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



Here is the PV guest config
#########################
name = "centos65.pv"
bootloader = "/usr/local/bin/pygrub"
extra = "root=/dev/xvda"
memory = 4096
vcpus = 2
vfb=[ "type=vnc, vncpass=123456" ]
vif = [ 'mac=00:16:3e:54:02:01, bridge=xenbr0' ]
disk = [ 'file:/vms/centos65_pv.img, xvda, w']
######################################


The output of "xl -vvv vcpu-set"
########################

libxl: debug: libxl_qmp.c:696:libxl__qmp_initialize: connected to
/var/run/xen/qmp-libxl-38

libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: qmp

libxl: debug: libxl_qmp.c:546:qmp_send_prepare: next qmp command: '{

    "execute": "qmp_capabilities",

    "id": 1

}

'

libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return

libxl: debug: libxl_qmp.c:546:qmp_send_prepare: next qmp command: '{

    "execute": "cpu-add",

    "id": 2,

    "arguments": {

        "id": 0

    }

}

'

libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: error

libxl: error: libxl_qmp.c:287: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
######################################
Again, this issue exists both on Xen-4.3.0 (official release) and
Xen-4.4.0-rc1-25-g9a80d50

On Wed, Jan 29, 2014 at 7:45 AM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> On Wed, 2014-01-29 at 07:38 -0700, Yun Wang wrote:
>> So to fix the problem, I need to update the qemu version to version
>> 1.7 or later?
>
> Yes. Or, AIUI, you can use the version of Qemu which is bundled with the
> Xen releases.
>
>> BTW. I had this problem in both pvhvm and pv guest.
>> Does pv guest rely on qemu also?
>
> It does not.
>
> If you are having an issue with a PV guest vcpu hotplug then it is not
> the same underlying issue. Please report it separately with full logs,
> config info etc.
>
> Ian.
>

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