From: | Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Dávid Suchan <david(dot)suchan(dot)ds(at)gmail(dot)com>, pgsql-general(at)lists(dot)postgresql(dot)org |
Subject: | Re: pg_upgradecluster transfering only a portion of the data |
Date: | 2023-02-27 16:56:21 |
Message-ID: | 12a7a897-ff85-5280-7721-5e6d0e7cb30b@aklaver.com |
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Lists: | pgsql-general |
On 2/27/23 08:48, Tom Lane wrote:
> Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> writes:
>> On 2/27/23 08:36, Tom Lane wrote:
>>> If it was based on something like "du", perhaps the measurement
>>> was fooled by the fact that most of the data files will be hard-linked
>>> between the old and new clusters.
>
>> Does that happen without the --link option?
>
> No, but the OP didn't mention whether he used that, and even if he
> didn't say it explicitly the pg_upgradecluster wrapper might've
> supplied it.
Alright the OP's command was:
pg_upgradecluster 9.6 main
pg_upgradecluster needs the --link(-k) option to use link instead of copy.
>
> regards, tom lane
--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com
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