[libvirt-users] Libvirt Live Migration

[Dhia Abbassi]

I installed CentOS 7 which supported by default a newer version of qemu-kvm
(qemu-kvm-1.5.3-60.el7.x86_64.rpm) but this time I got new error:
<< error: internal error: unable to execute QEMU command 'migrate': this
feature or command is not currently supported  >>

but it's kind of wired because qemu-kvm-1.0 supported already live
migration, so a newer version should also support it.

How can you explain this? What could be the source of error?

On 1 December 2014 at 14:34, Dhia Abbassi <dhia.absi at gmail.com> wrote:

> I tired to install newer version of qemu-kvm (2.1.0-2.9-x86_64) through
> rpms but the following rpms are not all available
>
> - qemu-2.1.0-2.9-x86_64.rpm
> - qemu-kvm-2.1.0-2.9-x86_64.rpm
> - qemu-common-2.1.0-2.9-x86_64.rpm
> - qemu-kvm-tools-2.1.0-2.9-x86_64.rpm
> - qemu-debuginfo-2.1.0-2.9-x86_64.rpm
> - qemu-system-x86-2.1.0-2.9-x86_64.rpm
> - qemu-guest-agent-2.1.0-2.9-x86_64.rpm
> - qemu-user-2.1.0-2.9-x86_64.rpm
> - qemu-img-2.1.0-2.9-x86_64.rpm
>
> So I changed from Centos 6.6 to Ubuntu 14.04 because the environment setup
> is much easier, some bugs had been fixed but the migration did not work at
> all
> and I got this error message "*error: internal error: unable to execute
> QEMU command 'drive-mirror*'*: Failed to connect to socket:
> Invalid argument*"
> I thought it's security issue so I disabled the SELINUX and I make some
> firwall configuration but the problem persist:
> <<
>
> * sudo iptables -A INPUT -p tcp -m multiport --ports 16509 -m comment
> --comment "libvirt" -j ACCEPT*
> * sudo iptables -A INPUT -p tcp -m multiport --ports 49152:49216 -m
> comment --comment "migration" -j ACCEPT*
> >>
>  Have you any idea what is the reason behind this problem??
>
> On 24 November 2014 at 11:32, Dhia Abbassi <dhia.absi at gmail.com> wrote:
>
>> I will try a newer version.
>>
>> On 24 November 2014 at 11:30, Michal Privoznik <mprivozn at redhat.com>
>> wrote:
>>
>>> On 24.11.2014 11:23, Dhia Abbassi wrote:
>>>
>>>> Thanks for your answer,
>>>>
>>>> 1) In this case i'm not using shared storage, the migration is happening
>>>> between two non-shared storage with full disk copy
>>>> 2) I already created the file with same size, and the vm
>>>> works properly after a restart, my problem that it remains paused and I
>>>> can't resume it until it's rebooted.
>>>> 3) I'm using qemu-kvm 1.0
>>>>
>>>
>>> This may be the root of problem. That's nearly 3 years old qemu.
>>>
>>> Michal
>>>
>>
>>
>
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