References to union fs in cth.html

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References to union fs in cth.html

Alexander Hall
This diff removes the union filesystem pointers from cth.html

/Alexander

Index: ctm.html
===================================================================
RCS file: /cvs/www/ctm.html,v
retrieving revision 1.28
diff -u -r1.28 ctm.html
--- ctm.html 22 May 2005 18:00:10 -0000 1.28
+++ ctm.html 23 May 2006 06:52:35 -0000
@@ -302,44 +302,7 @@
 
 <p>
 If you just get the source tree, you will need to deal with local
-modifications.  One way to do this is to use the <b>union</b> filesystem,
-(see <a href="http://www.openbsd.org/cgi-bin/man.cgi?query=mount_union&amp;sektion=8">mount_union(8)</a>)
-although there have been reports that the <b>union</b> filesystem can be
-unstable if both the upper and lower layers reside on the same physical
-filesystem.  If you place your upper and lower layers on separate
-filesystems you should have no problems.  A sample of this is as follows:
-
-<p>
-Suppose your CTM-updated tree is in <tt><b>/usr/src-ctm</b></tt>, and
-your real source tree, the one you make your modifications to and do
-your builds from, is in <tt><b>/usr/src</b></tt>.
-<tt><b>/usr/src</b></tt> should be initially an empty directory.  The
-following command will set up the union mount:
-
-<pre>
- mount -t union -o -b /usr/src-ctm /usr/src
-</pre>
-
-<p>
-Modifications made to files in <tt><b>/usr/src</b></tt> will become a
-file contained within <tt><b>/usr/src</b></tt>, hiding the one in
-<tt><b>src-ctm</b></tt>.  If changes are made via CTM to the
-underlying <tt><b>src-ctm</b></tt> tree, those changes will <b>not</b>
-be seen if there is a file in the upper layer hiding it.
-
-<p>
-You should periodically unmount the
-union and search for files which are local to the union filesystem.
-
-<pre>
- umount /usr/src
- find /usr/src -type f
-</pre>
-
-<p>
-The commands <tt><b>ls -W</b></tt> and <tt><b>rm -W</b></tt> will be
-useful too, as objects named "whiteouts" in <tt><b>/usr/src</b></tt>
-will also hide files in <tt><b>src-ctm</b></tt>.
+modifications.
 
 <p>
 If you get the CVS repository, you can use the <tt><b>cvs checkout</b></tt>