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In pg_upgrade docs, clarify that link mode uses "hard" links.

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Backpatch to 9.1 and 9.0.
This commit is contained in:
Bruce Momjian 2011-06-23 19:57:42 -04:00
parent d34e142c51
commit 194e6ee74b
1 changed files with 12 additions and 8 deletions
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20
doc/src/sgml/pgupgrade.sgml
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@ -105,7 +105,7 @@
<varlistentry> <varlistentry>
<term><option>-k</option></term> <term><option>-k</option></term>
<term><option>--link</option></term> <term><option>--link</option></term>
<listitem><para>link instead of copying files to new cluster</para></listitem> <listitem><para>use hard links instead of copying files to the new cluster</para></listitem>
</varlistentry> </varlistentry>
<varlistentry> <varlistentry>
@ -293,14 +293,18 @@ NET STOP pgsql-8.3 (<productname>PostgreSQL</> 8.3 and older used a different s
<para> <para>
Always run the <application>pg_upgrade</> binary of the new server, not the old one. Always run the <application>pg_upgrade</> binary of the new server, not the old one.
<application>pg_upgrade</> requires the specification of the old and new cluster's <application>pg_upgrade</> requires the specification of the old and new cluster's
data and executable (<filename>bin</>) directories. You can also specify separate data and executable (<filename>bin</>) directories. You can also specify
user and port values, and whether you want the data linked instead of user and port values, and whether you want the data linked instead of
copied (the default). If you use linking, the upgrade will be much copied (the default).
faster (hard link data files rather than copying them), but you </para>
will no longer be able to access your old cluster once you start
the new cluster after the upgrade. Link mode also requires that the <para>
old and new cluster data directories be in the same file system. If you use link mode, the upgrade will be much faster (no file
See <literal>pg_upgrade --help</> for a full list of options. copying), but you will not be able to access your old cluster
once you start the new cluster after the upgrade. Link mode also
requires that the old and new cluster data directories be in the
same file system. See <literal>pg_upgrade --help</> for a full
list of options.
</para> </para>
<para> <para>