Re: file cloning in pg_upgrade and CREATE DATABASE

I think this documentation change:

    +   leaving the old cluster untouched.  At present, this is supported on Linux
                                ---------

would be better by changing "untouched" to "unmodified".

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

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

+ As you are, so once was I.  As I am, so you will be. +
+                      Ancient Roman grave inscription +