[libvirt] Migration issue php-libvirt

[Umar Draz]

Hi Claudio

Here is my PHP code

<?php

    echo ("Looking up test domain\n");

    $con = new Libvirt('qemu+tcp://192.168.168.11/system');
    $duri = 'qemu+tcp://192.168.168.14/system';

    $dom = $con->get_domain_by_name("ldap");
    if ($dom==false)
    {
       echo ("Domain not found\n");
       echo ("Libvirt last error: ".libvirt_get_last_error()."\n");
       exit;
    }
    echo ("Domain found\n");

    echo ("Migrating domain to $duri\n");
    $rv=libvirt_domain_migrate_to_uri($dom,$duri, VIR_MIGRATE_PEER2PEER |
VIR_MIGRATE_UNSAFE | VIR_MIGRATE_OFFLINE | VIR_MIGRATE_PERSI
ST_DEST | VIR_MIGRATE_UNDEFINE_SOURCE);
    if ($rv==false)
    {
       echo ("Failure!");
       echo ("Libvirt last error: ".libvirt_get_last_error()."\n");
    }
    else
    {
       echo ("Success\n");
    }


Here is the error message when I tried to migrate (powered off) domain
----------------------------------------------------------------------
*Looking up test domain*
*Domain found*
*Migrating domain to qemu+tcp://192.168.168.14/system*
*Failure!Libvirt last error: Requested operation is not valid: domain is
not running*


And here is the error message when I tried (powered on) domain
--------------------------------------------------------------
*Looking up test domain*
*Domain found*
*Migrating domain to qemu+tcp://192.168.168.14/system*
*Failure!Libvirt last error: Unsafe migration: Migration may lead to data
corruption if disks use cache != none*


Here is the php_error_logs
--------------------------
*[17-Oct-2013 05:17:42 America/New_York] PHP Notice:  Use of undefined
constant VIR_MIGRATE_UNSAFE - assumed 'VIR_MIGRATE_UNSAFE' in
/home/www/virtspace/inc/mig.php on line 21*
*[17-Oct-2013 05:17:42 America/New_York] PHP Notice:  Use of undefined
constant VIR_MIGRATE_OFFLINE - assumed 'VIR_MIGRATE_OFFLINE' in
/home/www/virtspace/inc/mig.php on line 21*

According to above php_notices, both VIR_OFFLINE AND VIR_UNSAFE options are
not available.

*My libvirt version on kvm hosts is (1000002), and php-libvirt version is
(0.4.8)*

Br.

Umar


On Thu, Oct 17, 2013 at 11:14 AM, Claudio Bley <cbley at av-test.de> wrote:

> [Please, don't top post on technical lists.]
>
> At Thu, 17 Oct 2013 08:40:52 +0500,
> Umar Draz wrote:
> >
> > HI,
> >
> > I am using KVM
>
> Could you tell us a bit more about your setup and show your code?
> Which version of libvirt are you using?
>
> My guess would be that you don't have shared storage and are using
> the VIR_MIGRATE_NON_SHARED_DISK flag when migrating, which only works
> if the domain is running.
>
> In that case, you could start your domain in the 'paused' state,
> migrate and then destroy it.
>
> > On Tue, Oct 15, 2013 at 4:11 PM, Daniel P. Berrange <berrange at redhat.com
> >wrote:
> >
> > > On Sun, Oct 13, 2013 at 03:20:31PM +0500, Umar Draz wrote:
> > > > Hi All
> > > >
> > > > I am trying to migrate offline domain on other URI but its not
> working
> > > >
> > > > due to this error
> > > >
> > > > Failure!Libvirt last error: Requested operation is not valid: domain
> is
> > > not
> > > > running
> > > >
> > > > I tried to use this option but not working
> > > >
> > > > VIR_MIGRATE_OFFLINE
> > > >
> > > > Please anybody help me?
> > >
> > > You don't mention what hypervisor you're using. IIRC only the QEMU
> driver
> > > supports the VIR_MIGRATE_OFFLINE flag.
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-- 
Umar Draz
Network Architect
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