| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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| 7 | <!ENTITY btrfs-progs-download-http "&kernel-dl;/linux/kernel/people/kdave/btrfs-progs/btrfs-progs-v&btrfs-progs-version;.tar.xz">
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| 8 | <!ENTITY btrfs-progs-download-ftp " ">
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| 9 | <!ENTITY btrfs-progs-md5sum "7ad375cc49428fcd86623ac335c4ac7f">
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| 10 | <!ENTITY btrfs-progs-size "2.2 MB">
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| 11 | <!ENTITY btrfs-progs-buildsize "52 MB (add 8.2 GB for tests)">
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| 12 | <!ENTITY btrfs-progs-time "0.2 SBU (add 5.0 SBU for tests, but will be longer on slow disks)">
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| 13 | ]>
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| 14 |
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| 15 | <sect1 id="btrfs-progs" xreflabel="btrfs-progs-&btrfs-progs-version;">
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| 16 | <?dbhtml filename="btrfs-progs.html"?>
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| 17 |
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| 18 | <sect1info>
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| 19 | <date>$Date$</date>
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| 20 | </sect1info>
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| 21 |
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| 22 | <title>btrfs-progs-&btrfs-progs-version;</title>
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| 23 |
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| 24 | <indexterm zone="btrfs-progs">
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| 25 | <primary sortas="a-btrfs-progs">btrfs-progs</primary>
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| 26 | </indexterm>
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| 27 |
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| 28 | <sect2 role="package">
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| 29 | <title>Introduction to btrfs-progs</title>
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| 30 |
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| 31 | <para>
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| 32 | The <application>btrfs-progs</application> package contains
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| 33 | administration and debugging tools for the B-tree file system (btrfs).
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| 34 | </para>
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| 35 |
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| 36 | &lfs112_checked;
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| 37 |
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| 38 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 39 | <itemizedlist spacing="compact">
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| 40 | <listitem>
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| 41 | <para>
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| 42 | Download (HTTP): <ulink url="&btrfs-progs-download-http;"/>
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| 43 | </para>
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| 44 | </listitem>
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| 45 | <listitem>
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| 46 | <para>
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| 47 | Download (FTP): <ulink url="&btrfs-progs-download-ftp;"/>
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| 48 | </para>
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| 49 | </listitem>
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| 50 | <listitem>
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| 51 | <para>
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| 52 | Download MD5 sum: &btrfs-progs-md5sum;
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| 53 | </para>
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| 54 | </listitem>
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| 55 | <listitem>
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| 56 | <para>
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| 57 | Download size: &btrfs-progs-size;
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| 58 | </para>
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| 59 | </listitem>
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| 60 | <listitem>
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| 61 | <para>
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| 62 | Estimated disk space required: &btrfs-progs-buildsize;
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| 63 | </para>
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| 64 | </listitem>
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| 65 | <listitem>
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| 66 | <para>
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| 67 | Estimated build time: &btrfs-progs-time;
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| 68 | </para>
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| 69 | </listitem>
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| 70 | </itemizedlist>
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| 71 | <!--
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| 72 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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| 73 | <itemizedlist spacing="compact">
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| 74 | <listitem>
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| 75 | <para>
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| 76 | Required patch if building with linux kernel headers version
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| 77 | before 5.12:
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| 78 | <ulink url="&patch-root;/btrfs-progs-&btrfs-progs-version;-headers_fix-1.patch"/>
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| 79 | </para>
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| 80 | </listitem>
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| 81 | </itemizedlist>
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| 82 | -->
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| 83 | <bridgehead renderas="sect3">Btrfs-progs Dependencies</bridgehead>
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| 84 |
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| 85 | <bridgehead renderas="sect4">Required</bridgehead>
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| 86 | <para role="required">
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| 87 | <xref linkend="lzo"/>
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| 88 | </para>
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| 89 |
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| 90 | <bridgehead renderas="sect4">Recommended</bridgehead>
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| 91 | <para role="recommended">
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| 92 | <xref linkend="asciidoc"/> (or <xref role="nodep" linkend="asciidoctor"/>)
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| 93 | and <xref linkend="xmlto"/> (both required to generate man pages)
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| 94 | </para>
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| 95 |
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| 96 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 97 | <para role="optional">
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| 98 | <xref linkend="lvm2"/> (<command>dmsetup</command> is used in tests),
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| 99 | <xref linkend="reiserfs"/> (for tests), and
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| 100 | <ulink url="https://www.sphinx-doc.org/">Sphinx</ulink> (required to build documentation),
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| 101 |
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| 102 | </para>
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| 103 |
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| 104 | <para condition="html" role="usernotes">User Notes:
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| 105 | <ulink url="&blfs-wiki;/btrfs-progs"/></para>
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| 106 |
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| 107 | </sect2>
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| 108 |
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| 109 | <sect2 role="kernel" id="btrfs-progs-kernel">
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| 110 | <title>Kernel Configuration</title>
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| 111 |
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| 112 | <para>
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| 113 | Enable the following option in the kernel configuration
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| 114 | and recompile the kernel:
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| 115 | </para>
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| 116 |
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| 117 | <screen><literal>File systems --->
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| 118 | <*/M> Btrfs filesystem support [CONFIG_BTRFS_FS]</literal></screen>
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| 119 |
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| 120 | <para>
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| 121 | In addition to the above and to the options required for
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| 122 | <xref linkend="lvm2"/> and <xref linkend="reiserfs"/>, the following
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| 123 | options must be enabled for running tests:
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| 124 | </para>
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| 125 |
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| 126 | <screen><literal>File systems --->
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| 127 | [*] Btrfs POSIX Access Control Lists [CONFIG_BTRFS_FS_POSIX_ACL]
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| 128 | [*] ReiserFS extended attributes [CONFIG_REISERFS_FS_XATTR]
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| 129 | [*] ReiserFS POSIX Access Control Lists [CONFIG_REISERFS_FS_POSIX_ACL]</literal></screen>
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| 130 |
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| 131 | <indexterm zone="btrfs-progs btrfs-progs-kernel">
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| 132 | <primary sortas="d-btrfs-progs">BTRFS Programs</primary>
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| 133 | </indexterm>
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| 134 |
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| 135 | </sect2>
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| 136 |
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| 137 | <sect2 role="installation">
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| 138 | <title>Installation of btrfs-progs</title>
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| 139 | <!--
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| 140 | <para>
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| 141 | If your system has linux kernel headers with version before 5.12, apply
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| 142 | the following patch:
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| 143 | </para>
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| 144 |
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| 145 | <screen><userinput>patch -Np1 -i ../btrfs-progs-&btrfs-progs-version;-headers_fix-1.patch</userinput></screen>
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| 146 | -->
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| 147 | <para>
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| 148 | Install <application>btrfs-progs</application> by running the following
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| 149 | commands:
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| 150 | </para>
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| 151 |
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| 152 | <screen><userinput>./configure --prefix=/usr --disable-documentation &&
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| 153 | make</userinput></screen>
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| 154 |
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| 155 | <note>
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| 156 | <para>
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| 157 | Some tests require grep built with perl regular expressions. To
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| 158 | obtain this, rebuild grep with the LFS Chapter 8 instructions after
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| 159 | installing <xref linkend="pcre2"/>.
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| 160 | </para>
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| 161 | </note>
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| 162 | <!-- Keeping this for now, but it seems that calling "make test" is
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| 163 | simpler and does the same thing -->
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| 164 | <para>
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| 165 | Before running tests, build a support program:
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| 166 | </para>
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| 167 |
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| 168 | <screen remap="test"><userinput>make fssum</userinput></screen>
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| 169 |
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| 170 | <para>
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| 171 | To test the results, issue (as the <systemitem
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| 172 | class="username">root</systemitem> user):
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| 173 | </para>
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| 174 |
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| 175 | <screen role="root" remap="test"><userinput>pushd tests
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| 176 | ./fsck-tests.sh
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| 177 | ./mkfs-tests.sh
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| 178 | ./cli-tests.sh
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| 179 | ./convert-tests.sh
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| 180 | ./misc-tests.sh
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| 181 | ./fuzz-tests.sh
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| 182 | popd</userinput></screen>
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| 183 | <!--
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| 184 | <para>
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| 185 | The fuzz-tests are currently broken.
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| 186 | </para>
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| 187 | -->
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| 188 | <!-- Template for failed test removal:
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| 189 | <para>
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| 190 | To test the results, first disable one test that fails and prevents
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| 191 | the other ones to run:
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| 192 | </para>
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| 193 |
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| 194 | <screen remap="test"><userinput>mv tests/fsck-tests/012-leaf-corruption/test.sh{,.broken}</userinput></screen>
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| 195 | Substitute your test failure with the one above.
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| 196 | <para>
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| 197 | To test the results, run (as the
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| 198 | <systemitem class="username">root</systemitem> user):
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| 199 | </para>
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| 200 |
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| 201 | <screen role="root" remap="test"><userinput>make -j1 -k test</userinput></screen>
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| 202 | -->
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| 203 | <note>
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| 204 | <para>
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| 205 | If the above mentioned kernel options are not enabled, some tests
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| 206 | fail, and prevent all the remaining tests to run because the test
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| 207 | disk image is not cleanly unmounted.
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| 208 | </para>
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| 209 | </note>
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| 210 | <!--
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| 211 | <para>
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| 212 | Two tests fail for unknown reasons in the
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| 213 | <command>test-libbtrfsutil</command> section. Tests take a very long
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| 214 | time, and it may be interesting to run only part of them. Running tests
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| 215 | only in one directory can be done with
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| 216 | <command>make TEST=<DIR> test</command>.
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| 217 | </para>
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| 218 | -->
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| 219 | <para>
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| 220 | Install the package as the <systemitem
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| 221 | class="username">root</systemitem> user:
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| 222 | </para>
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| 223 |
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| 224 | <screen role="root"><userinput>make install</userinput></screen>
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| 225 |
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| 226 | </sect2>
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| 227 |
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| 228 | <sect2 role="commands">
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| 229 | <title>Command Explanations</title>
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| 230 |
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| 231 | <para>
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| 232 | <option>--disable-documentation</option>: This option
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| 233 | is needed if the recommended dependencies are not installed.
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| 234 | </para>
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| 235 | <!-- not anymore in the commands
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| 236 | <para>
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| 237 | <command>mv tests/{cli,convert,misc,fuzz}-tests/ ...</command>: Disables
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| 238 | tests that fail and prevent tests from completing.
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| 239 | </para>
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| 240 |
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| 241 | <para>
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| 242 | <command>ln -s ... /usr/lib/libbtrfs.so</command>: Creates a
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| 243 | symbolic link in the directory where it is expected.
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| 244 | </para>
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| 245 |
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| 246 | <para>
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| 247 | <command>rm /lib/libbtrfs.{a,so}</command>: Removes unneeded
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| 248 | library entries.
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| 249 | </para>
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| 250 | -->
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| 251 | </sect2>
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| 252 |
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| 253 | <sect2 role="content">
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| 254 | <title>Contents</title>
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| 255 |
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| 256 | <segmentedlist>
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| 257 | <segtitle>Installed Programs</segtitle>
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| 258 | <segtitle>Installed Libraries</segtitle>
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| 259 | <segtitle>Installed Directories</segtitle>
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| 260 |
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| 261 | <seglistitem>
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| 262 | <seg>
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| 263 | btrfs,
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| 264 | btrfs-convert,
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| 265 | btrfs-find-root,
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| 266 | btrfs-image,
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| 267 | btrfs-map-logical,
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| 268 | btrfs-select-super,
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| 269 | btrfsck (link to btrfs),
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| 270 | btrfstune,
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| 271 | fsck.btrfs, and
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| 272 | mkfs.btrfs
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| 273 | </seg>
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| 274 |
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| 275 | <seg>
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| 276 | libbtrfs.so and
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| 277 | libbtrfsutil.so
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| 278 | </seg>
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| 279 |
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| 280 | <seg>/usr/include/btrfs</seg>
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| 281 | </seglistitem>
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| 282 | </segmentedlist>
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| 283 |
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| 284 | <variablelist>
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| 285 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 286 | <?dbfo list-presentation="list"?>
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| 287 | <?dbhtml list-presentation="table"?>
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| 288 |
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| 289 | <varlistentry id="btrfs-prog">
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| 290 | <term><command>btrfs</command></term>
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| 291 | <listitem>
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| 292 | <para>
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| 293 | is the main interface into btrfs filesystem operations
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| 294 | </para>
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| 295 | <indexterm zone="btrfs-progs btrfs-prog">
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| 296 | <primary sortas="b-btrfs">btrfs</primary>
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| 297 | </indexterm>
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| 298 | </listitem>
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| 299 | </varlistentry>
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| 300 |
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| 301 | <varlistentry id="btrfs-convert">
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| 302 | <term><command>btrfs-convert</command></term>
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| 303 | <listitem>
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| 304 | <para>
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| 305 | converts from an ext2/3/4 or reiserfs filesystem to btrfs
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| 306 | </para>
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| 307 | <indexterm zone="btrfs-progs btrfs-convert">
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| 308 | <primary sortas="b-btrfs-convert">btrfs-convert</primary>
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| 309 | </indexterm>
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| 310 | </listitem>
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| 311 | </varlistentry>
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| 312 |
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| 313 | <varlistentry id="btrfs-find-root">
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| 314 | <term><command>btrfs-find-root</command></term>
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| 315 | <listitem>
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| 316 | <para>
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| 317 | is a filter to find btrfs root
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| 318 | </para>
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| 319 | <indexterm zone="btrfs-progs btrfs-find-root">
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| 320 | <primary sortas="b-btrfs-find-root">btrfs-find-root</primary>
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| 321 | </indexterm>
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| 322 | </listitem>
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| 323 | </varlistentry>
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| 324 |
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| 325 | <varlistentry id="btrfs-map-logical">
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| 326 | <term><command>btrfs-map-logical</command></term>
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| 327 | <listitem>
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| 328 | <para>
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| 329 | maps btrfs logical extent to physical extent
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| 330 | </para>
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| 331 | <indexterm zone="btrfs-progs btrfs-map-logical">
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| 332 | <primary sortas="b-btrfs-map-logical">btrfs-map-logical</primary>
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| 333 | </indexterm>
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| 334 | </listitem>
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| 335 | </varlistentry>
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| 336 |
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| 337 | <varlistentry id="btrfs-select-super">
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| 338 | <term><command>btrfs-select-super</command></term>
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| 339 | <listitem>
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| 340 | <para>
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| 341 | overwrites the primary superblock with a backup copy
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| 342 | </para>
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| 343 | <indexterm zone="btrfs-progs btrfs-select-super">
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| 344 | <primary sortas="b-btrfs-select-super">btrfs-select-super</primary>
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| 345 | </indexterm>
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| 346 | </listitem>
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| 347 | </varlistentry>
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| 348 |
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| 349 | <varlistentry id="btrfstune">
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| 350 | <term><command>btrfstune</command></term>
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| 351 | <listitem>
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| 352 | <para>
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| 353 | tunes various filesystem parameters
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| 354 | </para>
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| 355 | <indexterm zone="btrfs-progs btrfstune">
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| 356 | <primary sortas="b-btrfstune">btrfstune</primary>
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| 357 | </indexterm>
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| 358 | </listitem>
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| 359 | </varlistentry>
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| 360 |
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| 361 | <varlistentry id="fsck.btrfs">
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| 362 | <term><command>fsck.btrfs</command></term>
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| 363 | <listitem>
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| 364 | <para>
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| 365 | does nothing, but is present for consistency with fstab
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| 366 | </para>
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| 367 | <indexterm zone="btrfs-progs fsck.btrfs">
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| 368 | <primary sortas="b-fsck.btrfs">fsck.btrfs</primary>
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| 369 | </indexterm>
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| 370 | </listitem>
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| 371 | </varlistentry>
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| 372 |
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| 373 | <varlistentry id="mkfs.btrfs">
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| 374 | <term><command>mkfs.btrfs</command></term>
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| 375 | <listitem>
|
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| 376 | <para>
|
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| 377 | creates a btrfs file system
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| 378 | </para>
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| 379 | <indexterm zone="btrfs-progs mkfs.btrfs">
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| 380 | <primary sortas="b-mkfs.btrfs">mkfs.btrfs</primary>
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| 381 | </indexterm>
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| 382 | </listitem>
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| 383 | </varlistentry>
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| 384 |
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| 385 | </variablelist>
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| 386 |
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| 387 | </sect2>
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| 388 |
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| 389 | </sect1>
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