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Re: [Qemu-discuss] Blue screen error on windows server 2008 and 2012

From: Dominique Ramaekers
Subject: Re: [Qemu-discuss] Blue screen error on windows server 2008 and 2012
Date: Mon, 10 Oct 2016 06:32:09 +0000

I have bad experiences with Windows and changing the CPU or disk configurations. Windows doesn’t seem to handle that well.


I now always use the redhad virtual cpu (<model fallback='allow'>cpu64-rhel6</model>). This way, I always can change the guest from host without de guest having to deal with (virtual)hardware changes.


For most of the appliances, the the rhel-cpu is sufficient.




Van: Qemu-discuss [mailto:qemu-discuss-bounces+address@hidden Namens John Y.
Verzonden: zondag 9 oktober 2016 3:21
Aan: address@hidden
Onderwerp: [Qemu-discuss] Blue screen error on windows server 2008 and 2012


I have two hosts.


Host A:  

Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz


10 cores and 2 thread per cpu.


Host B:

Intel(R) Xeon(R) CPU  L5520  @ 2.27GHz


4 cores and 2 thread per cpu.


In host B, I run a windows 2012 vm , double click a exe file inside vm and I got a blue screen error.




I use the same image to create a vm in host A, I can open the exe file inside vm and everything is ok.


I had try:

1. use "<cpu mode="host-model"/>" instead of "<cpu mode="host-passthrough"/> "

2. use qemu2.5 instead of /usr/libexec/qemu-kvm(1.5.3)


Any idea?


Host :

Linux hostA 4.2.0-1.el7.elrepo.x86_64


#virsh version

Compiled against library: libvirt 1.2.8

Using library: libvirt 1.2.8

Using API: QEMU 1.2.8

Running hypervisor: QEMU 1.5.3



#cat libvirl.xml


<domain xmlns:qemu="http://libvirt.org/schemas/domain/qemu/1.0" type="kvm">  





    <boot dev="hd"/> 





  <clock offset="localtime"/>  




  <vcpu current="2">2</vcpu>  

  <cpu mode="host-passthrough"/>  





    <disk device="disk" type="file"> 

      <driver name="qemu" type="qcow2" cache="none"/>  

      <source file="/home/test.qcow2"/>  

      <target bus="virtio" dev="vda"/> 


    <disk type="file" device="cdrom"> 

      <source dev=""/>  

      <target dev="hdc" bus="ide"/> 


    <serial type="pty"> 

      <source path="/dev/pts/1"/>  

      <target port="0"/> 


    <input type="tablet" bus="usb"/>  

    <input type="mouse" bus="ps2"/>  

    <graphics type="vnc" port="-1" autoport="yes" keymap="en-us" listen=""/>  

    <channel type="unix">

      <source mode="bind" path="/var/lib/libvirt/qemu/test.org.qemu.guest_agent.0"/>

      <target type="virtio" name="org.qemu.guest_agent.0"/>







# qemu-img info /home/test.qcow2

image: /home/test.qcow2

file format: qcow2

virtual size: 50G (53687091200 bytes)

disk size: 0

cluster_size: 65536

backing file: /home/windows2012.raw

Format specific information:

    compat: 1.1

    lazy refcounts: false







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