1130b656e5
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
51 lines
2.2 KiB
Plaintext
51 lines
2.2 KiB
Plaintext
<!-- $FreeBSD$ -->
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<!-- The FreeBSD Documentation Project -->
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<chapt><heading>Synchronizing source trees over the Internet<label id="synching"></heading>
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<p><em>Contributed by &a.jkh;.</em>
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<!--
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Last updated: $Date: 1996/12/31 21:54:24 $
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This document tries to describe the various ways in which a user may
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use the internet to keep development sources in synch.
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-->
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<p>There are various ways of using an Internet (or email) connection
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to stay up-to-date with any given area of the FreeBSD project sources,
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or all areas, depending on what interests you. The primary
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services we offer are CVSup and CTM.
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<p><bf>CVSup</bf> is the new kid on the block, it does everything that sup
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did and more, doing it also far more efficiently in terms of its demands
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on server disk space and network resources. Because of this, CVSup has
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largely replaced <ref id="sup"> in the FreeBSD Project. Like sup, it also
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operates on a <em>pull</em> synchronization model.
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<p><bf>CTM</bf>, on the other hand, does not interactively compare
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the sources you have with those on the master archive. Instead, a script
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which identifies changes in files since its previous run is executed several
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times a day on the master archive, any detected changes being compressed,
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stamped with a sequence-number and encoded for transmission over email
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(printable ASCII only). Once received, these "CTM deltas" can then be
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handed to the ctm_rmail(1) utility which will automatically decode, verify
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and apply the changes to the user's copy of the sources. This process is
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far more efficient than CVSup, and places less strain on our server resources
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since it is a <em>push</em> rather than a <em>pull</em> model.
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<p>There are other trade-offs, of course. With CVSup, you can also
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inadvertently wipe out portions of your archive and CVSup will detect
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and rebuild the damaged portions for you. CTM won't do this, and if
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you wipe some portion of your source tree out (and don't have it backed
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up) then you will have to start from scratch (from the most recent CVS
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"base delta") and rebuild it all.
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For more information on CTM, CVSup or the now largely-obsolete sup, please
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see one of the following sections:
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&ctm;
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&cvsup;
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⊃
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