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

On 3/23/18 13:16, Bruce Momjian wrote:
> Also, it would be nice if users could easily know if pg_upgrade is going
> to use COW or not because it might affect whether they choose --link or
> not.  Right now it seems unclear how a user would know.  Can we have
> pg_upgrade --check perhaps output something.  Can we also have the
> pg_upgrade status display indicate that too, e.g. change
> 
>     Copying user relation files
> 
> to
> 
>     Copying (copy-on-write) user relation files

That would be nice, but we don't have a way to tell that, AFAICT.

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