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virt-manager/virtinst/guest.py

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#
# Common code for all guests
#
# Copyright 2006-2009, 2013, 2014, 2015 Red Hat, Inc.
# Jeremy Katz <katzj@redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA.
import logging
import urlgrabber.progress as progress
import libvirt
from virtcli import CLIConfig
from . import util
from . import support
from .osdict import OSDB
from .clock import Clock
from .cpu import CPU
from .device import VirtualDevice
from .deviceaudio import VirtualAudio
from .devicechar import VirtualChannelDevice, VirtualConsoleDevice
from .devicecontroller import VirtualController
from .devicegraphics import VirtualGraphics
from .deviceinput import VirtualInputDevice
from .deviceredirdev import VirtualRedirDevice
from .devicevideo import VirtualVideoDevice
from .distroinstaller import DistroInstaller
from .domainblkiotune import DomainBlkiotune
from .domainfeatures import DomainFeatures
from .domainmemorybacking import DomainMemorybacking
from .domainmemorytune import DomainMemorytune
from .domainnumatune import DomainNumatune
from .domainresource import DomainResource
from .domcapabilities import DomainCapabilities
from .idmap import IdMap
from .osxml import OSXML
from .pm import PM
from .seclabel import Seclabel
from .xmlbuilder import XMLBuilder, XMLProperty, XMLChildProperty
class Guest(XMLBuilder):
@staticmethod
def check_vm_collision(conn, name, do_remove):
"""
Remove the existing VM with the same name if requested, or error
if there is a collision.
"""
vm = None
try:
vm = conn.lookupByName(name)
except libvirt.libvirtError:
pass
if vm is None:
return
if not do_remove:
raise RuntimeError(_("Domain named %s already exists!") % name)
try:
logging.debug("Explicitly replacing guest '%s'", name)
if vm.ID() != -1:
logging.info("Destroying guest '%s'", name)
vm.destroy()
logging.info("Undefining guest '%s'", name)
vm.undefine()
except libvirt.libvirtError, e:
raise RuntimeError(_("Could not remove old vm '%s': %s") %
(str(e)))
@staticmethod
def validate_name(conn, name, check_collision, validate=True):
if validate:
util.validate_name(_("Guest"), name)
if not check_collision:
return
try:
conn.lookupByName(name)
except:
return
raise ValueError(_("Guest name '%s' is already in use.") % name)
_XML_ROOT_NAME = "domain"
_XML_PROP_ORDER = ["type", "name", "uuid", "title", "description",
"maxmemory", "memory", "blkiotune", "memtune", "memoryBacking",
"vcpus", "curvcpus", "numatune", "bootloader", "os", "idmap",
"features", "cpu", "clock", "on_poweroff", "on_reboot", "on_crash",
"resource", "pm", "emulator", "_devices", "seclabel"]
def __init__(self, *args, **kwargs):
XMLBuilder.__init__(self, *args, **kwargs)
self.autostart = False
self.replace = False
# Allow virt-manager to override the default graphics type
self.default_graphics_type = CLIConfig.default_graphics
self.skip_default_console = False
self.skip_default_channel = False
self.skip_default_sound = False
self.skip_default_usbredir = False
self.skip_default_graphics = False
self.x86_cpu_default = self.cpu.SPECIAL_MODE_HOST_MODEL_ONLY
self.__os_object = None
self._random_uuid = None
self._install_devices = []
self._defaults_are_set = False
# The libvirt virDomain object we 'Create'
self.domain = None
self.installer = DistroInstaller(self.conn)
######################
# Property accessors #
######################
def _validate_name(self, val):
if val == self.name:
return
self.validate_name(self.conn, val, check_collision=not self.replace)
name = XMLProperty("./name", validate_cb=_validate_name)
def _set_memory(self, val):
if val is None:
return None
if self.maxmemory is None or self.maxmemory < val:
self.maxmemory = val
return val
memory = XMLProperty("./currentMemory", is_int=True,
default_cb=lambda s: 1,
set_converter=_set_memory)
maxmemory = XMLProperty("./memory", is_int=True)
def _set_vcpus(self, val):
if val is None:
return None
# Don't force set curvcpus unless already specified
if self.curvcpus is not None and self.curvcpus > val:
self.curvcpus = val
return val
vcpus = XMLProperty("./vcpu", is_int=True,
set_converter=_set_vcpus,
default_cb=lambda s: 1)
curvcpus = XMLProperty("./vcpu/@current", is_int=True)
def _validate_cpuset(self, val):
DomainNumatune.validate_cpuset(self.conn, val)
cpuset = XMLProperty("./vcpu/@cpuset",
validate_cb=_validate_cpuset)
def _get_default_uuid(self):
if self._random_uuid is None:
self._random_uuid = util.generate_uuid(self.conn)
return self._random_uuid
uuid = XMLProperty("./uuid",
validate_cb=lambda s, v: util.validate_uuid(v),
default_cb=_get_default_uuid)
id = XMLProperty("./@id", is_int=True)
type = XMLProperty("./@type", default_cb=lambda s: "xen")
bootloader = XMLProperty("./bootloader")
description = XMLProperty("./description")
title = XMLProperty("./title")
emulator = XMLProperty("./devices/emulator")
on_poweroff = XMLProperty("./on_poweroff",
default_cb=lambda s: "destroy")
on_reboot = XMLProperty("./on_reboot", default_cb=lambda s: "restart")
on_crash = XMLProperty("./on_crash", default_cb=lambda s: "restart")
os = XMLChildProperty(OSXML, is_single=True)
features = XMLChildProperty(DomainFeatures, is_single=True)
clock = XMLChildProperty(Clock, is_single=True)
seclabel = XMLChildProperty(Seclabel, is_single=True)
cpu = XMLChildProperty(CPU, is_single=True)
numatune = XMLChildProperty(DomainNumatune, is_single=True)
pm = XMLChildProperty(PM, is_single=True)
blkiotune = XMLChildProperty(DomainBlkiotune, is_single=True)
memtune = XMLChildProperty(DomainMemorytune, is_single=True)
memoryBacking = XMLChildProperty(DomainMemorybacking, is_single=True)
idmap = XMLChildProperty(IdMap, is_single=True)
resource = XMLChildProperty(DomainResource, is_single=True)
###############################
# Distro detection properties #
###############################
def _set_os_object(self, variant):
obj = OSDB.lookup_os(variant)
if not obj:
obj = OSDB.lookup_os("generic")
self.__os_object = obj
def _get_os_object(self):
if not self.__os_object:
self._set_os_object(None)
return self.__os_object
_os_object = property(_get_os_object)
def _get_os_variant(self):
return self._os_object.name
def _set_os_variant(self, val):
if val:
val = val.lower()
if OSDB.lookup_os(val) is None:
raise ValueError(
_("Distro '%s' does not exist in our dictionary") % val)
logging.debug("Setting Guest.os_variant to '%s'", val)
self._set_os_object(val)
os_variant = property(_get_os_variant, _set_os_variant)
########################################
# Device Add/Remove Public API methods #
########################################
def add_device(self, dev):
"""
Add the passed device to the guest's device list.
@param dev: VirtualDevice instance to attach to guest
"""
self._add_child(dev)
def remove_device(self, dev):
"""
Remove the passed device from the guest's device list
@param dev: VirtualDevice instance
"""
self._remove_child(dev)
def get_devices(self, devtype):
"""
Return a list of devices of type 'devtype' that will installed on
the guest.
@param devtype: Device type to search for (one of
VirtualDevice.virtual_device_types)
"""
newlist = []
for i in self._devices:
if devtype == "all" or i.virtual_device_type == devtype:
newlist.append(i)
return newlist
_devices = XMLChildProperty(
[VirtualDevice.virtual_device_classes[_n]
for _n in VirtualDevice.virtual_device_types],
relative_xpath="./devices")
def get_all_devices(self):
"""
Return a list of all devices being installed with the guest
"""
retlist = []
for devtype in VirtualDevice.virtual_device_types:
retlist.extend(self.get_devices(devtype))
return retlist
############################
# Install Helper functions #
############################
def _prepare_install(self, meter, dry=False):
for dev in self._install_devices:
self.remove_device(dev)
self._install_devices = []
ignore = dry
# Fetch install media, prepare installer devices
self.installer.prepare(self, meter)
# Initialize install device list
for dev in self.installer.install_devices:
self.add_device(dev)
self._install_devices.append(dev)
def _prepare_get_xml(self):
# We do a shallow copy of the OS block here, so that we can
# set the install time properties but not permanently overwrite
# any config the user explicitly requested.
data = (self.os, self.on_crash, self.on_reboot)
try:
self._propstore["os"] = self.os.copy()
except:
self._finish_get_xml(data)
raise
return data
def _finish_get_xml(self, data):
(self._propstore["os"],
self.on_crash,
self.on_reboot) = data
def _get_install_xml(self, *args, **kwargs):
data = self._prepare_get_xml()
try:
return self._do_get_install_xml(*args, **kwargs)
finally:
self._finish_get_xml(data)
def _do_get_install_xml(self, install=True, disk_boot=False):
"""
Return the full Guest xml configuration.
@param install: Whether we want the 'OS install' configuration or
the 'post-install' configuration. (Some installs,
like an import or livecd may not have an 'install'
config.)
@type install: C{bool}
@param disk_boot: Whether we should boot off the harddisk, regardless
of our position in the install process (this is
used for 2 stage installs, where the second stage
boots off the disk. You probably don't need to touch
this.)
@type disk_boot: C{bool}
"""
osblob_install = install and not disk_boot
if osblob_install and not self.installer.has_install_phase():
return None
self.installer.alter_bootconfig(self, osblob_install)
self._set_transient_device_defaults(install)
if install:
self.on_reboot = "destroy"
self.on_crash = "destroy"
self._set_osxml_defaults()
# Only set defaults on any install devices
for dev in self._install_devices:
dev.set_defaults(self)
self._set_disk_defaults(disks=self._install_devices)
self.bootloader = None
if (not install and
self.os.is_xenpv() and
not self.os.kernel):
self.bootloader = "/usr/bin/pygrub"
self.os.clear()
return self.get_xml_config()
##############
# Public API #
##############
def get_continue_inst(self):
"""
Return True if this guest requires a call to 'continue_install',
which means the OS requires a 2 stage install (windows)
"""
# If we are doing an 'import' or 'liveCD' install, there is
# no true install process, so continue install has no meaning
if not self.installer.has_install_phase():
return False
return self._os_object.is_windows()
def start_install(self, meter=None,
dry=False, return_xml=False, noboot=False):
"""
Begin the guest install (stage1).
@param return_xml: Don't create the guest, just return generated XML
"""
if self.domain is not None:
raise RuntimeError(_("Domain has already been started!"))
is_initial = True
self.set_install_defaults()
self._prepare_install(meter, dry)
try:
# Create devices if required (disk images, etc.)
if not dry:
for dev in self.get_all_devices():
dev.setup(meter)
start_xml, final_xml = self._build_xml(is_initial)
if return_xml:
return (start_xml, final_xml)
if dry:
return
# Remove existing VM if requested
self.check_vm_collision(self.conn, self.name,
do_remove=self.replace)
self.domain = self._create_guest(meter,
start_xml, final_xml, is_initial,
noboot)
# Set domain autostart flag if requested
self._flag_autostart()
return self.domain
finally:
self.installer.cleanup()
def continue_install(self, meter=None,
dry=False, return_xml=False):
"""
Continue with stage 2 of a guest install. Only required for
guests which have the 'continue' flag set (accessed via
get_continue_inst)
"""
is_initial = False
start_xml, final_xml = self._build_xml(is_initial)
if return_xml:
return (start_xml, final_xml)
if dry:
return
return self._create_guest(meter,
start_xml, final_xml, is_initial, False)
def _build_meter(self, meter, is_initial):
if is_initial:
meter_label = _("Creating domain...")
else:
meter_label = _("Starting domain...")
if meter is None:
meter = progress.BaseMeter()
meter.start(size=None, text=meter_label)
return meter
def _build_xml(self, is_initial):
log_label = is_initial and "install" or "continue"
disk_boot = not is_initial
start_xml = self._get_install_xml(install=True, disk_boot=disk_boot)
final_xml = self._get_install_xml(install=False)
logging.debug("Generated %s XML: %s",
log_label,
(start_xml and ("\n" + start_xml) or "None required"))
logging.debug("Generated boot XML: \n%s", final_xml)
return start_xml, final_xml
def _create_guest(self, meter,
start_xml, final_xml, is_initial, noboot):
"""
Actually do the XML logging, guest defining/creating
@param is_initial: If running initial guest creation, else we
are continuing the install
@param noboot: Don't boot guest if no install phase
"""
meter = self._build_meter(meter, is_initial)
doboot = not noboot or self.installer.has_install_phase()
if is_initial and doboot:
dom = self.conn.createLinux(start_xml or final_xml, 0)
else:
dom = self.conn.defineXML(start_xml or final_xml)
if doboot:
dom.create()
self.domain = dom
meter.end(0)
self.domain = self.conn.defineXML(final_xml)
if is_initial:
try:
logging.debug("XML fetched from libvirt object:\n%s",
dom.XMLDesc(0))
except Exception, e:
logging.debug("Error fetching XML from libvirt object: %s", e)
return self.domain
def _flag_autostart(self):
"""
Set the autostart flag for self.domain if the user requested it
"""
if not self.autostart:
return
try:
self.domain.setAutostart(True)
except libvirt.libvirtError, e:
if util.is_error_nosupport(e):
logging.warn("Could not set autostart flag: libvirt "
"connection does not support autostart.")
else:
raise e
###########################
# XML convenience helpers #
###########################
def set_uefi_default(self):
"""
Configure UEFI for the VM, but only if libvirt is advertising
a known UEFI binary path.
"""
domcaps = DomainCapabilities.build_from_guest(self)
if not domcaps.supports_uefi_xml():
raise RuntimeError(_("Libvirt version does not support UEFI."))
if not domcaps.arch_can_uefi():
raise RuntimeError(
_("Don't know how to setup UEFI for arch '%s'") %
self.os.arch)
path = domcaps.find_uefi_path_for_arch()
if not path:
raise RuntimeError(_("Did not find any UEFI binary path for "
"arch '%s'") % self.os.arch)
self.os.loader_ro = True
self.os.loader_type = "pflash"
self.os.loader = path
###################
# Device defaults #
###################
def set_install_defaults(self):
"""
Allow API users to set defaults ahead of time if they want it.
Used by vmmDomainVirtinst so the 'Customize before install' dialog
shows accurate values.
If the user doesn't explicitly call this, it will be called by
start_install()
"""
if self._defaults_are_set:
return
self._set_defaults()
self._defaults_are_set = True
def stable_defaults(self, *args, **kwargs):
return self.conn.stable_defaults(self.emulator, *args, **kwargs)
def add_default_input_device(self):
if self.os.is_container():
return
if not self.os.is_x86():
return
if self.get_devices("input"):
return
self.add_device(VirtualInputDevice(self.conn))
def add_default_sound_device(self):
if not self.os.is_hvm():
return
if not self.os.is_x86():
return
self.add_device(VirtualAudio(self.conn))
def add_default_console_device(self):
if self.skip_default_console:
return
if self.os.is_xenpv():
return
if self.get_devices("console") or self.get_devices("serial"):
return
dev = VirtualConsoleDevice(self.conn)
dev.type = dev.TYPE_PTY
if (self.os.is_x86() and
self._os_object.supports_virtioconsole() and
self.conn.check_support(
self.conn.SUPPORT_CONN_VIRTIO_CONSOLE)):
dev.target_type = "virtio"
self.add_device(dev)
def add_default_video_device(self):
if self.os.is_container():
return
if self.get_devices("video"):
return
if not self.get_devices("graphics"):
return
self.add_device(VirtualVideoDevice(self.conn))
def add_default_usb_controller(self):
if self.os.is_container():
return
if not self.os.is_x86():
return
if any([d.type == "usb" for d in self.get_devices("controller")]):
return
if not self.conn.check_support(
self.conn.SUPPORT_CONN_DEFAULT_USB2):
return
for dev in VirtualController.get_usb2_controllers(self.conn):
self.add_device(dev)
def add_default_channels(self):
if self.skip_default_channel:
return
if self.get_devices("channel"):
return
# Skip qemu-ga on ARM where virtio slots are currently limited
if (self.conn.is_qemu() and
not self.os.is_arm() and
self._os_object.supports_qemu_ga() and
self.conn.check_support(self.conn.SUPPORT_CONN_AUTOSOCKET)):
dev = VirtualChannelDevice(self.conn)
dev.type = "unix"
dev.target_type = "virtio"
dev.target_name = dev.CHANNEL_NAME_QEMUGA
self.add_device(dev)
def add_default_graphics(self):
if self.skip_default_graphics:
return
if self.get_devices("graphics"):
return
if self.os.is_container():
return
if self.os.arch not in ["x86_64", "i686", "ppc64", "ppc64le", "ia64"]:
return
self.add_device(VirtualGraphics(self.conn))
def add_default_devices(self):
self.add_default_graphics()
self.add_default_video_device()
self.add_default_input_device()
self.add_default_console_device()
self.add_default_usb_controller()
self.add_default_channels()
def _set_transient_device_defaults(self, install):
def do_remove_media(d):
# Keep cdrom around, but with no media attached,
# But only if we are a distro that doesn't have a multi
# stage install (aka not Windows)
return (d.is_cdrom() and
getattr(d, "installer_media", False) and
not install and
not self.get_continue_inst())
def do_skip_disk(d):
# Skip transient labeled non-media disks
return (d.is_disk() and
getattr(d, "installer_media", False) and
not install)
for dev in self.get_devices("disk"):
if do_skip_disk(dev):
self.remove_device(dev)
elif do_remove_media(dev):
dev.path = None
def _set_defaults(self):
self._set_clock_defaults()
self._set_emulator_defaults()
self._set_cpu_defaults()
self._set_feature_defaults()
for dev in self.get_all_devices():
dev.set_defaults(self)
self._check_address_multi()
self._set_disk_defaults()
self._add_implied_controllers()
self._set_net_defaults()
self._set_input_defaults()
self._set_graphics_defaults()
self._set_video_defaults()
self._set_sound_defaults()
def _is_full_os_container(self):
if not self.os.is_container():
return False
for fs in self.get_devices("filesystem"):
if fs.target == "/":
return True
return False
def _set_osxml_defaults(self):
if self.os.is_container() and not self.os.init:
if self._is_full_os_container():
self.os.init = "/sbin/init"
self.os.init = self.os.init or "/bin/sh"
if not self.os.loader and self.os.is_hvm() and self.type == "xen":
self.os.loader = "/usr/lib/xen/boot/hvmloader"
if self.os.os_type == "xen" and self.type == "xen":
# Use older libvirt 'linux' value for back compat
self.os.os_type = "linux"
if self.os.kernel or self.os.init:
self.os.bootorder = []
def _set_clock_defaults(self):
if not self.os.is_hvm():
return
if self.clock.offset is None:
self.clock.offset = self._os_object.get_clock()
if self.clock.timers:
return
if not self.os.is_x86():
return
if not self.conn.check_support(
self.conn.SUPPORT_CONN_ADVANCED_CLOCK):
return
# Set clock policy that maps to qemu options:
# -no-hpet -no-kvm-pit-reinjection -rtc driftfix=slew
#
# hpet: Is unneeded and has a performance penalty
# pit: While it has no effect on windows, it doesn't hurt and
# is beneficial for linux
#
# If libvirt/qemu supports it and using a windows VM, also
# specify hypervclock.
#
# This is what has been recommended by the RH qemu guys :)
rtc = self.clock.add_timer()
rtc.name = "rtc"
rtc.tickpolicy = "catchup"
pit = self.clock.add_timer()
pit.name = "pit"
pit.tickpolicy = "delay"
hpet = self.clock.add_timer()
hpet.name = "hpet"
hpet.present = False
if (self._os_object.is_windows() and
self.conn.check_support(self.conn.SUPPORT_CONN_HYPERV_CLOCK) and
self._hv_supported()):
hyperv = self.clock.add_timer()
hyperv.name = "hypervclock"
hyperv.present = True
def _set_emulator_defaults(self):
if self.os.is_xenpv():
self.emulator = None
return
if self.emulator:
return
if self.os.is_hvm() and self.type == "xen":
if self.conn.caps.host.cpu.arch == "x86_64":
self.emulator = "/usr/lib64/xen/bin/qemu-dm"
else:
self.emulator = "/usr/lib/xen/bin/qemu-dm"
def _set_cpu_defaults(self):
self.cpu.set_topology_defaults(self.vcpus)
if not self.conn.is_test() and not self.conn.is_qemu():
return
if (self.cpu.get_xml_config().strip() or
self.cpu.special_mode_was_set):
# User already configured CPU
return
if self.os.is_arm_machvirt() and self.type == "kvm":
# Should be host-passthrough, but the libvirt support is
# incomplete for arm cpu
self.cpu.model = "host"
elif self.os.is_arm64() and self.os.is_arm_machvirt():
# -M virt defaults to a 32bit CPU, even if using aarch64
self.cpu.model = "cortex-a57"
elif self.os.is_x86() and self.type == "kvm":
if self.os.arch != self.conn.caps.host.cpu.arch:
return
self.cpu.set_special_mode(self.x86_cpu_default)
def _hv_supported(self):
if (self.os.loader_type == "pflash" and
self.os_variant in ("win2k8r2", "win7")):
return False
return True
def _set_feature_defaults(self):
if self.os.is_container():
self.features.acpi = None
self.features.apic = None
self.features.pae = None
if self._is_full_os_container():
self.features.privnet = True
return
if not self.os.is_hvm():
return
default = True
if (self._os_object.need_old_xen_disable_acpi() and
not self.conn.check_support(support.SUPPORT_CONN_CAN_ACPI)):
default = False
if self.features.acpi == "default":
self.features.acpi = self._os_object.supports_acpi(default)
if self.features.apic == "default":
self.features.apic = self._os_object.supports_apic(default)
if self.features.pae == "default":
self.features.pae = self.conn.caps.supports_pae()
if (self._os_object.is_windows() and
self._hv_supported() and
self.conn.check_support(self.conn.SUPPORT_CONN_HYPERV_VAPIC)):
if self.features.hyperv_relaxed is None:
self.features.hyperv_relaxed = True
if self.features.hyperv_vapic is None:
self.features.hyperv_vapic = True
if self.features.hyperv_spinlocks is None:
self.features.hyperv_spinlocks = True
if self.features.hyperv_spinlocks_retries is None:
self.features.hyperv_spinlocks_retries = 8191
def _add_implied_controllers(self):
has_spapr_scsi = False
has_virtio_scsi = False
has_any_scsi = False
for dev in self.get_devices("controller"):
if dev.type == "scsi":
has_any_scsi = True
if dev.address.type == "spapr-vio":
has_spapr_scsi = True
if dev.model == "virtio":
has_virtio_scsi = True
# Add spapr-vio controller if needed
if not has_spapr_scsi:
for dev in self.get_devices("disk"):
if dev.address.type == "spapr-vio":
ctrl = VirtualController(self.conn)
ctrl.type = "scsi"
ctrl.address.set_addrstr("spapr-vio")
self.add_device(ctrl)
break
# Add virtio-scsi controller if needed
if (self.os.is_arm_machvirt() and
not has_any_scsi and
not has_virtio_scsi):
for dev in self.get_devices("disk"):
if dev.bus == "scsi":
ctrl = VirtualController(self.conn)
ctrl.type = "scsi"
ctrl.model = "virtio-scsi"
self.add_device(ctrl)
break
def _check_address_multi(self):
addresses = {}
for d in self.get_all_devices():
if d.address.type != d.address.ADDRESS_TYPE_PCI:
continue
addr = d.address
addrstr = "%d%d%d" % (d.address.domain,
d.address.bus,
d.address.slot)
if addrstr not in addresses:
addresses[addrstr] = {}
if addr.function in addresses[addrstr]:
raise ValueError(_("Duplicate address for devices %s and %s") %
(str(d), str(addresses[addrstr][addr.function])))
addresses[addrstr][addr.function] = d
for devs in addresses.values():
if len(devs) > 1 and 0 in devs:
devs[0].address.multifunction = True
def _hv_only_supports_virtio(self):
# Only supports virtio so we need to force it
return self.conn.is_qemu() and self.os.is_arm_machvirt()
def _hv_supports_virtio(self):
if not self.conn.is_qemu():
return False
if self._hv_only_supports_virtio():
return True
if self.os.is_x86():
return True
if (self.os.is_arm_vexpress() and
self.os.dtb and
self._os_object.supports_virtiommio() and
self.conn.check_support(support.SUPPORT_CONN_VIRTIO_MMIO)):
return True
return False
def _set_disk_defaults(self, disks=None):
alldisks = self.get_devices("disk")
if disks is None:
disks = alldisks
def set_disk_bus(d):
if d.is_floppy():
d.bus = "fdc"
return
if self.os.is_xenpv():
d.bus = "xen"
return
if not self.os.is_hvm():
# This likely isn't correct, but it's kind of a catch all
# for virt types we don't know how to handle.
d.bus = "ide"
return
if self.os.is_arm_machvirt():
# We prefer virtio-scsi for machvirt, gets us hotplug
d.bus = "scsi"
elif (d.is_disk() and
(self._hv_only_supports_virtio() or
(self._hv_supports_virtio() and
self._os_object.supports_virtiodisk()))):
d.bus = "virtio"
elif self.os.is_pseries():
d.bus = "scsi"
elif self.os.is_arm():
d.bus = "sd"
elif self.os.is_q35():
d.bus = "sata"
else:
d.bus = "ide"
# Generate disk targets
used_targets = []
for disk in disks:
if not disk.bus:
set_disk_bus(disk)
for disk in alldisks:
if disk.target and not getattr(disk,
"cli_generated_target", False):
used_targets.append(disk.target)
elif disk in disks:
disk.cli_generated_target = False
used_targets.append(disk.generate_target(used_targets))
def _set_net_defaults(self):
net_model = None
if not self.os.is_hvm():
net_model = None
elif (self._hv_only_supports_virtio() or
(self._hv_supports_virtio() and
self._os_object.supports_virtionet())):
net_model = "virtio"
else:
net_model = self._os_object.default_netmodel()
if net_model:
for net in self.get_devices("interface"):
if not net.model:
net.model = net_model
def _set_input_defaults(self):
input_type = self._os_object.default_inputtype()
input_bus = self._os_object.default_inputbus()
if self.os.is_xenpv():
input_type = VirtualInputDevice.TYPE_MOUSE
input_bus = VirtualInputDevice.BUS_XEN
for inp in self.get_devices("input"):
if (inp.type == inp.TYPE_DEFAULT and
inp.bus == inp.BUS_DEFAULT):
inp.type = input_type
inp.bus = input_bus
def _set_sound_defaults(self):
if self.conn.check_support(
support.SUPPORT_CONN_SOUND_ICH6):
default = "ich6"
elif self.conn.check_support(
support.SUPPORT_CONN_SOUND_AC97):
default = "ac97"
else:
default = "es1370"
for sound in self.get_devices("sound"):
if sound.model == sound.MODEL_DEFAULT:
sound.model = default
def _set_graphics_defaults(self):
for gfx in self.get_devices("graphics"):
if gfx.type != "default":
continue
gtype = self.default_graphics_type
logging.debug("Using default_graphics=%s", gtype)
if (gtype == "spice" and not
self.conn.check_support(
self.conn.SUPPORT_CONN_GRAPHICS_SPICE)):
logging.debug("spice requested but HV doesn't support it. "
"Using vnc.")
gtype = "vnc"
gfx.type = gtype
def _add_spice_channels(self):
if self.skip_default_channel:
return
for chn in self.get_devices("channel"):
if chn.type == chn.TYPE_SPICEVMC:
return
if self.conn.check_support(self.conn.SUPPORT_CONN_CHAR_SPICEVMC):
agentdev = VirtualChannelDevice(self.conn)
agentdev.type = agentdev.TYPE_SPICEVMC
self.add_device(agentdev)
def _add_spice_sound(self):
if self.skip_default_sound:
return
if self.get_devices("sound"):
return
self.add_default_sound_device()
def _add_spice_usbredir(self):
if self.skip_default_usbredir:
return
if self.get_devices("redirdev"):
return
if not self.conn.check_support(self.conn.SUPPORT_CONN_USBREDIR):
return
# If we use 4 devices here, we fill up all the emulated USB2 slots,
# and directly assigned devices are forced to fall back to USB1
# https://bugzilla.redhat.com/show_bug.cgi?id=1135488
for ignore in range(2):
dev = VirtualRedirDevice(self.conn)
dev.bus = "usb"
dev.type = "spicevmc"
self.add_device(dev)
def has_spice(self):
for gfx in self.get_devices("graphics"):
if gfx.type == gfx.TYPE_SPICE:
return True
def _set_video_defaults(self):
if self.has_spice():
self._add_spice_channels()
self._add_spice_sound()
self._add_spice_usbredir()
video_model = self._os_object.default_videomodel(self)
if video_model == 'vmvga' and self.stable_defaults(force=True):
video_model = 'vga'
for video in self.get_devices("video"):
if video.model == video.MODEL_DEFAULT:
video.model = video_model
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