Test Day:2012-04-12 libguestfs

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(Created page with "[http://libguestfs.org/ libguestfs is a set to virt tools and a library for viewing, editing and inspecting virtual machines and disk images]. In Fedora 17, libg...")
 
(Basic checks)
 
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[http://libguestfs.org/ libguestfs is a set to virt tools and a library for viewing, editing and inspecting virtual machines and disk images].
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[http://libguestfs.org/ libguestfs is a set to virt tools and a library for viewing, editing and inspecting virtual machines and disk images].  Some of the tools include [http://libguestfs.org/guestfish.1.html guestfish], [http://libguestfs.org/virt-df.1.html virt-df], [http://libguestfs.org/virt-edit.1.html virt-edit], [http://libguestfs.org/virt-inspector.1.html virt-inspector], [http://libguestfs.org/virt-rescue.1.html virt-rescue], [http://libguestfs.org/virt-resize.1.html virt-resize], [http://libguestfs.org/virt-sparsify.1.html virt-sparsify], [http://libguestfs.org/virt-win-reg.1.html virt-win-reg].
  
 
In [[Releases/17|Fedora 17]], libguestfs 1.17.x will be available (upgraded from 1.10 in Fedora 15 and 1.16 in Fedora 16).
 
In [[Releases/17|Fedora 17]], libguestfs 1.17.x will be available (upgraded from 1.10 in Fedora 15 and 1.16 in Fedora 16).
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  $ time guestfish -a /dev/null run
 
  $ time guestfish -a /dev/null run
  
Run this a few times so the cache is "hot".  As a typical guide, you should see times like:
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<b>Run this a few times so the cache is "hot".</b>  Note that the first time you run it, it creates a cached appliance (in <code>/var/tmp/.guestfs-*</code>) so that is much slower.  As a typical guide, you should see times like:
  
* 3-6 seconds, on modern hardware with virtualization extensions
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* 3-6 seconds, on modern hardware with virtualization extensions and KVM enabled
*
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* 30-60 seconds, in a VM
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 +
If you get times wildly outside these ranges, let us know.  Unless you're using an AMD Geode, in which case sorry.
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== Tests ==
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There is a good set of tests upstream, and rather than just copying them here, follow the link:
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http://libguestfs.org/guestfs-testing.1.html
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== Bugs ==
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If you find bugs, please file them using this link:
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https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Virtualization+Tools
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== IRC and mailing list ==
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During the test day (2012-04-12) we will be on the #fedora-test-day IRC channel.  The rest of the time, find us on #libguestfs (on FreeNode).  There is also a [http://www.redhat.com/mailman/listinfo/libguestfs mailing list].

Latest revision as of 13:35, 3 April 2012

libguestfs is a set to virt tools and a library for viewing, editing and inspecting virtual machines and disk images. Some of the tools include guestfish, virt-df, virt-edit, virt-inspector, virt-rescue, virt-resize, virt-sparsify, virt-win-reg.

In Fedora 17, libguestfs 1.17.x will be available (upgraded from 1.10 in Fedora 15 and 1.16 in Fedora 16).

Contents

[edit] Requirements

You will need a Fedora 17 machine. Having at least one guest will be very helpful.

You can test libguestfs inside an F17 virtual machine, but it will run a lot slower. For best performance, run the tests in F17 running on baremetal with VT extensions.

[edit] Installing libguestfs and the virt tools

As root, do:

# yum install libguestfs-tools

If you want to write libguestfs scripts or programs, install one of the language bindings, eg:

# yum install libguestfs-devel \
      perl-Sys-Guestfs python-libguestfs \
      ruby-libguestfs ocaml-libguestfs-devel

[edit] Basic checks

Check it's working by running this command (you don't need to be root):

$ libguestfs-test-tool

This command will run some simple tests and eventually print out:

===== TEST FINISHED OK =====

If it doesn't print this out, or seems to fail for some other reason, please file a bug including the complete, unedited output.

Now check how fast the appliance gets created:

$ time guestfish -a /dev/null run

Run this a few times so the cache is "hot". Note that the first time you run it, it creates a cached appliance (in /var/tmp/.guestfs-*) so that is much slower. As a typical guide, you should see times like:

  • 3-6 seconds, on modern hardware with virtualization extensions and KVM enabled
  • 30-60 seconds, in a VM

If you get times wildly outside these ranges, let us know. Unless you're using an AMD Geode, in which case sorry.

[edit] Tests

There is a good set of tests upstream, and rather than just copying them here, follow the link: http://libguestfs.org/guestfs-testing.1.html

[edit] Bugs

If you find bugs, please file them using this link: https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Virtualization+Tools

[edit] IRC and mailing list

During the test day (2012-04-12) we will be on the #fedora-test-day IRC channel. The rest of the time, find us on #libguestfs (on FreeNode). There is also a mailing list.