Difference between pages "Install/pt-br/Portage" and "Pt-br/Metro"

< Install(Difference between pages)
(Introduzindo o Portage)
 
(Seeds and Build Isolation)
 
Line 1: Line 1:
=== Introduzindo o Portage ===
+
{{#layout:doc}}{{#widget:AddThis}}[[Metro]] é o build system para os stages Funtoo Linux e [[Gentoo Linux]]. Ele automatiza o processo de bootstrap.
  
Portage, o gerenciador de pacotes do Funtoo Linux possui um comando chamado <code>emerge</code> que é utilizado para construir e instalar pacotes a partir do código fonte. ele também cuida para instalar todas as dependências de pacotes. Você invoca o emerge assim:
+
Esse tutorial te guiará através da instalação, configuração e execução do [[Metro]].
 +
 
 +
Esses outros documentos do Metro também estão disponíveis:
 +
 
 +
{{#ask: [[Category:Metro]]
 +
|format=ul
 +
}}
 +
 
 +
= Preface =
 +
 
 +
== Como o Metro Funciona ==
 +
 
 +
Metro é um sistema de construção automática do Funtoo, e é utilizado para construir  os tarballs do Linux stage tarballs.
 +
 
 +
[[Metro]] Não pode gerar um stage tarball vazio. Para gerar um novo stage tarball, o [[Pt-br/Metro|Metro]] precisa utilizar um stage tarball antigo existente chamado de um "seed" stage. Esse seed stage tipicamente é utilizando como o ''ambiente build'' para a criação do stage que queremos.
 +
 
 +
O [[Metro]] pode utilizar dois tipos de seed stages. Tradicionalmente, o [[Pt-br/Metro|Metro]] tem utilizando um stage3 como um seed stage. Esse stage3 é então utilizado para construir um novo stage1, que por sua vez é utilizado para construir um novo stage2, e depois um novo stage3. Esse é geralmente o mais confiável meio de construir [[Gentoo Linux]] ou Funtoo Linux, assim ele é a aproximação recomendada.
 +
{{fancyimportant|'''Depois de carregar o metro builds no Funtoo profile, Gentoo stages não são mais fornecidos'''!}}
 +
 
 +
== Seeds e Build Isolation ==
 +
 
 +
um outro conceito importante a mencionar aqui é algo chamado de ''build isolation''. Porque o [[Pt-br/Metro|Metro]] gera um ambiente build isolado, e o ambiente build é explicitamente definido utilizando entidades tangíveis existentes -- um seed stage e um portage snapshot -- você obterá resultados repetíveis, consistentes. Em outras palavras, A mesma seed stage, portage snapshot e instruções de build gerarão um resultado essencialmente idêntico, mesmo se você desempenhar o build um mês depois na workstation de outra pessoa.
 +
 
 +
== Local Build ==
 +
 
 +
Say you wanted to build a new <tt>pentium4</tt> stage3 tarball. The recommended method of doing this would be to grab an existing <tt>pentium4</tt> stage3 tarball to use as your seed stage. [[Metro]] will be told to use this existing <tt>pentium4</tt> stage3 to build a new stage1 for the same <tt>pentium4</tt>. For this process, the generic <tt>pentium4</tt> stage3 would provide the ''build environment'' for creating our new stage1. Then, the new stage1 would serve as the build environment for creating the new <tt>pentium4</tt> stage2. And the new <tt>pentium4</tt> stage2 would serve as the build environment for creating the new <tt>pentium4</tt> stage3.
 +
 
 +
In the [[Metro]] terminology this is called a '''local build''', which means a stage3 of a given architecture is used to seed a brand new build of the same architecture. Incidentally this will be the first exercise we are going to perform in this tutorial.
 +
 
 +
A week later, you may want to build a brand new <tt>pentium4</tt> stage3 tarball. Rather than starting from the original <tt>pentium4</tt> stage3 again, you'd probably configure [[Metro]] to use the most-recently-built <tt>pentium4</tt> stage3 as the seed. [[Metro]] has built-in functionality to make this easy, allowing it to easily find and track the most recent stage3 seed available.
 +
 
 +
== Remote Build ==
 +
 
 +
[[Metro]] can also perform '''remote build''', where a stage3 of a different, but binary compatible, architecture is used as a seed to build a different architecture stage3. Consequentiality the second exercise we are going to perform in this tutorial will be to build a <tt>core2 32bit</tt> stage3 tarball from the <tt>pentium4</tt> stage3 tarball we have just built.
 +
 
 +
TODO: add caveats about what archs can be seeded and what can be not (maybe a table?)
 +
 
 +
== Tailored Build ==
 +
 
 +
Last, it's also worthy noting that both in <tt>local</tt> and <tt>remote builds</tt>, [[Metro]] can be configured to add and/or remove individual packages to the final tarball.
 +
Let's say you can't live without <tt>app-misc/screen</tt>, at the end of this tutorial, we will show how to have your tailored stage3 to include it.
 +
 
 +
== Installing Metro ==
 +
 
 +
'''The recommended and supported method''' is to use the Git repository of [[Metro]]. 
 +
 
 +
Ensure that {{Package|dev-vcs/git}} and {{Package|dev-python/boto}} (optional; required for EC2 support) are installed on your system:
  
 
<console>
 
<console>
(chroot) # ##i##emerge packagename
+
# ##i##emerge dev-vcs/git
 +
# ##i##emerge dev-python/boto
 
</console>
 
</console>
  
Quando você instala um pacote especificando seu nome na linha de comando, o Portage grava seu nome no arquivo <code>/var/lib/portage/world</code>. Ele faz assim por que ele assume que, desde que você tem instalado o pacote por nome, você quer considerá-lo parte do seu sistema e quer manter o pacote atualizado no futuro. Isso é recurso útil, desde quando pacotes estão sendo adicionados a configuração <code>world</code>, podemos atualizar nosso sistema inteiro ao digitar:
+
Next, clone the master git repository as follows:
  
 
<console>
 
<console>
(chroot) # ##i##emerge --sync
+
# ##i##cd /root
(chroot) # ##i##emerge -auDN @world
+
# ##i##git clone git://github.com/funtoo/metro.git
 +
# ##i##cp /root/metro/metro.conf ~/.metro
 
</console>
 
</console>
  
Esse é o modo "oficial" de atualizar o seu sistema Funtoo Linux. Acima, nós atualizamos nossa arvore Portage (Portage tree) utilizando o git para obter a ultima versão dos ebuilds (scripts), e depois executar um comando emerge para atualizar o conjunto de pacotes <code>world</code>. As opções especificadas diz ao <code>emerge</code> para:
+
You will now have a directory called <tt>/root/metro</tt> that contains all the [[Metro]] source code.
  
* '''<code>a</code>''' - Nos mostra o que será emergido (emerged), e nos '''perguntará''' se queremos prosseguir.
+
Metro is now installed. It's time to customize it for your local system.
* '''<code>u</code>''' - ''Atualiza'' os pacotes que especificarmos -- não emerja-os novamente se eles já estão emergidos.
+
* '''<code>D</code>''' - Considere a arvore de dependência inteira de pacotes quando procurar por atualizações. Em outras palavras, faça uma atualização '''profunda'''.
+
* '''<code>N</code>''' - Atualizar quaisquer pacotes que tenha alterado ('''novas''') configurações de USO.
+
  
Você deve também considerar passar <code>--with-bdeps=y</code> quando emergir @world, ao menos de vez em quando. Isso atualizará as build dependencies também.
+
= Configuring Metro =
  
Of course, sometimes we want to install a package but not add it to the <code>world</code> file. This is often done because you only want the package installed temporarily or because you know the package in question is a dependnecy of another package. If this behavior is desired, you call emerge like this:
+
{{Note|Metro is not currently able to build Gentoo stages. See {{Bug|FL-901}}.}}
  
 +
[[User:Drobbins|Daniel Robbins]] maintains [[Metro]], so it comes pre-configured to successfully build Funtoo Linux releases. Before reading further, you might want to customize some basic settings like the number of concurrent jobs to fit your hardware's capabilities or the directory to use for produced stage archives. This is accomplished by editing <tt>~/.metro</tt> which is the [[Metro]]'s master configuration file.
 +
 +
Please note that <code>path/install</code> must point to where metro was installed. Point <code>path/distfiles</code> to where your distfiles reside. Also set <code>path/mirror/owner</code> and <code>path/mirror/group</code> to the owner and group of all the files that will be written to the build repository directory, which by default (as per the configuration file) is at <code>/home/mirror/funtoo</code>. The cache directory normally resides inside the temp directory -- this can be modified as desired. The cache directory can end up holding many cached .tbz2 packages, and eat up a lot of storage. You may want to place the temp directory on faster storage, for faster compile times, and place the cache directory on slower, but more plentiful storage.
 +
 +
{{file|name=.metro|desc=Metro configuration|body=
 +
# Main metro configuration file - these settings need to be tailored to your install:
 +
 +
[section path]
 +
install: /root/metro
 +
tmp: /var/tmp/metro
 +
cache: $[path/tmp]/cache
 +
distfiles: /var/src/distfiles
 +
work: $[path/tmp]/work/$[target/build]/$[target/name]
 +
 +
[section path/mirror]
 +
 +
: /home/mirror/funtoo
 +
owner: root
 +
group: repomgr
 +
dirmode: 775
 +
 +
[section portage]
 +
 +
MAKEOPTS: auto
 +
 +
[section emerge]
 +
 +
options: --jobs=4 --load-average=4 --keep-going=n
 +
 +
# This line should not be modified:
 +
[collect $[path/install]/etc/master.conf]
 +
}}
 +
 +
== Arch and Subarch ==
 +
 +
In the following example we are creating a pentium4 stage 3 compiled for x86-32bit binary compatibility. Pentium4 is a subarch of the x86-32bit architecture. Once you have metro installed you may find a full list of each subarch in your <tt>/root/metro/subarch</tt> directory each subarch will have the file extension .spec
 +
Example:
 
<console>
 
<console>
(chroot) # ##i##emerge -1 packagename
+
###i## ls /root/metro/subarch
 +
# ls subarch/
 +
amd64-bulldozer-pure64.spec  armv7a.spec          core-avx-i.spec        i686.spec        pentium.spec
 +
amd64-bulldozer.spec        armv7a_hardfp.spec  core2_32.spec          k6-2.spec        pentium2.spec
 +
amd64-k10-pure64.spec        athlon-4.spec        core2_64-pure64.spec    k6-3.spec        pentium3.spec
 +
amd64-k10.spec              athlon-mp.spec      core2_64.spec          k6.spec          pentium4.spec
 +
amd64-k8+sse3.spec          athlon-tbird.spec    corei7-pure64.spec      native_32.spec    pentiumpro.spec
 +
amd64-k8+sse3_32.spec        athlon-xp.spec      corei7.spec            native_64.spec    prescott.spec
 +
amd64-k8-pure64.spec        athlon.spec          generic_32.spec        niagara.spec      ultrasparc.spec
 +
amd64-k8.spec                atom_32.spec        generic_64-pure64.spec  niagara2.spec    ultrasparc3.spec
 +
amd64-k8_32.spec            atom_64-pure64.spec  generic_64.spec        nocona.spec      xen-pentium4+sse3.spec
 +
armv5te.spec                atom_64.spec        generic_sparcv9.spec    opteron_64.spec  xen-pentium4+sse3_64.spec
 +
armv6j.spec                  btver1.spec          geode.spec              pentium-m.spec
 +
armv6j_hardfp.spec          btver1_64.spec      i486.spec              pentium-mmx.spec
 
</console>
 
</console>
  
Advanced users may be interested in the [[Emerge]] wiki page.
+
= First stages build (local build) =
  
==== Updating World ====
+
To get this all started, we need to bootstrap the process by downloading an initial seed stage3 to use for building and place it in its proper location in <tt>/home/mirror/funtoo</tt>, so that [[Metro]] can find it. We will also need to create some special &quot;control&quot; files in <tt>/home/mirror/funtoo</tt>, which will allow [[Metro]] to understand how it is supposed to proceed.
  
Now is actually a very good time to update the entire system and it can be a good idea to do so prior to first boot.
+
== Step 1: Set up pentium4 repository (local build) ==
 +
 
 +
Assuming we're following the basic steps outlined in the previous section, and building an unstable funtoo (<tt>funtoo-current</tt>) build for the <tt>pentium4</tt>, using a generic <tt>pentium4</tt> stage3 as a seed stage, then here the first set of steps we'd perform:
  
 
<console>
 
<console>
(chroot) # ##i##emerge --sync
+
# ##i##install -d /home/mirror/funtoo/funtoo-current/x86-32bit/pentium4
(chroot) # ##i##emerge -auDN @world
+
# ##i##install -d /home/mirror/funtoo/funtoo-current/snapshots
 +
# ##i##cd /home/metro/mirror/funtoo/funtoo-current/x86-32bit/pentium4
 +
# ##i##install -d 2011-12-13
 +
# ##i##cd 2011-12-13
 +
# ##i##wget -c http://ftp.osuosl.org/pub/funtoo/funtoo-current/x86-32bit/pentium4/2011-12-13/stage3-pentium4-funtoo-current-2011-12-13.tar.xz
 +
# ##i##cd ..
 +
# ##i##install -d .control/version
 +
# ##i##echo "2011-12-13" > .control/version/stage3
 +
# ##i##install -d .control/strategy
 +
# ##i##echo local >  .control/strategy/build
 +
# ##i##echo stage3 > .control/strategy/seed
 
</console>
 
</console>
  
{{fancyimportant|1=
+
OK, let's review the steps above. First, we create the directory <tt>/home/mirror/funtoo/funtoo-current/x86-32bit/pentium4</tt>, which is where Metro will expect to find unstable <tt>funtoo-current</tt> pentium4 builds -- it is configured to look here by default. Then we create a specially-named directory to house our seed x86 stage3. Again, by default, Metro expects the directory to be named this way. We enter this directory, and download our seed x86 stage3 from funtoo.org. Note that the <tt>2010-12-24</tt> version stamp matches. Make sure that your directory name matches the stage3 name too. Everything has been set up to match Metro's default filesystem layout.
Make sure you read any post emerge messages and follow their instructions. This is especially true if you have upgraded perl or python.}}
+
 
 +
Next, we go back to the <tt>/home/mirror/metro/funtoo-current/x86-32bit/pentium4</tt> directory, and inside it, we create a <tt>.control</tt> directory. This directory and its subdirectories contain special files that Metro references to determine certain aspects of its behavior. The <tt>.control/version/stage3</tt> file is used by Metro to track the most recently-built stage3 for this particular build and subarch. Metro will automatically update this file with a new version stamp after it successfully builds a new stage3. But because Metro didn't actually ''build'' this stage3, we need to set up the <tt>.control/version/stage3</tt> file manually. This will allow Metro to find our downloaded stage3 when we set up our pentium4 build to use it as a seed. Also note that Metro will create a similar <tt>.control/version/stage1</tt> file after it successfully builds an pentium4 funtoo-current stage1.
 +
 
 +
We also set up <tt>.control/strategy/build</tt> and <tt>.control/strategy/seed</tt> files with values of <tt>local</tt> and <tt>stage3</tt> respectively. These files define the building strategy Metro will use when we build pentium4 funtoo-current stages. With a build strategy of <tt>local</tt>, Metro will source its seed stage from funtoo-current pentium4, the current directory. And with a seed strategy of <tt>stage3</tt>, Metro will use a stage3 as a seed, and use this seed to build a new stage1, stage2 and stage3.
 +
 
 +
== Step 2: Building the pentium4 stages ==
 +
 
 +
Incidentally, if all you wanted to do at this point was to build a new pentium4 funtoo-current stage1/2/3 (plus openvz and vserver templates). You would begin the process by typing:
 +
 
 +
<console>
 +
# ##i##cd /root/metro
 +
# ##i##scripts/ezbuild.sh funtoo-current pentium4
 +
</console>
 +
 
 +
If you have a slow machine, it could take several hours to be completed because several "heavy" components like gcc or glibc have to be recompiled in each stage. Once a stage has been successfully completed, it is placed in the <tt>"${METRO_MIRROR}/funtoo-current/x32-bit/pentium4/YYYY-MM-DD"</tt> subdirectory, where <tt>YYYY-MM-DD</tt> is today's date at the time the <tt>ezbuild.sh</tt> script was started or the date you put on the ezscript.sh command line.
 +
 
 +
= Building for another binary compatible architecture (remote build) =
 +
 
 +
As written above, [[Metro]] is able to perform '''remote build''' building different architecture stage3 from a binary compatible seeding stage3 (e.g. using a pentium4 stage3 to seed a <tt>Intel Core2 32bits</tt> stage3).
 +
 
 +
In the Metro terminology this is called a '''remote build''' (a stage 3 of a different, but binary compatible, architecture is used as a seed).
 +
What's not compatible? You can't use a <tt>Sparc</tt> architecture to generate an <tt>x86</tt> or <tt>ARM</tt> based stage and vice-versa. If you use a 32bit stage then you don't want to seed a 64bit build from it. Be sure that you are using a stage from the same architecture that you are trying to seed. Check [http://ftp.osuosl.org/pub/funtoo/funtoo-current/ Funtoo-current FTP Mirror] for a stage that is from the same Architecture that you will be building. 
 +
 
 +
{{Note|Often, one build (ie. funtoo-current) can be used as a seed for another build such as funtoo-stable. However, hardened builds require hardened stages as seeds in order for the build to complete successfully.}}
 +
 
 +
== Step 1: Set up Core_2 32bit repository ==
 +
 
 +
In this example, we're going to use this pentium4 funtoo-current stage3 to seed a new Core_2 32bit funtoo-current build. To get that done, we need to set up the pentium4 build directory as follows:
 +
 
 +
<console>
 +
# ##i## cd /home/mirror/funtoo/funtoo-current/x86-32bit
 +
# ##i##install -d core2_32
 +
# ##i##cd core2_32
 +
# ##i##install -d .control/strategy
 +
# ##i##echo remote > .control/strategy/build
 +
# ##i##echo stage3 > .control/strategy/seed
 +
# ##i##install -d .control/remote
 +
# ##i##echo funtoo-current > .control/remote/build
 +
# ##i##echo x86-32bit > .control/remote/arch_desc
 +
# ##i##echo pentium4 > .control/remote/subarch
 +
</console>
 +
 
 +
The steps we follow are similar to those we performed for a ''local build'' to set up our pentium4 directory for local build. However, note the differences. We didn't download a stage, because we are going to use the pentium4 stage to build a new Core_2 32bit stage. We also didn't create the <tt>.control/version/stage{1,3}</tt> files because Metro will create them for us after it successfully builds a new stage1 and stage3. We are still using a <tt>stage3</tt> seed strategy, but we've set the build strategy to <tt>remote</tt>, which means that we're going to use a seed stage that's not from this particular subdirectory. Where are we going to get it from? The <tt>.control/remote</tt> directory contains this information, and lets Metro know that it should look for its seed stage3 in the <tt>/home/mirror/funtoo/funtoo-current/x86-32bit/pentium4</tt> directory. Which one will it grab? You guessed it -- the most recently built ''stage3'' (since our seed strategy was set to <tt>stage3</tt>) that has the version stamp of <tt>2010-12-24</tt>, as recorded in <tt>/home/mirror/funtoo-current/x86-32bit/pentium4/.control/version/stage</tt>. Now you can see how all those control files come together to direct Metro to do the right thing.
 +
 
 +
{{Note|<code>arch_desc</code> should be set to one of: <code>x86-32bit</code>, <code>x86-64bit</code> or <code>pure64</code> for PC-compatible systems. You must use a 32-bit build as a seed for other 32-bit builds, and a 64-bit build as a seed for other 64-bit builds.}}
 +
 
 +
== Step 2: Building the Core_2 32bit stages ==
 +
 
 +
Now, you could start building your new Core_2 32bit stage1/2/3 (plus openvz and vserver templates) by typing the following:
 +
 
 +
<console>
 +
# ##i##/root/metro/scripts/ezbuild.sh funtoo-current core2_32
 +
</console>
 +
 
 +
In that case, the produced stages are placed in the <tt>/home/mirror/funtoo/funtoo-current/x32-bit/core2_32/YYYY-MM-DD</tt> subdirectory.
 +
 
 +
== Step 3: The Next Build ==
 +
 
 +
At this point, you now have a new Core_2 32bit stage3, built using a "remote" pentium4 stage3. Once the first remote build completes successfully, metro will automatically change <code>.control/strategy/build</code> to be <code>local</code> instead of <code>remote</code>, so it will use the most recently-built Core_2 32bit stage3 as a seed for any new Core_2 32bit builds from now on.
 +
 
 +
= Build your own tailored stage3 =
 +
 
 +
Metro can be easily configured for building custom stage3 by including additional packages. Edit the following configuration file <tt>/root/metro/etc/builds/funtoo-current/build.conf</tt>:
 +
{{file|name=funtoo-current/build.conf|body=
 +
[collect ../../fslayouts/funtoo/layout.conf]
 +
 
 +
[section release]
 +
 
 +
author: Daniel Robbins <drobbins@funtoo.org>
 +
 
 +
[section target]
 +
 
 +
compression: xz
 +
 
 +
[section portage]
 +
 
 +
FEATURES:
 +
SYNC: $[snapshot/source/remote]
 +
USE:
 +
 
 +
[section profile]
 +
 
 +
format: new
 +
path: gentoo:funtoo/1.0/linux-gnu
 +
arch: $[:path]/arch/$[target/arch_desc]
 +
build: $[:path]/build/current
 +
flavor: $[:path]/flavor/core
 +
mix-ins:
 +
 
 +
[section version]
 +
 
 +
python: 2.7
 +
 
 +
[section emerge]
 +
 
 +
 
 +
[section snapshot]
 +
 
 +
type: live
 +
compression: xz
 +
 
 +
[section snapshot/source]
 +
 
 +
type: git
 +
branch: funtoo.org
 +
# branch to have checked out for tarball:
 +
branch/tar: origin/master
 +
name: ports-2012
 +
remote: git://github.com/funtoo/ports-2012.git
 +
options: pull
 +
 
 +
[section metro]
 +
 
 +
options:
 +
options/stage: cache/package
 +
target: gentoo
 +
 
 +
[section baselayout]
 +
 
 +
services: sshd
 +
 
 +
[section multi]
 +
 
 +
snapshot: snapshot
 +
 
 +
[section files]
 +
 
 +
motd/trailer: [
 +
 
 +
>>> Send suggestions, improvements, bug reports relating to...
 +
 
 +
>>> This release:                  $[release/author]
 +
>>> Funtoo Linux (general):        Funtoo Linux (http://www.funtoo.org)
 +
>>> Gentoo Linux (general):        Gentoo Linux (http://www.gentoo.org)
 +
]
 +
 
 +
[collect ../../multi-targets/$[multi/mode:zap]]
 +
}}
 +
 
 +
= Building Gentoo stages =
 +
 
 +
Metro can also build Gentoo stages.  After switching to Funtoo profile, see http://www.funtoo.org/Funtoo_Profiles metro require additional steps for this. We have an open bug for this -- it is simply due to the fact that we focus on ensuring Funtoo Linux builds and building Gentoo is a lower priority. Historical note: Funtoo Linux originally started as a fork of Gentoo Linux so that metro could reliably build Gentoo stages.
 +
http://www.funtoo.org/Funtoo_Profiles
 +
 
 +
= Advanced Features =
 +
 
 +
Metro also includes a number of advanced features that can be used to automate builds and set up distributed build servers. These features require you to {{c|emerge sqlalchemy}}, as SQLite is used as a dependency.
 +
 
 +
== Repository Management ==
 +
 
 +
Metro includes a script in the {{c|scripts}} directory called {{c|buildrepo}}. Buildrepo serves as the heart of Metro's advanced repository management features.
 +
 
 +
=== Initial Setup ===
 +
 
 +
To use {{c|buildrepo}}, you will first need to create a {{f|.buildbot}} configuration file. Here is the file I use on my AMD Jaguar build server:
 +
 
 +
{{file|name=/root/.buildbot|lang=python|body=
 +
builds = (
 +
"funtoo-current",
 +
"funtoo-current-hardened",
 +
"funtoo-stable",
 +
)
 +
 
 +
arches = (
 +
"x86-64bit",
 +
"pure64"
 +
)
 +
 
 +
subarches = (
 +
"amd64-jaguar",
 +
"amd64-jaguar-pure64",
 +
)
 +
 
 +
def map_build(build, subarch, full, full_date):
 +
# arguments refer to last build...
 +
if full == True:
 +
buildtype =  ( "freshen", )
 +
else:
 +
buildtype =  ("full", )
 +
return buildtype
 +
}}
 +
 
 +
This file is actually a python source file that defines the tuples {{c|builds}}, {{c|arches}} and {{c|subarches}}. These variables tell {{c|buildrepo}} which builds, arches and subarches it should manage. A {{c|map_build()}} function is also defined which {{c|buildbot}} uses to determine what kind of build to perform. The arguments passed to the function are based on the last successful build. The function can read these arguments and return a string to define the type of the next build. In the above example, the {{c|map_build()}} function will cause the next build after a freshen build to be a full build, and the next build after a full build to be a freshen build, so that the build will alternate between full and freshen.
 +
 
 +
== Automated Builds ==
 +
 
 +
Once the {{c|.buildbot}} file has been created, the {{c|buildrepo}} and {{c|buildbot.sh}} tools are ready to use. Here's how they work. These tools are designed to keep your repository ({{c|path/mirror}} in {{f|/root/.metro}} up-to-date by inspecting your repository and looking for stages that are out-of-date.
 +
 
 +
To list the next build that will be performed, do this -- this is from my ARM build server:
 +
 
 +
{{console|body=
 +
# ##i##./buildrepo nextbuild
 +
build=funtoo-current
 +
arch_desc=arm-32bit
 +
subarch=armv7a_hardfp
 +
fulldate=2015-02-08
 +
nextdate=2015-02-20
 +
failcount=0
 +
target=full
 +
extras=''
 +
}}
 +
 
 +
If no output is displayed, then all your builds are up-to-date.
 +
 
 +
To actually run the next build, run {{c|buildbot.sh}}:
 +
 
 +
{{console|body=
 +
# ##i##./buildbot.sh
 +
}}
 +
 
 +
If you're thinking that {{c|buildbot.sh}} would be a good candidate for a cron job, you've got the right idea!
 +
 
 +
=== List Builds ===
 +
 
 +
To get a quick look at our repository, let's run the {{c|buildrepo fails}} command:
 +
 
 +
{{console|body=
 +
# ##i##./buildrepo fails
 +
  0  2015-02-18 /home/mirror/funtoo/funtoo-current/x86-64bit/amd64-jaguar
 +
  0  2015-02-18 /home/mirror/funtoo/funtoo-current/pure64/amd64-jaguar-pure64
 +
  0  2015-02-18 /home/mirror/funtoo/funtoo-current-hardened/x86-64bit/amd64-jaguar
 +
  0  2015-02-18 /home/mirror/funtoo/funtoo-current-hardened/pure64/amd64-jaguar-pure64
 +
  0  2015-02-18 /home/mirror/funtoo/funtoo-stable/x86-64bit/amd64-jaguar
 +
  0  2015-02-18 /home/mirror/funtoo/funtoo-stable/pure64/amd64-jaguar-pure64
 +
}}
 +
 
 +
On my AMD Jaguar build server, on Feb 20, 2015, this lists all the builds that {{c|buildrepo}} has been configured to manage. The first number on each line is a '''failcount''', which is the number of consecutive times that the build has failed. A zero value indicates that everything's okay. The failcount is an important feature of the advanced repository management features. Here are a number of behaviors that are implemented based on failcount:
 +
 
 +
* If {{c|buildbot.sh}} tries to build a stage and the build fails, the failcount is incremented.
 +
* If the build succeeds for a particular build, the failcount is reset to zero.
 +
* Builds with the lowest failcount are prioritized by {{buildrepo}} to build next, to steer towards builds that are more likely to complete successfully.
 +
* Once the failcount reaches 3 for a particular build, it is removed from the build rotation.
 +
 
 +
=== Resetting Failcount ===
 +
 
 +
If a build has issues, the failcount for a build will reach 3, at which point it will be pulled out of build rotation. To clear failcount, so that these builds are attempted again -- possibly fixed by new updates to the Portage tree -- use {{c|buildrepo zap}}:
 +
 
 +
{{console|body=
 +
# /root/metro/scripts/buildrepo zap
 +
Removing /mnt/data/funtoo/funtoo-current/arm-32bit/armv7a_hardfp/.control/.failcount...
 +
Removing /mnt/data/funtoo/funtoo-current/arm-32bit/armv6j_hardfp/.control/.failcount...
 +
Removing /mnt/data/funtoo/funtoo-current/arm-32bit/armv5te/.control/.failcount...
 +
}}
 +
 
 +
== Repository Maintenance ==
 +
 
 +
A couple of repository maintenance tools are provided:
 +
 
 +
* {{c|buildrepo digestgen}} will generate hash files for the archives in your repository, and clean up stale hashes.
 +
* {{c|buildrepo index.xml}} will create an index.xml file at the root of your repository, listing all builds available.
 +
* {{c|buildrepo clean}} will output a shell script that will remove old stages. No more than the three most recent stage builds for each build/arch/subarch are kept.
 +
 
 +
== Distributed Repositories ==
 +
 
 +
In many situation, you will have a number of build servers, and each will build a subset of your master repository, and then upload builds to the master repository. This is an area of Metro that is being actively developed. For now, automated upload functionality is not enabled, but is expected to be implemented in the relatively near future. However, it is possible to have your master repository differentiate between subarches that are built locally, and thus should be part of that system's {{c|buildbot}} build rotation, and those that are stored locally and built remotely. These builds should be cleaned when {{c|buildrepo clean}} is run, but should not enter the local build rotation. To set this up, modify {{f|/root/.buildbot}} and use the {{c|subarches}} and {{c|all_subarches}} variables:
 +
 
 +
{{file|name=/root/.metro|desc=Excerpt of .metro config for master repository|body=
 +
# subarches we are building locally:
 +
 
 +
subarches = (
 +
        "pentium4",
 +
        "athlon-xp",
 +
        "corei7",
 +
        "corei7-pure64",
 +
        "generic_32",
 +
        "i686",
 +
        "amd64-k8",
 +
        "amd64-k8-pure64",
 +
        "core2_64",
 +
        "core2_64-pure64",
 +
        "generic_64",
 +
        "generic_64-pure64",
 +
)
 +
 
 +
# Things we need to clean, even if we may not be building:
 +
 
 +
all_subarches = subarches + (
 +
        "atom_32",
 +
        "atom_64",
 +
        "atom_64-pure64",
 +
        "amd64-k10",
 +
        "amd64-k10-pure64",
 +
        "amd64-bulldozer",
 +
        "amd64-bulldozer-pure64",
 +
        "amd64-steamroller",
 +
        "amd64-steamroller-pure64",
 +
        "amd64-piledriver",
 +
        "amd64-piledriver-pure64",
 +
        "amd64-jaguar",
 +
        "amd64-jaguar-pure64",
 +
        "intel64-haswell",
 +
        "intel64-haswell-pure64",
 +
        "intel64-ivybridge-pure64",
 +
        "intel64-ivybridge",
 +
        "armv7a_hardfp",
 +
        "armv6j_hardfp",
 +
        "armv5te"
 +
)
 +
}}
 +
 
 +
[[Category:HOWTO]]
 +
[[Category:Metro]]
 +
__TOC__

Revision as of 23:46, May 9, 2015

Metro é o build system para os stages Funtoo Linux e Gentoo Linux. Ele automatiza o processo de bootstrap.

Esse tutorial te guiará através da instalação, configuração e execução do Metro.

Esses outros documentos do Metro também estão disponíveis:


Preface

Como o Metro Funciona

Metro é um sistema de construção automática do Funtoo, e é utilizado para construir os tarballs do Linux stage tarballs.

Metro Não pode gerar um stage tarball vazio. Para gerar um novo stage tarball, o Metro precisa utilizar um stage tarball antigo existente chamado de um "seed" stage. Esse seed stage tipicamente é utilizando como o ambiente build para a criação do stage que queremos.

O Metro pode utilizar dois tipos de seed stages. Tradicionalmente, o Metro tem utilizando um stage3 como um seed stage. Esse stage3 é então utilizado para construir um novo stage1, que por sua vez é utilizado para construir um novo stage2, e depois um novo stage3. Esse é geralmente o mais confiável meio de construir Gentoo Linux ou Funtoo Linux, assim ele é a aproximação recomendada.

Important

Depois de carregar o metro builds no Funtoo profile, Gentoo stages não são mais fornecidos!

Seeds e Build Isolation

um outro conceito importante a mencionar aqui é algo chamado de build isolation. Porque o Metro gera um ambiente build isolado, e o ambiente build é explicitamente definido utilizando entidades tangíveis existentes -- um seed stage e um portage snapshot -- você obterá resultados repetíveis, consistentes. Em outras palavras, A mesma seed stage, portage snapshot e instruções de build gerarão um resultado essencialmente idêntico, mesmo se você desempenhar o build um mês depois na workstation de outra pessoa.

Local Build

Say you wanted to build a new pentium4 stage3 tarball. The recommended method of doing this would be to grab an existing pentium4 stage3 tarball to use as your seed stage. Metro will be told to use this existing pentium4 stage3 to build a new stage1 for the same pentium4. For this process, the generic pentium4 stage3 would provide the build environment for creating our new stage1. Then, the new stage1 would serve as the build environment for creating the new pentium4 stage2. And the new pentium4 stage2 would serve as the build environment for creating the new pentium4 stage3.

In the Metro terminology this is called a local build, which means a stage3 of a given architecture is used to seed a brand new build of the same architecture. Incidentally this will be the first exercise we are going to perform in this tutorial.

A week later, you may want to build a brand new pentium4 stage3 tarball. Rather than starting from the original pentium4 stage3 again, you'd probably configure Metro to use the most-recently-built pentium4 stage3 as the seed. Metro has built-in functionality to make this easy, allowing it to easily find and track the most recent stage3 seed available.

Remote Build

Metro can also perform remote build, where a stage3 of a different, but binary compatible, architecture is used as a seed to build a different architecture stage3. Consequentiality the second exercise we are going to perform in this tutorial will be to build a core2 32bit stage3 tarball from the pentium4 stage3 tarball we have just built.

TODO: add caveats about what archs can be seeded and what can be not (maybe a table?)

Tailored Build

Last, it's also worthy noting that both in local and remote builds, Metro can be configured to add and/or remove individual packages to the final tarball. Let's say you can't live without app-misc/screen, at the end of this tutorial, we will show how to have your tailored stage3 to include it.

Installing Metro

The recommended and supported method is to use the Git repository of Metro.

Ensure that Git and dev-python/boto (package not on wiki - please add) (optional; required for EC2 support) are installed on your system:

# emerge dev-vcs/git
# emerge dev-python/boto

Next, clone the master git repository as follows:

# cd /root
# git clone git://github.com/funtoo/metro.git
# cp /root/metro/metro.conf ~/.metro

You will now have a directory called /root/metro that contains all the Metro source code.

Metro is now installed. It's time to customize it for your local system.

Configuring Metro

Note

Metro is not currently able to build Gentoo stages. See FL-901.

Daniel Robbins maintains Metro, so it comes pre-configured to successfully build Funtoo Linux releases. Before reading further, you might want to customize some basic settings like the number of concurrent jobs to fit your hardware's capabilities or the directory to use for produced stage archives. This is accomplished by editing ~/.metro which is the Metro's master configuration file.

Please note that path/install must point to where metro was installed. Point path/distfiles to where your distfiles reside. Also set path/mirror/owner and path/mirror/group to the owner and group of all the files that will be written to the build repository directory, which by default (as per the configuration file) is at /home/mirror/funtoo. The cache directory normally resides inside the temp directory -- this can be modified as desired. The cache directory can end up holding many cached .tbz2 packages, and eat up a lot of storage. You may want to place the temp directory on faster storage, for faster compile times, and place the cache directory on slower, but more plentiful storage.

.metro - Metro configuration
# Main metro configuration file - these settings need to be tailored to your install:

[section path]
install: /root/metro
tmp: /var/tmp/metro
cache: $[path/tmp]/cache
distfiles: /var/src/distfiles
work: $[path/tmp]/work/$[target/build]/$[target/name]

[section path/mirror]

: /home/mirror/funtoo
owner: root
group: repomgr
dirmode: 775

[section portage]

MAKEOPTS: auto 

[section emerge]

options: --jobs=4 --load-average=4 --keep-going=n

# This line should not be modified:
[collect $[path/install]/etc/master.conf]

Arch and Subarch

In the following example we are creating a pentium4 stage 3 compiled for x86-32bit binary compatibility. Pentium4 is a subarch of the x86-32bit architecture. Once you have metro installed you may find a full list of each subarch in your /root/metro/subarch directory each subarch will have the file extension .spec Example:

# ls /root/metro/subarch
# ls subarch/
amd64-bulldozer-pure64.spec  armv7a.spec          core-avx-i.spec         i686.spec         pentium.spec
amd64-bulldozer.spec         armv7a_hardfp.spec   core2_32.spec           k6-2.spec         pentium2.spec
amd64-k10-pure64.spec        athlon-4.spec        core2_64-pure64.spec    k6-3.spec         pentium3.spec
amd64-k10.spec               athlon-mp.spec       core2_64.spec           k6.spec           pentium4.spec
amd64-k8+sse3.spec           athlon-tbird.spec    corei7-pure64.spec      native_32.spec    pentiumpro.spec
amd64-k8+sse3_32.spec        athlon-xp.spec       corei7.spec             native_64.spec    prescott.spec
amd64-k8-pure64.spec         athlon.spec          generic_32.spec         niagara.spec      ultrasparc.spec
amd64-k8.spec                atom_32.spec         generic_64-pure64.spec  niagara2.spec     ultrasparc3.spec
amd64-k8_32.spec             atom_64-pure64.spec  generic_64.spec         nocona.spec       xen-pentium4+sse3.spec
armv5te.spec                 atom_64.spec         generic_sparcv9.spec    opteron_64.spec   xen-pentium4+sse3_64.spec
armv6j.spec                  btver1.spec          geode.spec              pentium-m.spec
armv6j_hardfp.spec           btver1_64.spec       i486.spec               pentium-mmx.spec

First stages build (local build)

To get this all started, we need to bootstrap the process by downloading an initial seed stage3 to use for building and place it in its proper location in /home/mirror/funtoo, so that Metro can find it. We will also need to create some special "control" files in /home/mirror/funtoo, which will allow Metro to understand how it is supposed to proceed.

Step 1: Set up pentium4 repository (local build)

Assuming we're following the basic steps outlined in the previous section, and building an unstable funtoo (funtoo-current) build for the pentium4, using a generic pentium4 stage3 as a seed stage, then here the first set of steps we'd perform:

# install -d /home/mirror/funtoo/funtoo-current/x86-32bit/pentium4
# install -d /home/mirror/funtoo/funtoo-current/snapshots
# cd /home/metro/mirror/funtoo/funtoo-current/x86-32bit/pentium4
# install -d 2011-12-13
# cd 2011-12-13
# wget -c http://ftp.osuosl.org/pub/funtoo/funtoo-current/x86-32bit/pentium4/2011-12-13/stage3-pentium4-funtoo-current-2011-12-13.tar.xz
# cd ..
# install -d .control/version
# echo "2011-12-13" > .control/version/stage3
# install -d .control/strategy
# echo local >  .control/strategy/build
# echo stage3 > .control/strategy/seed

OK, let's review the steps above. First, we create the directory /home/mirror/funtoo/funtoo-current/x86-32bit/pentium4, which is where Metro will expect to find unstable funtoo-current pentium4 builds -- it is configured to look here by default. Then we create a specially-named directory to house our seed x86 stage3. Again, by default, Metro expects the directory to be named this way. We enter this directory, and download our seed x86 stage3 from funtoo.org. Note that the 2010-12-24 version stamp matches. Make sure that your directory name matches the stage3 name too. Everything has been set up to match Metro's default filesystem layout.

Next, we go back to the /home/mirror/metro/funtoo-current/x86-32bit/pentium4 directory, and inside it, we create a .control directory. This directory and its subdirectories contain special files that Metro references to determine certain aspects of its behavior. The .control/version/stage3 file is used by Metro to track the most recently-built stage3 for this particular build and subarch. Metro will automatically update this file with a new version stamp after it successfully builds a new stage3. But because Metro didn't actually build this stage3, we need to set up the .control/version/stage3 file manually. This will allow Metro to find our downloaded stage3 when we set up our pentium4 build to use it as a seed. Also note that Metro will create a similar .control/version/stage1 file after it successfully builds an pentium4 funtoo-current stage1.

We also set up .control/strategy/build and .control/strategy/seed files with values of local and stage3 respectively. These files define the building strategy Metro will use when we build pentium4 funtoo-current stages. With a build strategy of local, Metro will source its seed stage from funtoo-current pentium4, the current directory. And with a seed strategy of stage3, Metro will use a stage3 as a seed, and use this seed to build a new stage1, stage2 and stage3.

Step 2: Building the pentium4 stages

Incidentally, if all you wanted to do at this point was to build a new pentium4 funtoo-current stage1/2/3 (plus openvz and vserver templates). You would begin the process by typing:

# cd /root/metro
# scripts/ezbuild.sh funtoo-current pentium4

If you have a slow machine, it could take several hours to be completed because several "heavy" components like gcc or glibc have to be recompiled in each stage. Once a stage has been successfully completed, it is placed in the "${METRO_MIRROR}/funtoo-current/x32-bit/pentium4/YYYY-MM-DD" subdirectory, where YYYY-MM-DD is today's date at the time the ezbuild.sh script was started or the date you put on the ezscript.sh command line.

Building for another binary compatible architecture (remote build)

As written above, Metro is able to perform remote build building different architecture stage3 from a binary compatible seeding stage3 (e.g. using a pentium4 stage3 to seed a Intel Core2 32bits stage3).

In the Metro terminology this is called a remote build (a stage 3 of a different, but binary compatible, architecture is used as a seed). What's not compatible? You can't use a Sparc architecture to generate an x86 or ARM based stage and vice-versa. If you use a 32bit stage then you don't want to seed a 64bit build from it. Be sure that you are using a stage from the same architecture that you are trying to seed. Check Funtoo-current FTP Mirror for a stage that is from the same Architecture that you will be building.

Note

Often, one build (ie. funtoo-current) can be used as a seed for another build such as funtoo-stable. However, hardened builds require hardened stages as seeds in order for the build to complete successfully.

Step 1: Set up Core_2 32bit repository

In this example, we're going to use this pentium4 funtoo-current stage3 to seed a new Core_2 32bit funtoo-current build. To get that done, we need to set up the pentium4 build directory as follows:

#  cd /home/mirror/funtoo/funtoo-current/x86-32bit
# install -d core2_32
# cd core2_32
# install -d .control/strategy
# echo remote > .control/strategy/build
# echo stage3 > .control/strategy/seed
# install -d .control/remote
# echo funtoo-current > .control/remote/build
# echo x86-32bit > .control/remote/arch_desc
# echo pentium4 > .control/remote/subarch

The steps we follow are similar to those we performed for a local build to set up our pentium4 directory for local build. However, note the differences. We didn't download a stage, because we are going to use the pentium4 stage to build a new Core_2 32bit stage. We also didn't create the .control/version/stage{1,3} files because Metro will create them for us after it successfully builds a new stage1 and stage3. We are still using a stage3 seed strategy, but we've set the build strategy to remote, which means that we're going to use a seed stage that's not from this particular subdirectory. Where are we going to get it from? The .control/remote directory contains this information, and lets Metro know that it should look for its seed stage3 in the /home/mirror/funtoo/funtoo-current/x86-32bit/pentium4 directory. Which one will it grab? You guessed it -- the most recently built stage3 (since our seed strategy was set to stage3) that has the version stamp of 2010-12-24, as recorded in /home/mirror/funtoo-current/x86-32bit/pentium4/.control/version/stage. Now you can see how all those control files come together to direct Metro to do the right thing.

Note

arch_desc should be set to one of: x86-32bit, x86-64bit or pure64 for PC-compatible systems. You must use a 32-bit build as a seed for other 32-bit builds, and a 64-bit build as a seed for other 64-bit builds.

Step 2: Building the Core_2 32bit stages

Now, you could start building your new Core_2 32bit stage1/2/3 (plus openvz and vserver templates) by typing the following:

# /root/metro/scripts/ezbuild.sh funtoo-current core2_32

In that case, the produced stages are placed in the /home/mirror/funtoo/funtoo-current/x32-bit/core2_32/YYYY-MM-DD subdirectory.

Step 3: The Next Build

At this point, you now have a new Core_2 32bit stage3, built using a "remote" pentium4 stage3. Once the first remote build completes successfully, metro will automatically change .control/strategy/build to be local instead of remote, so it will use the most recently-built Core_2 32bit stage3 as a seed for any new Core_2 32bit builds from now on.

Build your own tailored stage3

Metro can be easily configured for building custom stage3 by including additional packages. Edit the following configuration file /root/metro/etc/builds/funtoo-current/build.conf:

funtoo-current/build.conf
[collect ../../fslayouts/funtoo/layout.conf]

[section release]

author: Daniel Robbins <drobbins@funtoo.org>

[section target]

compression: xz

[section portage]

FEATURES: 
SYNC: $[snapshot/source/remote]
USE:

[section profile]

format: new
path: gentoo:funtoo/1.0/linux-gnu
arch: $[:path]/arch/$[target/arch_desc]
build: $[:path]/build/current
flavor: $[:path]/flavor/core
mix-ins:

[section version]

python: 2.7

[section emerge]


[section snapshot]

type: live
compression: xz

[section snapshot/source]

type: git
branch: funtoo.org
# branch to have checked out for tarball:
branch/tar: origin/master
name: ports-2012 
remote: git://github.com/funtoo/ports-2012.git
options: pull

[section metro]

options: 
options/stage: cache/package
target: gentoo

[section baselayout]

services: sshd

[section multi]

snapshot: snapshot

[section files]

motd/trailer: [

 >>> Send suggestions, improvements, bug reports relating to...

 >>> This release:                  $[release/author]
 >>> Funtoo Linux (general):        Funtoo Linux (http://www.funtoo.org)
 >>> Gentoo Linux (general):        Gentoo Linux (http://www.gentoo.org)
]

[collect ../../multi-targets/$[multi/mode:zap]]

Building Gentoo stages

Metro can also build Gentoo stages. After switching to Funtoo profile, see http://www.funtoo.org/Funtoo_Profiles metro require additional steps for this. We have an open bug for this -- it is simply due to the fact that we focus on ensuring Funtoo Linux builds and building Gentoo is a lower priority. Historical note: Funtoo Linux originally started as a fork of Gentoo Linux so that metro could reliably build Gentoo stages. http://www.funtoo.org/Funtoo_Profiles

Advanced Features

Metro also includes a number of advanced features that can be used to automate builds and set up distributed build servers. These features require you to emerge sqlalchemy, as SQLite is used as a dependency.

Repository Management

Metro includes a script in the scripts directory called buildrepo. Buildrepo serves as the heart of Metro's advanced repository management features.

Initial Setup

To use buildrepo, you will first need to create a .buildbot configuration file. Here is the file I use on my AMD Jaguar build server:

/root/.buildbot (python source code)
builds = (
	"funtoo-current",
	"funtoo-current-hardened",
	"funtoo-stable",
)
 
arches = (
	"x86-64bit",
	"pure64"
)
 
subarches = (
	"amd64-jaguar",
	"amd64-jaguar-pure64",
)
 
def map_build(build, subarch, full, full_date):
	# arguments refer to last build...
	if full == True:
		buildtype =  ( "freshen", )
	else:
		buildtype =  ("full", )
	return buildtype

This file is actually a python source file that defines the tuples builds, arches and subarches. These variables tell buildrepo which builds, arches and subarches it should manage. A map_build() function is also defined which buildbot uses to determine what kind of build to perform. The arguments passed to the function are based on the last successful build. The function can read these arguments and return a string to define the type of the next build. In the above example, the map_build() function will cause the next build after a freshen build to be a full build, and the next build after a full build to be a freshen build, so that the build will alternate between full and freshen.

Automated Builds

Once the .buildbot file has been created, the buildrepo and buildbot.sh tools are ready to use. Here's how they work. These tools are designed to keep your repository (path/mirror in /root/.metro up-to-date by inspecting your repository and looking for stages that are out-of-date.

To list the next build that will be performed, do this -- this is from my ARM build server:

# ./buildrepo nextbuild
build=funtoo-current
arch_desc=arm-32bit
subarch=armv7a_hardfp
fulldate=2015-02-08
nextdate=2015-02-20
failcount=0
target=full
extras=''


If no output is displayed, then all your builds are up-to-date.

To actually run the next build, run buildbot.sh:

# ./buildbot.sh


If you're thinking that buildbot.sh would be a good candidate for a cron job, you've got the right idea!

List Builds

To get a quick look at our repository, let's run the buildrepo fails command:

# ./buildrepo fails
   0   2015-02-18 /home/mirror/funtoo/funtoo-current/x86-64bit/amd64-jaguar
   0   2015-02-18 /home/mirror/funtoo/funtoo-current/pure64/amd64-jaguar-pure64
   0   2015-02-18 /home/mirror/funtoo/funtoo-current-hardened/x86-64bit/amd64-jaguar
   0   2015-02-18 /home/mirror/funtoo/funtoo-current-hardened/pure64/amd64-jaguar-pure64
   0   2015-02-18 /home/mirror/funtoo/funtoo-stable/x86-64bit/amd64-jaguar
   0   2015-02-18 /home/mirror/funtoo/funtoo-stable/pure64/amd64-jaguar-pure64


On my AMD Jaguar build server, on Feb 20, 2015, this lists all the builds that buildrepo has been configured to manage. The first number on each line is a failcount, which is the number of consecutive times that the build has failed. A zero value indicates that everything's okay. The failcount is an important feature of the advanced repository management features. Here are a number of behaviors that are implemented based on failcount:

  • If buildbot.sh tries to build a stage and the build fails, the failcount is incremented.
  • If the build succeeds for a particular build, the failcount is reset to zero.
  • Builds with the lowest failcount are prioritized by Template:Buildrepo to build next, to steer towards builds that are more likely to complete successfully.
  • Once the failcount reaches 3 for a particular build, it is removed from the build rotation.

Resetting Failcount

If a build has issues, the failcount for a build will reach 3, at which point it will be pulled out of build rotation. To clear failcount, so that these builds are attempted again -- possibly fixed by new updates to the Portage tree -- use buildrepo zap:

# /root/metro/scripts/buildrepo zap
Removing /mnt/data/funtoo/funtoo-current/arm-32bit/armv7a_hardfp/.control/.failcount...
Removing /mnt/data/funtoo/funtoo-current/arm-32bit/armv6j_hardfp/.control/.failcount...
Removing /mnt/data/funtoo/funtoo-current/arm-32bit/armv5te/.control/.failcount...


Repository Maintenance

A couple of repository maintenance tools are provided:

  • buildrepo digestgen will generate hash files for the archives in your repository, and clean up stale hashes.
  • buildrepo index.xml will create an index.xml file at the root of your repository, listing all builds available.
  • buildrepo clean will output a shell script that will remove old stages. No more than the three most recent stage builds for each build/arch/subarch are kept.

Distributed Repositories

In many situation, you will have a number of build servers, and each will build a subset of your master repository, and then upload builds to the master repository. This is an area of Metro that is being actively developed. For now, automated upload functionality is not enabled, but is expected to be implemented in the relatively near future. However, it is possible to have your master repository differentiate between subarches that are built locally, and thus should be part of that system's buildbot build rotation, and those that are stored locally and built remotely. These builds should be cleaned when buildrepo clean is run, but should not enter the local build rotation. To set this up, modify /root/.buildbot and use the subarches and all_subarches variables:

/root/.metro - Excerpt of .metro config for master repository
# subarches we are building locally:

subarches = ( 
        "pentium4",
        "athlon-xp",
        "corei7",
        "corei7-pure64",
        "generic_32", 
        "i686", 
        "amd64-k8",
        "amd64-k8-pure64",
        "core2_64",
        "core2_64-pure64",
        "generic_64",
        "generic_64-pure64",
) 
  
# Things we need to clean, even if we may not be building:
  
all_subarches = subarches + (
        "atom_32",
        "atom_64",
        "atom_64-pure64",
        "amd64-k10",
        "amd64-k10-pure64",
        "amd64-bulldozer",
        "amd64-bulldozer-pure64",
        "amd64-steamroller",
        "amd64-steamroller-pure64",
        "amd64-piledriver",
        "amd64-piledriver-pure64",
        "amd64-jaguar",
        "amd64-jaguar-pure64",
        "intel64-haswell",
        "intel64-haswell-pure64",
        "intel64-ivybridge-pure64",
        "intel64-ivybridge",
        "armv7a_hardfp",
        "armv6j_hardfp",
        "armv5te"
)