source: postlfs/filesystems/mdadm.xml@ 06908bf6

10.0 10.1 11.0 9.0 9.1 ken/refactor-virt lazarus qt5new trunk xry111/git-date xry111/git-date-for-trunk xry111/git-date-test
Last change on this file since 06908bf6 was 06908bf6, checked in by Pierre Labastie <pieere@…>, 2 years ago

Add remap="doc", remap="test", or just realign them

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@21946 af4574ff-66df-0310-9fd7-8a98e5e911e0

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File size: 6.9 KB
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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6
7 <!ENTITY mdadm-download-http "&kernel-dl;/linux/utils/raid/mdadm/mdadm-&mdadm-version;.tar.xz">
8 <!ENTITY mdadm-download-ftp " ">
9 <!ENTITY mdadm-md5sum "2cb4feffea9167ba71b5f346a0c0a40d">
10 <!ENTITY mdadm-size "424 KB">
11 <!ENTITY mdadm-buildsize "6.7 MB (10 MB with tests)">
12 <!ENTITY mdadm-time "less than 0.1 SBU (tests take about an hour, only partially processor dependent)">
13]>
14
15<sect1 id="mdadm" xreflabel="mdadm-&mdadm-version;">
16 <?dbhtml filename="mdadm.html"?>
17
18 <sect1info>
19 <othername>$LastChangedBy$</othername>
20 <date>$Date$</date>
21 </sect1info>
22
23 <title>mdadm-&mdadm-version;</title>
24
25 <indexterm zone="mdadm">
26 <primary sortas="a-mdadm">mdadm</primary>
27 </indexterm>
28
29 <sect2 role="package">
30 <title>Introduction to mdadm</title>
31
32 <para>The <application>mdadm</application> package contains administration
33 tools for software RAID.</para>
34
35 &lfs84_checked;
36
37 <bridgehead renderas="sect3">Package Information</bridgehead>
38 <itemizedlist spacing="compact">
39 <listitem>
40 <para>Download (HTTP): <ulink url="&mdadm-download-http;"/></para>
41 </listitem>
42 <listitem>
43 <para>Download (FTP): <ulink url="&mdadm-download-ftp;"/></para>
44 </listitem>
45 <listitem>
46 <para>Download MD5 sum: &mdadm-md5sum;</para>
47 </listitem>
48 <listitem>
49 <para>Download size: &mdadm-size;</para>
50 </listitem>
51 <listitem>
52 <para>Estimated disk space required: &mdadm-buildsize;</para>
53 </listitem>
54 <listitem>
55 <para>Estimated build time: &mdadm-time;</para>
56 </listitem>
57 </itemizedlist>
58
59 <para condition="html" role="usernotes">User Notes:
60 <ulink url="&blfs-wiki;/mdadm"/></para>
61 <caution>
62 <para>
63 Kernel versions in series 4.1 through 4.4.1 have a broken RAID
64 implementation. Use a kernel with version at or above 4.4.2.
65 </para>
66 </caution>
67
68 </sect2>
69
70 <sect2 role="kernel" id='mdadm-kernel'>
71 <title>Kernel Configuration</title>
72
73 <para>Enable the following options in the kernel configuration
74 and recompile the kernel, if necessary. Only the RAID types desired
75 are required.</para>
76
77<screen><literal>Device Drivers ---&gt;
78 [*] Multiple devices driver support (RAID and LVM) ---&gt; [CONFIG_MD]
79 &lt;*&gt; RAID support [CONFIG_BLK_DEV_MD]
80 [*] Autodetect RAID arrays during kernel boot [CONFIG_MD_AUTODETECT]
81 &lt;*/M&gt; Linear (append) mode [CONFIG_MD_LINEAR]
82 &lt;*/M&gt; RAID-0 (striping) mode [CONFIG_MD_RAID0]
83 &lt;*/M&gt; RAID-1 (mirroring) mode [CONFIG_MD_RAID1]
84 &lt;*/M&gt; RAID-10 (mirrored striping) mode [CONFIG_MD_RAID10]
85 &lt;*/M&gt; RAID-4/RAID-5/RAID-6 mode [CONFIG_MD_RAID456]</literal></screen>
86
87 <indexterm zone="mdadm mdadm-kernel">
88 <primary sortas="d-mdadm">mdadm</primary>
89 </indexterm>
90
91 </sect2>
92
93 <sect2 role="installation">
94 <title>Installation of mdadm</title>
95
96 <para>Fix a build error introduced by GCC-7.1:</para>
97
98<screen><userinput>sed 's@-Werror@@' -i Makefile</userinput></screen>
99
100 <para>Install <application>mdadm</application> by running the following
101 commands:</para>
102
103<screen><userinput>make</userinput></screen>
104
105 <para>If you wish to run the tests, ensure that your kernel supports
106 RAID and that a version of mdadm is not already running. As many as 9 out
107 of 124 tests may fail.</para>
108
109 <para>First fix the test script to avoid a bogus error message when
110 tests fail and build the supporting programs:</para>
111
112<screen remap="test"><userinput>sed -i 's# if.* == "1"#&amp; -a -e $targetdir/log#' test &amp;&amp;
113make test</userinput></screen>
114
115 <para>Run the tests as the <systemitem class="username">root</systemitem> user:</para>
116
117<screen role="root"
118 remap="test"><userinput>./test --keep-going --logdir=test-logs --save-logs</userinput></screen>
119
120 <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
121
122<screen role="root"><userinput>make install</userinput></screen>
123
124 </sect2>
125
126 <sect2 role="commands">
127 <title>Command Explanations</title>
128
129 <para>
130 <command>make everything</command>: This optional target creates extra
131 programs, particularly a statically-linked version of
132 <command>mdadm</command> and also versions of
133 <command>mdassemble</command>. These all need to be manually installed.
134 </para>
135
136 <para>
137 <parameter>--keep-going</parameter>: Run the tests to the end, even if one
138 or more tests fail.
139 </para>
140
141 <para>
142 <parameter>--logdir=test-logs</parameter>: Defines the directory
143 where test logs are saved.
144 </para>
145
146 <para>
147 <parameter>--save-logs</parameter>:
148 Instructs the test suite to save the logs.
149 </para>
150
151 <para>
152 <option>--tests=<replaceable>&lt;test1,test2,...&gt;</replaceable></option>:
153 Optional comma separated list of tests to be executed
154 (all tests, if this option is not passed).
155 </para>
156
157 </sect2>
158
159
160 <sect2 role="content">
161 <title>Contents</title>
162
163 <segmentedlist>
164 <segtitle>Installed Programs</segtitle>
165 <segtitle>Installed Libraries</segtitle>
166 <segtitle>Installed Directory</segtitle>
167
168 <seglistitem>
169 <seg>mdadm, mdmon and optionally mdassemble</seg>
170 <seg>None</seg>
171 <seg>None</seg>
172 </seglistitem>
173 </segmentedlist>
174
175 <variablelist>
176 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
177 <?dbfo list-presentation="list"?>
178 <?dbhtml list-presentation="table"?>
179
180 <varlistentry id="mdadm-prog">
181 <term><command>mdadm</command></term>
182 <listitem>
183 <para>manages MD devices aka Linux Software RAID.</para>
184 <indexterm zone="mdadm mdadm-prog">
185 <primary sortas="b-mdadm-prog">mdadm</primary>
186 </indexterm>
187 </listitem>
188 </varlistentry>
189
190 <varlistentry id="mdmon">
191 <term><command>mdmon</command></term>
192 <listitem>
193 <para>monitors MD external metadata arrays.</para>
194 <indexterm zone="mdadm mdmon">
195 <primary sortas="b-mdmon">mdmon</primary>
196 </indexterm>
197 </listitem>
198 </varlistentry>
199
200 <varlistentry id="mdassemble">
201 <term><command>mdassemble</command></term>
202 <listitem>
203 <para>is a tiny program that can be used to assemble MD devices
204 inside an initial ramdisk (initrd) or initramfs.</para>
205 <indexterm zone="mdadm mdassemble">
206 <primary sortas="b-mdassemble">mdassemble</primary>
207 </indexterm>
208 </listitem>
209 </varlistentry>
210
211 </variablelist>
212
213 </sect2>
214
215</sect1>
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