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81 lines
6.8 KiB
HTML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" /><link rel="stylesheet" type="text/css" href="libvirt.css" /><link rel="SHORTCUT ICON" href="/32favicon.png" /><title>FAQ</title></head><body><div id="container"><div id="intro"><div id="adjustments"></div><div id="pageHeader"></div><div id="content2"><h1 class="style1">FAQ</h1><p>Table of Contents:</p><ul><li><a href="FAQ.html#License">License(s)</a></li>
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<li><a href="FAQ.html#Installati">Installation</a></li>
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<li><a href="FAQ.html#Compilatio">Compilation</a></li>
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<li><a href="FAQ.html#Developer">Developer corner</a></li>
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</ul><h3><a name="License" id="License">License</a>(s)</h3><ol><li><em>Licensing Terms for libvirt</em>
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<p>libvirt is released under the <a href="http://www.opensource.org/licenses/lgpl-license.html">GNU Lesser
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General Public License</a>, see the file COPYING.LIB in the distribution
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for the precise wording. The only library that libvirt depends upon is
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the Xen store access library which is also licenced under the LGPL.</p>
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</li>
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<li><em>Can I embed libvirt in a proprietary application ?</em>
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<p>Yes. The LGPL allows you to embed libvirt into a proprietary
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application. It would be graceful to send-back bug fixes and improvements
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as patches for possible incorporation in the main development tree. It
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will decrease your maintainance costs anyway if you do so.</p>
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</li>
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</ol><h3><a name="Installati" id="Installati">Installation</a></h3><ol><li><em>Where can I get libvirt</em> ?
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<p>The original distribution comes from <a href="ftp://libvirt.org/libvirt/">ftp://libvirt.org/libvirt/</a>.</p>
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</li>
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<li><em>I can't install the libvirt/libvirt-devel RPM packages due to
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failed dependencies</em>
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<p>The most generic solution is to re-fetch the latest src.rpm , and
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rebuild it locally with</p>
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<p><code>rpm --rebuild libvirt-xxx.src.rpm</code>.</p>
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<p>If everything goes well it will generate two binary rpm packages (one
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providing the shared libs and virsh, and the other one, the -devel
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package, providing includes, static libraries and scripts needed to build
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applications with libvirt that you can install locally.</p>
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<p>One can also rebuild the RPMs from a tarball:</p>
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<p><code>rpmbuild -ta libdir-xxx.tar.gz</code></p>
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<p>Or from a configured tree with:</p>
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<p><code>make rpm</code></p>
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</li>
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<li><em>Failure to use the API for non-root users</em>
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<p>Large parts of the API may only be accessible with root priviledges,
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however the read only access to the xenstore data doesnot have to be
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forbidden to user, at least for monitoring purposes. If "virsh dominfo"
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fails to run as an user, change the mode of the xenstore read-only socket
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with:</p>
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<p><code>chmod 666 /var/run/xenstored/socket_ro</code></p>
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<p>and also make sure that the Xen Daemon is running correctly with local
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HTTP server enabled, this is defined in
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<code>/etc/xen/xend-config.sxp</code> which need the following line to be
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enabled:</p>
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<p><code>(xend-http-server yes)</code></p>
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<p>If needed restart the xend daemon after making the change with the
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following command run as root:</p>
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<p><code>service xend restart</code></p>
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</li>
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</ol><h3><a name="Compilatio" id="Compilatio">Compilation</a></h3><ol><li><em>What is the process to compile libvirt ?</em>
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<p>As most UNIX libraries libvirt follows the "standard":</p>
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<p><code>gunzip -c libvirt-xxx.tar.gz | tar xvf -</code></p>
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<p><code>cd libvirt-xxxx</code></p>
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<p><code>./configure --help</code></p>
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<p>to see the options, then the compilation/installation proper</p>
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<p><code>./configure [possible options]</code></p>
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<p><code>make</code></p>
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<p><code>make install</code></p>
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<p>At that point you may have to rerun ldconfig or a similar utility to
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update your list of installed shared libs.</p>
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</li>
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<li><em>What other libraries are needed to compile/install libvirt ?</em>
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<p>Libvirt requires libxenstore, which is usually provided by the xen
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packages as well as the public headers to compile against libxenstore.</p>
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</li>
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<li><em>I use the CVS version and there is no configure script</em>
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<p>The configure script (and other Makefiles) are generated. Use the
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autogen.sh script to regenerate the configure script and Makefiles,
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like:</p>
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<p><code>./autogen.sh --prefix=/usr --disable-shared</code></p>
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</li>
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</ol><h3><a name="Developer" id="Developer">Developer</a> corner</h3><ol><li><em>Troubles compiling or linking programs using libvirt</em>
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<p>To simplify the process of reusing the library, libvirt comes with
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pkgconfig support, which can be used directly from autoconf support or
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via the pkg-config command line tool, like:</p>
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<p><code>pkg-config libvirt --libs</code></p>
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</li>
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</ol></div></div><div class="linkList2"><div class="llinks2"><h3 class="links2"><span>main menu</span></h3><ul><li><a href="index.html">Home</a></li><li><a href="news.html">Releases</a></li><li><a href="intro.html">Introduction</a></li><li><a href="architecture.html">libvirt architecture</a></li><li><a href="downloads.html">Downloads</a></li><li><a href="format.html">XML Format</a></li><li><a href="python.html">Binding for Python</a></li><li><a href="errors.html">Handling of errors</a></li><li><a href="FAQ.html">FAQ</a></li><li><a href="bugs.html">Reporting bugs and getting help</a></li><li><a href="html/index.html">API Menu</a></li><li><a href="examples/index.html">C code examples</a></li><li><a href="ChangeLog.html">Recent Changes</a></li></ul></div><div class="llinks2"><h3 class="links2"><span>related links</span></h3><ul><li><a href="https://www.redhat.com/archives/libvir-list/">Mail archive</a></li><li><a href="https://bugzilla.redhat.com/bugzilla/buglist.cgi?product=Fedora+Core&component=libvirt&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_status=MODIFIED&short_desc_type=allwordssubstr&short_desc=&long_desc_type=allwordssubstr">Open bugs</a></li><li><a href="http://search.cpan.org/~danberr/Sys-Virt-0.1.0/">Perl bindings</a></li><li><a href="http://www.cl.cam.ac.uk/Research/SRG/netos/xen/index.html">Xen project</a></li><li><form action="search.php" enctype="application/x-www-form-urlencoded" method="get"><input name="query" type="text" size="12" value="Search..." /><input name="submit" type="submit" value="Go" /></form></li><li><a href="http://xmlsoft.org/"><img src="Libxml2-Logo-90x34.gif" alt="Made with Libxml2 Logo" /></a></li></ul><p class="credits">Graphics and design by <a href="mail:dfong@redhat.com">Diana Fong</a></p></div></div><div id="bottom"><p class="p1"></p></div></div></body></html>
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