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f04b284f21
virt-manager/virtinst/guest.py
Cole Robinson f04b284f21 xmlbuilder: Abstract libxml2 API and cleanup 
Moves the libxml2 bits to a separate xmlapi file and class, a bunch
of cleanups to xmlbuilder internals dealing with XML stuff.

The main point is to experiment with different XML library impls,
since libxml2 is unfun to deal with and we are having python3
issues like

https://bugzilla.gnome.org/show_bug.cgi?id=776815
2018-02-20 11:23:37 -05:00

1270 lines
42 KiB
Python
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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 os
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 .cputune import CPUTune
from .device import VirtualDevice
from .deviceaudio import VirtualAudio
from .devicechar import VirtualChannelDevice, VirtualConsoleDevice
from .devicecontroller import VirtualController
from .devicedisk import VirtualDisk
from .devicegraphics import VirtualGraphics
from .deviceinput import VirtualInputDevice
from .devicepanic import VirtualPanicDevice
from .deviceredirdev import VirtualRedirDevice
from .devicerng import VirtualRNGDevice
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 .sysinfo import SYSInfo
from .xmlbuilder import XMLBuilder, XMLProperty, XMLChildProperty
from .xmlnsqemu import XMLNSQemu
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 as 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 Exception:
return
raise ValueError(_("Guest name '%s' is already in use.") % name)
_XML_ROOT_NAME = "domain"
_XML_PROP_ORDER = ["type", "name", "uuid", "title", "description",
"hotplugmemorymax", "hotplugmemoryslots", "maxmemory", "memory", "blkiotune",
"memtune", "memoryBacking", "vcpus", "curvcpus", "vcpu_placement",
"cpuset", "numatune", "resource", "sysinfo", "bootloader", "os", "idmap",
"features", "cpu", "clock", "on_poweroff", "on_reboot", "on_crash",
"pm", "emulator", "_devices", "seclabels"]
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.skip_default_rng = False
self.x86_cpu_default = self.cpu.SPECIAL_MODE_HOST_MODEL_ONLY
self.__os_object = None
self._random_uuid = None
self._install_cdrom_device = None
self._defaults_are_set = False
# The libvirt virDomain object we 'Create'
self.domain = None
# This is set via Capabilities.build_virtinst_guest
self.capsinfo = 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)
hotplugmemorymax = XMLProperty("./maxMemory", is_int=True)
hotplugmemoryslots = XMLProperty("./maxMemory/@slots", 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)
vcpu_placement = XMLProperty("./vcpu/@placement")
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", 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")
on_reboot = XMLProperty("./on_reboot")
on_crash = XMLProperty("./on_crash")
on_lockfailure = XMLProperty("./on_lockfailure")
seclabels = XMLChildProperty(Seclabel)
os = XMLChildProperty(OSXML, is_single=True)
features = XMLChildProperty(DomainFeatures, is_single=True)
clock = XMLChildProperty(Clock, is_single=True)
cpu = XMLChildProperty(CPU, is_single=True)
cputune = XMLChildProperty(CPUTune, 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)
sysinfo = XMLChildProperty(SYSInfo, is_single=True)
xmlns_qemu = XMLChildProperty(XMLNSQemu, 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):
ignore = dry
# Fetch install media, prepare installer devices
self.installer.prepare(self, meter)
# Initialize install device list
if self._install_cdrom_device:
self._install_cdrom_device.path = self.installer.cdrom_path()
self._install_cdrom_device.validate()
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.bootorder, self.os.kernel, self.os.initrd,
self.os.kernel_args, self.on_reboot)
return data
def _finish_get_xml(self, data):
(self.os.bootorder, self.os.kernel, self.os.initrd,
self.os.kernel_args, 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):
"""
Return the full Guest xml configuration.
@install: Whether we want the 'OS install' configuration or
the 'post-install' configuration. The difference is mostly
whether the install media is attached and set as the boot
device. Some installs, like an import or livecd, do not have
an 'install' config.
"""
if install and not self.installer.has_install_phase():
return None
self.installer.alter_bootconfig(self, install)
if not install:
self._remove_cdrom_install_media()
if install:
self.on_reboot = "destroy"
self._set_osxml_defaults()
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()
###########################
# Private install helpers #
###########################
def _build_xml(self):
install_xml = self._get_install_xml(install=True)
final_xml = self._get_install_xml(install=False)
logging.debug("Generated install XML: %s",
(install_xml and ("\n" + install_xml) or "None required"))
logging.debug("Generated boot XML: \n%s", final_xml)
return install_xml, final_xml
def _manual_transient_create(self, install_xml, final_xml, needs_boot):
"""
For hypervisors (like vz) that don't implement createXML,
we need to define+start, and undefine on start failure
"""
domain = self.conn.defineXML(install_xml or final_xml)
if not needs_boot:
return domain
# Handle undefining the VM if the initial startup fails
try:
domain.create()
except Exception:
try:
domain.undefine()
except Exception:
pass
raise
if install_xml and install_xml != final_xml:
domain = self.conn.defineXML(final_xml)
return domain
def _create_guest(self, meter, install_xml, final_xml, doboot, transient):
"""
Actually do the XML logging, guest defining/creating
:param doboot: Boot guest even if it has no install phase
"""
meter_label = _("Creating domain...")
meter = util.ensure_meter(meter)
meter.start(size=None, text=meter_label)
needs_boot = doboot or self.installer.has_install_phase()
if self.type == "vz":
if transient:
raise RuntimeError(_("Domain type 'vz' doesn't support "
"transient installs."))
domain = self._manual_transient_create(
install_xml, final_xml, needs_boot)
else:
if transient or needs_boot:
domain = self.conn.createXML(install_xml or final_xml, 0)
if not transient:
domain = self.conn.defineXML(final_xml)
self.domain = domain
try:
logging.debug("XML fetched from libvirt object:\n%s",
self.domain.XMLDesc(0))
except Exception as e:
logging.debug("Error fetching XML from libvirt object: %s", e)
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 as e:
if util.is_error_nosupport(e):
logging.warning("Could not set autostart flag: libvirt "
"connection does not support autostart.")
else:
raise e
##############
# Public API #
##############
def start_install(self, meter=None,
dry=False, return_xml=False,
doboot=True, transient=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!"))
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)
install_xml, final_xml = self._build_xml()
if return_xml:
return (install_xml, final_xml)
if dry:
return
# Remove existing VM if requested
self.check_vm_collision(self.conn, self.name,
do_remove=self.replace)
self._create_guest(meter, install_xml, final_xml,
doboot, transient)
# Set domain autostart flag if requested
self._flag_autostart()
finally:
self.installer.cleanup()
def get_created_disks(self):
return [d for d in self.get_devices("disk") if d.storage_was_created]
def cleanup_created_disks(self, meter):
"""
Remove any disks we created as part of the install. Only ever
called by clients.
"""
clean_disks = self.get_created_disks()
if not clean_disks:
return
for disk in clean_disks:
logging.debug("Removing created disk path=%s vol_object=%s",
disk.path, disk.get_vol_object())
name = os.path.basename(disk.path)
try:
meter.start(size=None, text=_("Removing disk '%s'") % name)
if disk.get_vol_object():
disk.get_vol_object().delete()
else:
os.unlink(disk.path)
meter.end(0)
except Exception as e:
logging.debug("Failed to remove disk '%s'",
name, exc_info=True)
logging.error("Failed to remove disk '%s': %s", name, 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
self.check_uefi_secure()
def check_uefi_secure(self):
"""
If the firmware name contains "secboot" it is probably build
with SMM feature required so we need to enable that feature,
otherwise the firmware may fail to load. True secure boot is
currently supported only on x86 architecture and with q35 with
SMM feature enabled so change the machine to q35 as well.
To actually enforce the secure boot for the guest if Secure Boot
Mode is configured we need to enable loader secure feature.
"""
if not self.os.is_x86():
return
if "secboot" not in self.os.loader:
return
if (not self.conn.check_support(self.conn.SUPPORT_DOMAIN_FEATURE_SMM) or
not self.conn.check_support(self.conn.SUPPORT_DOMAIN_LOADER_SECURE)):
return
self.features.smm = True
self.os.loader_secure = True
self.os.machine = "q35"
###################
# 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 _usb_disabled(self):
controllers = [c for c in self.get_devices("controller") if
c.type == "usb"]
if not controllers:
return False
return all([c.model == "none" for c in controllers])
def add_default_input_device(self):
if self.os.is_container():
return
if self.get_devices("input"):
return
if not self.get_devices("graphics"):
return
if self._usb_disabled():
return
usb_tablet = False
usb_keyboard = False
if self.os.is_x86():
usb_tablet = self._os_object.supports_usbtablet()
if self.os.is_arm_machvirt():
usb_tablet = True
usb_keyboard = True
if usb_tablet:
dev = VirtualInputDevice(self.conn)
dev.type = "tablet"
dev.bus = "usb"
self.add_device(dev)
if usb_keyboard:
dev = VirtualInputDevice(self.conn)
dev.type = "keyboard"
dev.bus = "usb"
self.add_device(dev)
def add_default_console_device(self):
if self.skip_default_console:
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_s390x():
dev.target_type = "sclp"
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 any([d.type == "usb" for d in self.get_devices("controller")]):
return
usb2 = False
usb3 = False
if self.os.is_x86():
usb2 = True
elif (self.os.is_arm_machvirt() and
self.conn.check_support(
self.conn.SUPPORT_CONN_MACHVIRT_PCI_DEFAULT)):
usb3 = True
if not usb2 and not usb3:
return
if usb2:
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)
if usb3:
self.add_device(
VirtualController.get_usb3_controller(self.conn, self))
def add_default_channels(self):
if self.skip_default_channel:
return
if self.get_devices("channel"):
return
if self.os.is_s390x():
# Not wanted for s390 apparently
return
if (self.conn.is_qemu() 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() and not self.conn.is_vz():
return
if self.os.arch not in ["x86_64", "i686", "ppc64", "ppc64le"]:
return
self.add_device(VirtualGraphics(self.conn))
def add_default_rng(self):
if self.skip_default_rng:
return
if self.get_devices("rng"):
return
if not (self.os.is_x86() or
self.os.is_arm_machvirt() or
self.os.is_pseries()):
return
if (self.conn.is_qemu() and
self._os_object.supports_virtiorng() and
self.conn.check_support(self.conn.SUPPORT_CONN_RNG_URANDOM)):
dev = VirtualRNGDevice(self.conn)
dev.type = "random"
dev.device = "/dev/urandom"
self.add_device(dev)
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()
self.add_default_rng()
def _add_install_cdrom(self):
if self._install_cdrom_device:
return
if not self.installer.needs_cdrom():
return
dev = VirtualDisk(self.conn)
dev.device = dev.DEVICE_CDROM
setattr(dev, "installer_media", not self.installer.livecd)
self._install_cdrom_device = dev
self.add_device(dev)
def _remove_cdrom_install_media(self):
for dev in self.get_devices("disk"):
# Keep the install cdrom device around, but with no media attached.
# But only if we are installing windows which has a multi stage
# install.
if (dev.is_cdrom() and
getattr(dev, "installer_media", False) and
not self._os_object.is_windows()):
dev.path = None
def _set_defaults(self):
self._add_install_cdrom()
# some options check for has_spice() which is resolved after this:
self._set_graphics_defaults()
self._set_clock_defaults()
self._set_emulator_defaults()
self._set_cpu_defaults()
self._set_feature_defaults()
self._set_pm_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_video_defaults()
self._set_sound_defaults()
self._set_panic_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.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.timers.add_new()
rtc.name = "rtc"
rtc.tickpolicy = "catchup"
pit = self.clock.timers.add_new()
pit.name = "pit"
pit.tickpolicy = "delay"
hpet = self.clock.timers.add_new()
hpet.name = "hpet"
hpet.present = False
hv_clock = self.conn.check_support(self.conn.SUPPORT_CONN_HYPERV_CLOCK)
hv_clock_rhel = self.conn.check_support(self.conn.SUPPORT_CONN_HYPERV_CLOCK_RHEL)
if (self._os_object.is_windows() and self._hyperv_supported() and
(hv_clock or (self.stable_defaults() and hv_clock_rhel))):
hyperv = self.clock.timers.add_new()
hyperv.name = "hypervclock"
hyperv.present = True
def _set_emulator_defaults(self):
if self.os.is_xenpv() or self.type == "vz":
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":
self.cpu.mode = self.cpu.SPECIAL_MODE_HOST_PASSTHROUGH
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)
if self._os_object.broken_x2apic():
self.cpu.add_feature("x2apic", policy="disable")
def _hyperv_supported(self):
if (self.os.loader_type == "pflash" and
self.os_variant in ("win2k8r2", "win7")):
return False
return True
def update_defaults(self):
# This is used only by virt-manager to reset any defaults that may have
# changed through manual intervention via the customize wizard.
# UEFI doesn't work with hyperv bits
if not self._hyperv_supported():
self.features.hyperv_relaxed = None
self.features.hyperv_vapic = None
self.features.hyperv_spinlocks = None
self.features.hyperv_spinlocks_retries = None
for i in self.clock.timers:
if i.name == "hypervclock":
self.clock.remove_timer(i)
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() and self.type != "vz":
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":
if default:
self.features.acpi = self.capsinfo.guest.supports_acpi()
else:
self.features.acpi = False
if self.features.apic == "default":
self.features.apic = self.capsinfo.guest.supports_apic()
if self.features.pae == "default":
if (self.os.is_hvm() and
self.type == "xen" and
self.os.arch == "x86_64"):
self.features.pae = True
else:
self.features.pae = self.capsinfo.guest.supports_pae()
if (self.features.vmport == "default" and
self.os.is_x86() and
self.has_spice() and
self.conn.check_support(self.conn.SUPPORT_CONN_VMPORT)):
self.features.vmport = False
if (self._os_object.is_windows() and
self._hyperv_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 _set_pm_defaults(self):
# When the suspend feature is exposed to VMs, an ACPI shutdown
# event triggers a suspend in the guest, which causes a lot of
# user confusion (especially compounded with the face that suspend
# is often buggy so VMs can get hung, etc).
#
# We've been disabling this in virt-manager for a while, but lets
# do it here too for consistency.
if (self.os.is_x86() and
self.conn.check_support(self.conn.SUPPORT_CONN_PM_DISABLE)):
if self.pm.suspend_to_mem is None:
self.pm.suspend_to_mem = False
if self.pm.suspend_to_disk is None:
self.pm.suspend_to_disk = False
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() or self.os.is_pseries()) 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
if None in [d.address.domain, d.address.bus, d.address.slot]:
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 list(addresses.values()):
if len(devs) > 1 and 0 in devs:
devs[0].address.multifunction = True
def _supports_virtio(self, os_support):
if not self.conn.is_qemu():
return False
# These _only_ support virtio so don't check the OS
if (self.os.is_arm_machvirt() or
self.os.is_s390x() or
self.os.is_pseries()):
return True
if not os_support:
return False
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 = self.get_devices("disk")
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._supports_virtio(self._os_object.supports_virtiodisk())):
d.bus = "virtio"
elif self.os.is_pseries() and d.is_cdrom():
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 disks:
if (disk.target and
not getattr(disk, "cli_generated_target", False)):
used_targets.append(disk.target)
else:
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._supports_virtio(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_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):
def _set_type(gfx):
gtype = self.default_graphics_type
logging.debug("Using default_graphics=%s", gtype)
if (gtype == "spice" and not
(self.conn.caps.host.cpu.arch in ["i686", "x86_64"] and
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
for dev in self.get_devices("graphics"):
if dev.type == "default":
_set_type(dev)
if (dev.type == "spice" and
not self.conn.is_remote() and
self.conn.check_support(
self.conn.SUPPORT_CONN_SPICE_COMPRESSION)):
logging.debug("Local connection, disabling spice image "
"compression.")
if dev.image_compression is None:
dev.image_compression = "off"
if dev.type == "spice" and dev.gl:
if not self.conn.check_support(
self.conn.SUPPORT_CONN_SPICE_GL):
raise ValueError(_("Host does not support spice GL"))
# If spice GL but rendernode wasn't specified, hardcode
# the first one
if not dev.rendernode and self.conn.check_support(
self.conn.SUPPORT_CONN_SPICE_RENDERNODE):
for nodedev in self.conn.fetch_all_nodedevs():
if (nodedev.device_type != 'drm' or
nodedev.drm_type != 'render'):
continue
dev.rendernode = nodedev.get_devnode().path
break
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
if not self.os.is_hvm():
return
if not (self.os.is_x86() or
self.os.is_arm_machvirt):
return
self.add_device(VirtualAudio(self.conn))
def _add_spice_usbredir(self):
if self.skip_default_usbredir:
return
if self.get_devices("redirdev"):
return
if not self.os.is_x86():
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 has_gl(self):
for gfx in self.get_devices("graphics"):
if gfx.gl:
return True
def has_listen_none(self):
for gfx in self.get_devices("graphics"):
listen = gfx.get_first_listen_type()
if listen and listen == "none":
return True
return False
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 self.os.is_arm_machvirt():
video_model = "virtio"
for video in self.get_devices("video"):
if video.model == video.MODEL_DEFAULT:
video.model = video_model
if video.model == 'virtio' and self.has_gl():
video.accel3d = True
def _set_panic_defaults(self):
for panic in self.get_devices("panic"):
if panic.model == VirtualPanicDevice.MODEL_DEFAULT:
panic.model = VirtualPanicDevice.get_default_model(self.os)
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