Re: pg_upgradecluster transfering only a portion of the data

On 2/27/23 08:36, Tom Lane wrote:
> Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> writes:
>> On 2/27/23 07:44, Dávid Suchan wrote:
>>> After a successful prompt finished, I checked the database and the size
>>> went from originally 20gb (in 9.6) to 700~ mb (in 14) while the disk
>>> space available shrank by about 2gb meaning that there is still the 20gb
>>> of data. I tried the entire process twice (since I had created an AWS
>
>> 1) How did you measure the size of the database clusters?
>
> 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?

>
> regards, tom lane

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com