svn commit: r48637 - in head/en_US.ISO8859-1/books/handbook: cutting-edge mirrors
Warren Block <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.cvs.doc |
|---|---|
| Message-ID | <[email protected]> |
Author: wblock
Date: Thu Apr 14 21:52:30 2016
New Revision: 48637
URL: https://svnweb.freebsd.org/changeset/doc/48637
Log:
Remove CTM from the Handbook. Some time back, CTM became deprecated or
impractical or both. Cleared with clusteradm.
Modified:
head/en_US.ISO8859-1/books/handbook/cutting-edge/chapter.xml
head/en_US.ISO8859-1/books/handbook/mirrors/chapter.xml
Modified: head/en_US.ISO8859-1/books/handbook/cutting-edge/chapter.xml
==============================================================================
--- head/en_US.ISO8859-1/books/handbook/cutting-edge/chapter.xml Thu Apr 14 18:53:26 2016 (r48636)
+++ head/en_US.ISO8859-1/books/handbook/cutting-edge/chapter.xml Thu Apr 14 21:52:30 2016 (r48637)
@@ -73,9 +73,8 @@
<itemizedlist>
<listitem>
<para>How to keep a &os; system up-to-date with
- <application>freebsd-update</application>,
- <application>Subversion</application>, or
- <application>CTM</application>.</para>
+ <application>freebsd-update</application> or
+ <application>Subversion</application>.</para>
</listitem>
<listitem>
@@ -1036,13 +1035,6 @@ before running "/usr/sbin/freebsd-update
-CURRENT code from the <literal>head</literal> branch of
one of the Subversion mirror sites listed in
<xref linkend="svn-mirrors"/>.</para>
-
- <para>Users with very slow or limited Internet connectivity
- can instead use CTM as described in <xref linkend="ctm"/>,
- but it is not as reliable as
- <application>svn</application> and
- <application>svn</application> is the recommended method
- for synchronizing source.</para>
</listitem>
<listitem>
@@ -1150,9 +1142,7 @@ before running "/usr/sbin/freebsd-update
</indexterm> to check out the source for the desired
branch. Branch names, such as
<literal>stable/9</literal>, are listed at <link
- xlink:href="&url.base;/releng/">www.freebsd.org/releng</link>.
- CTM (<xref linkend="ctm"/>) can be used if a reliable
- Internet connection is not available.</para>
+ xlink:href="&url.base;/releng/">www.freebsd.org/releng</link>.</para>
</listitem>
<listitem>
@@ -1175,9 +1165,8 @@ before running "/usr/sbin/freebsd-update
<title>Synchronizing Source</title>
<para>There are various methods for staying up-to-date with the
- &os; sources. This section compares the primary services,
- <application>Subversion</application> and
- <application>CTM</application>.</para>
+ &os; sources. This section describes the primary service,
+ <application>Subversion</application>.</para>
<warning>
<para>While it is possible to update only parts of the source
@@ -1207,33 +1196,9 @@ before running "/usr/sbin/freebsd-update
<application>Subversion</application> is described in <xref
linkend="svn"/>.</para>
- <indexterm>
- <primary><application>CTM</application></primary>
- </indexterm>
- <para><application>CTM</application> does not interactively
- compare the local sources with those on the master archive or
- otherwise pull them across. Instead, a script which identifies
- changes in files since its previous run is executed several
- times a day on the master CTM machine. Any detected changes are
- compressed, stamped with a sequence-number, and encoded for
- transmission over email in printable <acronym>ASCII</acronym>
- only. Once downloaded, these <firstterm>deltas</firstterm> can
- be run through <command>ctm.rmail</command> which will
- automatically decode, verify, and apply the changes to the
- user's copy of the sources. This process is more efficient than
- <application>Subversion</application> and places less strain on
- server resources since it is a <emphasis>push</emphasis>, rather
- than a <emphasis>pull</emphasis>, model. Instructions for using
- <application>CTM</application> to synchronize source can be
- found at <xref linkend="ctm"/>.</para>
-
<para>If a user inadvertently wipes out portions of the local
archive, <application>Subversion</application> will detect and
- rebuild the damaged portions. <application>CTM</application>
- will not, and if a user deletes some portion of the source tree
- and does not have a backup, they will have to start from scratch
- from the most recent <firstterm>base delta</firstterm> and
- rebuild it all with <application>CTM</application>.</para>
+ rebuild the damaged portions during an update.</para>
</sect1>
<sect1 xml:id="makeworld">
Modified: head/en_US.ISO8859-1/books/handbook/mirrors/chapter.xml
==============================================================================
--- head/en_US.ISO8859-1/books/handbook/mirrors/chapter.xml Thu Apr 14 18:53:26 2016 (r48636)
+++ head/en_US.ISO8859-1/books/handbook/mirrors/chapter.xml Thu Apr 14 21:52:30 2016 (r48637)
@@ -133,294 +133,6 @@ This site doesn't have any products newe
&chap.mirrors.ftp.inc;
</sect1>
- <sect1 xml:id="ctm">
- <title>Using CTM</title>
-
- <indexterm>
- <primary>CTM</primary>
- </indexterm>
-
- <para><application>CTM</application> is a method for keeping a
- remote directory tree in sync with a central one. It is built
- into &os; and can be used to synchronize a system with &os;'s
- source repositories. It supports synchronization of an entire
- repository or just a specified set of branches.</para>
-
- <para><application>CTM</application> is specifically designed for
- use on lousy or non-existent TCP/IP connections and provides
- the ability for changes to be automatically sent by email. It
- requires the user to obtain up to three deltas per day for the
- most active branches. Update sizes are always kept as small as
- possible and are typically less than 5K. About one in every ten
- updates is 10-50K in size, and there will occasionally be an
- update larger than 100K+.</para>
-
- <para>When using <application>CTM</application> to track &os;
- development, refer to the caveats related to working directly
- from the development sources rather than a pre-packaged release.
- These are discussed in <link linkend="current-stable">Tracking
- a Development Branch</link>.</para>
-
- <para>Little documentation exists on the process of creating
- deltas or using <application>CTM</application> for other
- purposes. Contact the &a.ctm-users.name; mailing list for
- answers to questions on using
- <application>CTM</application>.</para>
-
- <sect2 xml:id="mirrors-ctm">
- <title>Getting Deltas</title>
-
- <para>The <quote>deltas</quote> used by
- <application>CTM</application> can be obtained either through
- anonymous <acronym>FTP</acronym> or email.</para>
-
- <para><acronym>FTP</acronym> deltas can be obtained from the
- following mirror sites. When using anonymous
- <acronym>FTP</acronym> to obtain
- <application>CTM</application> deltas, select a mirror that is
- geographically nearby. In case of problems, contact the
- &a.ctm-users.name; mailing list.</para>
-
- <variablelist>
- <varlistentry>
- <term>Global mirror</term>
-
- <listitem>
- <itemizedlist>
- <listitem>
- <para><uri
- xlink:href="ftp://ftp.FreeBSD.org/pub/FreeBSD/development/CTM/">ftp://ftp.FreeBSD.org/pub/FreeBSD/development/CTM/</uri></para>
- </listitem>
- </itemizedlist>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term>South Africa, backup server for old deltas</term>
-
- <listitem>
- <itemizedlist>
- <listitem>
- <para><uri
- xlink:href="ftp://ftp.za.FreeBSD.org/pub/FreeBSD/CTM/">ftp://ftp.za.FreeBSD.org/pub/FreeBSD/CTM/</uri></para>
- </listitem>
- </itemizedlist>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term>Taiwan/R.O.C.</term>
-
- <listitem>
- <itemizedlist>
- <listitem>
- <para><uri
- xlink:href="ftp://ctm.tw.FreeBSD.org/pub/FreeBSD/development/CTM/">ftp://ctm.tw.FreeBSD.org/pub/FreeBSD/development/CTM/</uri></para>
- </listitem>
-
- <listitem>
- <para><uri
- xlink:href="ftp://ctm2.tw.FreeBSD.org/pub/FreeBSD/development/CTM/">ftp://ctm2.tw.FreeBSD.org/pub/FreeBSD/development/CTM/</uri></para>
- </listitem>
-
- <listitem>
- <para><uri
- xlink:href="ftp://ctm3.tw.FreeBSD.org/pub/FreeBSD/development/CTM/">ftp://ctm3.tw.FreeBSD.org/pub/FreeBSD/development/CTM/</uri></para>
- </listitem>
- </itemizedlist>
- </listitem>
- </varlistentry>
- </variablelist>
-
- <para>To instead receive deltas through email, subscribe to one
- of the <literal>ctm-src</literal> distribution lists available
- from <uri
- xlink:href="http://lists.freebsd.org/mailman/listinfo">http://lists.freebsd.org/mailman/listinfo</uri>.
- For example, &a.ctm-src-cur.name; supports the head
- development branch and &a.ctm-src-9.name; supports the 9.X
- release branch.</para>
-
- <para>As <application>CTM</application> updates arrive through
- email, use <command>ctm_rmail</command> to unpack and apply
- them. This command can be run directly from an entry in
- <filename>/etc/aliases</filename> in order to automate this
- process. Refer to &man.ctm.rmail.1; for more details.</para>
-
- <note>
- <para>Regardless of the method which is used to get deltas,
- <application>CTM</application> users should subscribe
- to the &a.ctm-announce.name; mailing list as this is the
- only mechanism by which <application>CTM</application>
- announcements are posted.</para>
- </note>
- </sect2>
-
- <sect2>
- <title><application>CTM</application> Usage</title>
-
- <para>Before <application>CTM</application> deltas can be used
- for the first time, a starting point must be produced.</para>
-
- <para>One method is to apply a <quote>starter</quote> delta to
- an empty directory. A starter delta can be recognized by the
- <filename>XEmpty</filename> in its name, such as
- <filename>src-cur.3210XEmpty.gz</filename>. The designation
- following the <literal>X</literal> corresponds to the origin
- of the initial <quote>seed</quote>, where
- <filename>Empty</filename> is an empty directory. As a rule,
- a base transition from <literal>Empty</literal> is produced
- every 100 deltas. Be aware that starter deltas are large and
- 70 to 80 Megabytes of <command>gzip</command>'d data is common
- for the <filename>XEmpty</filename> deltas.</para>
-
- <para>Another method is to copy or extract an initial source
- from a RELEASE media as this can save a significant transfer
- of data from the Internet.</para>
-
- <para>Once a base delta has been created, apply all deltas with
- higher numbers. To apply the deltas:</para>
-
- <screen>&prompt.root; <userinput>cd /directory/to/store/the/stuff</userinput>
-&prompt.root; <userinput>ctm -v -v /directory/which/stores/the/deltas/src-xxx.*</userinput></screen>
-
- <para>Multiple deltas can be applied with a single command as
- they will be processed one at a time and any deltas that are
- already applied will be ignored.
- <application>CTM</application> understands
- <command>gzip</command> compressed deltas, which saves disk
- space.</para>
-
- <para>To verify a delta without applying it, include
- <option>-c</option> in the command line.
- <application>CTM</application> will not actually modify the
- local tree but will instead verify the integrity of the delta
- to see if it would apply cleanly. Refer to &man.ctm.1; for
- more information about available options and an overview of
- the process <application>CTM</application> uses when applying
- deltas.</para>
-
- <para>To keep the local source tree up-to-date, every time a
- new delta becomes available, apply it through
- <application>CTM</application>.</para>
-
- <para>Once applied, it is recommended to not delete the deltas
- if it is a burden to download them again. This way, a local
- copy is available in case it is needed for future disaster
- recovery.</para>
- </sect2>
-
- <sect2>
- <title>Keeping Local Changes</title>
-
- <para>Developers often experiment with and
- change files in their local source tree.
- <application>CTM</application> supports local modifications in
- a limited way: before checking for the presence of a file,
- it first looks for a file with the same name and a
- <filename>.ctm</filename> extension. If this file exists,
- <application>CTM</application> will operate on it instead of
- the original filename.</para>
-
- <para>This behavior provides a simple way to maintain local
- changes. Before modifying a file, make a copy with a
- <filename>.ctm</filename> suffix. Make any changes to the
- original filename, knowing that
- <application>CTM</application> will only apply updates to the
- file with the <filename>.ctm</filename> suffix.</para>
- </sect2>
-
- <sect2>
- <title>Other <application>CTM</application> Options</title>
-
- <variablelist>
- <varlistentry>
- <term>Finding Out Exactly What Would Be Touched by an
- Update</term>
-
- <listitem>
- <para>To determine the list of changes that
- <application>CTM</application> will make to the local
- source repository, use <option>-l</option>. This option
- is useful for creating logs of the changes or when
- performing pre- or post-processing on any of the
- modified files.</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term>Making Backups Before Updating</term>
-
- <listitem>
- <para>To backup all of the files that would be changed by
- a <application>CTM</application> update, specify
- <option>-B
- <replaceable>backup-file</replaceable></option>. This
- option tells <application>CTM</application> to backup
- all files touched by the applied
- <application>CTM</application> delta to
- <filename>backup-file</filename>.</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term>Restricting the Files Touched by an Update</term>
-
- <listitem>
- <para>To restrict the scope of a given
- <application>CTM</application> update, or to extract
- just a few files from a sequence of deltas, filtering
- regular expressions can be specified using
- <option>-e</option>, which specifies which files to
- process, or <option>-x</option>, which specifies which
- files to ignore.</para>
-
- <para>For example, to extract an up-to-date copy of
- <filename>lib/libc/Makefile</filename> from a collection
- of saved <application>CTM</application> deltas:</para>
-
- <screen>&prompt.root; <userinput>cd /directory/to/extract/to/</userinput>
-&prompt.root; <userinput>ctm -e '^lib/libc/Makefile' /directory/which/stores/the/deltas/src-xxx.*</userinput></screen>
-
- <para>For every file specified in a
- <application>CTM</application> delta,
- <option>-e</option> and <option>-x</option> are
- applied in the order given on the command line. A file
- is processed by <application>CTM</application> only if
- it is marked as eligible after all <option>-e</option>
- and <option>-x</option> options are applied.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </sect2>
-<!--
-Comment out for now until these can be verified.
- <sect2>
- <title>Future Plans for <application>CTM</application></title>
-
- <para>Tons of them:</para>
-
- <itemizedlist>
- <listitem>
- <para>Use some kind of authentication into the
- <application>CTM</application> system, so as to allow
- detection of spoofed <application>CTM</application>
- updates.</para>
- </listitem>
-
- <listitem>
- <para>Clean up the options to
- <application>CTM</application>, they became confusing and
- counter intuitive.</para>
- </listitem>
- </itemizedlist>
-
- <para>There is a sequence of deltas for the
- <literal>ports</literal> collection too, but interest has not
- been all that high yet.</para>
- </sect2>
- -->
- </sect1>
-
<sect1 xml:id="svn">
<title>Using <application>Subversion</application></title>
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