libvirt users - Jun 2014 - Re: Unable to migrate vm from redhat to ubuntu using virsh migrate

Hello All,
 I am working on migrating the vm from redhat to ubuntu. the emulator value is
as below.
 Ubuntu: <emulator>/usr/bin/qemu-system-x86_64</emulator>
redhat: <emulator>/usr/libexec/qemu-kvm</emulator>

When i try to migrate from redhat, i get the following error. It would be great
help if you can
suggest how to workaround the issue.

 virsh migrate --live --verbose --persistent vm1 qemu+ssh://host-3/system 
error: Cannot check QEMU binary /usr/libexec/qemu-kvm: No such file or directory

Thanks in advance,
Mani

On 2014-06-29 04:24, Mani Devarajan wrote:
> Hello All,
>  I am working on migrating the vm from redhat to ubuntu. the emulator
> value is as below.
>  Ubuntu: <emulator>/usr/bin/qemu-system-x86_64</emulator>
> redhat: <emulator>/usr/libexec/qemu-kvm</emulator>
Create a symlink?
> When i try to migrate from redhat, i get the following error. It would
> be great help if you can
> suggest how to workaround the issue.
> 
>  virsh migrate --live --verbose --persistent vm1 qemu+ssh://host-3/system 
> error: Cannot check QEMU binary /usr/libexec/qemu-kvm: No such file or
> directory
> 
> Thanks in advance,
> Mani
>  
> 
> 
> _______________________________________________
> libvirt-users mailing list
> libvirt-users@redhat.com
> https://www.redhat.com/mailman/listinfo/libvirt-users
> 
-- 
Mit freundlichen Grüßen, / Best Regards,
Sven Schwedas
Systemadministrator
TAO Beratungs- und Management GmbH | Lendplatz 45 | A - 8020 Graz
Mail/XMPP: sven.schwedas@tao.at | +43 (0)680 301 7167
http://software.tao.at

----- Original Message -----
> From: "Sven Schwedas" <sven.schwedas@tao.at>
> To: libvirt-users@redhat.com
> Sent: Monday, June 30, 2014 9:48:41 AM
> Subject: Re: [libvirt-users] Unable to migrate vm from redhat to ubuntu
using virsh migrate
> 
> 
> On 2014-06-29 04:24, Mani Devarajan wrote:
> > Hello All,
> >  I am working on migrating the vm from redhat to ubuntu. the emulator
> > value is as below.
> >  Ubuntu: <emulator>/usr/bin/qemu-system-x86_64</emulator>
> > redhat: <emulator>/usr/libexec/qemu-kvm</emulator>
> 
> Create a symlink?
It's going to need  much more than that. Different versions of QEMU, with
different settings, features etc.
> 
> > When i try to migrate from redhat, i get the following error. It would
> > be great help if you can
> > suggest how to workaround the issue.
> > 
> >  virsh migrate --live --verbose --persistent vm1
qemu+ssh://host-3/system
> > error: Cannot check QEMU binary /usr/libexec/qemu-kvm: No such file or
> > directory
> > 
> > Thanks in advance,
> > Mani
> >  
> > 
> > 
> > _______________________________________________
> > libvirt-users mailing list
> > libvirt-users@redhat.com
> > https://www.redhat.com/mailman/listinfo/libvirt-users
> > 
> 
> --
> Mit freundlichen Grüßen, / Best Regards,
> Sven Schwedas
> Systemadministrator
> TAO Beratungs- und Management GmbH | Lendplatz 45 | A - 8020 Graz
> Mail/XMPP: sven.schwedas@tao.at | +43 (0)680 301 7167
> http://software.tao.at
> 
> 
> _______________________________________________
> libvirt-users mailing list
> libvirt-users@redhat.com
> https://www.redhat.com/mailman/listinfo/libvirt-users

On Sat, Jun 28, 2014 at 07:24:51PM -0700, Mani Devarajan
wrote:
>Hello All,
>I am working on migrating the vm from redhat to ubuntu. the emulator value
is as below.
>Ubuntu: <emulator>/usr/bin/qemu-system-x86_64</emulator>
>redhat: <emulator>/usr/libexec/qemu-kvm</emulator>
>
>When i try to migrate from redhat, i get the following error. It would be
great help if you can
>suggest how to workaround the issue.
>
>virsh migrate --live --verbose --persistent vm1 qemu+ssh://host-3/system
>error: Cannot check QEMU binary /usr/libexec/qemu-kvm: No such file or
directory
>
That API provides you with the possibility of changing the destination
xml, see 'man virsh', the parameter --xml should do what you want.  If
you want to automate this change between such hosts, you can do that
with hooks [1].

Martin

[1] http://libvirt.org/hooks.html
>Thanks in advance,
>Mani
>_______________________________________________
>libvirt-users mailing list
>libvirt-users@redhat.com
>https://www.redhat.com/mailman/listinfo/libvirt-users

On Sat, Jun 28, 2014 at 07:24:51PM -0700, Mani Devarajan
wrote:
> Hello All,
>  I am working on migrating the vm from redhat to ubuntu.
I'd really recommend you to to try to do this, it'll give you no end of
pain & suffering.  The different file path is the least of your worries.
Much more critical is having compatible guest ABI machine types for both
distros. Neither distro claims & attempts to maintain such ABI compat.
This will likely cause live migration to crash & burn.

Regards,
Daniel
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