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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> |
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<meta name="generator" content="Docutils 0.4: http://docutils.sourceforge.net/" /> |
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<title>GLEP 19 -- Gentoo Stable Portage Tree</title> |
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<link rel="stylesheet" href="tools/glep.css" type="text/css" /> |
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</head> |
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width="100%" border="0"> |
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<tr><td class="navicon" width="150" height="35"> |
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<a href="http://www.gentoo.org/" title="Gentoo Linux Home Page"> |
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<img src="http://www.gentoo.org/images/gentoo-new.gif" alt="[Gentoo]" |
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border="0" width="150" height="35" /></a></td> |
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<td class="textlinks" align="left"> |
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[<b><a href="http://www.gentoo.org/">Gentoo Linux Home</a></b>] |
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[<b><a href="http://www.gentoo.org/proj/en/glep">GLEP Index</a></b>] |
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[<b><a href="http://www.gentoo.org/proj/en/glep/glep-0019.txt">GLEP Source</a></b>] |
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</td></tr></table> |
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<table class="rfc2822 docutils field-list" frame="void" rules="none"> |
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<col class="field-name" /> |
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<col class="field-body" /> |
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<tbody valign="top"> |
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<tr class="field"><th class="field-name">GLEP:</th><td class="field-body">19</td> |
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</tr> |
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<tr class="field"><th class="field-name">Title:</th><td class="field-body">Gentoo Stable Portage Tree</td> |
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</tr> |
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<tr class="field"><th class="field-name">Version:</th><td class="field-body">1.8</td> |
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</tr> |
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<tr class="field"><th class="field-name">Last-Modified:</th><td class="field-body"><a class="reference" href="http://www.gentoo.org/cgi-bin/viewcvs.cgi/xml/htdocs/proj/en/glep/glep-0019.txt?cvsroot=gentoo">2006/10/10 16:54:34</a></td> |
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</tr> |
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<tr class="field"><th class="field-name">Author:</th><td class="field-body">Kurt Lieber <klieber at gentoo.org></td> |
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</tr> |
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<tr class="field"><th class="field-name">Status:</th><td class="field-body">Withdrawn</td> |
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</tr> |
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<tr class="field"><th class="field-name">Type:</th><td class="field-body">Standards Track</td> |
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</tr> |
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<tr class="field"><th class="field-name">Content-Type:</th><td class="field-body"><a class="reference" href="glep-0002.html">text/x-rst</a></td> |
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</tr> |
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<tr class="field"><th class="field-name">Created:</th><td class="field-body">26-Jan-2004</td> |
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</tr> |
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<tr class="field"><th class="field-name">Post-History:</th><td class="field-body">29-Jan-2004 2-Nov-2004 7-Dec-2004 10-Oct-2006</td> |
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</tr> |
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</tbody> |
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</table> |
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<hr /> |
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<div class="contents topic"> |
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<p class="topic-title first"><a id="contents" name="contents">Contents</a></p> |
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<ul class="simple"> |
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<li><a class="reference" href="#status" id="id3" name="id3">Status</a></li> |
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<li><a class="reference" href="#abstract" id="id4" name="id4">Abstract</a></li> |
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<li><a class="reference" href="#id1" id="id5" name="id5">Status</a></li> |
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<li><a class="reference" href="#motivation" id="id6" name="id6">Motivation</a></li> |
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<li><a class="reference" href="#specification" id="id7" name="id7">Specification</a></li> |
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<li><a class="reference" href="#rationale" id="id8" name="id8">Rationale</a></li> |
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<li><a class="reference" href="#implementation" id="id9" name="id9">Implementation</a></li> |
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<li><a class="reference" href="#backwards-compatibility" id="id10" name="id10">Backwards Compatibility</a></li> |
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<li><a class="reference" href="#copyright" id="id11" name="id11">Copyright</a></li> |
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</ul> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id3" id="status" name="status">Status</a></h1> |
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<p>Withdrawn by the author. "If someone wants to take up the torch, more |
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power to them, but they should probably start clean with a new glep."</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id4" id="abstract" name="abstract">Abstract</a></h1> |
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<p>This GLEP is intended to propose a series of changes to the Portage tree that |
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are necessary to facilitate the use of Gentoo in areas where stability and |
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predictability are of paramount importance, including servers in enterprise |
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environments, mission critical workstations and other such installations.</p> |
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<p>The proposed solution involves creating a separate tree in Portage that is |
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updated far less often than the regular tree. Outside of periodic updates, |
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this tree would only be updated with critical bugfixes and security patches.</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id5" id="id1" name="id1">Status</a></h1> |
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<p>Currently recruiting people who would be willing to help with this GLEP.</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id6" id="motivation" name="motivation">Motivation</a></h1> |
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<p>Enterprise users typically value stability and a predictable upgrade path |
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over having the latest packages or features available to them. Historically, |
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Gentoo Linux has been unable to provide such an environment due to the dynamic |
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nature of the Portage tree.</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id7" id="specification" name="specification">Specification</a></h1> |
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<p>The Gentoo Infrastructure team will need to provide an additional Portage tree |
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on our rsync mirroring system. This new tree will house the ebuilds |
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associated with the stable tree. It also impacts all Gentoo developers |
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responsible for creating and updating ebuilds as they will be expected to |
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integrate the tagging of ebuilds for the stable tree into their normal |
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development process, both for the quarterly release cycles as well as |
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off-cycle bug and security fixes.</p> |
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<p>The Gentoo Documentation team will also be affected as they will be |
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responsible for updating installation documents to take these new features |
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into account.</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id8" id="rationale" name="rationale">Rationale</a></h1> |
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<p>A basic outline of various ways of adding a "stable" tree to Portage was |
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discussed in the gentoo managers meeting on 26-Jan-04. Consensus seemed to be |
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reached that such a solution was needed and that branching the gentoo-x86 |
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repository was the appropriate way to accomplish this. The largest area of |
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disagreement surrounded how specific ebuilds should be targeted for inclusion |
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in the stable tree.</p> |
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<p>One suggested solution was a simple branch of the CVS tree and having |
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developers work in two separate branches; one for the stable tree and |
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another for the traditional tree. However, it was felt this would prove too |
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cumbersome in practice.</p> |
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<p>Another suggestion was to have a small group of dedicated gentoo-server |
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developers responsible for generating the contents of the stable tree, which |
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would provide more control and quality assurance over the ebuilds added to the |
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stable tree. While this might prove effective for a small number of ebuilds, |
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it is quite likely that this model would not scale enough to allow for a large |
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number of ebuilds in the stable tree and, over time, the project would become |
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resource constrained and unable to meed future deadlines.</p> |
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<p>While the original draft of this GLEP called for the creation of a stable |
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keyword, we have since discarded that idea in favor of creating a custom |
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profile, which will be used to track a subset of packages and versions.</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id9" id="implementation" name="implementation">Implementation</a></h1> |
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<p>This GLEP will create a new set of cascaded profiles (one per release, not to |
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exceed two per year) which will contain a subset of packages, including |
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versions. This profile will "pin" a Gentoo Linux box to a specific set of |
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packages and will only be updated for security updates and, in rare |
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circumstances, major bug fixes.</p> |
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<p>Because this profile will be cascaded, the option exists for other developers |
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to create their own profile, containing a subset of packages not found in the |
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"main" stable tree and include those as part of the overall stable profile. |
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These cases will be treated on a one-off basis.</p> |
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<p>The initial version will be x86 only, though other people will be encouraged |
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to provide separate stable profiles for other arches. It is expected that any |
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effort to provide a stable tree for any arch or flavor of Gentoo will follow |
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the basic outline of this GLEP to ensure consistency for our users.</p> |
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<p>In addition to a custom profile, this GLEP will also create a separate rsync |
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repository, "gentoo-stable-portage", which will be available on all servers in |
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the rsync.gentoo.org rotation. This repository will be <em>identical</em> to the |
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main gentoo-portage repository except that the --delete flag will be removed |
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from the rsync option that populates the tree. This will ensure that users of |
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the stable profile will not have to worry about ebuilds for their packages |
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disappearing.</p> |
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<p>Stable profiles will be maintained on an N - 2 basis. That is to say that we |
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will maintain a stable profile for the most current release, plus the previous |
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two releases. With the expected release schedule for 2005, this will result |
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in each profile being supported for approximately 18 months. Future versions |
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of the stable portage tree may seek to increase the life of these profiles.</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id10" id="backwards-compatibility" name="backwards-compatibility">Backwards Compatibility</a></h1> |
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<p>All features proposed here are new additions to existing processes and |
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features. There should be no impact on existing features and functionality.</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id11" id="copyright" name="copyright">Copyright</a></h1> |
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<p>This document is licensed under the Creative Commons - Attribution / Share |
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Alike license. (<a class="reference" href="http://creativecommons.org/licenses/by-sa/1.0">http://creativecommons.org/licenses/by-sa/1.0</a>)</p> |
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</div> |
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<div class="footer"> |
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<hr class="footer" /> |
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<a class="reference" href="glep-0019.txt">View document source</a>. |
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Generated on: 2007-10-13 13:39 UTC. |
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Generated by <a class="reference" href="http://docutils.sourceforge.net/">Docutils</a> from <a class="reference" href="http://docutils.sourceforge.net/rst.html">reStructuredText</a> source. |
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</div> |
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</body> |
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</html> |
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