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* pg_upgradecluster version 10 to 16 question
@ 2025-06-10 20:01 Jim Cunning <[email protected]>
2025-06-10 20:14 ` Re: pg_upgradecluster version 10 to 16 question Adrian Klaver <[email protected]>
0 siblings, 1 reply; 3+ messages in thread
From: Jim Cunning @ 2025-06-10 20:01 UTC (permalink / raw)
To: [email protected]
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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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^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: pg_upgradecluster version 10 to 16 question
2025-06-10 20:01 pg_upgradecluster version 10 to 16 question Jim Cunning <[email protected]>
@ 2025-06-10 20:14 ` Adrian Klaver <[email protected]>
2025-06-10 20:17 ` Re: pg_upgradecluster version 10 to 16 question Adrian Klaver <[email protected]>
0 siblings, 1 reply; 3+ messages in thread
From: Adrian Klaver @ 2025-06-10 20:14 UTC (permalink / raw)
To: Jim Cunning <[email protected]>; [email protected]
On 6/10/25 13:01, Jim Cunning wrote:
> 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.
>
> 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.
>
> 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?
1) Do:
man pg_upgradecluster
2) Assuming you used the PGDG repos to install Postgres you can do:
sudo apt install postgresql-10
to get a Postgres 10 install. I would move the
/var/lib/postgresql/10/main you created out of the way and then move the
contents back in to the installed version.
>
> Thanks in advance.
>
--
Adrian Klaver
[email protected]
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: pg_upgradecluster version 10 to 16 question
2025-06-10 20:01 pg_upgradecluster version 10 to 16 question Jim Cunning <[email protected]>
2025-06-10 20:14 ` Re: pg_upgradecluster version 10 to 16 question Adrian Klaver <[email protected]>
@ 2025-06-10 20:17 ` Adrian Klaver <[email protected]>
0 siblings, 0 replies; 3+ messages in thread
From: Adrian Klaver @ 2025-06-10 20:17 UTC (permalink / raw)
To: Jim Cunning <[email protected]>; [email protected]
On 6/10/25 13:14, Adrian Klaver wrote:
> On 6/10/25 13:01, Jim Cunning wrote:
>> 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.
>>
>> 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.
>>
>> 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?
>
> 1) Do:
>
> man pg_upgradecluster
>
> 2) Assuming you used the PGDG repos to install Postgres you can do:
>
> sudo apt install postgresql-10
>
> to get a Postgres 10 install. I would move the
> /var/lib/postgresql/10/main you created out of the way and then move the
> contents back in to the installed version.
Forgot to say, be sure and retain a copy of the original 10 $DATADIR
somewhere where you can fetch it should the above not work as planned.
>
>>
>> Thanks in advance.
>>
>
--
Adrian Klaver
[email protected]
^ permalink raw reply [nested|flat] 3+ messages in thread
end of thread, other threads:[~2025-06-10 20:17 UTC | newest]
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2025-06-10 20:01 pg_upgradecluster version 10 to 16 question Jim Cunning <[email protected]>
2025-06-10 20:14 ` Adrian Klaver <[email protected]>
2025-06-10 20:17 ` Adrian Klaver <[email protected]>
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