mirror of
https://github.com/Zeckmathederg/glfs.git
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271 lines
7.9 KiB
XML
271 lines
7.9 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY mdadm-download-http "&kernel-dl;/linux/utils/raid/mdadm/mdadm-&mdadm-version;.tar.xz">
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<!ENTITY mdadm-download-ftp " ">
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<!ENTITY mdadm-md5sum "a304eb0a978ca81045620d06547050a6">
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<!ENTITY mdadm-size "444 KB">
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<!ENTITY mdadm-buildsize "5.0 MB">
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<!ENTITY mdadm-time "0.1 SBU">
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<!-- <!ENTITY mdadm-time "0.1 SBU (tests take about an hour, only partially processor dependent)">-->
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]>
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<sect1 id="mdadm" xreflabel="mdadm-&mdadm-version;">
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<?dbhtml filename="mdadm.html"?>
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<title>mdadm-&mdadm-version;</title>
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<indexterm zone="mdadm">
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<primary sortas="a-mdadm">mdadm</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to mdadm</title>
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<para>
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The <application>mdadm</application> package contains administration
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tools for software RAID.
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</para>
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&lfs112_checked;
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<bridgehead renderas="sect3">Package Information</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>
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Download (HTTP): <ulink url="&mdadm-download-http;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download (FTP): <ulink url="&mdadm-download-ftp;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download MD5 sum: &mdadm-md5sum;
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</para>
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</listitem>
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<listitem>
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<para>
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Download size: &mdadm-size;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated disk space required: &mdadm-buildsize;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated build time: &mdadm-time;
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</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">mdadm Dependencies</bridgehead>
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<bridgehead renderas="sect4">Optional</bridgehead>
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<para role="optional">
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A <xref linkend="server-mail"/>
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</para>
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<!-- Contains -DSendmail=/usr/sbin/sendmail in the build procedure -->
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<para condition="html" role="usernotes">User Notes:
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<ulink url="&blfs-wiki;/mdadm"/></para>
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<caution>
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<para>
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Kernel versions in series 4.1 through 4.4.1 have a broken RAID
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implementation. Use a kernel with version at or above 4.4.2.
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</para>
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</caution>
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</sect2>
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<sect2 role="kernel" id='mdadm-kernel'>
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<title>Kernel Configuration</title>
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<para>
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Enable the following options in the kernel configuration
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and recompile the kernel, if necessary. Only the RAID types desired
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are required.
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</para>
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<screen><literal>Device Drivers --->
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[*] Multiple devices driver support (RAID and LVM) ---> [CONFIG_MD]
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<*> RAID support [CONFIG_BLK_DEV_MD]
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[*] Autodetect RAID arrays during kernel boot [CONFIG_MD_AUTODETECT]
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<*/M> Linear (append) mode [CONFIG_MD_LINEAR]
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<*/M> RAID-0 (striping) mode [CONFIG_MD_RAID0]
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<*/M> RAID-1 (mirroring) mode [CONFIG_MD_RAID1]
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<*/M> RAID-10 (mirrored striping) mode [CONFIG_MD_RAID10]
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<*/M> RAID-4/RAID-5/RAID-6 mode [CONFIG_MD_RAID456]</literal></screen>
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<indexterm zone="mdadm mdadm-kernel">
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<primary sortas="d-mdadm">mdadm</primary>
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</indexterm>
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</sect2>
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<sect2 role="installation">
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<title>Installation of mdadm</title>
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<!--
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<para>
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Fix a build error introduced by gcc-7.1:
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</para>
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<screen><userinput>sed 's@-Werror@@' -i Makefile</userinput></screen>
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-->
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<para>
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Build <application>mdadm</application> by running the following
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command:
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</para>
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<screen><userinput>make</userinput></screen>
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<para>
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This package does not come with a working test suite.
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</para>
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<!--
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The test suite errors out after about half the tests are run.
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Of those tests, about half fail.
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There are tests that indicate failure when the test is clearly wrong
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for the current code.
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I asked about it at linux-raid@vger.kernel.org, but did not get
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a responsive answer.
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- bdubbs 6 January 22
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<para>
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If you wish to run the tests, ensure that your kernel supports RAID
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and that a version of mdadm is not already running. As many as 9 out
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of 124 tests may fail.
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</para>
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<caution>
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<para>
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The tests edit values in /proc and run tests on software raid devices.
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They shouldn't be run on systems with active software RAID devices.
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</para>
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</caution>
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<para>
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Run the tests as the <systemitem class="username">root</systemitem> user:
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</para>
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<screen role="root"
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remap="test"><userinput>./test - -keep-going - -logdir=test-logs - -save-logs</userinput></screen>
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-->
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<para>
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Now, as the <systemitem class="username">root</systemitem> user:
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</para>
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<screen role="root"><userinput>make BINDIR=/usr/sbin install</userinput></screen>
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</sect2>
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<sect2 role="commands">
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<title>Command Explanations</title>
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<para>
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<command>make everything</command>: This optional target creates extra
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programs, particularly a statically-linked version of
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<command>mdadm</command>. <!-- and also versions of
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<command>mdassemble</command>. These all need to be manually installed.-->
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This needs to be manually installed.
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</para>
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<para>
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<parameter>--keep-going</parameter>: Run the tests to the end, even if one
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or more tests fail.
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</para>
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<para>
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<parameter>--logdir=test-logs</parameter>: Defines the directory
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where test logs are saved.
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</para>
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<para>
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<parameter>--save-logs</parameter>:
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Instructs the test suite to save the logs.
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</para>
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<para>
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<option>--tests=<replaceable><test1,test2,...></replaceable></option>:
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Optional comma separated list of tests to be executed
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(all tests, if this option is not passed).
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</para>
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</sect2>
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<sect2 role="content">
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<title>Contents</title>
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<segmentedlist>
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<segtitle>Installed Programs</segtitle>
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<segtitle>Installed Libraries</segtitle>
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<segtitle>Installed Directory</segtitle>
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<seglistitem>
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<seg>mdadm and mdmon <!--and optionally mdassemble--></seg>
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<seg>None</seg>
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<seg>None</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="mdadm-prog">
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<term><command>mdadm</command></term>
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<listitem>
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<para>
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manages MD devices aka Linux Software RAID
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</para>
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<indexterm zone="mdadm mdadm-prog">
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<primary sortas="b-mdadm-prog">mdadm</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="mdmon">
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<term><command>mdmon</command></term>
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<listitem>
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<para>
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monitors MD external metadata arrays
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</para>
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<indexterm zone="mdadm mdmon">
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<primary sortas="b-mdmon">mdmon</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<!-- Seems to be removed without a trace in 4.1
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<varlistentry id="mdassemble">
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<term><command>mdassemble</command></term>
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<listitem>
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<para>
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is a tiny program that can be used to assemble MD devices
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inside an initial ramdisk (initrd) or initramfs
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</para>
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<indexterm zone="mdadm mdassemble">
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<primary sortas="b-mdassemble">mdassemble</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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-->
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</variablelist>
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</sect2>
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</sect1>
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