Re: [Xen-users] Issues with vcpu-set

[Yun Wang <bimingery@xxxxxxxxx>]

Sorry for the so late reply.
I had this issue in Xen-4.3.0 (official release) and Xen-4.4.0-rc1-25-g9a80d50

Here is the /var/log/xen/
Waiting for domain centos65.pv (domid 1) to die [pid 8116]


Here is the output of "xl -vvv vcpu-set"

libxl: debug: libxl_qmp.c:707:libxl__qmp_initialize: connected to
/var/run/xen/qmp-libxl-1

libxl: debug: libxl_qmp.c:299:qmp_handle_response: message type: qmp

libxl: debug: libxl_qmp.c:555:qmp_send_prepare: next qmp command: '{

    "execute": "qmp_capabilities",

    "id": 1

}

'

libxl: debug: libxl_qmp.c:299:qmp_handle_response: message type: return

libxl: debug: libxl_qmp.c:555:qmp_send_prepare: next qmp command: '{

    "execute": "cpu-add",

    "id": 2,

    "arguments": {

        "id": 0

    }

}

'

libxl: debug: libxl_qmp.c:299:qmp_handle_response: message type: error

libxl: error: libxl_qmp.c:289:qmp_handle_error_response: received an
error message from QMP server: Not supported

xc: debug: hypercall buffer: total allocations:9 total releases:9

xc: debug: hypercall buffer: current allocations:0 maximum allocations:2

xc: debug: hypercall buffer: cache current size:2

xc: debug: hypercall buffer: cache hits:7 misses:2 toobig:0

On Tue, Oct 1, 2013 at 3:24 AM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> On Mon, 2013-09-30 at 10:52 -0600, Yun Wang wrote:
>> Hi all,
>>
>> I tried to use "xl vcpu-set" to change the vCPU number of VMs in Xen
>> 4.4-unstable and had the following errors.
>
> What was the full command line which you used?
>
> Which exact version of 4.4-unstable (i.e. git commit) were you using?
>
>> libxl: error: libxl_qmp.c:289:qmp_handle_error_response: received an
>> error message from QMP server: Unable to add CPU: 0, it already
>> exists.
>>
>> CPU hotplug is enabled in the guest OS.
>
> Please can you provide your guest cfg file and any relevant logs from
> under /var/log/xen (especially the ones with the guest name in them).
>
> Please also try "xl -vvv vcpu-set ..." and provide the full logs of that
> attempt.
>
> Ian.
>

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