Add output.xml with only INFO logging leve
[csit.git] / resources / libraries / python / QemuUtils.py
index 244ece2..193390c 100644 (file)
@@ -1,4 +1,4 @@
-# Copyright (c) 2016 Cisco and/or its affiliates.
+# Copyright (c) 2019 Cisco and/or its affiliates.
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at:
 
 """QEMU utilities library."""
 
-from time import time, sleep
+from time import sleep
+from string import Template
 import json
+from re import match
+# Disable due to pylint bug
+# pylint: disable=no-name-in-module,import-error
+from distutils.version import StrictVersion
 
 from robot.api import logger
+from resources.libraries.python.ssh import exec_cmd, exec_cmd_no_error
+from resources.libraries.python.Constants import Constants
+from resources.libraries.python.DpdkUtil import DpdkUtil
+from resources.libraries.python.DUTSetup import DUTSetup
+from resources.libraries.python.topology import NodeType, Topology
+from resources.libraries.python.VppConfigGenerator import VppConfigGenerator
+from resources.libraries.python.VPPUtil import VPPUtil
 
-from resources.libraries.python.ssh import SSH, SSHTimeout
-from resources.libraries.python.constants import Constants
-from resources.libraries.python.topology import NodeType
+__all__ = ["QemuOptions", "QemuUtils"]
+
+
+class QemuOptions(object):
+    """QEMU option class.
+
+    The class can handle input parameters that acts as QEMU command line
+    parameters. The only variable is a list of dictionaries where dictionaries
+    can be added multiple times. This emulates the QEMU behavior where one
+    command line parameter can be used multiple times (1..N). Example can be
+    device or object (so it is not an issue to have one memory
+    block of 2G and and second memory block of 512M but from other numa).
+
+    Class does support get value or string representation that will return
+    space separated, dash prefixed string of key value pairs used for command
+    line.
+    """
+
+    # Use one instance of class per tests.
+    ROBOT_LIBRARY_SCOPE = 'TEST CASE'
+
+    def __init__(self):
+        self.variables = list()
+
+    def add(self, variable, value):
+        """Add parameter to the list.
+
+        :param variable: QEMU parameter name (without dash).
+        :param value: Paired value.
+        :type variable: str
+        :type value: str or int
+        """
+        self.variables.append({str(variable): value})
+
+    def __str__(self):
+        """Return space separated string of key value pairs.
+
+        The format is suitable to be pasted to qemu command line.
+
+        :returns: Space separated string of key value pairs.
+        :rtype: str
+        """
+        return " ".join(["-{k} {v}".format(k=d.keys()[0], v=d.values()[0])
+                         for d in self.variables])
 
 
 class QemuUtils(object):
     """QEMU utilities."""
 
-    def __init__(self, qemu_id=1):
-        self._qemu_id = qemu_id
-        # Path to QEMU binary
-        self._qemu_bin = '/usr/bin/qemu-system-x86_64'
-        # QEMU Machine Protocol socket
-        self._qmp_sock = '/tmp/qmp{0}.sock'.format(self._qemu_id)
-        # QEMU Guest Agent socket
-        self._qga_sock = '/tmp/qga{0}.sock'.format(self._qemu_id)
-        self._qemu_opt = {}
-        # Default 1 CPU.
-        self._qemu_opt['smp'] = '-smp 1,sockets=1,cores=1,threads=1'
-        # Daemonize the QEMU process after initialization. Default one
-        # management interface.
-        self._qemu_opt['options'] = '-cpu host -daemonize -enable-kvm ' \
-            '-machine pc,accel=kvm,usb=off,mem-merge=off ' \
-            '-net nic,macaddr=52:54:00:00:00:{0:02x} -balloon none'\
-            .format(self._qemu_id)
-        self._qemu_opt['ssh_fwd_port'] = 10022
-        # Default serial console port
-        self._qemu_opt['serial_port'] = 4556
-        # Default 512MB virtual RAM
-        self._qemu_opt['mem_size'] = 512
-        # Default huge page mount point, required for Vhost-user interfaces.
-        self._qemu_opt['huge_mnt'] = '/mnt/huge'
-        # Default do not allocate huge pages.
-        self._qemu_opt['huge_allocate'] = False
-        # Default image for CSIT virl setup
-        self._qemu_opt['disk_image'] = '/var/lib/vm/vhost-nested.img'
-        # VM node info dict
+    # Use one instance of class per tests.
+    ROBOT_LIBRARY_SCOPE = 'TEST CASE'
+
+    def __init__(self, node, qemu_id=1, smp=1, mem=512, vnf=None,
+                 img='/var/lib/vm/vhost-nested.img', bin_path='/usr/bin'):
+        """Initialize QemuUtil class.
+
+        :param node: Node to run QEMU on.
+        :param qemu_id: QEMU identifier.
+        :param smp: Number of virtual SMP units (cores).
+        :param mem: Amount of memory.
+        :param vnf: Network function workload.
+        :param img: QEMU disk image or kernel image path.
+        :param bin_path: QEMU binary path.
+        :type node: dict
+        :type qemu_id: int
+        :type smp: int
+        :type mem: int
+        :type vnf: str
+        :type img: str
+        :type bin_path: str
+        """
+        self._vhost_id = 0
+        self._node = node
         self._vm_info = {
+            'host': node['host'],
             'type': NodeType.VM,
-            'port': self._qemu_opt['ssh_fwd_port'],
+            'port': 10021 + qemu_id,
+            'serial': 4555 + qemu_id,
             'username': 'cisco',
             'password': 'cisco',
             'interfaces': {},
         }
-        # Virtio queue count
-        self._qemu_opt['queues'] = 1
-        self._vhost_id = 0
-        self._ssh = None
-        self._node = None
-        self._socks = [self._qmp_sock, self._qga_sock]
-
-    def qemu_set_bin(self, path):
-        """Set binary path for QEMU.
-
-        :param path: Absolute path in filesystem.
-        :type path: str
+        if node['port'] != 22:
+            self._vm_info['host_port'] = node['port']
+            self._vm_info['host_username'] = node['username']
+            self._vm_info['host_password'] = node['password']
+        # Input Options.
+        self._opt = dict()
+        self._opt['qemu_id'] = qemu_id
+        self._opt['bin_path'] = bin_path
+        self._opt['mem'] = int(mem)
+        self._opt['smp'] = int(smp)
+        self._opt['img'] = img
+        self._opt['vnf'] = vnf
+        # Temporary files.
+        self._temp = dict()
+        self._temp['pidfile'] = '/var/run/qemu_{id}.pid'.format(id=qemu_id)
+        if '/var/lib/vm/' in img:
+            self._opt['vm_type'] = 'nestedvm'
+            self._temp['qmp'] = '/var/run/qmp_{id}.sock'.format(id=qemu_id)
+            self._temp['qga'] = '/var/run/qga_{id}.sock'.format(id=qemu_id)
+        elif '/opt/boot/vmlinuz' in img:
+            self._opt['vm_type'] = 'kernelvm'
+            self._temp['log'] = '/tmp/serial_{id}.log'.format(id=qemu_id)
+            self._temp['ini'] = '/etc/vm_init_{id}.conf'.format(id=qemu_id)
+        else:
+            raise RuntimeError('QEMU: Unknown VM image option!')
+        # Computed parameters for QEMU command line.
+        self._params = QemuOptions()
+        self.add_params()
+
+    def add_params(self):
+        """Set QEMU command line parameters."""
+        self.add_default_params()
+        if self._opt.get('vm_type', '') == 'nestedvm':
+            self.add_nestedvm_params()
+        elif self._opt.get('vm_type', '') == 'kernelvm':
+            self.add_kernelvm_params()
+        else:
+            raise RuntimeError('QEMU: Unsupported VM type!')
+
+    def add_default_params(self):
+        """Set default QEMU command line parameters."""
+        self._params.add('daemonize', '')
+        self._params.add('nodefaults', '')
+        self._params.add('name', 'vnf{qemu},debug-threads=on'.
+                         format(qemu=self._opt.get('qemu_id')))
+        self._params.add('no-user-config', '')
+        self._params.add('monitor', 'none')
+        self._params.add('display', 'none')
+        self._params.add('vga', 'none')
+        self._params.add('enable-kvm', '')
+        self._params.add('pidfile', '{pidfile}'.
+                         format(pidfile=self._temp.get('pidfile')))
+        self._params.add('cpu', 'host')
+        self._params.add('machine', 'pc,accel=kvm,usb=off,mem-merge=off')
+        self._params.add('smp', '{smp},sockets=1,cores={smp},threads=1'.
+                         format(smp=self._opt.get('smp')))
+        self._params.add('object',
+                         'memory-backend-file,id=mem,size={mem}M,'
+                         'mem-path=/dev/hugepages,share=on'.
+                         format(mem=self._opt.get('mem')))
+        self._params.add('m', '{mem}M'.
+                         format(mem=self._opt.get('mem')))
+        self._params.add('numa', 'node,memdev=mem')
+        self._params.add('balloon', 'none')
+
+    def add_nestedvm_params(self):
+        """Set NestedVM QEMU parameters."""
+        self._params.add('net', 'nic,macaddr=52:54:00:00:{qemu:02x}:ff'.
+                         format(qemu=self._opt.get('qemu_id')))
+        self._params.add('net', 'user,hostfwd=tcp::{info[port]}-:22'.
+                         format(info=self._vm_info))
+        # TODO: Remove try except after fully migrated to Bionic or
+        # qemu_set_node is removed.
+        try:
+            locking = ',file.locking=off'\
+                if self.qemu_version(version='2.10') else ''
+        except AttributeError:
+            locking = ''
+        self._params.add('drive',
+                         'file={img},format=raw,cache=none,if=virtio{locking}'.
+                         format(img=self._opt.get('img'), locking=locking))
+        self._params.add('qmp', 'unix:{qmp},server,nowait'.
+                         format(qmp=self._temp.get('qmp')))
+        self._params.add('chardev', 'socket,host=127.0.0.1,port={info[serial]},'
+                         'id=gnc0,server,nowait'.format(info=self._vm_info))
+        self._params.add('device', 'isa-serial,chardev=gnc0')
+        self._params.add('chardev',
+                         'socket,path={qga},server,nowait,id=qga0'.
+                         format(qga=self._temp.get('qga')))
+        self._params.add('device', 'isa-serial,chardev=qga0')
+
+    def add_kernelvm_params(self):
+        """Set KernelVM QEMU parameters."""
+        self._params.add('chardev', 'file,id=char0,path={log}'.
+                         format(log=self._temp.get('log')))
+        self._params.add('device', 'isa-serial,chardev=char0')
+        self._params.add('fsdev', 'local,id=root9p,path=/,security_model=none')
+        self._params.add('device',
+                         'virtio-9p-pci,fsdev=root9p,mount_tag=/dev/root')
+        self._params.add('kernel', '$(readlink -m {img}* | tail -1)'.
+                         format(img=self._opt.get('img')))
+        self._params.add('append',
+                         '"ro rootfstype=9p rootflags=trans=virtio '
+                         'console=ttyS0 tsc=reliable hugepages=256 '
+                         'init={init}"'.format(init=self._temp.get('ini')))
+
+    def create_kernelvm_config_vpp(self, **kwargs):
+        """Create QEMU VPP config files.
+
+        :param kwargs: Key-value pairs to replace content of VPP configuration
+            file.
+        :type kwargs: dict
         """
-        self._qemu_bin = path
-
-    def qemu_set_smp(self, cpus, cores, threads, sockets):
-        """Set SMP option for QEMU.
-
-        :param cpus: Number of CPUs.
-        :param cores: Number of CPU cores on one socket.
-        :param threads: Number of threads on one CPU core.
-        :param sockets: Number of discrete sockets in the system.
-        :type cpus: int
-        :type cores: int
-        :type threads: int
-        :type sockets: int
+        startup = ('/etc/vpp/vm_startup_{id}.conf'.
+                   format(id=self._opt.get('qemu_id')))
+        running = ('/etc/vpp/vm_running_{id}.exec'.
+                   format(id=self._opt.get('qemu_id')))
+
+        self._temp['startup'] = startup
+        self._temp['running'] = running
+        self._opt['vnf_bin'] = ('/usr/bin/vpp -c {startup}'.
+                                format(startup=startup))
+
+        # Create VPP startup configuration.
+        vpp_config = VppConfigGenerator()
+        vpp_config.set_node(self._node)
+        vpp_config.add_unix_nodaemon()
+        vpp_config.add_unix_cli_listen()
+        vpp_config.add_unix_exec(running)
+        vpp_config.add_cpu_main_core('0')
+        vpp_config.add_cpu_corelist_workers('1-{smp}'.
+                                            format(smp=self._opt.get('smp')-1))
+        vpp_config.add_dpdk_dev('0000:00:06.0', '0000:00:07.0')
+        vpp_config.add_dpdk_log_level('debug')
+        if not kwargs['jumbo_frames']:
+            vpp_config.add_dpdk_no_multi_seg()
+            vpp_config.add_dpdk_no_tx_checksum_offload()
+        vpp_config.add_plugin('disable', 'default')
+        vpp_config.add_plugin('enable', 'dpdk_plugin.so')
+        vpp_config.apply_config(startup, restart_vpp=False)
+
+        # Create VPP running configuration.
+        template = '{res}/{tpl}.exec'.format(res=Constants.RESOURCES_TPL_VM,
+                                             tpl=self._opt.get('vnf'))
+        exec_cmd_no_error(self._node, 'rm -f {running}'.format(running=running),
+                          sudo=True)
+
+        with open(template, 'r') as src_file:
+            src = Template(src_file.read())
+            exec_cmd_no_error(self._node, "echo '{out}' | sudo tee {running}".
+                              format(out=src.safe_substitute(**kwargs),
+                                     running=running))
+
+    def create_kernelvm_config_testpmd_io(self, **kwargs):
+        """Create QEMU testpmd-io command line.
+
+        :param kwargs: Key-value pairs to construct command line parameters.
+        :type kwargs: dict
         """
-        self._qemu_opt['smp'] = '-smp {},cores={},threads={},sockets={}'.format(
-            cpus, cores, threads, sockets)
-
-    def qemu_set_ssh_fwd_port(self, fwd_port):
-        """Set host port for guest SSH forwarding.
-
-        :param fwd_port: Port number on host for guest SSH forwarding.
-        :type fwd_port: int
+        testpmd_path = ('{path}/{arch}-native-linuxapp-gcc/app'.
+                        format(path=Constants.QEMU_PERF_VM_DPDK,
+                               arch=Topology.get_node_arch(self._node)))
+        testpmd_cmd = DpdkUtil.get_testpmd_cmdline(
+            eal_corelist='0-{smp}'.format(smp=self._opt.get('smp') - 1),
+            eal_driver=False,
+            eal_in_memory=True,
+            pmd_num_mbufs=16384,
+            pmd_rxq=kwargs['queues'],
+            pmd_txq=kwargs['queues'],
+            pmd_tx_offloads=False,
+            pmd_disable_hw_vlan=False,
+            pmd_max_pkt_len=9200 if kwargs['jumbo_frames'] else None,
+            pmd_nb_cores=str(self._opt.get('smp') - 1))
+
+        self._opt['vnf_bin'] = ('{testpmd_path}/{testpmd_cmd}'.
+                                format(testpmd_path=testpmd_path,
+                                       testpmd_cmd=testpmd_cmd))
+
+    def create_kernelvm_config_testpmd_mac(self, **kwargs):
+        """Create QEMU testpmd-mac command line.
+
+        :param kwargs: Key-value pairs to construct command line parameters.
+        :type kwargs: dict
         """
-        self._qemu_opt['ssh_fwd_port'] = fwd_port
-        self._vm_info['port'] = fwd_port
-
-    def qemu_set_serial_port(self, port):
-        """Set serial console port.
-
-        :param port: Serial console port.
-        :type port: int
+        testpmd_path = ('{path}/{arch}-native-linuxapp-gcc/app'.
+                        format(path=Constants.QEMU_PERF_VM_DPDK,
+                               arch=Topology.get_node_arch(self._node)))
+        testpmd_cmd = DpdkUtil.get_testpmd_cmdline(
+            eal_corelist='0-{smp}'.format(smp=self._opt.get('smp') - 1),
+            eal_driver=False,
+            eal_in_memory=True,
+            pmd_num_mbufs=16384,
+            pmd_fwd_mode='mac',
+            pmd_eth_peer_0='0,{mac}'.format(mac=kwargs['vif1_mac']),
+            pmd_eth_peer_1='1,{mac}'.format(mac=kwargs['vif2_mac']),
+            pmd_rxq=kwargs['queues'],
+            pmd_txq=kwargs['queues'],
+            pmd_tx_offloads=False,
+            pmd_disable_hw_vlan=False,
+            pmd_max_pkt_len=9200 if kwargs['jumbo_frames'] else None,
+            pmd_nb_cores=str(self._opt.get('smp') - 1))
+
+        self._opt['vnf_bin'] = ('{testpmd_path}/{testpmd_cmd}'.
+                                format(testpmd_path=testpmd_path,
+                                       testpmd_cmd=testpmd_cmd))
+
+    def create_kernelvm_init(self, **kwargs):
+        """Create QEMU init script.
+
+        :param kwargs: Key-value pairs to replace content of init startup file.
+        :type kwargs: dict
         """
-        self._qemu_opt['serial_port'] = port
-
-    def qemu_set_mem_size(self, mem_size):
-        """Set virtual RAM size.
-
-        :param mem_size: RAM size in Mega Bytes.
-        :type mem_size: int
+        template = '{res}/init.sh'.format(res=Constants.RESOURCES_TPL_VM)
+        init = self._temp.get('ini')
+        exec_cmd_no_error(self._node, 'rm -f {init}'.format(init=init),
+                          sudo=True)
+
+        with open(template, 'r') as src_file:
+            src = Template(src_file.read())
+            exec_cmd_no_error(self._node, "echo '{out}' | sudo tee {init}".
+                              format(out=src.safe_substitute(**kwargs),
+                                     init=init))
+            exec_cmd_no_error(self._node, "chmod +x {init}".
+                              format(init=init), sudo=True)
+
+    def configure_kernelvm_vnf(self, **kwargs):
+        """Create KernelVM VNF configurations.
+
+        :param kwargs: Key-value pairs for templating configs.
+        :type kwargs: dict
         """
-        self._qemu_opt['mem_size'] = int(mem_size)
+        if 'vpp' in self._opt.get('vnf'):
+            self.create_kernelvm_config_vpp(**kwargs)
+        elif 'testpmd_io' in self._opt.get('vnf'):
+            self.create_kernelvm_config_testpmd_io(**kwargs)
+        elif 'testpmd_mac' in self._opt.get('vnf'):
+            self.create_kernelvm_config_testpmd_mac(**kwargs)
+        else:
+            raise RuntimeError('QEMU: Unsupported VNF!')
+        self.create_kernelvm_init(vnf_bin=self._opt.get('vnf_bin'))
 
-    def qemu_set_huge_mnt(self, huge_mnt):
-        """Set hugefile mount point.
+    def get_qemu_pids(self):
+        """Get QEMU CPU pids.
 
-        :param huge_mnt: System hugefile mount point.
-        :type huge_mnt: int
+        :returns: List of QEMU CPU pids.
+        :rtype: list of str
         """
-        self._qemu_opt['huge_mnt'] = huge_mnt
-
-    def qemu_set_huge_allocate(self):
-        """Set flag to allocate more huge pages if needed."""
-        self._qemu_opt['huge_allocate'] = True
-
-    def qemu_set_disk_image(self, disk_image):
-        """Set disk image.
+        command = ("grep -rwl 'CPU' /proc/$(sudo cat {pidfile})/task/*/comm ".
+                   format(pidfile=self._temp.get('pidfile')))
+        command += (r"| xargs dirname | sed -e 's/\/.*\///g' | uniq")
 
-        :param disk_image: Path of the disk image.
-        :type disk_image: str
-        """
-        self._qemu_opt['disk_image'] = disk_image
+        stdout, _ = exec_cmd_no_error(self._node, command)
+        return stdout.splitlines()
 
     def qemu_set_affinity(self, *host_cpus):
         """Set qemu affinity by getting thread PIDs via QMP and taskset to list
-        of CPU cores.
+        of CPU cores. Function tries to execute 3 times to avoid race condition
+        in getting thread PIDs.
 
         :param host_cpus: List of CPU cores.
         :type host_cpus: list
         """
-        qemu_cpus = self._qemu_qmp_exec('query-cpus')['return']
-
-        if len(qemu_cpus) != len(host_cpus):
-            logger.debug('Host CPU count {0}, Qemu Thread count {1}'.format(
-                len(host_cpus), len(qemu_cpus)))
-            raise ValueError('Host CPU count must match Qemu Thread count')
-
-        for qemu_cpu, host_cpu in zip(qemu_cpus, host_cpus):
-            cmd = 'taskset -pc {0} {1}'.format(host_cpu, qemu_cpu['thread_id'])
-            (ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd)
-            if int(ret_code) != 0:
-                logger.debug('Set affinity failed {0}'.format(stderr))
-                raise RuntimeError('Set affinity failed on {0}'.format(
-                    self._node['host']))
+        for _ in range(3):
+            try:
+                qemu_cpus = self.get_qemu_pids()
+
+                if len(qemu_cpus) != len(host_cpus):
+                    sleep(1)
+                    continue
+                for qemu_cpu, host_cpu in zip(qemu_cpus, host_cpus):
+                    command = ('taskset -pc {host_cpu} {thread}'.
+                               format(host_cpu=host_cpu, thread=qemu_cpu))
+                    message = ('QEMU: Set affinity failed on {host}!'.
+                               format(host=self._node['host']))
+                    exec_cmd_no_error(self._node, command, sudo=True,
+                                      message=message)
+                break
+            except (RuntimeError, ValueError):
+                self.qemu_kill_all()
+                raise
+        else:
+            self.qemu_kill_all()
+            raise RuntimeError('Failed to set Qemu threads affinity!')
 
     def qemu_set_scheduler_policy(self):
         """Set scheduler policy to SCHED_RR with priority 1 for all Qemu CPU
         processes.
 
-       :raises RuntimeError: Set scheduler policy failed.
-        """
-        qemu_cpus = self._qemu_qmp_exec('query-cpus')['return']
-
-        for qemu_cpu in qemu_cpus:
-            cmd = 'chrt -r -p 1 {0}'.format(qemu_cpu['thread_id'])
-            (ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd)
-            if int(ret_code) != 0:
-                logger.debug('Set SCHED_RR failed {0}'.format(stderr))
-                raise RuntimeError('Set SCHED_RR failed on {0}'.format(
-                    self._node['host']))
-
-    def qemu_set_node(self, node):
-        """Set node to run QEMU on.
-
-        :param node: Node to run QEMU on.
-        :type node: dict
+        :raises RuntimeError: Set scheduler policy failed.
         """
-        self._node = node
-        self._ssh = SSH()
-        self._ssh.connect(node)
-        self._vm_info['host'] = node['host']
+        try:
+            qemu_cpus = self.get_qemu_pids()
+
+            for qemu_cpu in qemu_cpus:
+                command = ('chrt -r -p 1 {thread}'.
+                           format(thread=qemu_cpu))
+                message = ('QEMU: Set SCHED_RR failed on {host}'.
+                           format(host=self._node['host']))
+                exec_cmd_no_error(self._node, command, sudo=True,
+                                  message=message)
+        except (RuntimeError, ValueError):
+            self.qemu_kill_all()
+            raise
 
-    def qemu_add_vhost_user_if(self, socket, server=True, mac=None):
+    def qemu_add_vhost_user_if(self, socket, server=True, jumbo_frames=False,
+                               queue_size=None, queues=1):
         """Add Vhost-user interface.
 
         :param socket: Path of the unix socket.
         :param server: If True the socket shall be a listening socket.
-        :param mac: Vhost-user interface MAC address (optional, otherwise is
-            used auto-generated MAC 52:54:00:00:xx:yy).
+        :param jumbo_frames: Set True if jumbo frames are used in the test.
+        :param queue_size: Vring queue size.
+        :param queues: Number of queues.
         :type socket: str
         :type server: bool
-        :type mac: str
+        :type jumbo_frames: bool
+        :type queue_size: int
+        :type queues: int
         """
         self._vhost_id += 1
-        # Create unix socket character device.
-        chardev = ' -chardev socket,id=char{0},path={1}'.format(self._vhost_id,
-                                                                socket)
-        if server is True:
-            chardev += ',server'
-        self._qemu_opt['options'] += chardev
-        # Create Vhost-user network backend.
-        netdev = ' -netdev vhost-user,id=vhost{0},chardev=char{0},'\
-            'queues={1}'.format(self._vhost_id, self._qemu_opt['queues'])
-        self._qemu_opt['options'] += netdev
-        # If MAC is not specified use auto-generated MAC address based on
-        # template 52:54:00:00:<qemu_id>:<vhost_id>, e.g. vhost1 MAC of QEMU
-        #  with ID 1 is 52:54:00:00:01:01
-        if mac is None:
-            mac = '52:54:00:00:{0:02x}:{1:02x}'.\
-                format(self._qemu_id, self._vhost_id)
-        extend_options = 'mq=on,csum=off,gso=off,guest_tso4=off,'\
-            'guest_tso6=off,guest_ecn=off,mrg_rxbuf=off'
-        # Create Virtio network device.
-        device = ' -device virtio-net-pci,netdev=vhost{0},mac={1},{2}'.format(
-            self._vhost_id, mac, extend_options)
-        self._qemu_opt['options'] += device
-        # Add interface MAC and socket to the node dict
+        self._params.add('chardev',
+                         'socket,id=char{vhost},path={socket}{server}'.
+                         format(vhost=self._vhost_id, socket=socket,
+                                server=',server' if server is True else ''))
+        self._params.add('netdev',
+                         'vhost-user,id=vhost{vhost},'
+                         'chardev=char{vhost},queues={queues}'.
+                         format(vhost=self._vhost_id, queues=queues))
+        mac = ('52:54:00:00:{qemu:02x}:{vhost:02x}'.
+               format(qemu=self._opt.get('qemu_id'), vhost=self._vhost_id))
+        queue_size = ('rx_queue_size={queue_size},tx_queue_size={queue_size}'.
+                      format(queue_size=queue_size)) if queue_size else ''
+        mbuf = 'on,host_mtu=9200'
+        self._params.add('device',
+                         'virtio-net-pci,netdev=vhost{vhost},'
+                         'mac={mac},bus=pci.0,addr={addr}.0,mq=on,'
+                         'vectors={vectors},csum=off,gso=off,'
+                         'guest_tso4=off,guest_tso6=off,guest_ecn=off,'
+                         'mrg_rxbuf={mbuf},{queue_size}'.
+                         format(addr=self._vhost_id+5,
+                                vhost=self._vhost_id, mac=mac,
+                                mbuf=mbuf if jumbo_frames else 'off',
+                                queue_size=queue_size,
+                                vectors=(2 * queues + 2)))
+
+        # Add interface MAC and socket to the node dict.
         if_data = {'mac_address': mac, 'socket': socket}
-        if_name = 'vhost{}'.format(self._vhost_id)
+        if_name = 'vhost{vhost}'.format(vhost=self._vhost_id)
         self._vm_info['interfaces'][if_name] = if_data
-        # Add socket to the socket list
-        self._socks.append(socket)
+        # Add socket to temporary file list.
+        self._temp[if_name] = socket
 
     def _qemu_qmp_exec(self, cmd):
         """Execute QMP command.
@@ -234,44 +471,37 @@ class QemuUtils(object):
 
         :param cmd: QMP command to execute.
         :type cmd: str
-        :return: Command output in python representation of JSON format. The
+        :returns: Command output in python representation of JSON format. The
             { "return": {} } response is QMP's success response. An error
             response will contain the "error" keyword instead of "return".
         """
         # To enter command mode, the qmp_capabilities command must be issued.
-        qmp_cmd = 'echo "{ \\"execute\\": \\"qmp_capabilities\\" }' \
-                  '{ \\"execute\\": \\"' + cmd + \
-                  '\\" }" | sudo -S socat - UNIX-CONNECT:' + self._qmp_sock
-
-        (ret_code, stdout, stderr) = self._ssh.exec_command(qmp_cmd)
-        if int(ret_code) != 0:
-            logger.debug('QMP execute failed {0}'.format(stderr))
-            raise RuntimeError('QMP execute "{0}"'
-                               ' failed on {1}'.format(cmd, self._node['host']))
-        logger.trace(stdout)
+        command = ('echo "{{ \\"execute\\": \\"qmp_capabilities\\" }}'
+                   '{{ \\"execute\\": \\"{cmd}\\" }}" | '
+                   'sudo -S socat - UNIX-CONNECT:{qmp}'.
+                   format(cmd=cmd, qmp=self._temp.get('qmp')))
+        message = ('QMP execute "{cmd}" failed on {host}'.
+                   format(cmd=cmd, host=self._node['host']))
+        stdout, _ = exec_cmd_no_error(self._node, command, sudo=False,
+                                      message=message)
+
         # Skip capabilities negotiation messages.
         out_list = stdout.splitlines()
         if len(out_list) < 3:
-            raise RuntimeError('Invalid QMP output on {0}'.format(
-                self._node['host']))
+            raise RuntimeError('Invalid QMP output on {host}'.
+                               format(host=self._node['host']))
         return json.loads(out_list[2])
 
     def _qemu_qga_flush(self):
-        """Flush the QGA parser state
-        """
-        qga_cmd = '(printf "\xFF"; sleep 1) | sudo -S socat - UNIX-CONNECT:' + \
-                  self._qga_sock
-        #TODO: probably need something else
-        (ret_code, stdout, stderr) = self._ssh.exec_command(qga_cmd)
-        if int(ret_code) != 0:
-            logger.debug('QGA execute failed {0}'.format(stderr))
-            raise RuntimeError('QGA execute "{0}" '
-                               'failed on {1}'.format(qga_cmd,
-                                                      self._node['host']))
-        logger.trace(stdout)
-        if not stdout:
-            return {}
-        return json.loads(stdout.split('\n', 1)[0])
+        """Flush the QGA parser state."""
+        command = ('(printf "\xFF"; sleep 1) | '
+                   'sudo -S socat - UNIX-CONNECT:{qga}'.
+                   format(qga=self._temp.get('qga')))
+        message = ('QGA flush failed on {host}'.format(host=self._node['host']))
+        stdout, _ = exec_cmd_no_error(self._node, command, sudo=False,
+                                      message=message)
+
+        return json.loads(stdout.split('\n', 1)[0]) if stdout else dict()
 
     def _qemu_qga_exec(self, cmd):
         """Execute QGA command.
@@ -281,351 +511,188 @@ class QemuUtils(object):
         :param cmd: QGA command to execute.
         :type cmd: str
         """
-        qga_cmd = '(echo "{ \\"execute\\": \\"' + \
-                  cmd + \
-                  '\\" }"; sleep 1) | sudo -S socat - UNIX-CONNECT:' + \
-                  self._qga_sock
-        (ret_code, stdout, stderr) = self._ssh.exec_command(qga_cmd)
-        if int(ret_code) != 0:
-            logger.debug('QGA execute failed {0}'.format(stderr))
-            raise RuntimeError('QGA execute "{0}"'
-                               ' failed on {1}'.format(cmd, self._node['host']))
-        logger.trace(stdout)
-        if not stdout:
-            return {}
-        return json.loads(stdout.split('\n', 1)[0])
-
-    def _wait_until_vm_boot(self, timeout=60):
-        """Wait until QEMU VM is booted.
-
-        Ping QEMU guest agent each 5s until VM booted or timeout.
-
-        :param timeout: Waiting timeout in seconds (optional, default 60s).
-        :type timeout: int
+        command = ('(echo "{{ \\"execute\\": \\"{cmd}\\" }}"; sleep 1) | '
+                   'sudo -S socat - UNIX-CONNECT:{qga}'.
+                   format(cmd=cmd, qga=self._temp.get('qga')))
+        message = ('QGA execute "{cmd}" failed on {host}'.
+                   format(cmd=cmd, host=self._node['host']))
+        stdout, _ = exec_cmd_no_error(self._node, command, sudo=False,
+                                      message=message)
+
+        return json.loads(stdout.split('\n', 1)[0]) if stdout else dict()
+
+    def _wait_until_vm_boot(self):
+        """Wait until QEMU with NestedVM is booted."""
+        if self._opt.get('vm_type') == 'nestedvm':
+            self._wait_until_nestedvm_boot()
+            self._update_vm_interfaces()
+        elif self._opt.get('vm_type') == 'kernelvm':
+            self._wait_until_kernelvm_boot()
+        else:
+            raise RuntimeError('QEMU: Unsupported VM type!')
+
+    def _wait_until_nestedvm_boot(self, retries=12):
+        """Wait until QEMU with NestedVM is booted.
+
+        First try to flush qga until there is output.
+        Then ping QEMU guest agent each 5s until VM booted or timeout.
+
+        :param retries: Number of retries with 5s between trials.
+        :type retries: int
         """
-        start = time()
-        while True:
-            if time() - start > timeout:
-                raise RuntimeError('timeout, VM {0} not booted on {1}'.format(
-                    self._qemu_opt['disk_image'], self._node['host']))
+        for _ in range(retries):
             out = None
             try:
-                self._qemu_qga_flush()
-                out = self._qemu_qga_exec('guest-ping')
+                out = self._qemu_qga_flush()
             except ValueError:
-                logger.trace('QGA guest-ping unexpected output {}'.format(out))
+                logger.trace('QGA qga flush unexpected output {out}'.
+                             format(out=out))
             # Empty output - VM not booted yet
             if not out:
                 sleep(5)
-            # Non-error return - VM booted
+            else:
+                break
+        else:
+            raise RuntimeError('QEMU: Timeout, VM not booted on {host}!'.
+                               format(host=self._node['host']))
+        for _ in range(retries):
+            out = None
+            try:
+                out = self._qemu_qga_exec('guest-ping')
+            except ValueError:
+                logger.trace('QGA guest-ping unexpected output {out}'.
+                             format(out=out))
+            # Empty output - VM not booted yet.
+            if not out:
+                sleep(5)
+            # Non-error return - VM booted.
             elif out.get('return') is not None:
                 break
-            # Skip error and wait
+            # Skip error and wait.
             elif out.get('error') is not None:
                 sleep(5)
             else:
                 # If there is an unexpected output from QGA guest-info, try
                 # again until timeout.
-                logger.trace('QGA guest-ping unexpected output {}'.format(out))
+                logger.trace('QGA guest-ping unexpected output {out}'.
+                             format(out=out))
+        else:
+            raise RuntimeError('QEMU: Timeout, VM not booted on {host}!'.
+                               format(host=self._node['host']))
 
-        logger.trace('VM {0} booted on {1}'.format(self._qemu_opt['disk_image'],
-                                                   self._node['host']))
+    def _wait_until_kernelvm_boot(self, retries=60):
+        """Wait until QEMU KernelVM is booted.
+
+        :param retries: Number of retries.
+        :type retries: int
+        """
+        vpp_ver = VPPUtil.vpp_show_version(self._node)
+
+        for _ in range(retries):
+            command = ('tail -1 {log}'.format(log=self._temp.get('log')))
+            stdout = None
+            try:
+                stdout, _ = exec_cmd_no_error(self._node, command, sudo=True)
+                sleep(1)
+            except RuntimeError:
+                pass
+            if vpp_ver in stdout or 'Press enter to exit' in stdout:
+                break
+            if 'reboot: Power down' in stdout:
+                raise RuntimeError('QEMU: NF failed to run on {host}!'.
+                                   format(host=self._node['host']))
+        else:
+            raise RuntimeError('QEMU: Timeout, VM not booted on {host}!'.
+                               format(host=self._node['host']))
 
     def _update_vm_interfaces(self):
         """Update interface names in VM node dict."""
         # Send guest-network-get-interfaces command via QGA, output example:
         # {"return": [{"name": "eth0", "hardware-address": "52:54:00:00:04:01"},
-        # {"name": "eth1", "hardware-address": "52:54:00:00:04:02"}]}
+        # {"name": "eth1", "hardware-address": "52:54:00:00:04:02"}]}.
         out = self._qemu_qga_exec('guest-network-get-interfaces')
         interfaces = out.get('return')
         mac_name = {}
         if not interfaces:
-            raise RuntimeError('Get VM {0} interface list failed on {1}'.format(
-                self._qemu_opt['disk_image'], self._node['host']))
-        # Create MAC-name dict
+            raise RuntimeError('Get VM interface list failed on {host}'.
+                               format(host=self._node['host']))
+        # Create MAC-name dict.
         for interface in interfaces:
             if 'hardware-address' not in interface:
                 continue
             mac_name[interface['hardware-address']] = interface['name']
-        # Match interface by MAC and save interface name
+        # Match interface by MAC and save interface name.
         for interface in self._vm_info['interfaces'].values():
             mac = interface.get('mac_address')
             if_name = mac_name.get(mac)
             if if_name is None:
-                logger.trace('Interface name for MAC {} not found'.format(mac))
+                logger.trace('Interface name for MAC {mac} not found'.
+                             format(mac=mac))
             else:
                 interface['name'] = if_name
 
-    def _huge_page_check(self, allocate=False):
-        """Huge page check."""
-        huge_mnt = self._qemu_opt.get('huge_mnt')
-        mem_size = self._qemu_opt.get('mem_size')
-
-        # Get huge pages information
-        huge_size = self._get_huge_page_size()
-        huge_free = self._get_huge_page_free(huge_size)
-        huge_total = self._get_huge_page_total(huge_size)
-
-        # Check if memory reqested by qemu is available on host
-        if (mem_size * 1024) > (huge_free * huge_size):
-            # If we want to allocate hugepage dynamically
-            if allocate:
-                mem_needed = abs((huge_free * huge_size) - (mem_size * 1024))
-                huge_to_allocate = ((mem_needed / huge_size) * 2) + huge_total
-                max_map_count = huge_to_allocate*4
-                # Increase maximum number of memory map areas a process may have
-                cmd = 'echo "{0}" | sudo tee /proc/sys/vm/max_map_count'.format(
-                    max_map_count)
-                (ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd)
-                # Increase hugepage count
-                cmd = 'echo "{0}" | sudo tee /proc/sys/vm/nr_hugepages'.format(
-                    huge_to_allocate)
-                (ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd)
-                if int(ret_code) != 0:
-                    logger.debug('Mount huge pages failed {0}'.format(stderr))
-                    raise RuntimeError('Mount huge pages failed on {0}'.format(
-                        self._node['host']))
-            # If we do not want to allocate dynamicaly end with error
-            else:
-                raise RuntimeError(
-                    'Not enough free huge pages: {0}, '
-                    '{1} MB'.format(huge_free, huge_free * huge_size)
-                )
-        # Check if huge pages mount point exist
-        has_huge_mnt = False
-        (_, output, _) = self._ssh.exec_command('cat /proc/mounts')
-        for line in output.splitlines():
-            # Try to find something like:
-            # none /mnt/huge hugetlbfs rw,relatime,pagesize=2048k 0 0
-            mount = line.split()
-            if mount[2] == 'hugetlbfs' and mount[1] == huge_mnt:
-                has_huge_mnt = True
-                break
-        # If huge page mount point not exist create one
-        if not has_huge_mnt:
-            cmd = 'mkdir -p {0}'.format(huge_mnt)
-            (ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd)
-            if int(ret_code) != 0:
-                logger.debug('Create mount dir failed: {0}'.format(stderr))
-                raise RuntimeError('Create mount dir failed on {0}'.format(
-                    self._node['host']))
-            cmd = 'mount -t hugetlbfs -o pagesize=2048k none {0}'.format(
-                huge_mnt)
-            (ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd)
-            if int(ret_code) != 0:
-                logger.debug('Mount huge pages failed {0}'.format(stderr))
-                raise RuntimeError('Mount huge pages failed on {0}'.format(
-                    self._node['host']))
-
-    def _get_huge_page_size(self):
-        """Get default size of huge pages in system.
-
-        :returns: Default size of free huge pages in system.
-        :rtype: int
-        :raises: RuntimeError if reading failed for three times.
-        """
-        # TODO: remove to dedicated library
-        cmd_huge_size = "grep Hugepagesize /proc/meminfo | awk '{ print $2 }'"
-        for _ in range(3):
-            (ret, out, _) = self._ssh.exec_command_sudo(cmd_huge_size)
-            if ret == 0:
-                try:
-                    huge_size = int(out)
-                except ValueError:
-                    logger.trace('Reading huge page size information failed')
-                else:
-                    break
-        else:
-            raise RuntimeError('Getting huge page size information failed.')
-        return huge_size
-
-    def _get_huge_page_free(self, huge_size):
-        """Get total number of huge pages in system.
-
-        :param huge_size: Size of hugepages.
-        :type huge_size: int
-        :returns: Number of free huge pages in system.
-        :rtype: int
-        :raises: RuntimeError if reading failed for three times.
-        """
-        # TODO: add numa aware option
-        # TODO: remove to dedicated library
-        cmd_huge_free = 'cat /sys/kernel/mm/hugepages/hugepages-{0}kB/'\
-            'free_hugepages'.format(huge_size)
-        for _ in range(3):
-            (ret, out, _) = self._ssh.exec_command_sudo(cmd_huge_free)
-            if ret == 0:
-                try:
-                    huge_free = int(out)
-                except ValueError:
-                    logger.trace('Reading free huge pages information failed')
-                else:
-                    break
-        else:
-            raise RuntimeError('Getting free huge pages information failed.')
-        return huge_free
-
-    def _get_huge_page_total(self, huge_size):
-        """Get total number of huge pages in system.
-
-        :param huge_size: Size of hugepages.
-        :type huge_size: int
-        :returns: Total number of huge pages in system.
-        :rtype: int
-        :raises: RuntimeError if reading failed for three times.
-        """
-        # TODO: add numa aware option
-        # TODO: remove to dedicated library
-        cmd_huge_total = 'cat /sys/kernel/mm/hugepages/hugepages-{0}kB/'\
-            'nr_hugepages'.format(huge_size)
-        for _ in range(3):
-            (ret, out, _) = self._ssh.exec_command_sudo(cmd_huge_total)
-            if ret == 0:
-                try:
-                    huge_total = int(out)
-                except ValueError:
-                    logger.trace('Reading total huge pages information failed')
-                else:
-                    break
-        else:
-            raise RuntimeError('Getting total huge pages information failed.')
-        return huge_total
-
     def qemu_start(self):
         """Start QEMU and wait until VM boot.
 
-        :return: VM node info.
+        :returns: VM node info.
         :rtype: dict
-        .. note:: First set at least node to run QEMU on.
-        .. warning:: Starts only one VM on the node.
         """
-        # SSH forwarding
-        ssh_fwd = '-net user,hostfwd=tcp::{0}-:22'.format(
-            self._qemu_opt.get('ssh_fwd_port'))
-        # Memory and huge pages
-        mem = '-object memory-backend-file,id=mem,size={0}M,mem-path={1},' \
-            'share=on -m {0} -numa node,memdev=mem'.format(
-                self._qemu_opt.get('mem_size'), self._qemu_opt.get('huge_mnt'))
-
-        # By default check only if hugepages are available.
-        # If 'huge_allocate' is set to true try to allocate as well.
-        self._huge_page_check(allocate=self._qemu_opt.get('huge_allocate'))
-
-        # Disk option
-        drive = '-drive file={0},format=raw,cache=none,if=virtio'.format(
-            self._qemu_opt.get('disk_image'))
-        # Setup QMP via unix socket
-        qmp = '-qmp unix:{0},server,nowait'.format(self._qmp_sock)
-        # Setup serial console
-        serial = '-chardev socket,host=127.0.0.1,port={0},id=gnc0,server,' \
-            'nowait -device isa-serial,chardev=gnc0'.format(
-                self._qemu_opt.get('serial_port'))
-        # Setup QGA via chardev (unix socket) and isa-serial channel
-        qga = '-chardev socket,path={0},server,nowait,id=qga0 ' \
-            '-device isa-serial,chardev=qga0'.format(self._qga_sock)
-        # Graphic setup
-        graphic = '-monitor none -display none -vga none'
-
-        # Run QEMU
-        cmd = '{0} {1} {2} {3} {4} {5} {6} {7} {8} {9}'.format(
-            self._qemu_bin, self._qemu_opt.get('smp'), mem, ssh_fwd,
-            self._qemu_opt.get('options'),
-            drive, qmp, serial, qga, graphic)
-        (ret_code, _, stderr) = self._ssh.exec_command_sudo(cmd, timeout=300)
-        if int(ret_code) != 0:
-            logger.debug('QEMU start failed {0}'.format(stderr))
-            raise RuntimeError('QEMU start failed on {0}'.format(
-                self._node['host']))
-        logger.trace('QEMU running')
-        # Wait until VM boot
+        command = ('{bin_path}/qemu-system-{arch} {params}'.
+                   format(bin_path=self._opt.get('bin_path'),
+                          arch=Topology.get_node_arch(self._node),
+                          params=self._params))
+        message = ('QEMU: Start failed on {host}!'.
+                   format(host=self._node['host']))
         try:
+            DUTSetup.check_huge_page(self._node, '/dev/hugepages',
+                                     self._opt.get('mem'))
+
+            exec_cmd_no_error(self._node, command, timeout=300, sudo=True,
+                              message=message)
             self._wait_until_vm_boot()
-        except (RuntimeError, SSHTimeout):
-            self.qemu_kill()
-            self.qemu_clear_socks()
+        except RuntimeError:
+            self.qemu_kill_all()
             raise
-        # Update interface names in VM node dict
-        self._update_vm_interfaces()
-        # Return VM node dict
         return self._vm_info
 
-    def qemu_quit(self):
-        """Quit the QEMU emulator."""
-        out = self._qemu_qmp_exec('quit')
-        err = out.get('error')
-        if err is not None:
-            raise RuntimeError('QEMU quit failed on {0}, error: {1}'.format(
-                self._node['host'], json.dumps(err)))
-
-    def qemu_system_powerdown(self):
-        """Power down the system (if supported)."""
-        out = self._qemu_qmp_exec('system_powerdown')
-        err = out.get('error')
-        if err is not None:
-            raise RuntimeError(
-                'QEMU system powerdown failed on {0}, '
-                'error: {1}'.format(self._node['host'], json.dumps(err))
-            )
-
-    def qemu_system_reset(self):
-        """Reset the system."""
-        out = self._qemu_qmp_exec('system_reset')
-        err = out.get('error')
-        if err is not None:
-            raise RuntimeError(
-                'QEMU system reset failed on {0}, '
-                'error: {1}'.format(self._node['host'], json.dumps(err)))
-
     def qemu_kill(self):
         """Kill qemu process."""
-        # TODO: add PID storage so that we can kill specific PID
-        # Note: in QEMU start phase there are 3 QEMU processes because we
-        # daemonize QEMU
-        self._ssh.exec_command_sudo('pkill -SIGKILL qemu')
-
-    def qemu_clear_socks(self):
-        """Remove all sockets created by QEMU."""
-        # If serial console port still open kill process
-        cmd = 'fuser -k {}/tcp'.format(self._qemu_opt.get('serial_port'))
-        self._ssh.exec_command_sudo(cmd)
-        # Delete all created sockets
-        for sock in self._socks:
-            cmd = 'rm -f {}'.format(sock)
-            self._ssh.exec_command_sudo(cmd)
-
-    def qemu_system_status(self):
-        """Return current VM status.
-
-        VM should be in following status:
-
-            - debug: QEMU running on a debugger
-            - finish-migrate: paused to finish the migration process
-            - inmigrate: waiting for an incoming migration
-            - internal-error: internal error has occurred
-            - io-error: the last IOP has failed
-            - paused: paused
-            - postmigrate: paused following a successful migrate
-            - prelaunch: QEMU was started with -S and guest has not started
-            - restore-vm: paused to restore VM state
-            - running: actively running
-            - save-vm: paused to save the VM state
-            - shutdown: shut down (and -no-shutdown is in use)
-            - suspended: suspended (ACPI S3)
-            - watchdog: watchdog action has been triggered
-            - guest-panicked: panicked as a result of guest OS panic
-
-        :return: VM status.
-        :rtype: str
+        exec_cmd(self._node, 'chmod +r {pidfile}'.
+                 format(pidfile=self._temp.get('pidfile')), sudo=True)
+        exec_cmd(self._node, 'kill -SIGKILL $(cat {pidfile})'.
+                 format(pidfile=self._temp.get('pidfile')), sudo=True)
+
+        for value in self._temp.values():
+            exec_cmd(self._node, 'cat {value}'.format(value=value), sudo=True)
+            exec_cmd(self._node, 'rm -f {value}'.format(value=value), sudo=True)
+
+    def qemu_kill_all(self):
+        """Kill all qemu processes on DUT node if specified."""
+        exec_cmd(self._node, 'pkill -SIGKILL qemu', sudo=True)
+
+        for value in self._temp.values():
+            exec_cmd(self._node, 'cat {value}'.format(value=value), sudo=True)
+            exec_cmd(self._node, 'rm -f {value}'.format(value=value), sudo=True)
+
+    def qemu_version(self, version=None):
+        """Return Qemu version or compare if version is higher than parameter.
+
+        :param version: Version to compare.
+        :type version: str
+        :returns: Qemu version or Boolean if version is higher than parameter.
+        :rtype: str or bool
         """
-        out = self._qemu_qmp_exec('query-status')
-        ret = out.get('return')
-        if ret is not None:
-            return ret.get('status')
-        else:
-            err = out.get('error')
-            raise RuntimeError(
-                'QEMU query-status failed on {0}, '
-                'error: {1}'.format(self._node['host'], json.dumps(err)))
+        command = ('{bin_path}/qemu-system-{arch} --version'.
+                   format(bin_path=self._opt.get('bin_path'),
+                          arch=Topology.get_node_arch(self._node)))
+        try:
+            stdout, _ = exec_cmd_no_error(self._node, command, sudo=True)
+            ver = match(r'QEMU emulator version ([\d.]*)', stdout).group(1)
+            return StrictVersion(ver) > StrictVersion(version) \
+                if version else ver
+        except RuntimeError:
+            self.qemu_kill_all()
+            raise
 
     @staticmethod
     def build_qemu(node, force_install=False, apply_patch=False):
@@ -637,22 +704,25 @@ class QemuUtils(object):
         :type node: dict
         :type force_install: bool
         :type apply_patch: bool
-        :raises: RuntimeError if building QEMU failed.
+        :raises RuntimeError: If building QEMU failed.
         """
-        ssh = SSH()
-        ssh.connect(node)
-
-        directory = ' --directory={0}'.format(Constants.QEMU_INSTALL_DIR)
-        version = ' --version={0}'.format(Constants.QEMU_INSTALL_VERSION)
+        directory = (' --directory={install_dir}{patch}'.
+                     format(install_dir=Constants.QEMU_INSTALL_DIR,
+                            patch='-patch' if apply_patch else '-base'))
+        version = (' --version={install_version}'.
+                   format(install_version=Constants.QEMU_INSTALL_VERSION))
         force = ' --force' if force_install else ''
         patch = ' --patch' if apply_patch else ''
-
-        (ret_code, stdout, stderr) = \
-            ssh.exec_command(
-                "sudo -E sh -c '{0}/{1}/qemu_build.sh{2}{3}{4}{5}'"\
-                .format(Constants.REMOTE_FW_DIR, Constants.RESOURCES_LIB_SH,
-                        version, directory, force, patch), 1000)
-
-        if int(ret_code) != 0:
-            logger.debug('QEMU build failed {0}'.format(stdout + stderr))
-            raise RuntimeError('QEMU build failed on {0}'.format(node['host']))
+        target_list = (' --target-list={arch}-softmmu'.
+                       format(arch=Topology.get_node_arch(node)))
+
+        command = ("sudo -E sh -c "
+                   "'{fw_dir}/{lib_sh}/qemu_build.sh{version}{directory}"
+                   "{force}{patch}{target_list}'".
+                   format(fw_dir=Constants.REMOTE_FW_DIR,
+                          lib_sh=Constants.RESOURCES_LIB_SH,
+                          version=version, directory=directory, force=force,
+                          patch=patch, target_list=target_list))
+        message = ('QEMU: Build failed on {host}!'.format(host=node['host']))
+        exec_cmd_no_error(node, command, sudo=False, message=message,
+                          timeout=1000)