On Sat, Jul 2, 2016 at 06:02:12PM +0200, Christoph Berg wrote:
> Re: Bruce Momjian 2016-07-02 <[email protected]>
> > > Shouldn't this mention that OS upgrades are a possible problem as
> > > well? We've seen the de_DE.UTF-8 ordering break in RHEL 5->6, and
> > > again in 6->7. (5 and 7 are compatible.) The problematic strings were
> > > "999" and "9-9-9".
> >
> > Yes, we can do that. Do you have suggested wording? I was not sure how
> > to tell people anything related to collation versions.
>
> How about simply this: ?
>
> Non<literal>C</> and and non-<literal>POSIX</> locales rely on the
> operating system's collation library for character set ordering.
> This controls the ordering of keys stored in indexes. For this
> eason,
> a cluster cannot switch to an incompatible collation library
> ersion,
> either through
>
> + operating system upgrade,
>
> snapshot restore, binary streaming replication, or
> <application>pg_upgrade</> run.
OK, good point. I was more focused on cluster moves than an OS change.
How is the attached patch?
--
Bruce Momjian <[email protected]> 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 +
diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml
new file mode 100644
index 6d39ce7..0961147
*** a/doc/src/sgml/runtime.sgml
--- b/doc/src/sgml/runtime.sgml
*************** postgres$ <userinput>initdb -D /usr/loca
*** 188,195 ****
operating system's collation library for character set ordering.
This controls the ordering of keys stored in indexes. For this reason,
a cluster cannot switch to an incompatible collation library version,
! either through snapshot restore, binary streaming replication, or
! <application>pg_upgrade</> run.
</para>
<sect2 id="creating-cluster-mount-points">
--- 188,196 ----
operating system's collation library for character set ordering.
This controls the ordering of keys stored in indexes. For this reason,
a cluster cannot switch to an incompatible collation library version,
! either through snapshot restore, binary streaming replication,
! <application>pg_upgrade</> run, a different operating system, or an
! operating system upgrade.
</para>
<sect2 id="creating-cluster-mount-points">
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