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diff --git a/docs/docbook/projdoc/msdfs_setup.sgml b/docs/docbook/projdoc/msdfs_setup.sgml new file mode 100644 index 00000000000..35c9d40840a --- /dev/null +++ b/docs/docbook/projdoc/msdfs_setup.sgml @@ -0,0 +1,117 @@ +<chapter id="msdfs"> + +<chapterinfo> + <author> + <firstname>Shirish</firstname><surname>Kalele</surname> + <affiliation> + <orgname>Samba Team & Veritas Software</orgname> + <address> + <email>samba@samba.org</email> + </address> + </affiliation> + </author> + + + <pubdate>12 Jul 200</pubdate> +</chapterinfo> + + +<title>Hosting a Microsoft Distributed File System tree on Samba</title> + +<sect1> + + <title>Instructions</title> + + <para>The Distributed File System (or Dfs) provides a means of + separating the logical view of files and directories that users + see from the actual physical locations of these resources on the + network. It allows for higher availability, smoother storage expansion, + load balancing etc. For more information about Dfs, refer to <ulink + url="http://www.microsoft.com/NTServer/nts/downloads/winfeatures/NTSDistrFile/AdminGuide.asp"> + Microsoft documentation</ulink>. </para> + + <para>This document explains how to host a Dfs tree on a Unix + machine (for Dfs-aware clients to browse) using Samba.</para> + + <para>To enable SMB-based DFS for Samba, configure it with the + <parameter>--with-msdfs</parameter> option. Once built, a + Samba server can be made a Dfs server by setting the global + boolean <ulink url="smb.conf.5.html#HOSTMSDFS"><parameter> + host msdfs</parameter></ulink> parameter in the <filename>smb.conf + </filename> file. You designate a share as a Dfs root using the share + level boolean <ulink url="smb.conf.5.html#MSDFSROOT"><parameter> + msdfs root</parameter></ulink> parameter. A Dfs root directory on + Samba hosts Dfs links in the form of symbolic links that point + to other servers. For example, a symbolic link + <filename>junction->msdfs:storage1\share1</filename> in + the share directory acts as the Dfs junction. When Dfs-aware + clients attempt to access the junction link, they are redirected + to the storage location (in this case, \\storage1\share1).</para> + + <para>Dfs trees on Samba work with all Dfs-aware clients ranging + from Windows 95 to 2000.</para> + + <para>Here's an example of setting up a Dfs tree on a Samba + server.</para> + + <para><programlisting> +# The smb.conf file: +[global] + netbios name = SAMBA + host msdfs = yes + +[dfs] + path = /export/dfsroot + msdfs root = yes + </programlisting></para> + + + <para>In the /export/dfsroot directory we set up our dfs links to + other servers on the network.</para> + + <para><prompt>root# </prompt><userinput>cd /export/dfsroot</userinput></para> + <para><prompt>root# </prompt><userinput>chown root /export/dfsroot</userinput></para> + <para><prompt>root# </prompt><userinput>chmod 755 /export/dfsroot</userinput></para> + <para><prompt>root# </prompt><userinput>ln -s msdfs:storageA\\shareA linka</userinput></para> + <para><prompt>root# </prompt><userinput>ln -s msdfs:serverB\\share,serverC\\share linkb</userinput></para> + + + <para>You should set up the permissions and ownership of + the directory acting as the Dfs root such that only designated + users can create, delete or modify the msdfs links. Also note + that symlink names should be all lowercase. This limitation exists + to have Samba avoid trying all the case combinations to get at + the link name. Finally set up the symbolic links to point to the + network shares you want, and start Samba.</para> + + <para>Users on Dfs-aware clients can now browse the Dfs tree + on the Samba server at \\samba\dfs. Accessing + links linka or linkb (which appear as directories to the client) + takes users directly to the appropriate shares on the network.</para> + + <sect2> + <title>Notes</title> + + <itemizedlist> + <listitem><para>Windows clients need to be rebooted + if a previously mounted non-dfs share is made a dfs + root or vice versa. A better way is to introduce a + new share and make it the dfs root.</para> + </listitem> + + <listitem><para>Currently there's a restriction that msdfs + symlink names should all be lowercase.</para> + </listitem> + + <listitem><para>For security purposes, the directory + acting as the root of the Dfs tree should have ownership + and permissions set so that only designated users can + modify the symbolic links in the directory.</para> + </listitem> + </itemizedlist> + </sect2> +</sect1> + + + +</chapter> |