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-<?xml version='1.0'?> <!--*-nxml-*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
- "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
-
-<refentry id="systemd-detect-virt"
- xmlns:xi="http://www.w3.org/2001/XInclude">
-
- <refentryinfo>
- <title>systemd-detect-virt</title>
- <productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Lennart</firstname>
- <surname>Poettering</surname>
- <email>lennart@poettering.net</email>
- </author>
- </authorgroup>
- </refentryinfo>
-
- <refmeta>
- <refentrytitle>systemd-detect-virt</refentrytitle>
- <manvolnum>1</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>systemd-detect-virt</refname>
- <refpurpose>Detect execution in a virtualized environment</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <cmdsynopsis>
- <command>systemd-detect-virt <arg choice="opt" rep="repeat">OPTIONS</arg></command>
- </cmdsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para><command>systemd-detect-virt</command> detects execution in
- a virtualized environment. It identifies the virtualization
- technology and can distinguish full VM virtualization from
- container virtualization. <filename>systemd-detect-virt</filename>
- exits with a return value of 0 (success) if a virtualization
- technology is detected, and non-zero (error) otherwise. By default
- any type of virtualization is detected, and the options
- <option>--container</option> and <option>--vm</option> can be used
- to limit what types of virtualization are detected.</para>
-
- <para>When executed without <option>--quiet</option> will print a
- short identifier for the detected virtualization technology. The
- following technologies are currently identified:</para>
-
- <table>
- <title>Known virtualization technologies (both
- VM, i.e. full hardware virtualization,
- and container, i.e. shared kernel virtualization)</title>
- <tgroup cols='3' align='left' colsep='1' rowsep='1'>
- <colspec colname="type" />
- <colspec colname="id" />
- <colspec colname="product" />
- <thead>
- <row>
- <entry>Type</entry>
- <entry>ID</entry>
- <entry>Product</entry>
- </row>
- </thead>
- <tbody>
- <row>
- <entry morerows="8">VM</entry>
- <entry><varname>qemu</varname></entry>
- <entry>QEMU software virtualization</entry>
- </row>
-
- <row>
- <entry><varname>kvm</varname></entry>
- <entry>Linux KVM kernel virtual machine</entry>
- </row>
-
- <row>
- <entry><varname>zvm</varname></entry>
- <entry>s390 z/VM</entry>
- </row>
-
- <row>
- <entry><varname>vmware</varname></entry>
- <entry>VMware Workstation or Server, and related products</entry>
- </row>
-
- <row>
- <entry><varname>microsoft</varname></entry>
- <entry>Hyper-V, also known as Viridian or Windows Server Virtualization</entry>
- </row>
-
- <row>
- <entry><varname>oracle</varname></entry>
- <entry>Oracle VM VirtualBox (historically marketed by innotek and Sun Microsystems)</entry>
- </row>
-
- <row>
- <entry><varname>xen</varname></entry>
- <entry>Xen hypervisor (only domU, not dom0)</entry>
- </row>
-
- <row>
- <entry><varname>bochs</varname></entry>
- <entry>Bochs Emulator</entry>
- </row>
-
- <row>
- <entry><varname>uml</varname></entry>
- <entry>User-mode Linux</entry>
- </row>
-
- <row>
- <entry morerows="5">container</entry>
- <entry><varname>openvz</varname></entry>
- <entry>OpenVZ/Virtuozzo</entry>
- </row>
-
- <row>
- <entry><varname>lxc</varname></entry>
- <entry>Linux container implementation by LXC</entry>
- </row>
-
- <row>
- <entry><varname>lxc-libvirt</varname></entry>
- <entry>Linux container implementation by libvirt</entry>
- </row>
-
- <row>
- <entry><varname>systemd-nspawn</varname></entry>
- <entry>systemd's minimal container implementation, see <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry></entry>
- </row>
-
- <row>
- <entry><varname>docker</varname></entry>
- <entry>Docker container manager</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <para>If multiple virtualization solutions are used, only the
- "innermost" is detected and identified. That means if both VM
- virtualization and container virtualization are used in
- conjunction, only the latter will be identified (unless
- <option>--vm</option> is passed).</para>
- </refsect1>
-
- <refsect1>
- <title>Options</title>
-
- <para>The following options are understood:</para>
-
- <variablelist>
- <varlistentry>
- <term><option>-c</option></term>
- <term><option>--container</option></term>
-
- <listitem><para>Only detects container virtualization (i.e.
- shared kernel virtualization).</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>-v</option></term>
- <term><option>--vm</option></term>
-
- <listitem><para>Only detects VM virtualization (i.e. full
- hardware virtualization).</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>-q</option></term>
- <term><option>--quiet</option></term>
-
- <listitem><para>Suppress output of the virtualization
- technology identifier.</para></listitem>
- </varlistentry>
-
- <xi:include href="standard-options.xml" xpointer="help" />
- <xi:include href="standard-options.xml" xpointer="version" />
- </variablelist>
-
- </refsect1>
-
- <refsect1>
- <title>Exit status</title>
-
- <para>If a virtualization technology is detected, 0 is returned, a
- non-zero code otherwise.</para>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
- <para>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry>
- </para>
- </refsect1>
-
-</refentry>