Re: file cloning in pg_upgrade and CREATE DATABASE - Mailing list pgsql-hackers

On 07/11/2018 19:03, Tom Lane wrote:
> Peter Eisentraut <peter.eisentraut@2ndquadrant.com> writes:
>> Committed, thanks.
> 
> It seems unfortunate that there is no test coverage in the committed
> patch.  I realize that it may be hard to test given the filesystem
> dependency, but how will we know if it works at all?

You can use something like

PG_UPGRADE_OPTS=--clone make -C src/bin/pg_upgrade check

(--link is similarly untested.)

If we do get the TAP tests for pg_upgrade set up, we can create smaller
and faster test cases for this.

-- 
Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services