public inbox for [email protected]  

help / color / mirror / Atom feed

From: Colin 't Hart <[email protected]>
To: PostgreSQL General <[email protected]>
Subject: pgBackrest and newer timelines
Date: Wed, 10 Dec 2025 12:43:01 +0100
Message-ID: <CAMon-aTxU9dOJ2Z7F3PvAbNYRygNgfY-zxsGgK4k8iQFRZrEew@mail.gmail.com> (raw)

Hi,

Before a migration we tested a database restore on the new server -- which
was configured to archive its WAL, and has archived WAL on a new timeline
to our central backup server. We tested this twice.

Now we have done the migration, which due to the size of the database we
achieved by detaching the disks from the old server and attaching them to
the new (this was the easiest way to achieve an OS upgrade from Ubuntu
20.04 to Debian 12). ((Yes we reindexed the text columns.))

So now our new server is still on the original timeline, but our backup
server contains WAL from two new timelines.

What should we do? Can we safely remove that WAL from the backup server?
How?

Thanks,

Colin

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: [email protected]
  Cc: [email protected], [email protected]
  Subject: Re: pgBackrest and newer timelines
  In-Reply-To: <CAMon-aTxU9dOJ2Z7F3PvAbNYRygNgfY-zxsGgK4k8iQFRZrEew@mail.gmail.com>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox