source: general/genlib/libblockdev.xml@ 9e0abc24

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!ENTITY libblockdev-download-http
    "https://github.com/storaged-project/libblockdev/releases/download/&libblockdev-version;-1/libblockdev-&libblockdev-version;.tar.gz">
  <!ENTITY libblockdev-download-ftp " ">
  <!ENTITY libblockdev-md5sum        "74eed189c000cb3b0194c73c425c418c">
  <!ENTITY libblockdev-size          "1.0 MB">
  <!ENTITY libblockdev-buildsize     "13 MB">
  <!ENTITY libblockdev-time          "0.1 SBU">
]>

<sect1 id="libblockdev" xreflabel="libblockdev-&libblockdev-version;">
  <?dbhtml filename="libblockdev.html"?>


  <title>libblockdev-&libblockdev-version;</title>

  <indexterm zone="libblockdev">
    <primary sortas="a-libblockdev">libblockdev</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to libblockdev</title>

    <para>
      libblockdev is a C library supporting GObject Introspection for
      manipulation of block devices. It has a plugin-based architecture where
      each technology (like LVM, Btrfs, MD RAID, Swap,...) is implemented in a
      separate plugin, possibly with multiple implementations (e.g. using LVM
      CLI or the new LVM DBus API).
    </para>

    &lfs120_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Download (HTTP): <ulink url="&libblockdev-download-http;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download (FTP): <ulink url="&libblockdev-download-ftp;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download MD5 sum: &libblockdev-md5sum;
        </para>
      </listitem>
      <listitem>
        <para>
          Download size: &libblockdev-size;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated disk space required: &libblockdev-buildsize;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated build time: &libblockdev-time;
        </para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">libblockdev Dependencies</bridgehead>

    <bridgehead renderas="sect4">Required</bridgehead>
    <para role="required">
      <xref linkend="glib2"/>
    </para>

    <bridgehead renderas="sect4">Recommended</bridgehead>
    <para role="recommended">
      <xref linkend="cryptsetup"/>,
      <xref linkend="gobject-introspection"/> (required for GNOME),
      <xref linkend="keyutils"/>,
      <xref linkend="libbytesize"/>,
      <xref linkend="libnvme"/>, and
      <xref linkend="lvm2"/>
    </para>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional">
      <xref linkend="btrfs-progs"/>,
      <xref linkend="gtk-doc"/>,
      <xref linkend="mdadm"/>,
      <xref linkend="parted"/>,
      <ulink url="https://github.com/felixonmars/volume_key">volume_key</ulink>,
<!--      <xref linkend="volume_key"/>,-->
<!--      <ulink url="https://people.redhat.com/~heinzm/sw/dmraid/">dmraid</ulink>, -->
<!--      <ulink url="https://bcachefs.org/">bcachefs</ulink>, -->
      <ulink url="https://github.com/pmem/ndctl">ndctl</ulink>, and
      <ulink url="https://github.com/Datera/targetcli">targetcli</ulink>
      (for tests)
    </para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of libblockdev</title>
<!--
    <para>
      Fix the usage of a glib function deprecated for security:
    </para>

<screen><userinput>sed 's/g_memdup/&amp;2/' -i             \
    src/lib/plugin_apis/vdo.{c,api} \
    src/plugins/vdo.c</userinput></screen>
-->
    <para>
      Install <application>libblockdev</application> by running
      the following commands:
    </para>

<screen><userinput>./configure --prefix=/usr      \
            --sysconfdir=/etc  \
            --with-python3     \
            --without-escrow   \
            --without-gtk-doc  \
            --without-lvm      \
            --without-lvm_dbus \
            --without-nvdimm   \
            --without-tools    &amp;&amp;
make</userinput></screen>

    <para>
      The test suite requires <application>targetcli</application>, which
      is not a part of BLFS.
    </para>

    <para>
      Now, as the <systemitem class="username">root</systemitem> user:
    </para>

<screen role="root"><userinput>make install</userinput></screen>

  </sect2>

  <sect2 role="commands">
    <title>Command Explanations</title>

    <para>
      <parameter>--without-escrow</parameter>: This switch allows building
      <application>libblockdev</application> without volume_key installed.  
    </para>

    <para>
      <parameter>--without-lvm</parameter>
      <parameter>--without-lvm_dbus</parameter>
      <parameter>--without-tools</parameter>: The combination of these
      switches allows
      building <application>libblockdev</application> without
      <xref linkend="parted"/> installed.  Remove it if you've installed
      <xref linkend="parted"/> and wish to build the
      <command>lvm-cache-stats</command> or <command>vfat-resize</command>
      utilities, or wish <application>libblockdev</application> to support
      logical volumes.
    </para>

    <para>
      <option>--without-btrfs --without-mdraid --without-tools</option>:
      The combination of these switches allows building
      <application>libblockdev</application> without
      <xref linkend="libbytesize"/> installed.  The
      <option>--without-mdraid</option> option will break
      <xref linkend="udisks2"/>, so don't use it unless you really know what
      you are doing.
    </para>

    <para>
      <option>--without-crypto</option>: This switch allows building
      <application>libblockdev</application> without
      <xref linkend="cryptsetup"/> or <xref linkend="keyutils"/> installed.
      This switch will break <xref linkend="udisks2"/>, so don't use it
      unless you really know what you are doing.
    </para>

    <para>
      <option>--without-dm --without-lvm --without-lvm_dbus
      --without-mpath</option>: The combination of these switches allows
      building <application>libblockdev</application> without
      <xref linkend="lvm2"/> installed.  The <option>--without-dm</option>
      and <option>--without-mpath</option> options are not in the instructions
      provided by the book because <xref linkend="lvm2"/> is required for
      <xref linkend="cryptsetup"/> and <xref linkend="cryptsetup"/> is a
      recommended dependency of <application>libblockdev</application> anyway.
    </para>

    <para>
      <option>--without-nvme</option>: This switch allows building
      <application>libblockdev</application> without
      <xref linkend="libnvme"/> installed.  This switch will break
      <xref linkend="udisks2"/>, so don't use it unless you really know what
      you are doing.
    </para>

  </sect2>

  <sect2 role="content">
    <title>Contents</title>

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Directories</segtitle>

      <seglistitem>
        <seg>
          lvm-cache-stats and vfat-resize (both optional)
        </seg>
        <seg>
          libbd_btrfs.so,
          libbd_crypto.so,
          libbd_dm.so,
          libbd_fs.so,
          libbd_loop.so,
          libbd_lvm.so (optional),
          libbd_lvm-dbus.so (optional),
          libbd_mdraid.so,
          libbd_mpath.so,
          libbd_nvme.so,
          libbd_part.so,
          libbd_swap.so,
          libbd_utils.so, and
          libblockdev.so
        </seg>
        <seg>
          /etc/libblockdev,
          /usr/include/blockdev, and
          /usr/share/gtk-doc/html/libblockdev (optional)
        </seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="lvm-cache-stats">
        <term><command>lvm-cache-stats</command></term>
        <listitem>
          <para>
            prints statistics on caches on LVM Logical Volumes
          </para>
          <indexterm zone="libblockdev lvm-cache-stats">
            <primary sortas="b-lvm-cache-stats">lvm-cache-stats</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="vfat-resize">
        <term><command>vfat-resize</command></term>
        <listitem>
          <para>
            resizes <systemitem class="filesystem">vfat</systemitem>
            file systems
          </para>
          <indexterm zone="libblockdev vfat-resize">
            <primary sortas="b-vfat-resize">vfat-resize</primary>
          </indexterm>
        </listitem>
      </varlistentry>
    </variablelist>

  </sect2>

</sect1>