updates are queued until the backup is done.  don't mess with that
> process.   personally I would assume the db is always being updated and
> expect that.

A backup generated by pg_dump never includes writes that are in flight
while the backup is being taken.  That would make the backup absolutely
worthless!

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services