Red Hat Summit Red Hat SummitSupportConsoleDéveloppeursCommencer un essaiContact

Ce contenu n'est pas disponible dans la langue sélectionnée.

21.9. virt-inspector: Inspecting Guest Virtual Machines

This section provides information about inspecting guest virtual machines.

21.9.1. Introduction
Copier lien

virt-inspector is a tool for inspecting a disk image to find out what operating system it contains.

21.9.2. Installation
Copier lien

To install virt-inspector and the documentation, enter the following command: 
# yum install libguestfs-tools
Copy to Clipboard Toggle word wrap
The documentation, including example XML output and a Relax-NG schema for the output, will be installed in /usr/share/doc/libguestfs-devel-*/ where * is replaced by the version number of libguestfs.

21.9.3. Running virt-inspector
Copier lien

You can run virt-inspector against any disk image or libvirt guest virtual machine as shown in the following example: 
$ virt-inspector -a disk.img > report.xml
Copy to Clipboard Toggle word wrap
Or as shown here: 
$ virt-inspector -d GuestName > report.xml
Copy to Clipboard Toggle word wrap
The result will be an XML report (report.xml). The main components of the XML file are a top-level <operatingsytems> element containing usually a single <operatingsystem> element, similar to the following: 
 <operatingsystems>
   <operatingsystem>

     <!-- the type of operating system and Linux distribution -->
     <name>linux</name>
     <distro>rhel</distro>
     <!-- the name, version and architecture -->
     <product_name>Red Hat Enterprise Linux Server release 6.4 </product_name>
     <major_version>6</major_version>
     <minor_version>4</minor_version>
     <package_format>rpm</package_format>
     <package_management>yum</package_management>
     <root>/dev/VolGroup/lv_root</root> 
     <!-- how the filesystems would be mounted when live -->
     <mountpoints>
       <mountpoint dev="/dev/VolGroup/lv_root">/</mountpoint>
       <mountpoint dev="/dev/sda1">/boot</mountpoint>
       <mountpoint dev="/dev/VolGroup/lv_swap">swap</mountpoint>
     </mountpoints>

    < !-- filesystems-->
      <filesystem dev="/dev/VolGroup/lv_root">
        <label></label>
        <uuid>b24d9161-5613-4ab8-8649-f27a8a8068d3</uuid>
        <type>ext4</type>
        <content>linux-root</content>
        <spec>/dev/mapper/VolGroup-lv_root</spec>
      </filesystem>
      <filesystem dev="/dev/VolGroup/lv_swap">
        <type>swap</type>
        <spec>/dev/mapper/VolGroup-lv_swap</spec>
      </filesystem>
     <!-- packages installed -->
     <applications>
       <application>
         <name>firefox</name>
         <version>3.5.5</version>
         <release>1.fc12</release>
       </application>
     </applications>

   </operatingsystem>
 </operatingsystems>
Copy to Clipboard Toggle word wrap
Processing these reports is best done using W3C standard XPath queries. Red Hat Enterprise Linux 7 comes with the xpath command-line program, which can be used for simple instances. However, for long-term and advanced usage, you should consider using an XPath library along with your favorite programming language.
As an example, you can list out all file system devices using the following XPath query: 
$ virt-inspector GuestName | xpath //filesystem/@dev
 Found 3 nodes:
 -- NODE --
 dev="/dev/sda1"
 -- NODE --
 dev="/dev/vg_f12x64/lv_root"
 -- NODE --
 dev="/dev/vg_f12x64/lv_swap"
Copy to Clipboard Toggle word wrap
Or list the names of all applications installed by entering: 
$ virt-inspector GuestName | xpath //application/name
 [...long list...]
Copy to Clipboard Toggle word wrap
Retour au début
Red Hat logoGithubredditYoutubeTwitter

Apprendre

Essayez, achetez et vendez

Communautés

À propos de la documentation Red Hat

Nous aidons les utilisateurs de Red Hat à innover et à atteindre leurs objectifs grâce à nos produits et services avec un contenu auquel ils peuvent faire confiance. Découvrez nos récentes mises à jour.

Rendre l’open source plus inclusif

Red Hat s'engage à remplacer le langage problématique dans notre code, notre documentation et nos propriétés Web. Pour plus de détails, consultez le Blog Red Hat.

À propos de Red Hat

Nous proposons des solutions renforcées qui facilitent le travail des entreprises sur plusieurs plates-formes et environnements, du centre de données central à la périphérie du réseau.

Theme

© 2025 Red Hat