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Add documentation that pg_standby sleeps on Win32 because of 'copy' behavior.

This commit is contained in:
Bruce Momjian 2008-12-15 22:08:35 +00:00
parent eb88e7ee2c
commit 30c6202a2a
1 changed files with 11 additions and 2 deletions
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13
doc/src/sgml/pgstandby.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/pgstandby.sgml,v 2.5 2008/05/07 18:48:40 alvherre Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/pgstandby.sgml,v 2.6 2008/12/15 22:08:35 momjian Exp $ -->
<sect1 id="pgstandby">
<title>pg_standby</title>
@ -295,7 +295,16 @@ restore_command = 'pg_standby -d -s 5 -t C:\pgsql.trigger.5442 ...\archive %f %p
</itemizedlist>
<para>
Since the Windows example uses <literal>copy</> at both ends, either
The <literal>copy</> command on Windows sets the final file size
before the file is completely copied, which would ordinarly confuse
<application>pg_standby</application>. Therefore
<application>pg_standby</application> waits <literal>sleeptime</>
seconds once it sees the proper file size. GNUWin32's <literal>cp</>
sets the file size only after the file copy is complete.
</para>
<para>
Using the Since the Windows example uses <literal>copy</> at both ends, either
or both servers might be accessing the archive directory across the
network.
</para>