[8bc3edae] | 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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[0dc5c2e1] | 7 | <!ENTITY lvm2-download-http "https://sourceware.org/ftp/lvm2/LVM2.&lvm2-version;.tgz">
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[e65320b] | 8 | <!ENTITY lvm2-download-ftp "ftp://sourceware.org/pub/lvm2/LVM2.&lvm2-version;.tgz">
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[a5bc3d2] | 9 | <!ENTITY lvm2-md5sum "5c06a01e1adacb96761188d6a8a17a2e">
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| 10 | <!ENTITY lvm2-size "2.4 MB">
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[d72d218] | 11 | <!ENTITY lvm2-buildsize "34 MB (add at least 594 MB for tests in the /tmp directory; additionally transient files can grow up to around 500 MB)">
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[23ed085] | 12 | <!-- My build size was 124 MB with tests, but I'll leave this here. -renodr -->
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| 13 | <!ENTITY lvm2-time "0.2 SBU (using parallelism=4; add 15 SBU for tests)">
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[8bc3edae] | 14 | ]>
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| 15 |
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[c627795] | 16 | <sect1 id="lvm2" xreflabel="LVM2-&lvm2-version;">
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[8bc3edae] | 17 | <?dbhtml filename="lvm2.html"?>
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| 18 |
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| 19 | <sect1info>
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| 20 | <othername>$LastChangedBy$</othername>
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| 21 | <date>$Date$</date>
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| 22 | </sect1info>
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| 23 |
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[c627795] | 24 | <title>LVM2-&lvm2-version;</title>
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[8bc3edae] | 25 |
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| 26 | <indexterm zone="lvm2">
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[c627795] | 27 | <primary sortas="a-LVM2">LVM2</primary>
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[8bc3edae] | 28 | </indexterm>
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| 29 |
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| 30 | <sect2 role="package">
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[c627795] | 31 | <title>Introduction to LVM2</title>
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[8bc3edae] | 32 |
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[c627795] | 33 | <para>
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[99fcc47] | 34 | The <application>LVM2</application> package is a set of tools that manage
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[c627795] | 35 | logical partitions. It allows spanning of file systems across multiple
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| 36 | physical disks and disk partitions and provides for dynamic growing or
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[99fcc47] | 37 | shrinking of logical partitions, mirroring and low storage footprint
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| 38 | snapshots.
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[c627795] | 39 | </para>
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[8bc3edae] | 40 |
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[48bcac9] | 41 | &lfs90_checked;
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[8bc3edae] | 42 |
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| 43 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 44 | <itemizedlist spacing="compact">
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[f60cf4a] | 45 | <listitem>
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[c627795] | 46 | <para>
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| 47 | Download (HTTP): <ulink url="&lvm2-download-http;"/>
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| 48 | </para>
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[f60cf4a] | 49 | </listitem>
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[8bc3edae] | 50 | <listitem>
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[c627795] | 51 | <para>
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| 52 | Download (FTP): <ulink url="&lvm2-download-ftp;"/>
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| 53 | </para>
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[8bc3edae] | 54 | </listitem>
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| 55 | <listitem>
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[c627795] | 56 | <para>
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| 57 | Download MD5 sum: &lvm2-md5sum;
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| 58 | </para>
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[8bc3edae] | 59 | </listitem>
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| 60 | <listitem>
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[c627795] | 61 | <para>
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| 62 | Download size: &lvm2-size;
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| 63 | </para>
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[8bc3edae] | 64 | </listitem>
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| 65 | <listitem>
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[c627795] | 66 | <para>
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| 67 | Estimated disk space required: &lvm2-buildsize;
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| 68 | </para>
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[8bc3edae] | 69 | </listitem>
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| 70 | <listitem>
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[c627795] | 71 | <para>
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| 72 | Estimated build time: &lvm2-time;
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| 73 | </para>
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[8bc3edae] | 74 | </listitem>
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| 75 | </itemizedlist>
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| 76 |
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[b5e8375] | 77 | <bridgehead renderas="sect3">LVM2 Dependencies</bridgehead>
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| 78 |
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[3964f59] | 79 | <bridgehead renderas="sect4">Required</bridgehead>
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| 80 | <para role="required">
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[8991a7cb] | 81 | <xref linkend='libaio'/>
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[3964f59] | 82 | </para>
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| 83 |
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[b5e8375] | 84 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 85 | <para role="optional">
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[99fcc47] | 86 | <xref linkend='mdadm'/>,
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| 87 | <xref linkend='reiserfs'/>,
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| 88 | <xref linkend='valgrind'/>,
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| 89 | <xref linkend='which'/>,
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| 90 | <xref linkend='xfsprogs'/> (all five may be used, but are not required,
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| 91 | for tests), and
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| 92 | <ulink url='https://github.com/jthornber/thin-provisioning-tools'>
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| 93 | thin-provisioning-tools</ulink>
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[b5e8375] | 94 | </para>
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| 95 |
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[8bc3edae] | 96 | <para condition="html" role="usernotes">User Notes:
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[c627795] | 97 | <ulink url="&blfs-wiki;/lvm2"/>
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| 98 | </para>
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[09765cf] | 99 |
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[8bc3edae] | 100 | </sect2>
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| 101 |
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[c627795] | 102 | <sect2 role="kernel" id="lvm2-kernel">
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[7e1df8f9] | 103 | <title>Kernel Configuration</title>
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| 104 |
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[c627795] | 105 | <para>
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[421128a1] | 106 | Enable the following options in the kernel configuration
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[c627795] | 107 | and recompile the kernel:
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| 108 | </para>
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[7e1df8f9] | 109 |
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[b5e8375] | 110 | <note><para>
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| 111 | There are several other Device Mapper options in the kernel beyond those
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| 112 | listed below. In order to get reasonable results if running the
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| 113 | regression tests, all must be enabled either internally or as a module.
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[302a619] | 114 | The tests will all time out if Magic SysRq key is not enabled.
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[b5e8375] | 115 | </para></note>
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| 116 |
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[7e1df8f9] | 117 | <screen><literal>Device Drivers --->
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[421128a1] | 118 | [*] Multiple devices driver support (RAID and LVM) ---> [CONFIG_MD]
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| 119 | <*/M> Device mapper support [CONFIG_BLK_DEV_DM]
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| 120 | <*/M/ > Crypt target support [CONFIG_DM_CRYPT]
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| 121 | <*/M/ > Snapshot target [CONFIG_DM_SNAPSHOT]
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[99fcc47] | 122 | <*/M/ > Thin provisioning target [CONFIG_DM_THIN_PROVISIONING]
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[302a619] | 123 | <*/M/ > Mirror target [CONFIG_DM_MIRROR]
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| 124 | Kernel hacking --->
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| 125 | [*] Magic SysRq key [CONFIG_MAGIC_SYSRQ]</literal></screen>
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[7e1df8f9] | 126 |
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| 127 | <indexterm zone="lvm2 lvm2-kernel">
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| 128 | <primary sortas="d-lvm2">lvm2</primary>
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| 129 | </indexterm>
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| 130 |
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| 131 | </sect2>
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| 132 |
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[8bc3edae] | 133 | <sect2 role="installation">
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[c627795] | 134 | <title>Installation of LVM2</title>
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[8bc3edae] | 135 |
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[c627795] | 136 | <para>
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| 137 | Install <application>LVM2</application> by running the following
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| 138 | commands:
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| 139 | </para>
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[8bc3edae] | 140 |
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[23ed085] | 141 | <screen><userinput>SAVEPATH=$PATH &&
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[41d504a] | 142 | PATH=$PATH:/sbin:/usr/sbin &&
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[e94d178] | 143 | ./configure --prefix=/usr \
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[4591404] | 144 | --exec-prefix= \
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| 145 | --enable-cmdlib \
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| 146 | --enable-pkgconfig \
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[46a9711b] | 147 | --enable-udev_sync &&
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[e94d178] | 148 | make &&
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| 149 | PATH=$SAVEPATH &&
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| 150 | unset SAVEPATH</userinput></screen>
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[8bc3edae] | 151 |
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[c627795] | 152 | <para>
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[99fcc47] | 153 | The tests use <application>udev</application> for logical volume
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[8991a7cb] | 154 | synchronization, so the LVM udev rules and some utilities need to
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[99fcc47] | 155 | be installed before running the tests. If you are installing
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| 156 | <application>LVM2</application> for the first time, and do not
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| 157 | want to install the full package before running the tests, the minimal
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| 158 | set of utilities can be installed by running the following instructions
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| 159 | as the <systemitem class="username">root</systemitem> user:
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| 160 | </para>
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| 161 |
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[06908bf6] | 162 | <screen role="root"
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| 163 | remap="test"><userinput>make -C tools install_tools_dynamic &&
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[99fcc47] | 164 | make -C udev install &&
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| 165 | make -C libdm install</userinput></screen>
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| 166 |
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| 167 | <para>
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[06908bf6] | 168 | To test the results, issue, as the
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| 169 | <systemitem class="username">root</systemitem> user:
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| 170 | </para>
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| 171 |
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| 172 | <screen role="root"
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| 173 | remap="test"><userinput>make check_local</userinput></screen>
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| 174 |
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| 175 | <para>
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| 176 | Other targets are available and can be listed with
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| 177 | <command>make -C test help</command>. The test timings are very dependent
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| 178 | on the speed of the disk(s), and on the number of enabled kernel options.
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[f9431b6] | 179 | </para>
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[20c731a] | 180 |
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[6c6f393] | 181 | <!-- Results for LVM2.2.02.176:
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| 182 | ### 292 tests: 177 passed, 46 skipped, 0 timed out, 60 warned, 9 failed
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[5d01724] | 183 |
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| 184 | Results for LVM2.2.03.01:
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| 185 | ### 302 tests: 182 passed, 43 skipped, 0 timed out, 62 warned, 15 failed
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[23ed085] | 186 |
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| 187 | Results for LVM2.2.03.05:
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| 188 | ### 326 tests: 255 passed, 58 skipped, 0 timed out, 2 warned, 11 failed
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[20c731a] | 189 | -->
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| 190 |
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[f9431b6] | 191 | <para>
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[af8a78d] | 192 | The tests do not implement the <quote>expected fail</quote> possibility,
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[e94d178] | 193 | and a small number of test failures is expected by upstream. More
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[f9431b6] | 194 | failures may happen because some kernel options are missing. For example,
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| 195 | the lack of the <emphasis>dm-delay</emphasis> device mapper target may
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[53375fc] | 196 | explain some failures. Some tests are flagged
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[e94d178] | 197 | <quote>warned</quote> if
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[f9431b6] | 198 | <ulink url='https://github.com/jthornber/thin-provisioning-tools'>
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| 199 | thin-provisioning-tools</ulink> are not installed. A workaround is to
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| 200 | add the following flags to <command>configure</command>:
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| 201 | </para>
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| 202 |
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| 203 | <screen role="nodump"><userinput> --with-thin-check= \
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| 204 | --with-thin-dump= \
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| 205 | --with-thin-repair= \
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| 206 | --with-thin-restore= \
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| 207 | --with-cache-check= \
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| 208 | --with-cache-dump= \
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| 209 | --with-cache-repair= \
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| 210 | --with-cache-restore= \</userinput></screen>
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| 211 |
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| 212 | <para>
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[0dc5c2e1] | 213 | Some tests may hang. They can be removed if necessary, for example:
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| 214 | <command>rm test/shell/lvconvert-raid-reshape.sh</command>. The tests
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| 215 | generate a lot of kernel messages, which may clutter your terminal. You
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| 216 | can disable them by issuing <command>dmesg -D</command> before running
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| 217 | the tests (do not forget to issue <command>dmesg -E</command> when tests
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| 218 | are done).
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[fbcb3846] | 219 |
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| 220 | <note><simpara>The checks create device nodes in the /tmp directory. The
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| 221 | tests will fail if /tmp is mounted with the nodev
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| 222 | option.</simpara></note>
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[c627795] | 223 | </para>
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[8bc3edae] | 224 |
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[c627795] | 225 | <para>
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| 226 | Now, as the <systemitem class="username">root</systemitem> user:
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| 227 | </para>
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[8bc3edae] | 228 |
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| 229 | <screen role="root"><userinput>make install</userinput></screen>
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| 230 |
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| 231 | </sect2>
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| 232 |
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| 233 | <sect2 role="commands">
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| 234 | <title>Command Explanations</title>
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| 235 |
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[e94d178] | 236 | <para>
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[41d504a] | 237 | <command>PATH=$PATH:/sbin:/usr/sbin</command>: The path
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[e94d178] | 238 | must contain <filename class="directory">/sbin</filename> and
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| 239 | <filename class='directory'>/usr/sbin</filename> for proper system tool
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[41d504a] | 240 | detection by the <command>configure</command> script. This instruction
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[41e2bf5] | 241 | ensures that PATH is properly set even if you build as an unprivileged user.
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[e94d178] | 242 | </para>
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| 243 |
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[c627795] | 244 | <para>
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[2800af7] | 245 | <parameter>--enable-cmdlib</parameter>: This switch enables
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[c627795] | 246 | building of the shared command library. It is required
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| 247 | when building the event daemon.
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| 248 | </para>
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| 249 |
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| 250 | <para>
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[2800af7] | 251 | <parameter>--enable-pkgconfig</parameter>: This switch enables
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[c627795] | 252 | installation of <command>pkg-config</command> support files.
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| 253 | </para>
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| 254 |
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| 255 | <para>
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[2800af7] | 256 | <parameter>--enable-udev_sync</parameter>: This switch enables
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[c627795] | 257 | synchronisation with <application>Udev</application> processing.
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| 258 | </para>
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| 259 |
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| 260 | <para>
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| 261 | <option>--enable-dmeventd</option>: This switch enables
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| 262 | building of the <application>Device Mapper</application>
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| 263 | event daemon.
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| 264 | </para>
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[8bc3edae] | 265 |
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| 266 | </sect2>
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| 267 |
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| 268 | <sect2 role="content">
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| 269 | <title>Contents</title>
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| 270 |
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| 271 | <segmentedlist>
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| 272 | <segtitle>Installed Programs</segtitle>
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| 273 | <segtitle>Installed Libraries</segtitle>
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[c3c56b2] | 274 | <segtitle>Installed Directories</segtitle>
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[8bc3edae] | 275 |
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| 276 | <seglistitem>
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[c627795] | 277 | <seg>
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[23ed085] | 278 | blkdeactivate, dmeventd (optional), dmsetup, fsadm, lvm, and lvmdump.
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| 279 | There are also numerous symbolic links to lvm that implement specific
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[09765cf] | 280 | functionalities
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[c627795] | 281 | </seg>
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| 282 | <seg>
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[23ed085] | 283 | libdevmapper.so and liblvm2cmd.so; optional:
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[a037dab] | 284 | libdevmapper-event.so, libdevmapper-event-lvm2.so,
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| 285 | libdevmapper-event-lvm2mirror.so, libdevmapper-event-lvm2snapshot.so,
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[80454f5] | 286 | libdevmapper-event-lvm2raid.so, and libdevmapper-event-lvm2thin.so
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[c627795] | 287 | </seg>
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[c3c56b2] | 288 | <seg>
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[a037dab] | 289 | /etc/lvm and
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| 290 | /lib/device-mapper (optional)
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[c3c56b2] | 291 | </seg>
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[8bc3edae] | 292 | </seglistitem>
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| 293 | </segmentedlist>
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| 294 |
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| 295 | <variablelist>
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| 296 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 297 | <?dbfo list-presentation="list"?>
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[61b95ac4] | 298 |
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| 299 | <?dbhtml list-presentation="table"?>
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[8bc3edae] | 300 |
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[8ed30d52] | 301 | <varlistentry id="blkdeactivate">
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| 302 | <term><command>blkdeactivate</command></term>
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| 303 | <listitem>
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| 304 | <para>
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[8991a7cb] | 305 | is a utility to deactivate block devices.
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[8ed30d52] | 306 | </para>
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| 307 | <indexterm zone="lvm2 blkdeactivate">
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| 308 | <primary sortas="b-blkdeactivate">blkdeactivate</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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[a037dab] | 313 | <varlistentry id="dmeventd">
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| 314 | <term><command>dmeventd</command></term>
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| 315 | <listitem>
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| 316 | <para>
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| 317 | (optional) is the Device Mapper event daemon.
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| 318 | </para>
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| 319 | <indexterm zone="lvm2 dmeventd">
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| 320 | <primary sortas="b-dmeventd">dmeventd</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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[8bc3edae] | 325 | <varlistentry id="dmsetup">
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| 326 | <term><command>dmsetup</command></term>
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| 327 | <listitem>
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[c627795] | 328 | <para>
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| 329 | is a low level logical volume management tool.
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| 330 | </para>
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[8bc3edae] | 331 | <indexterm zone="lvm2 dmsetup">
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| 332 | <primary sortas="b-dmsetup">dmsetup</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="fsadm">
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| 338 | <term><command>fsadm</command></term>
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| 339 | <listitem>
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[c627795] | 340 | <para>
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[73fe507] | 341 | is a utility used to resize or check filesystem on a device.
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[c627795] | 342 | </para>
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[8bc3edae] | 343 | <indexterm zone="lvm2 fsadm">
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| 344 | <primary sortas="b-fsadm">fsadm</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="lvm">
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| 350 | <term><command>lvm</command></term>
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| 351 | <listitem>
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[c627795] | 352 | <para>
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| 353 | provides the command-line tools for <application>LVM2</application>.
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| 354 | Commands are implemented via sympolic links to this program to
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| 355 | manage physical devices (pv*), volume groups (vg*) and logical
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| 356 | volumes (lv*).
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| 357 | </para>
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[8bc3edae] | 358 | <indexterm zone="lvm2 lvm">
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| 359 | <primary sortas="b-lvm">lvm</primary>
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| 360 | </indexterm>
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| 361 | </listitem>
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| 362 | </varlistentry>
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| 363 |
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[23ed085] | 364 | <!--
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[8bc3edae] | 365 | <varlistentry id="lvmconf">
|
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| 366 | <term><command>lvmconf</command></term>
|
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| 367 | <listitem>
|
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[c627795] | 368 | <para>
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[0d7900a] | 369 | is a script that modifies the locking configuration in
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[c627795] | 370 | the <application>LVM2</application> configuration file.
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| 371 | </para>
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[8bc3edae] | 372 | <indexterm zone="lvm2 lvmconf">
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| 373 | <primary sortas="b-lvmconf">lvmconf</primary>
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| 374 | </indexterm>
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| 375 | </listitem>
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| 376 | </varlistentry>
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[23ed085] | 377 | -->
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[8bc3edae] | 378 |
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| 379 | <varlistentry id="lvmdump">
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| 380 | <term><command>lvmdump</command></term>
|
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| 381 | <listitem>
|
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[c627795] | 382 | <para>
|
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| 383 | is a tool used to dump various information concerning
|
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| 384 | <application>LVM2</application>.
|
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| 385 | </para>
|
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[8bc3edae] | 386 | <indexterm zone="lvm2 lvmdump">
|
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| 387 | <primary sortas="b-lvmdump">lvmdump</primary>
|
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| 388 | </indexterm>
|
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| 389 | </listitem>
|
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| 390 | </varlistentry>
|
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| 391 |
|
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| 392 | <varlistentry id="vgimportclone">
|
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| 393 | <term><command>vgimportclone</command></term>
|
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| 394 | <listitem>
|
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[c627795] | 395 | <para>
|
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| 396 | is used to import a duplicated VG (e.g. hardware snapshot).
|
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| 397 | </para>
|
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[8bc3edae] | 398 | <indexterm zone="lvm2 vgimportclone">
|
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| 399 | <primary sortas="b-vgimportclone">vgimportclone</primary>
|
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| 400 | </indexterm>
|
---|
| 401 | </listitem>
|
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| 402 | </varlistentry>
|
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| 403 |
|
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| 404 | <varlistentry id="libdevmapper">
|
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| 405 | <term><filename class='libraryfile'>libdevmapper.so</filename></term>
|
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| 406 | <listitem>
|
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[c627795] | 407 | <para>
|
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| 408 | contains the <application>Device Mapper</application> API
|
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| 409 | functions.
|
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| 410 | </para>
|
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[8bc3edae] | 411 | <indexterm zone="lvm2 libdevmapper">
|
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| 412 | <primary sortas="c-libdevmapper">libdevmapper.so</primary>
|
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| 413 | </indexterm>
|
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| 414 | </listitem>
|
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| 415 | </varlistentry>
|
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| 416 |
|
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| 417 | </variablelist>
|
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| 418 |
|
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| 419 | </sect2>
|
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| 420 |
|
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| 421 | </sect1>
|
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