Libguestfs - Feb 2020 - [help] failed to launch guestfs in different Openstack environment

Hello guys,

        This is Phoenix from Dell and we now have one strange issue related to
launch guestfs in Openstack environment.  In Openstack of our lab,  guestfs can
be launched successfully within one SLES12 instance.  While when our SLES12
instance is deployed in customer's Openstack,  we see guestfs cannot be
launched.  And also the error message is ambiguous :


[cid:e6918586-90ff-46c7-b0d3-97e48ac9a22a]

        Do you have any idea whether there is some settings in Openstack ( such
as KVM setting, libvirt setting ...)  will prevent guestfs from launching ?   Or
is there any method for us to retrieve further debugging information ?   We have
enable debug option in guestfish command : "guestfish -x -v --ro -a
./7f489bbb-a0c3-42bc-9f55-35db948d5575?"


       Thanks a lot !


Regards,

Phoenix

On Wed, Feb 12, 2020 at 10:29:57AM +0000, Phoenix.Y.Wang@dell.com
wrote:
> Hello guys,
> 
>         This is Phoenix from Dell and we now have one strange issue related
to launch guestfs in Openstack environment.  In Openstack of our lab,  guestfs
can be launched successfully within one SLES12 instance.  While when our SLES12
instance is deployed in customer's Openstack,  we see guestfs cannot be
launched.  And also the error message is ambiguous :
> 
> 
> [cid:e6918586-90ff-46c7-b0d3-97e48ac9a22a]
> 
>         Do you have any idea whether there is some settings in Openstack (
such as KVM setting, libvirt setting ...)  will prevent guestfs from launching ?
Or is there any method for us to retrieve further debugging information ?   We
have enable debug option in guestfish command : "guestfish -x -v --ro -a
./7f489bbb-a0c3-42bc-9f55-35db948d5575?"
What does libguestfs-test-tool say?

Rich.


-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
libguestfs lets you edit virtual machines.  Supports shell scripting,
bindings from many languages.  http://libguestfs.org

Oh I see an image was attached.  The error is:

  KVM: entry failed, hardware error 0x0

I've no idea what that means, but you can use TCG instead:

  http://libguestfs.org/guestfs.3.html#force_tcg

which will be slow but avoids using KVM.

But the general problem seems to be that KVM is broken on your
machine, which is going to cause you other problems eventually.
Libguestfs was just the first thing to tell you.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine.  Supports Linux and Windows.
http://people.redhat.com/~rjones/virt-df/