[libvirt] [test-API][PATCH] add new patch for testing pinemulator API

[Guannan Ren]

On 2013年11月22日 14:08, Xuesong Zhang wrote:
> ---
>   cases/pinemulator.conf      | 46 +++++++++++++++++++++++++
>   repos/domain/pinemulator.py | 84 +++++++++++++++++++++++++++++++++++++++++++++
>   2 files changed, 130 insertions(+)
>   create mode 100755 cases/pinemulator.conf
>   create mode 100755 repos/domain/pinemulator.py
>
> diff --git a/cases/pinemulator.conf b/cases/pinemulator.conf
> new file mode 100755
> index 0000000..2f270f3
> --- /dev/null
> +++ b/cases/pinemulator.conf
> @@ -0,0 +1,46 @@
> +domain:install_linux_cdrom
> +    guestname
> +        $defaultname
> +    guestos
> +        $defaultos
> +    guestarch
> +        $defaultarch
> +    vcpu
> +        $defaultvcpu
> +    memory
> +        $defaultmem
> +    hddriver
> +        $defaulthd
> +    nicdriver
> +        $defaultnic
> +    imageformat
> +        qcow2
> +
> +domain:pinemulator
> +    guestname
> +        $defaultname
> +    cpulist
> +        0-2
> +
> +domain:pinemulator
> +    guestname
> +        $defaultname
> +    cpulist
> +        3
> +
> +domain:pinemulator
> +    guestname
> +        $defaultname
> +    cpulist
> +        0,2
> +
> +domain:destroy
> +    guestname
> +        $defaultname
> +
> +
> +domain:undefine
> +    guestname
> +        $defaultname
> +
> +options cleanup=enable
> \ No newline at end of file
> diff --git a/repos/domain/pinemulator.py b/repos/domain/pinemulator.py
> new file mode 100755
> index 0000000..8d7b800
> --- /dev/null
> +++ b/repos/domain/pinemulator.py
> @@ -0,0 +1,84 @@
> +#!/usr/bin/env python
> +""" Query or change the pinning of domain's emulator threads to
> +  host physical CPUs."""
> +
> +
> +import libvirt
> +from libvirt import libvirtError
> +
> +from src import sharedmod
> +from utils import utils
> +
> +required_params = ('guestname', 'cpulist',)
> +optional_params = {}
> +
> +def check_pinemulator(guestname, maxcpu, pininfo_after):
> +    """check emulator status of the running virtual machine
> +    """
> +
> +    cmd = "cat /var/run/libvirt/qemu/%s.pid" % guestname
> +    status, pid = utils.exec_cmd(cmd, shell=True)
> +    if status:
> +        logger.error("failed to get the pid of domain %s" % guestname)
> +        return 1
> +
> +    cmd = "grep Cpus_allowed_list /proc/%s/task/%s/status" % (pid[0], pid[0])
> +    status, output = utils.exec_cmd(cmd, shell=True)
> +    if status:
> +        logger.error("failed to get Cpus_allowed_list")
> +        return 1
> +
> +    cpu_allowed_list = output[0]
> +    cpulistcheck = cpu_allowed_list.split('\t')[1]
> +    pininfo_in_process = str(utils.param_to_tuple(cpulistcheck, maxcpu))
> +
> +    if cmp(pininfo_in_process, pininfo_after):
> +        logger.error("domain emulator pin failed")
> +        return 1
> +    else:
> +        logger.info("domain emulator pin successed")
> +        return 0
> +
> +
> +def pinemulator(params):
> +    """Dynamically change the real CPUs which can be allocated to the
> +       emulator process of a domain. This function requires privileged
> +       access to the hypervisor. """
> +    global logger
> +    logger = params['logger']
> +    guestname = params['guestname']
> +    cpulist = params['cpulist']
> +
> +    logger.info("the name of virtual machine is %s" % guestname)
> +    logger.info("the given cpulist is %s" % cpulist)
> +
> +    maxcpu = utils.get_host_cpus()
> +    logger.info("%s physical cpu on host" % maxcpu)
> +
> +    cpumap = utils.param_to_tuple(cpulist, maxcpu)
> +    if not cpumap:
> +        logger.error("cpulist: Invalid format")
> +        return 1
> +
> +    conn = sharedmod.libvirtobj['conn']
> +
> +    try:
> +        domobj = conn.lookupByName(guestname)
> +
> +        pininfo_original = str(domobj.emulatorPinInfo())
> +        logger.info("the original emulator pin of the domain is: %s" % \
> +                    pininfo_original)
> +
> +        logger.info("pin domain emulator to host cpu %s" % cpulist)
> +        domobj.pinEmulator(cpumap)
> +
> +        pininfo_after = str(domobj.emulatorPinInfo())
> +        logger.info("the revised emulator pin of the domain is: %s" % \
> +                    pininfo_after)
> +
> +        ret = check_pinemulator(guestname, maxcpu, pininfo_after)
> +        return ret
> +
> +    except libvirtError, e:
> +        logger.error("libvirt call failed: " + str(e))
> +        return 1

ACK and pushed
Thanks

Guannan