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Update storage.sgml to reflect current reality.

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This commit is contained in:
Tom Lane 2005-09-01 20:01:53 +00:00
parent a635ab46be
commit e32a2ec68e
1 changed files with 10 additions and 5 deletions
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15
doc/src/sgml/storage.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/storage.sgml,v 1.6 2005/04/28 21:47:09 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/storage.sgml,v 1.7 2005/09/01 20:01:53 tgl Exp $
-->
<chapter id="storage">
@ -34,9 +34,8 @@ files, as shown in <xref linkend="pgdata-contents-table">. In addition to
these required items, the cluster configuration files
<filename>postgresql.conf</filename>, <filename>pg_hba.conf</filename>, and
<filename>pg_ident.conf</filename> are traditionally stored in
<varname>PGDATA</> (although beginning in
<productname>PostgreSQL</productname> 8.0 it is possible to keep them
elsewhere).
<varname>PGDATA</> (although in <productname>PostgreSQL</productname> 8.0 and
later, it is possible to keep them elsewhere).
</para>
<table tocentry="1" id="pgdata-contents-table">
@ -90,6 +89,11 @@ Item
<entry>Subdirectory containing symbolic links to tablespaces</entry>
</row>
<row>
<entry><filename>pg_twophase</></entry>
<entry>Subdirectory containing state files for prepared transactions</entry>
</row>
<row>
<entry><filename>pg_xlog</></entry>
<entry>Subdirectory containing WAL (Write Ahead Log) files</entry>
@ -437,7 +441,8 @@ data. Empty in ordinary tables.</entry>
The last 2 bytes of the page header,
<structfield>pd_pagesize_version</structfield>, store both the page size
and a version indicator. Beginning with
<productname>PostgreSQL</productname> 8.0 the version number is 2;
<productname>PostgreSQL</productname> 8.1 the version number is 3;
<productname>PostgreSQL</productname> 8.0 used version number 2;
<productname>PostgreSQL</productname> 7.3 and 7.4 used version number 1;
prior releases used version number 0.
(The basic page layout and header format has not changed in these versions,