Message-ID: <cb7713f2-8ff9-42eb-a3fa-a89c4dc8257a@gmail.com>
Date: Tue, 10 Jun 2025 13:01:17 -0700
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From: Jim Cunning <jlcunning46@gmail.com>
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To: pgsql-general@lists.postgresql.org
Subject: pg_upgradecluster version 10 to 16 question
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    I had a Ubuntu 20.04 LTS system with a postgresql version 10
    database, and the system became unbootable.  The database was stored
    in /var/lib/postgresql/10/main and I was able to recover the entire
    contents of the data in that directory and below.  I now have a
    system running ubuntu 24.04 LTS with postgresql version 16.<br>
    <br>
    I obviously no longer have a running version 10 server, so I cannot
    use pg_dump to retrieve the data.  I have placed the recovered
    version files in /var/lib/postgresql/10/main on my new system,
    alongside the /var/lib/postgresql/16/main that was created when I
    installed postgresql.  I have tried several iterations of the
    pg_upgradecluster command, a Python script provided by Ubuntu, but
    it says it cannot find the database files.<br>
    <br>
    I also see from the postgresql wiki pages that there is a pg_upgrade
    utility program, but cannot find in any of the Ubuntu-provided
    installation files.  Can anyone provide some guidance on how I might
    proceed?<br>
    <br>
    Thanks in advance.<br>
    <br>
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