On Tue, Jul 10, 2012 at 06:29:24PM +0200, Magnus Hagander wrote:
> > Testing maybe?  I feel we have just avoided saying what you can and
> > can't do with the standbys and pg_upgrade, so I think we have to state
> > something.  If we just want to say "recreate", let's say that.
> Well, the bottom line is we can'd do *anything* with a standby with 
> pg_upgrade.
> Once you've promoted it, it is no longer a standby, and now you can
> use pg_upgrade.
> >> And I think the sentence about running rsync is extremely vague - run
> >> rsync where and how? What are you actually trying to suggest people
> >> do?
> >
> > Updated docs attached.
> I suggest just removing the rsync part completely. You're basically
> saying "you ca nset up a new standby after you're done", which is kind
> of obvious anyway. And if you're going to use rsync fromthe master to
> make a new standby, there's no point in running pg_upgrade on the new
> standby in the first place.

I went the other direction and just said you can't upgrade a standby (as
a standby), and to just use rsync --- patch attached.

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

  + It's impossible for everything to be true. +
diff --git a/doc/src/sgml/pgupgrade.sgml b/doc/src/sgml/pgupgrade.sgml
new file mode 100644
index 30f4544..4a646bd
*** a/doc/src/sgml/pgupgrade.sgml
--- b/doc/src/sgml/pgupgrade.sgml
*************** psql --username postgres --file script.s
*** 518,523 ****
--- 518,529 ----
+    A Log-Shipping Standby Server (<xref linkend="warm-standby">) cannot
+    be upgraded because the server must allow writes.  The simplest case
+    is to upgrade the primary and use rsync to upgrade the standbys.
+   </para>
+   <para>
     If you want to use link mode and you do not want your old cluster
     to be modified when the new cluster is started, make a copy of the
     old cluster and upgrade that in link mode. To make a valid copy
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