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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"> <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 these required items, the cluster configuration files
<filename>postgresql.conf</filename>, <filename>pg_hba.conf</filename>, and <filename>postgresql.conf</filename>, <filename>pg_hba.conf</filename>, and
<filename>pg_ident.conf</filename> are traditionally stored in <filename>pg_ident.conf</filename> are traditionally stored in
<varname>PGDATA</> (although beginning in <varname>PGDATA</> (although in <productname>PostgreSQL</productname> 8.0 and
<productname>PostgreSQL</productname> 8.0 it is possible to keep them later, it is possible to keep them elsewhere).
elsewhere).
</para> </para>
<table tocentry="1" id="pgdata-contents-table"> <table tocentry="1" id="pgdata-contents-table">
@ -90,6 +89,11 @@ Item
<entry>Subdirectory containing symbolic links to tablespaces</entry> <entry>Subdirectory containing symbolic links to tablespaces</entry>
</row> </row>
<row>
<entry><filename>pg_twophase</></entry>
<entry>Subdirectory containing state files for prepared transactions</entry>
</row>
<row> <row>
<entry><filename>pg_xlog</></entry> <entry><filename>pg_xlog</></entry>
<entry>Subdirectory containing WAL (Write Ahead Log) files</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, The last 2 bytes of the page header,
<structfield>pd_pagesize_version</structfield>, store both the page size <structfield>pd_pagesize_version</structfield>, store both the page size
and a version indicator. Beginning with 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; <productname>PostgreSQL</productname> 7.3 and 7.4 used version number 1;
prior releases used version number 0. prior releases used version number 0.
(The basic page layout and header format has not changed in these versions, (The basic page layout and header format has not changed in these versions,