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authorJelmer Vernooij <jelmer@samba.org>2004-04-07 10:15:11 +0000
committerGerald W. Carter <jerry@samba.org>2008-04-23 08:45:43 -0500
commit992f1e6b8f86b346fddd266b04d29cde69585633 (patch)
tree878573999a6831aa14cd6b8072263eb5d5910aa4 /docs/smbdotconf/locking/fakeoplocks.xml
parent65c0fd59203a3d9c4cb685e3a739f29f6f0c4fd6 (diff)
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Add all the source files from the old CVS tree,
add the 5 missing chapters from the HOWTO and add jht's Samba by Example book. (This used to be commit 9fb5bcb93e57c5162b3ee6f9c7d777dc0269d100)
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+<samba:parameter name="fake oplocks"
+ type="boolean"
+ context="S"
+ xmlns:samba="http://samba.org/common">
+<description>
+ <para>Oplocks are the way that SMB clients get permission
+ from a server to locally cache file operations. If a server grants
+ an oplock (opportunistic lock) then the client is free to assume
+ that it is the only one accessing the file and it will aggressively
+ cache file data. With some oplock types the client may even cache
+ file open/close operations. This can give enormous performance benefits.
+ </para>
+
+ <para>When you set <command moreinfo="none">fake oplocks = yes</command>, <citerefentry>
+ <refentrytitle>smbd</refentrytitle><manvolnum>8</manvolnum></citerefentry> will
+ always grant oplock requests no matter how many clients are using the file.</para>
+
+ <para>It is generally much better to use the real <link linkend="OPLOCKS">
+ <parameter moreinfo="none">oplocks</parameter></link> support rather
+ than this parameter.</para>
+
+ <para>If you enable this option on all read-only shares or
+ shares that you know will only be accessed from one client at a
+ time such as physically read-only media like CDROMs, you will see
+ a big performance improvement on many operations. If you enable
+ this option on shares where multiple clients may be accessing the
+ files read-write at the same time you can get data corruption. Use
+ this option carefully!</para>
+</description>
+<value type="default">no</value>
+</samba:parameter>