Re: How to insert vcpupin in guest xml file

hongming <honzhang@xxxxxxxxxx> · Mon, 09 Sep 2013 11:39:20 +0800



    On 07/19/2013 04:51 PM, Peeyush Gupta
      wrote:

    
        Hi all,
        

        I am trying to add
            vcpupin in the guest xml file. I am working with openstack
            and the code I have is python bound. I investigated through
            the code and found that the elemets in xml file are set in
            get_guest_config function. Now the thing is I am not able to
            set vcpupin element. I mean I tried guest.cputune_vcpupin
            but it's not working.
      
    
    Hi Peeyush 

    
    In libvirt python -binding . You can find the following functions
    for pining  vcpus.

    
    class virDomain:

    .....

    
        def pinVcpu(self, vcpu, cpumap):

            """Dynamically change the real CPUs which can be allocated
    to a virtual CPU. This function requires privileged access to the
    hypervisor. """

            ret = libvirtmod.virDomainPinVcpu(self._o, vcpu, cpumap)

            if ret == -1: raise libvirtError ('virDomainPinVcpu()
    failed', dom=self)

            return ret

    
        def pinVcpuFlags(self, vcpu, cpumap, flags):

            """Dynamically change the real CPUs which can be allocated
    to a virtual CPU. This function requires privileged access to the
    hypervisor. """

            ret = libvirtmod.virDomainPinVcpuFlags(self._o, vcpu,
    cpumap, flags)

            if ret == -1: raise libvirtError ('virDomainPinVcpuFlags()
    failed', dom=self)

            return ret

    
    .......

    
        Help me out, please!
        Thanks.
         
        ~Peeyush Gupta
      
      
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