Horton

Re: Add system identifier to backup manifest

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Amul Sul <sulamul@gmail.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2024-01-17T13:46:09Z
Lists: pgsql-hackers 
On Wed, Jan 17, 2024 at 6:45 AM Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
> Hmm, okay, but what if I take a full backup from a primary server and
> later I want an incremental from a standby, or the other way around?
> Will this prevent me from using such a combination?

The system identifier had BETTER match in such cases. If it doesn't,
somebody's run pg_resetwal on your standby since it was created... and
in that case, no incremental backup for you!

-- 
Robert Haas
EDB: http://www.enterprisedb.com

Commits

  1. Add the system identifier to backup manifests.

  2. pg_verifybackup: Refactor parse_manifest_file.

  3. Add option force_initdb to PostgreSQL::Test::Cluster:init()