| 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 "830e173b9fcef4135b0e5a2e0399344e">
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| 10 | <!ENTITY btrfs-progs-size "1.9 MB">
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| 11 | <!ENTITY btrfs-progs-buildsize "47 MB (add 71 MB for tests)">
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| 12 | <!ENTITY btrfs-progs-time "0.4 SBU (add 13 SBU for tests)">
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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 | <othername>$LastChangedBy$</othername>
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| 20 | <date>$Date$</date>
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| 21 | </sect1info>
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| 22 |
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| 23 | <title>btrfs-progs-&btrfs-progs-version;</title>
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| 24 |
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| 25 | <indexterm zone="btrfs-progs">
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| 26 | <primary sortas="a-btrfs-progs">btrfs-progs</primary>
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| 27 | </indexterm>
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| 28 |
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| 29 | <sect2 role="package">
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| 30 | <title>Introduction to btrfs-progs</title>
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| 31 |
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| 32 | <para>The <application>btrfs-progs</application> package contains administration
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| 33 | and debugging tools for the B-tree file system (btrfs).</para>
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| 34 |
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| 35 | &lfs82_checked;
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| 36 |
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| 37 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 38 | <itemizedlist spacing="compact">
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| 39 | <listitem>
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| 40 | <para>Download (HTTP): <ulink url="&btrfs-progs-download-http;"/></para>
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| 41 | </listitem>
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| 42 | <listitem>
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| 43 | <para>Download (FTP): <ulink url="&btrfs-progs-download-ftp;"/></para>
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| 44 | </listitem>
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| 45 | <listitem>
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| 46 | <para>Download MD5 sum: &btrfs-progs-md5sum;</para>
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| 47 | </listitem>
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| 48 | <listitem>
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| 49 | <para>Download size: &btrfs-progs-size;</para>
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| 50 | </listitem>
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| 51 | <listitem>
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| 52 | <para>Estimated disk space required: &btrfs-progs-buildsize;</para>
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| 53 | </listitem>
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| 54 | <listitem>
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| 55 | <para>Estimated build time: &btrfs-progs-time;</para>
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| 56 | </listitem>
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| 57 | </itemizedlist>
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| 58 |
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| 59 | <bridgehead renderas="sect3">Btrfs-progs Dependencies</bridgehead>
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| 60 |
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| 61 | <bridgehead renderas="sect4">Required</bridgehead>
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| 62 | <para role="required">
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| 63 | <xref linkend="lzo"/>
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| 64 | </para>
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| 65 |
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| 66 | <bridgehead renderas="sect4">Recommended</bridgehead>
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| 67 | <para role="recommended">
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| 68 | <xref linkend="asciidoc"/> and
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| 69 | <xref linkend="xmlto"/> (both required to generate man pages)
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| 70 | </para>
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| 71 |
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| 72 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 73 | <para role="optional">
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| 74 | <xref linkend="lvm2"/> (<command>dmsetup</command> is used in tests),
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| 75 | <xref linkend="reiserfs"/> (for tests), and
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| 76 | <ulink url='https://github.com/facebook/zstd/releases/'>zstd</ulink> (for tests)
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| 77 | </para>
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| 78 |
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| 79 | <para condition="html" role="usernotes">User Notes:
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| 80 | <ulink url="&blfs-wiki;/xfs"/></para>
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| 81 |
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| 82 | </sect2>
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| 83 |
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| 84 | <sect2 role="kernel" id="btrfs-progs-kernel">
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| 85 | <title>Kernel Configuration</title>
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| 86 |
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| 87 | <para>Enable the following option in the kernel configuration
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| 88 | and recompile the kernel:</para>
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| 89 |
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| 90 | <screen><literal>File systems --->
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| 91 | <*/M> Btrfs filesystem support [CONFIG_BTRFS_FS]</literal></screen>
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| 92 |
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| 93 | <note><para>CONFIG_BTRFS_FS_POSIX_ACL and
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| 94 | CONFIG_REISERFS_FS_XATTR are required for some tests.
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| 95 | Other Btrfs options in the kernel are optional.</para></note>
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| 96 |
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| 97 | <indexterm zone="btrfs-progs btrfs-progs-kernel">
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| 98 | <primary sortas="d-btrfs-progs">BTRFS Programs</primary>
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| 99 | </indexterm>
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| 100 |
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| 101 | </sect2>
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| 102 |
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| 103 | <sect2 role="installation">
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| 104 | <title>Installation of btrfs-progs</title>
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| 105 |
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| 106 | <para>Install <application>btrfs-progs</application> by running the following
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| 107 | commands:</para>
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| 108 |
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| 109 | <screen><userinput>sed -i '40,107 s/\.gz//g' Documentation/Makefile.in &&
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| 110 |
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| 111 | ./configure --prefix=/usr \
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| 112 | --bindir=/bin \
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| 113 | --libdir=/lib \
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| 114 | --disable-zstd &&
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| 115 | make</userinput></screen>
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| 116 |
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| 117 | <para>Before running tests, build a support program and
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| 118 | disable several that fail:</para>
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| 119 |
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| 120 | <screen><userinput>make fssum &&
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| 121 |
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| 122 | sed -i '/found/s/^/: #/' tests/convert-tests.sh &&
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| 123 |
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| 124 | mv tests/mkfs-tests/013-reserved-1M-for-single/test.sh{,.broken} &&
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| 125 | mv tests/convert-tests/010-reiserfs-basic/test.sh{,.broken} &&
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| 126 | mv tests/convert-tests/011-reiserfs-delete-all-rollback/test.sh{,.broken} &&
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| 127 | mv tests/misc-tests/025-zstd-compression/test.sh{,.broken} &&
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| 128 | mv tests/fuzz-tests/003-multi-check-unmounted/test.sh{,.broken} &&
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| 129 | mv tests/fuzz-tests/009-simple-zero-log/test.sh{,.broken}</userinput></screen>
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| 130 |
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| 131 | <para>To test the results, issue (as the <systemitem
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| 132 | class="username">root</systemitem> user): </para>
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| 133 |
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| 134 | <screen><userinput>pushd tests
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| 135 | ./fsck-tests.sh
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| 136 | ./mkfs-tests.sh
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| 137 | ./cli-tests.sh
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| 138 | ./convert-tests.sh
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| 139 | ./misc-tests.sh
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| 140 | ./fuzz-tests.sh
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| 141 | popd</userinput></screen>
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| 142 |
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| 143 | <para>Install the package as the <systemitem
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| 144 | class="username">root</systemitem> user:</para>
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| 145 |
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| 146 | <screen role="root"><userinput>make install &&
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| 147 |
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| 148 | ln -sfv ../../lib/$(readlink /lib/libbtrfs.so) /usr/lib/libbtrfs.so &&
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| 149 | ln -sfv ../../lib/$(readlink /lib/libbtrfsutil.so) /usr/lib/libbtrfsutil.so &&
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| 150 | rm -fv /lib/libbtrfs.{a,so} /lib/libbtrfsutil.{a,so} &&
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| 151 | mv -v /bin/{mkfs,fsck}.btrfs /sbin</userinput></screen>
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| 152 |
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| 153 | </sect2>
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| 154 |
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| 155 | <sect2 role="commands">
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| 156 | <title>Command Explanations</title>
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| 157 |
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| 158 | <para><command>sed ... Documentation/Makefile.in</command>: Disables
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| 159 | compressing man pages to be consistent with the rest of BLFS.</para>
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| 160 |
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| 161 | <para><option>--disable-documentation</option>: This option
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| 162 | is needed if the recommended dependencies are not installed.</para>
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| 163 |
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| 164 | <para><command>mv tests/{cli,convert,misc,fuzz}-tests/ ...</command>: Disables
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| 165 | tests that fail and prevent tests from completing.</para>
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| 166 |
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| 167 | <para><command>ln -s ... /usr/lib/libbtrfs.so</command>: Creates a
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| 168 | symbolic link in the directory where it is expected.</para>
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| 169 |
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| 170 | <para><command>rm /lib/libbtrfs.{a,so}</command>: Removes unneeded
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| 171 | library entries.</para>
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| 172 |
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| 173 | </sect2>
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| 174 |
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| 175 | <sect2 role="content">
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| 176 | <title>Contents</title>
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| 177 |
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| 178 | <segmentedlist>
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| 179 | <segtitle>Installed Programs</segtitle>
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| 180 | <segtitle>Installed Libraries</segtitle>
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| 181 | <segtitle>Installed Directories</segtitle>
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| 182 |
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| 183 | <seglistitem>
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| 184 | <seg>
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| 185 | btrfs,
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| 186 | btrfs-convert,
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| 187 | btrfs-debug-tree,
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| 188 | btrfs-find-root,
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| 189 | btrfs-image,
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| 190 | btrfs-map-logical,
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| 191 | btrfs-select-super,
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| 192 | btrfs-zero-log,
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| 193 | btrfsck (link to btrfs),
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| 194 | btrfstune,
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| 195 | fsck.btrfs, and
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| 196 | mkfs.btrfs
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| 197 | </seg>
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| 198 |
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| 199 | <seg>libbtrfs.so</seg>
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| 200 |
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| 201 | <seg>/usr/include/btrfs</seg>
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| 202 | </seglistitem>
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| 203 | </segmentedlist>
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| 204 |
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| 205 | <variablelist>
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| 206 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 207 | <?dbfo list-presentation="list"?>
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| 208 | <?dbhtml list-presentation="table"?>
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| 209 |
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| 210 | <varlistentry id="btrfs-prog">
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| 211 | <term><command>btrfs</command></term>
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| 212 | <listitem>
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| 213 | <para>
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| 214 | is the main interface into btrfs filesystem operations.
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| 215 | </para>
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| 216 | <indexterm zone="btrfs-progs btrfs-prog">
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| 217 | <primary sortas="b-btrfs">btrfs</primary>
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| 218 | </indexterm>
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| 219 | </listitem>
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| 220 | </varlistentry>
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| 221 |
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| 222 | <varlistentry id="btrfs-convert">
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| 223 | <term><command>btrfs-convert</command></term>
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| 224 | <listitem>
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| 225 | <para>
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| 226 | converts from ext2/3/4 filesystem to btrfs.
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| 227 | </para>
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| 228 | <indexterm zone="btrfs-progs btrfs-convert">
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| 229 | <primary sortas="b-btrfs-convert">btrfs-convert</primary>
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| 230 | </indexterm>
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| 231 | </listitem>
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| 232 | </varlistentry>
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| 233 |
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| 234 | <varlistentry id="btrfs-debug-tree">
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| 235 | <term><command>btrfs-debug-tree</command></term>
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| 236 | <listitem>
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| 237 | <para>
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| 238 | queries various internal information.
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| 239 | </para>
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| 240 | <indexterm zone="btrfs-progs btrfs-debug-tree">
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| 241 | <primary sortas="b-btrfs-debug-tree">btrfs-debug-tree</primary>
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| 242 | </indexterm>
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| 243 | </listitem>
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| 244 | </varlistentry>
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| 245 |
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| 246 | <varlistentry id="btrfs-find-root">
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| 247 | <term><command>btrfs-find-root</command></term>
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| 248 | <listitem>
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| 249 | <para>
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| 250 | is a filter to find btrfs root.
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| 251 | </para>
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| 252 | <indexterm zone="btrfs-progs btrfs-find-root">
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| 253 | <primary sortas="b-btrfs-find-root">btrfs-find-root</primary>
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| 254 | </indexterm>
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| 255 | </listitem>
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| 256 | </varlistentry>
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| 257 |
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| 258 | <varlistentry id="btrfs-map-logical">
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| 259 | <term><command>btrfs-map-logical</command></term>
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| 260 | <listitem>
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| 261 | <para>
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| 262 | maps btrfs logical extent to physical extent.
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| 263 | </para>
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| 264 | <indexterm zone="btrfs-progs btrfs-map-logical">
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| 265 | <primary sortas="b-btrfs-map-logical">btrfs-map-logical</primary>
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| 266 | </indexterm>
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| 267 | </listitem>
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| 268 | </varlistentry>
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| 269 |
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| 270 | <varlistentry id="btrfs-select-super">
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| 271 | <term><command>btrfs-select-super</command></term>
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| 272 | <listitem>
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| 273 | <para>
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| 274 | overwrites primary superblock with a backup copy.
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| 275 | </para>
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| 276 | <indexterm zone="btrfs-progs btrfs-select-super">
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| 277 | <primary sortas="b-btrfs-select-super">btrfs-select-super</primary>
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| 278 | </indexterm>
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| 279 | </listitem>
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| 280 | </varlistentry>
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| 281 |
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| 282 | <varlistentry id="btrfs-zero-log">
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| 283 | <term><command>btrfs-zero-log</command></term>
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| 284 | <listitem>
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| 285 | <para>
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| 286 | recovers a damaged btrfs filesystem.
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| 287 | </para>
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| 288 | <indexterm zone="btrfs-progs btrfs-zero-log">
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| 289 | <primary sortas="b-btrfs-zero-log">btrfs-zero-log</primary>
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| 290 | </indexterm>
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| 291 | </listitem>
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| 292 | </varlistentry>
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| 293 |
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| 294 | <varlistentry id="btrfstune">
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| 295 | <term><command>btrfstune</command></term>
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| 296 | <listitem>
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| 297 | <para>
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| 298 | tunes various filesystem parameters.
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| 299 | </para>
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| 300 | <indexterm zone="btrfs-progs btrfstune">
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| 301 | <primary sortas="b-btrfstune">btrfstune</primary>
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| 302 | </indexterm>
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| 303 | </listitem>
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| 304 | </varlistentry>
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| 305 |
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| 306 | <varlistentry id="fsck.btrfs">
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| 307 | <term><command>fsck.btrfs</command></term>
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| 308 | <listitem>
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| 309 | <para>
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| 310 | does nothing, but is present for consistency with fstab.
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| 311 | </para>
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| 312 | <indexterm zone="btrfs-progs fsck.btrfs">
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| 313 | <primary sortas="b-fsck.btrfs">fsck.btrfs</primary>
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| 314 | </indexterm>
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| 315 | </listitem>
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| 316 | </varlistentry>
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| 317 |
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| 318 | <varlistentry id="mkfs.btrfs">
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| 319 | <term><command>mkfs.btrfs</command></term>
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| 320 | <listitem>
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| 321 | <para>creates a btrfs file system.</para>
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| 322 | <indexterm zone="btrfs-progs mkfs.btrfs">
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| 323 | <primary sortas="b-mkfs.btrfs">mkfs.btrfs</primary>
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| 324 | </indexterm>
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| 325 | </listitem>
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| 326 | </varlistentry>
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| 327 |
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| 328 | </variablelist>
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| 329 |
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| 330 | </sect2>
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| 331 |
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| 332 | </sect1>
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