One Hat Cyber Team
Your IP :
216.73.216.216
Server IP :
194.44.31.54
Server :
Linux zen.imath.kiev.ua 4.18.0-553.77.1.el8_10.x86_64 #1 SMP Fri Oct 3 14:30:23 UTC 2025 x86_64
Server Software :
Apache/2.4.37 (Rocky Linux) OpenSSL/1.1.1k
PHP Version :
5.6.40
Buat File
|
Buat Folder
Eksekusi
Dir :
~
/
usr
/
share
/
doc
/
qemu-kvm
/
system
/
View File Name :
managed-startup.html
<!DOCTYPE html> <!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> <!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Managed start up options — QEMU qemu-kvm-6.2.0-53.module+el8.10.0+2055+8eb7870b.4 documentation</title> <link rel="shortcut icon" href="../_static/qemu_32x32.png"/> <link rel="stylesheet" href="../_static/css/theme.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <link rel="index" title="Index" href="../genindex.html" /> <link rel="search" title="Search" href="../search.html" /> <link rel="next" title="Managing device boot order with bootindex properties" href="bootindex.html" /> <link rel="prev" title="GDB usage" href="gdb.html" /> <script src="../_static/js/modernizr.min.js"></script> </head> <body class="wy-body-for-nav"> <div class="wy-grid-for-nav"> <nav data-toggle="wy-nav-shift" class="wy-nav-side"> <div class="wy-side-scroll"> <div class="wy-side-nav-search"> <a href="../index.html" class="icon icon-home"> QEMU <img src="../_static/qemu_128x128.png" class="logo" alt="Logo"/> </a> <div class="version"> 6.2.0 </div> <div role="search"> <form id="rtd-search-form" class="wy-form" action="../search.html" method="get"> <input type="text" name="q" placeholder="Search docs" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> </div> <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation"> <p class="caption"><span class="caption-text">Contents:</span></p> <ul class="current"> <li class="toctree-l1"><a class="reference internal" href="../about/index.html">About QEMU</a></li> <li class="toctree-l1 current"><a class="reference internal" href="index.html">System Emulation</a><ul class="current"> <li class="toctree-l2"><a class="reference internal" href="quickstart.html">Quick Start</a></li> <li class="toctree-l2"><a class="reference internal" href="invocation.html">Invocation</a></li> <li class="toctree-l2"><a class="reference internal" href="device-emulation.html">Device Emulation</a></li> <li class="toctree-l2"><a class="reference internal" href="keys.html">Keys in the graphical frontends</a></li> <li class="toctree-l2"><a class="reference internal" href="mux-chardev.html">Keys in the character backend multiplexer</a></li> <li class="toctree-l2"><a class="reference internal" href="monitor.html">QEMU Monitor</a></li> <li class="toctree-l2"><a class="reference internal" href="images.html">Disk Images</a></li> <li class="toctree-l2"><a class="reference internal" href="virtio-net-failover.html">QEMU virtio-net standby (net_failover)</a></li> <li class="toctree-l2"><a class="reference internal" href="linuxboot.html">Direct Linux Boot</a></li> <li class="toctree-l2"><a class="reference internal" href="generic-loader.html">Generic Loader</a></li> <li class="toctree-l2"><a class="reference internal" href="guest-loader.html">Guest Loader</a></li> <li class="toctree-l2"><a class="reference internal" href="barrier.html">QEMU Barrier Client</a></li> <li class="toctree-l2"><a class="reference internal" href="vnc-security.html">VNC security</a></li> <li class="toctree-l2"><a class="reference internal" href="tls.html">TLS setup for network services</a></li> <li class="toctree-l2"><a class="reference internal" href="secrets.html">Providing secret data to QEMU</a></li> <li class="toctree-l2"><a class="reference internal" href="authz.html">Client authorization</a></li> <li class="toctree-l2"><a class="reference internal" href="gdb.html">GDB usage</a></li> <li class="toctree-l2 current"><a class="current reference internal" href="#">Managed start up options</a></li> <li class="toctree-l2"><a class="reference internal" href="bootindex.html">Managing device boot order with bootindex properties</a></li> <li class="toctree-l2"><a class="reference internal" href="cpu-hotplug.html">Virtual CPU hotplug</a></li> <li class="toctree-l2"><a class="reference internal" href="pr-manager.html">Persistent reservation managers</a></li> <li class="toctree-l2"><a class="reference internal" href="targets.html">QEMU System Emulator Targets</a></li> <li class="toctree-l2"><a class="reference internal" href="security.html">Security</a></li> <li class="toctree-l2"><a class="reference internal" href="multi-process.html">Multi-process QEMU</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="../user/index.html">User Mode Emulation</a></li> <li class="toctree-l1"><a class="reference internal" href="../tools/index.html">Tools</a></li> <li class="toctree-l1"><a class="reference internal" href="../interop/index.html">System Emulation Management and Interoperability</a></li> <li class="toctree-l1"><a class="reference internal" href="../specs/index.html">System Emulation Guest Hardware Specifications</a></li> <li class="toctree-l1"><a class="reference internal" href="../devel/index.html">Developer Information</a></li> </ul> </div> </div> </nav> <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> <nav class="wy-nav-top" aria-label="top navigation"> <i data-toggle="wy-nav-top" class="fa fa-bars"></i> <a href="../index.html">QEMU</a> </nav> <div class="wy-nav-content"> <div class="rst-content"> <div role="navigation" aria-label="breadcrumbs navigation"> <ul class="wy-breadcrumbs"> <li><a href="../index.html">Docs</a> »</li> <li><a href="index.html">System Emulation</a> »</li> <li>Managed start up options</li> <li class="wy-breadcrumbs-aside"> <a href="https://gitlab.com/qemu-project/qemu/blob/master/docs/system/managed-startup.rst" class="fa fa-gitlab"> Edit on GitLab</a> </li> </ul> <hr/> </div> <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> <div itemprop="articleBody"> <div class="section" id="managed-start-up-options"> <h1>Managed start up options<a class="headerlink" href="#managed-start-up-options" title="Permalink to this headline">¶</a></h1> <p>In system mode emulation, it’s possible to create a VM in a paused state using the <code class="docutils literal notranslate"><span class="pre">-S</span></code> command line option. In this state the machine is completely initialized according to command line options and ready to execute VM code but VCPU threads are not executing any code. The VM state in this paused state depends on the way QEMU was started. It could be in:</p> <ul class="simple"> <li>initial state (after reset/power on state)</li> <li>with direct kernel loading, the initial state could be amended to execute code loaded by QEMU in the VM’s RAM and with incoming migration</li> <li>with incoming migration, initial state will be amended with the migrated machine state after migration completes</li> </ul> <p>This paused state is typically used by users to query machine state and/or additionally configure the machine (by hotplugging devices) in runtime before allowing VM code to run.</p> <p>However, at the <code class="docutils literal notranslate"><span class="pre">-S</span></code> pause point, it’s impossible to configure options that affect initial VM creation (like: <code class="docutils literal notranslate"><span class="pre">-smp</span></code>/<code class="docutils literal notranslate"><span class="pre">-m</span></code>/<code class="docutils literal notranslate"><span class="pre">-numa</span></code> …) or cold plug devices. The experimental <code class="docutils literal notranslate"><span class="pre">--preconfig</span></code> command line option allows pausing QEMU before the initial VM creation, in a “preconfig” state, where additional queries and configuration can be performed via QMP before moving on to the resulting configuration startup. In the preconfig state, QEMU only allows a limited set of commands over the QMP monitor, where the commands do not depend on an initialized machine, including but not limited to:</p> <ul class="simple"> <li><code class="docutils literal notranslate"><span class="pre">qmp_capabilities</span></code></li> <li><code class="docutils literal notranslate"><span class="pre">query-qmp-schema</span></code></li> <li><code class="docutils literal notranslate"><span class="pre">query-commands</span></code></li> <li><code class="docutils literal notranslate"><span class="pre">query-status</span></code></li> <li><code class="docutils literal notranslate"><span class="pre">x-exit-preconfig</span></code></li> </ul> </div> </div> </div> <footer> <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> <a href="bootindex.html" class="btn btn-neutral float-right" title="Managing device boot order with bootindex properties" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a> <a href="gdb.html" class="btn btn-neutral" title="GDB usage" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a> </div> <hr/> <div role="contentinfo"> <p> © Copyright 2021, The QEMU Project Developers. </p> </div> Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/rtfd/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. <!-- Empty para to force a blank line after "Built with Sphinx ..." --> <p></p> <p>This documentation is for QEMU version 6.2.0.</p> <p><a href="../about/license.html">QEMU and this manual are released under the GNU General Public License, version 2.</a></p> </footer> </div> </div> </section> </div> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT:'../', VERSION:'qemu-kvm-6.2.0-53.module+el8.10.0+2055+8eb7870b.4', LANGUAGE:'None', COLLAPSE_INDEX:false, FILE_SUFFIX:'.html', HAS_SOURCE: false, SOURCELINK_SUFFIX: '.txt' }; </script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <script type="text/javascript" src="../_static/js/theme.js"></script> <script type="text/javascript"> jQuery(function () { SphinxRtdTheme.Navigation.enable(true); }); </script> </body> </html>