[Libguestfs] Virt-v2v conversion issue

VONDRA Alain AVONDRA at unicef.fr
Wed Oct 15 16:32:38 UTC 2014


The script as worked perfectly :

+ size=100G
+ virt-builder fedora-20 --size 100G -o /tmp/in.img
gpg: Signature faite le mar. 08 juil. 2014 11:11:00 CEST avec la clef RSA d'identifiant E1B768A0
gpg: Bonne signature de « Richard W.M. Jones <rjones at redhat.com> »
gpg:                 alias « Richard W.M. Jones <rich at annexia.org> »
gpg: Attention : cette clef n'est pas certifiée avec une signature de confiance.
gpg:             Rien n'indique que la signature appartient à son propriétaire.
Empreinte de clef principale : F777 4FB1 AD07 4A7E 8C87  67EA 9173 8F73 E1B7 68A0
[   1,0] Downloading: http://libguestfs.org/download/builder/fedora-20.xz
######################################################################## 100,0%
[ 718,0] Planning how to build this image
[ 718,0] Uncompressing
[ 737,0] Resizing (using virt-resize) to expand the disk to 100,0G
[ 786,0] Opening the new disk
[ 792,0] Setting a random seed
[ 792,0] Setting passwords
[ 794,0] Finishing off
                   Output file: /tmp/in.img
                   Output size: 100,0G
                 Output format: raw
            Total usable space: 97,7G
                    Free space: 97,0G (99%)
+ guestfish -a /tmp/in.img -i
+ qemu-img create -q -f qcow2 -b /tmp/in.img -o compat=1.1,backing_fmt=raw /tmp/overlay.qcow2
+ truncate -s 100G /tmp/out.img
+ qemu-img convert -p -n -f qcow2 /tmp/overlay.qcow2 -O raw /tmp/out.img
    (100.00/100%)

real    2m50.364s
user    0m36.146s
sys     2m3.548s

I run again a conversion to try to catch a core dump...
Alain




-----Message d'origine-----
De : Richard W.M. Jones [mailto:rjones at redhat.com] 
Envoyé : mercredi 15 octobre 2014 17:52
À : VONDRA Alain
Cc : libguestfs at redhat.com
Objet : Re: [Libguestfs] Virt-v2v conversion issue

On Wed, Oct 15, 2014 at 03:23:39PM +0000, VONDRA Alain wrote:
> I see only qemu-img consumming some CPU and MEM :
> 
> 25897 qemu      20   0 5825976 2,429g   4368 S   5,6 32,2 603:09.34 qemu-kvm

That's qemu, not qemu-img.

> I have indeed, some nfs errors :
> 
> [475747.296041] nfs: server 192.203.100.247 not responding, still 
> trying [475747.772022] nfs: server 192.203.100.247 not responding, 
> still trying [475747.848023] nfs: server 192.203.100.247 not 
> responding, still trying [475747.849014] nfs: server 192.203.100.247 
> not responding, still trying [475748.270030] nfs: server 
> 192.203.100.247 not responding, still trying [475748.270038] nfs: 
> server 192.203.100.247 not responding, still trying [475748.273016] 
> nfs: server 192.203.100.247 not responding, still trying 
> [475748.274016] nfs: server 192.203.100.247 not responding, still 
> trying [475748.461023] nfs: server 192.203.100.247 not responding, 
> still trying [475748.461028] nfs: server 192.203.100.247 not 
> responding, still trying [475748.461031] nfs: server 192.203.100.247 
> not responding, still trying [475748.461034] nfs: server 
> 192.203.100.247 not responding, still trying

These are a problem, if they are coincident with qemu-img hanging.
Use 'dmesg -w' to check.

> And a lot of :
> [785084.263606] kvm [12719]: vcpu0 unhandled rdmsr: 0x345 
> [785084.269594] kvm [12719]: vcpu0 unhandled wrmsr: 0x40 data 0 
> [785084.269999] kvm [12719]: vcpu0 unhandled wrmsr: 0x60 data 0 
> [785084.270406] kvm [12719]: vcpu0 unhandled wrmsr: 0x41 data 0 
> [785084.270826] kvm [12719]: vcpu0 unhandled wrmsr: 0x61 data 0 
> [785084.271231] kvm [12719]: vcpu0 unhandled wrmsr: 0x42 data 0 
> [785084.271633] kvm [12719]: vcpu0 unhandled wrmsr: 0x62 data 0 
> [785084.272023] kvm [12719]: vcpu0 unhandled wrmsr: 0x43 data 0 
> [785084.272410] kvm [12719]: vcpu0 unhandled wrmsr: 0x63 data 0

You can ignore this warning.  It is meaningless for the end user and doesn't matter.

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




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