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virt-manager/virtManager/domain.py
Radostin Stoyanov b93cc3bbc9 pycodestyle: Do not use bare 'except:' 
A bare 'except:' catches all exceptions [1], including SystemExit,
KeyboardInterrupt, and GeneratorExit (which is not an error and should
not normally be caught by user code). In situations where you need to
catch all “normal” errors, you can catch the base class for all normal
exceptions, Exception [2].

[1] https://docs.python.org/2/howto/doanddont.html#except
[2] https://docs.python.org/2/library/exceptions.html#Exception
2017-08-02 13:57:43 -04:00

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#
# Copyright (C) 2006, 2013, 2014 Red Hat, Inc.
# Copyright (C) 2006 Daniel P. Berrange <berrange@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 time
import threading
import libvirt
from gi.repository import GObject
from virtinst import DomainCapabilities
from virtinst import DomainSnapshot
from virtinst import Guest
from virtinst import util
from virtinst import VirtualController
from virtinst import VirtualDisk
from .libvirtobject import vmmLibvirtObject
if not hasattr(libvirt, "VIR_DOMAIN_PMSUSPENDED"):
setattr(libvirt, "VIR_DOMAIN_PMSUSPENDED", 7)
vm_status_icons = {
libvirt.VIR_DOMAIN_BLOCKED: "state_running",
libvirt.VIR_DOMAIN_CRASHED: "state_shutoff",
libvirt.VIR_DOMAIN_PAUSED: "state_paused",
libvirt.VIR_DOMAIN_RUNNING: "state_running",
libvirt.VIR_DOMAIN_SHUTDOWN: "state_shutoff",
libvirt.VIR_DOMAIN_SHUTOFF: "state_shutoff",
libvirt.VIR_DOMAIN_NOSTATE: "state_running",
libvirt.VIR_DOMAIN_PMSUSPENDED: "state_paused",
}
class _SENTINEL(object):
pass
def compare_device(origdev, newdev, idx):
devprops = {
"disk" : ["target", "bus"],
"interface" : ["macaddr", "vmmindex"],
"input" : ["bus", "type", "vmmindex"],
"sound" : ["model", "vmmindex"],
"video" : ["model", "vmmindex"],
"watchdog" : ["vmmindex"],
"hostdev" : ["type", "managed", "vmmindex",
"product", "vendor",
"function", "domain", "slot"],
"serial" : ["type", "target_port"],
"parallel" : ["type", "target_port"],
"console" : ["type", "target_type", "target_port"],
"graphics" : ["type", "vmmindex"],
"controller" : ["type", "index"],
"channel" : ["type", "target_name"],
"filesystem" : ["target" , "vmmindex"],
"smartcard" : ["mode" , "vmmindex"],
"redirdev" : ["bus" , "type", "vmmindex"],
"tpm" : ["type" , "vmmindex"],
"rng" : ["type" , "vmmindex"],
"panic" : ["type" , "vmmindex"],
}
if id(origdev) == id(newdev):
return True
if type(origdev) is not type(newdev):
return False
for devprop in devprops[origdev.virtual_device_type]:
origval = getattr(origdev, devprop)
if devprop == "vmmindex":
newval = idx
else:
newval = getattr(newdev, devprop)
if origval != newval:
return False
return True
def _find_device(guest, origdev):
devlist = guest.get_devices(origdev.virtual_device_type)
for idx, dev in enumerate(devlist):
if compare_device(origdev, dev, idx):
return dev
return None
def start_job_progress_thread(vm, meter, progtext):
current_thread = threading.currentThread()
def jobinfo_cb():
while True:
time.sleep(.5)
if not current_thread.isAlive():
return False
try:
jobinfo = vm.job_info()
data_total = float(jobinfo[3])
# data_processed = float(jobinfo[4])
data_remaining = float(jobinfo[5])
# data_total is 0 if the job hasn't started yet
if not data_total:
continue
if not meter.started:
meter.start(size=data_total,
text=progtext)
progress = data_total - data_remaining
meter.update(progress)
except Exception:
logging.exception("Error calling jobinfo")
return False
return True
if vm.getjobinfo_supported:
t = threading.Thread(target=jobinfo_cb,
name="job progress reporting",
args=())
t.daemon = True
t.start()
class vmmInspectionData(object):
def __init__(self):
self.os_type = None
self.distro = None
self.major_version = None
self.minor_version = None
self.hostname = None
self.product_name = None
self.product_variant = None
self.icon = None
self.applications = None
self.error = False
class vmmDomainSnapshot(vmmLibvirtObject):
"""
Class wrapping a virDomainSnapshot object
"""
def __init__(self, conn, backend):
vmmLibvirtObject.__init__(self, conn, backend, backend.getName(),
DomainSnapshot)
##########################
# Required class methods #
##########################
def _backend_get_name(self):
return self._backend.getName()
def _conn_tick_poll_param(self):
return None
def class_name(self):
return "snapshot"
def _XMLDesc(self, flags):
return self._backend.getXMLDesc(flags=flags)
def _get_backend_status(self):
return self._STATUS_ACTIVE
def tick(self, stats_update=True):
ignore = stats_update
def _init_libvirt_state(self):
self.ensure_latest_xml()
###########
# Actions #
###########
def delete(self, force=True):
ignore = force
self._backend.delete()
def run_status(self):
status = DomainSnapshot.state_str_to_int(self.get_xmlobj().state)
return vmmDomain.pretty_run_status(status)
def run_status_icon_name(self):
status = DomainSnapshot.state_str_to_int(self.get_xmlobj().state)
if status not in vm_status_icons:
logging.debug("Unknown status %d, using NOSTATE", status)
status = libvirt.VIR_DOMAIN_NOSTATE
return vm_status_icons[status]
def is_current(self):
return self._backend.isCurrent()
def is_external(self):
if self.get_xmlobj().memory_type == "external":
return True
for disk in self.get_xmlobj().disks:
if disk.snapshot == "external":
return True
return False
class vmmDomain(vmmLibvirtObject):
"""
Class wrapping virDomain libvirt objects. Is also extended to be
backed by a virtinst.Guest object for new VM 'customize before install'
"""
__gsignals__ = {
"resources-sampled": (GObject.SignalFlags.RUN_FIRST, None, []),
"inspection-changed": (GObject.SignalFlags.RUN_FIRST, None, []),
"pre-startup": (GObject.SignalFlags.RUN_FIRST, None, [object]),
}
@staticmethod
def pretty_run_status(status, has_saved=False):
if status == libvirt.VIR_DOMAIN_RUNNING:
return _("Running")
elif status == libvirt.VIR_DOMAIN_PAUSED:
return _("Paused")
elif status == libvirt.VIR_DOMAIN_SHUTDOWN:
return _("Shutting Down")
elif status == libvirt.VIR_DOMAIN_SHUTOFF:
if has_saved:
return _("Saved")
else:
return _("Shutoff")
elif status == libvirt.VIR_DOMAIN_CRASHED:
return _("Crashed")
elif status == libvirt.VIR_DOMAIN_PMSUSPENDED:
return _("Suspended")
logging.debug("Unknown status %s, returning 'Unknown'", status)
return _("Unknown")
@staticmethod
def pretty_status_reason(status, reason):
def key(x, y):
return getattr(libvirt, "VIR_DOMAIN_" + x, y)
reasons = {
libvirt.VIR_DOMAIN_RUNNING : {
key("RUNNING_BOOTED", 1) : _("Booted"),
key("RUNNING_MIGRATED", 2) : _("Migrated"),
key("RUNNING_RESTORED", 3) : _("Restored"),
key("RUNNING_FROM_SNAPSHOT", 4) : _("From snapshot"),
key("RUNNING_UNPAUSED", 5) : _("Unpaused"),
key("RUNNING_MIGRATION_CANCELED", 6) : _("Migration canceled"),
key("RUNNING_SAVE_CANCELED", 7) : _("Save canceled"),
key("RUNNING_WAKEUP", 8) : _("Event wakeup"),
key("RUNNING_CRASHED", 9) : _("Crashed"),
},
libvirt.VIR_DOMAIN_PAUSED : {
key("PAUSED_USER", 1) : _("User"),
key("PAUSED_MIGRATION", 2) : _("Migrating"),
key("PAUSED_SAVE", 3) : _("Saving"),
key("PAUSED_DUMP", 4) : _("Dumping"),
key("PAUSED_IOERROR", 5) : _("I/O error"),
key("PAUSED_WATCHDOG", 6) : _("Watchdog"),
key("PAUSED_FROM_SNAPSHOT", 7) : _("From snapshot"),
key("PAUSED_SHUTTING_DOWN", 8) : _("Shutting down"),
key("PAUSED_SNAPSHOT", 9) : _("Creating snapshot"),
key("PAUSED_CRASHED", 10) : _("Crashed"),
},
libvirt.VIR_DOMAIN_SHUTDOWN : {
key("SHUTDOWN_USER", 1) : _("User"),
},
libvirt.VIR_DOMAIN_SHUTOFF : {
key("SHUTOFF_SHUTDOWN", 1) : _("Shut Down"),
key("SHUTOFF_DESTROYED", 2) : _("Destroyed"),
key("SHUTOFF_CRASHED", 3) : _("Crashed"),
key("SHUTOFF_MIGRATED", 4) : _("Migrated"),
key("SHUTOFF_SAVED", 5) : _("Saved"),
key("SHUTOFF_FAILED", 6) : _("Failed"),
key("SHUTOFF_FROM_SNAPSHOT", 7) : _("From snapshot"),
},
libvirt.VIR_DOMAIN_CRASHED : {
key("CRASHED_PANICKED", 1) : _("Panicked"),
}
}
return reasons.get(status) and reasons[status].get(reason)
def __init__(self, conn, backend, key):
vmmLibvirtObject.__init__(self, conn, backend, key, Guest)
self.cloning = False
self._stats = []
self._stats_rates = {
"diskRdRate" : 10.0,
"diskWrRate" : 10.0,
"netTxRate" : 10.0,
"netRxRate" : 10.0,
}
self._install_abort = False
self._id = None
self._uuid = None
self._has_managed_save = None
self._snapshot_list = None
self._autostart = None
self._domain_caps = None
self._status_reason = None
self.managedsave_supported = False
self.remote_console_supported = False
self.title_supported = False
self.mem_stats_supported = False
self.domain_state_supported = False
self._enable_mem_stats = False
self._enable_cpu_stats = False
self._mem_stats_period_is_set = False
self._enable_net_poll = False
self._stats_net_supported = True
self._stats_net_skip = []
self._enable_disk_poll = False
self._stats_disk_supported = True
self._stats_disk_skip = []
self._summary_disk_stats_skip = False
self.inspection = vmmInspectionData()
def _cleanup(self):
for snap in self._snapshot_list or []:
snap.cleanup()
self._snapshot_list = None
def _init_libvirt_state(self):
self.managedsave_supported = self.conn.check_support(
self.conn.SUPPORT_DOMAIN_MANAGED_SAVE, self._backend)
self.remote_console_supported = self.conn.check_support(
self.conn.SUPPORT_DOMAIN_CONSOLE_STREAM, self._backend)
self.title_supported = self.conn.check_support(
self.conn.SUPPORT_DOMAIN_GET_METADATA, self._backend)
self.mem_stats_supported = self.conn.check_support(
self.conn.SUPPORT_DOMAIN_MEMORY_STATS, self._backend)
self.domain_state_supported = self.conn.check_support(
self.conn.SUPPORT_DOMAIN_STATE, self._backend)
# Determine available XML flags (older libvirt versions will error
# out if passed SECURE_XML, INACTIVE_XML, etc)
(self._inactive_xml_flags,
self._active_xml_flags) = self.conn.get_dom_flags(self._backend)
# This needs to come before initial stats tick
self._on_config_sample_network_traffic_changed()
self._on_config_sample_disk_io_changed()
self._on_config_sample_mem_stats_changed()
self._on_config_sample_cpu_stats_changed()
# Prime caches
info = self._backend.info()
self._refresh_status(newstatus=info[0])
self._tick_stats(info)
self.has_managed_save()
self.snapshots_supported()
# Hook up listeners that need to be cleaned up
self.add_gsettings_handle(
self.config.on_stats_enable_cpu_poll_changed(
self._on_config_sample_cpu_stats_changed))
self.add_gsettings_handle(
self.config.on_stats_enable_net_poll_changed(
self._on_config_sample_network_traffic_changed))
self.add_gsettings_handle(
self.config.on_stats_enable_disk_poll_changed(
self._on_config_sample_disk_io_changed))
self.add_gsettings_handle(
self.config.on_stats_enable_memory_poll_changed(
self._on_config_sample_mem_stats_changed))
if (self.get_name() == "Domain-0" and
self.get_uuid() == "00000000-0000-0000-0000-000000000000"):
# We don't want virt-manager to track Domain-0 since it
# doesn't work with our UI. Raising an error will ensures it
# is blacklisted.
raise RuntimeError("Can't track Domain-0 as a vmmDomain")
self.connect("pre-startup", self._prestartup_nodedev_check)
def _prestartup_nodedev_check(self, src, ret):
ignore = src
error = _("There is more than one '%s' device attached to "
"your host, and we can't determine which one to "
"use for your guest.\n"
"To fix this, remove and reattach the USB device "
"to your guest using the 'Add Hardware' wizard.")
for hostdev in self.get_hostdev_devices():
devtype = hostdev.type
if devtype != "usb":
continue
vendor = hostdev.vendor
product = hostdev.product
bus = hostdev.bus
device = hostdev.device
if vendor and product:
count = self.conn.get_nodedev_count("usb_device",
vendor,
product)
if count > 1 and not (bus and device):
prettyname = "%s %s" % (vendor, product)
ret.append(error % prettyname)
###########################
# Misc API getter methods #
###########################
def reports_stats(self):
return True
def _using_events(self):
return self.conn.using_domain_events
def get_id(self):
if self._id is None:
self._id = self._backend.ID()
return self._id
def status(self):
return self._normalize_status(self._get_status())
def status_reason(self):
if self._status_reason is None:
self._status_reason = 1
if self.domain_state_supported:
self._status_reason = self._backend.state()[1]
return self._status_reason
def get_cloning(self):
return self.cloning
def set_cloning(self, val):
self.cloning = bool(val)
# If manual shutdown or destroy specified, make sure we don't continue
# install process
def get_install_abort(self):
return bool(self._install_abort)
def stable_defaults(self):
return self.get_xmlobj().stable_defaults()
def has_spicevmc_type_redirdev(self):
devs = self.get_redirdev_devices()
for dev in devs:
if dev.type == "spicevmc":
return True
return False
def get_id_pretty(self):
i = self.get_id()
if i < 0:
return "-"
return str(i)
def has_nvram(self):
return bool(self.get_xmlobj().os.loader_ro is True and
self.get_xmlobj().os.loader_type == "pflash")
##################
# Support checks #
##################
def _get_getvcpus_supported(self):
return self.conn.check_support(
self.conn.SUPPORT_DOMAIN_GETVCPUS, self._backend)
getvcpus_supported = property(_get_getvcpus_supported)
def _get_getjobinfo_supported(self):
return self.conn.check_support(
self.conn.SUPPORT_DOMAIN_JOB_INFO, self._backend)
getjobinfo_supported = property(_get_getjobinfo_supported)
def snapshots_supported(self):
if not self.conn.check_support(
self.conn.SUPPORT_DOMAIN_LIST_SNAPSHOTS, self._backend):
return _("Libvirt connection does not support snapshots.")
if self.list_snapshots():
return
# Check if our disks are all qcow2
seen_qcow2 = False
for disk in self.get_disk_devices(refresh_if_nec=False):
if disk.read_only:
continue
if not disk.path:
continue
if disk.driver_type == "qcow2":
seen_qcow2 = True
continue
return _("Snapshots are only supported if all writeable disks "
"images allocated to the guest are qcow2 format.")
if not seen_qcow2:
return _("Snapshots require at least one writeable qcow2 disk "
"image allocated to the guest.")
def get_domain_capabilities(self):
if not self._domain_caps:
self._domain_caps = DomainCapabilities.build_from_guest(
self.get_xmlobj())
return self._domain_caps
#############################
# Internal XML handling API #
#############################
def _invalidate_xml(self):
vmmLibvirtObject._invalidate_xml(self)
self._id = None
self._status_reason = None
self._has_managed_save = None
def _lookup_device_to_define(self, xmlobj, origdev, for_hotplug):
if for_hotplug:
return origdev
dev = _find_device(xmlobj, origdev)
if dev:
return dev
# If we are removing multiple dev from an active VM, a double
# attempt may result in a lookup failure. If device is present
# in the active XML, assume all is good.
if _find_device(self.get_xmlobj(), origdev):
logging.debug("Device in active config but not inactive config.")
return
raise RuntimeError(_("Could not find specified device in the "
"inactive VM configuration: %s") % repr(origdev))
def _copy_nvram_file(self, new_name):
"""
We need to do this copy magic because there is no Libvirt storage API
to rename storage volume.
"""
old_nvram = VirtualDisk(self.conn.get_backend())
old_nvram.path = self.get_xmlobj().os.nvram
nvram_dir = os.path.dirname(old_nvram.path)
new_nvram_path = os.path.join(nvram_dir, "%s_VARS.fd" % new_name)
new_nvram = VirtualDisk(self.conn.get_backend())
nvram_install = VirtualDisk.build_vol_install(
self.conn.get_backend(), os.path.basename(new_nvram_path),
old_nvram.get_parent_pool(), old_nvram.get_size(), False)
nvram_install.input_vol = old_nvram.get_vol_object()
nvram_install.sync_input_vol(only_format=True)
new_nvram.set_vol_install(nvram_install)
new_nvram.validate()
new_nvram.setup()
return new_nvram, old_nvram
##############################
# Persistent XML change APIs #
##############################
def rename_domain(self, new_name):
new_nvram = None
old_nvram = None
if self.has_nvram():
new_nvram, old_nvram = self._copy_nvram_file(new_name)
try:
self.define_name(new_name)
except Exception as error:
if new_nvram:
try:
new_nvram.get_vol_object().delete(0)
except Exception as warn:
logging.debug("rename failed and new nvram was not "
"removed: '%s'", warn)
raise error
if new_nvram:
try:
old_nvram.get_vol_object().delete(0)
except Exception as warn:
logging.debug("old nvram file was not removed: '%s'", warn)
self.define_overview(nvram=new_nvram.path)
# Device Add/Remove
def add_device(self, devobj):
"""
Redefine guest with appended device XML 'devxml'
"""
xmlobj = self._make_xmlobj_to_define()
xmlobj.add_device(devobj)
self._redefine_xmlobj(xmlobj)
def remove_device(self, devobj):
"""
Remove passed device from the inactive guest XML
"""
# HACK: If serial and console are both present, they both need
# to be removed at the same time
con = None
if hasattr(devobj, "virtmanager_console_dup"):
con = getattr(devobj, "virtmanager_console_dup")
xmlobj = self._make_xmlobj_to_define()
editdev = self._lookup_device_to_define(xmlobj, devobj, False)
if not editdev:
return
if con:
rmcon = _find_device(xmlobj, con)
if rmcon:
xmlobj.remove_device(rmcon)
xmlobj.remove_device(editdev)
self._redefine_xmlobj(xmlobj)
def define_cpu(self, vcpus=_SENTINEL, maxvcpus=_SENTINEL,
model=_SENTINEL, sockets=_SENTINEL,
cores=_SENTINEL, threads=_SENTINEL):
guest = self._make_xmlobj_to_define()
if vcpus != _SENTINEL:
guest.curvcpus = int(vcpus)
if maxvcpus != _SENTINEL:
guest.vcpus = int(maxvcpus)
if sockets != _SENTINEL:
guest.cpu.sockets = sockets
guest.cpu.cores = cores
guest.cpu.threads = threads
if model != _SENTINEL:
if model in guest.cpu.SPECIAL_MODES:
guest.cpu.set_special_mode(model)
else:
guest.cpu.model = model
self._redefine_xmlobj(guest)
def define_memory(self, memory=_SENTINEL, maxmem=_SENTINEL):
guest = self._make_xmlobj_to_define()
if memory != _SENTINEL:
guest.memory = int(memory)
if maxmem != _SENTINEL:
guest.maxmemory = int(maxmem)
self._redefine_xmlobj(guest)
def define_overview(self, machine=_SENTINEL, description=_SENTINEL,
title=_SENTINEL, idmap_list=_SENTINEL, loader=_SENTINEL,
nvram=_SENTINEL):
guest = self._make_xmlobj_to_define()
if machine != _SENTINEL:
guest.os.machine = machine
if description != _SENTINEL:
guest.description = description or None
if title != _SENTINEL:
guest.title = title or None
if loader != _SENTINEL:
if loader is None:
# Implies seabios, aka the default, so clear everything
guest.os.loader = None
guest.os.loader_ro = None
guest.os.loader_type = None
guest.os.nvram = None
guest.os.nvram_template = None
else:
# Implies UEFI
guest.os.loader = loader
guest.os.loader_type = "pflash"
guest.os.loader_ro = True
guest.check_uefi_secure()
if nvram != _SENTINEL:
guest.os.nvram = nvram
if idmap_list != _SENTINEL:
if idmap_list is not None:
# pylint: disable=unpacking-non-sequence
(uid_target, uid_count, gid_target, gid_count) = idmap_list
guest.idmap.uid_start = 0
guest.idmap.uid_target = uid_target
guest.idmap.uid_count = uid_count
guest.idmap.gid_start = 0
guest.idmap.gid_target = gid_target
guest.idmap.gid_count = gid_count
else:
guest.idmap.clear()
self._redefine_xmlobj(guest)
def define_boot(self, boot_order=_SENTINEL, boot_menu=_SENTINEL,
kernel=_SENTINEL, initrd=_SENTINEL, dtb=_SENTINEL,
kernel_args=_SENTINEL, init=_SENTINEL, initargs=_SENTINEL):
guest = self._make_xmlobj_to_define()
def _change_boot_order():
boot_dev_order = []
devmap = dict((dev.vmmidstr, dev) for dev in
self.get_bootable_devices())
for b in boot_order:
if b in devmap:
boot_dev_order.append(devmap[b])
# Unset the traditional boot order
guest.os.bootorder = []
# Unset device boot order
for dev in guest.get_all_devices():
dev.boot.order = None
count = 1
for origdev in boot_dev_order:
dev = self._lookup_device_to_define(guest, origdev, False)
if not dev:
continue
dev.boot.order = count
count += 1
if boot_order != _SENTINEL:
if self.can_use_device_boot_order():
_change_boot_order()
else:
guest.os.bootorder = boot_order
if boot_menu != _SENTINEL:
guest.os.enable_bootmenu = bool(boot_menu)
if init != _SENTINEL:
guest.os.init = init
guest.os.set_initargs_string(initargs)
if kernel != _SENTINEL:
guest.os.kernel = kernel or None
if initrd != _SENTINEL:
guest.os.initrd = initrd or None
if dtb != _SENTINEL:
guest.os.dtb = dtb or None
if kernel_args != _SENTINEL:
guest.os.kernel_args = kernel_args or None
self._redefine_xmlobj(guest)
######################
# Device XML editing #
######################
def define_disk(self, devobj, do_hotplug,
path=_SENTINEL, readonly=_SENTINEL, serial=_SENTINEL,
shareable=_SENTINEL, removable=_SENTINEL, cache=_SENTINEL,
io=_SENTINEL, driver_type=_SENTINEL, bus=_SENTINEL, addrstr=_SENTINEL,
sgio=_SENTINEL):
xmlobj = self._make_xmlobj_to_define()
editdev = self._lookup_device_to_define(xmlobj, devobj, do_hotplug)
if not editdev:
return
def _change_bus():
oldprefix = editdev.get_target_prefix()[0]
oldbus = editdev.bus
editdev.bus = bus
if oldbus == bus:
return
editdev.address.clear()
editdev.address.set_addrstr(addrstr)
if oldprefix == editdev.get_target_prefix()[0]:
return
used = []
disks = (self.get_disk_devices() +
self.get_disk_devices(inactive=True))
for d in disks:
used.append(d.target)
if editdev.target:
used.remove(editdev.target)
editdev.target = None
editdev.generate_target(used)
if path != _SENTINEL:
editdev.path = path
if not do_hotplug:
editdev.sync_path_props()
if readonly != _SENTINEL:
editdev.read_only = readonly
if shareable != _SENTINEL:
editdev.shareable = shareable
if removable != _SENTINEL:
editdev.removable = removable
if cache != _SENTINEL:
editdev.driver_cache = cache or None
if io != _SENTINEL:
editdev.driver_io = io or None
if driver_type != _SENTINEL:
editdev.driver_type = driver_type or None
if serial != _SENTINEL:
editdev.serial = serial or None
if sgio != _SENTINEL:
editdev.sgio = sgio or None
if bus != _SENTINEL:
_change_bus()
if do_hotplug:
self.hotplug(device=editdev)
else:
self._redefine_xmlobj(xmlobj)
def define_network(self, devobj, do_hotplug,
ntype=_SENTINEL, source=_SENTINEL,
mode=_SENTINEL, model=_SENTINEL, addrstr=_SENTINEL,
vtype=_SENTINEL, managerid=_SENTINEL, typeid=_SENTINEL,
typeidversion=_SENTINEL, instanceid=_SENTINEL,
portgroup=_SENTINEL, macaddr=_SENTINEL):
xmlobj = self._make_xmlobj_to_define()
editdev = self._lookup_device_to_define(xmlobj, devobj, do_hotplug)
if not editdev:
return
if ntype != _SENTINEL:
editdev.source = None
editdev.type = ntype
editdev.source = source
editdev.source_mode = mode or None
editdev.portgroup = portgroup or None
if model != _SENTINEL:
if editdev.model != model:
editdev.address.clear()
editdev.address.set_addrstr(addrstr)
editdev.model = model
if vtype != _SENTINEL:
editdev.virtualport.type = vtype or None
editdev.virtualport.managerid = managerid or None
editdev.virtualport.typeid = typeid or None
editdev.virtualport.typeidversion = typeidversion or None
editdev.virtualport.instanceid = instanceid or None
if macaddr != _SENTINEL:
editdev.macaddr = macaddr
if do_hotplug:
self.hotplug(device=editdev)
else:
self._redefine_xmlobj(xmlobj)
def define_graphics(self, devobj, do_hotplug,
listen=_SENTINEL, addr=_SENTINEL, port=_SENTINEL, tlsport=_SENTINEL,
passwd=_SENTINEL, keymap=_SENTINEL, gtype=_SENTINEL,
gl=_SENTINEL, rendernode=_SENTINEL):
xmlobj = self._make_xmlobj_to_define()
editdev = self._lookup_device_to_define(xmlobj, devobj, do_hotplug)
if not editdev:
return
if addr != _SENTINEL:
editdev.listen = addr
if port != _SENTINEL:
editdev.port = port
if tlsport != _SENTINEL:
editdev.tlsPort = tlsport
if passwd != _SENTINEL:
editdev.passwd = passwd
if keymap != _SENTINEL:
editdev.keymap = keymap
if gtype != _SENTINEL:
editdev.type = gtype
if gl != _SENTINEL:
editdev.gl = gl
if rendernode != _SENTINEL:
editdev.rendernode = rendernode
if listen != _SENTINEL:
listentype = editdev.get_first_listen_type()
if listen == 'none':
editdev.set_listen_none()
elif listentype and listentype == 'none':
editdev.remove_all_listens()
if do_hotplug:
self.hotplug(device=editdev)
else:
self._redefine_xmlobj(xmlobj)
def define_sound(self, devobj, do_hotplug, model=_SENTINEL):
xmlobj = self._make_xmlobj_to_define()
editdev = self._lookup_device_to_define(xmlobj, devobj, do_hotplug)
if not editdev:
return
if model != _SENTINEL:
if editdev.model != model:
editdev.address.clear()
editdev.model = model
if do_hotplug:
self.hotplug(device=editdev)
else:
self._redefine_xmlobj(xmlobj)
def define_video(self, devobj, do_hotplug, model=_SENTINEL, accel3d=_SENTINEL):
xmlobj = self._make_xmlobj_to_define()
editdev = self._lookup_device_to_define(xmlobj, devobj, do_hotplug)
if not editdev:
return
if model != _SENTINEL and model != editdev.model:
editdev.model = model
editdev.address.clear()
# Clear out heads/ram values so they reset to default. If
# we ever allow editing these values in the UI we should
# drop this
editdev.vram = None
editdev.heads = None
editdev.ram = None
editdev.vgamem = None
editdev.accel3d = None
if accel3d != _SENTINEL:
editdev.accel3d = accel3d
if do_hotplug:
self.hotplug(device=editdev)
else:
self._redefine_xmlobj(xmlobj)
def define_watchdog(self, devobj, do_hotplug,
model=_SENTINEL, action=_SENTINEL):
xmlobj = self._make_xmlobj_to_define()
editdev = self._lookup_device_to_define(xmlobj, devobj, do_hotplug)
if not editdev:
return
if model != _SENTINEL:
if editdev.model != model:
editdev.address.clear()
editdev.model = model
if action != _SENTINEL:
editdev.action = action
if do_hotplug:
self.hotplug(device=editdev)
else:
self._redefine_xmlobj(xmlobj)
def define_smartcard(self, devobj, do_hotplug, model=_SENTINEL):
xmlobj = self._make_xmlobj_to_define()
editdev = self._lookup_device_to_define(xmlobj, devobj, do_hotplug)
if not editdev:
return
if model != _SENTINEL:
editdev.mode = model
editdev.type = editdev.TYPE_DEFAULT
if do_hotplug:
self.hotplug(device=editdev)
else:
self._redefine_xmlobj(xmlobj)
def define_controller(self, devobj, do_hotplug, model=_SENTINEL):
xmlobj = self._make_xmlobj_to_define()
editdev = self._lookup_device_to_define(xmlobj, devobj, do_hotplug)
if not editdev:
return
def _change_model():
if editdev.type == "usb":
ctrls = xmlobj.get_devices("controller")
ctrls = [x for x in ctrls if (x.type ==
VirtualController.TYPE_USB)]
for dev in ctrls:
xmlobj.remove_device(dev)
if model == "ich9-ehci1":
for dev in VirtualController.get_usb2_controllers(
xmlobj.conn):
xmlobj.add_device(dev)
else:
dev = VirtualController(xmlobj.conn)
dev.type = "usb"
dev.model = model
xmlobj.add_device(dev)
else:
editdev.model = model
editdev.address.clear()
self.hotplug(device=editdev)
if model != _SENTINEL:
_change_model()
if do_hotplug:
self.hotplug(device=editdev)
else:
self._redefine_xmlobj(xmlobj)
def define_filesystem(self, devobj, do_hotplug, newdev=_SENTINEL):
xmlobj = self._make_xmlobj_to_define()
editdev = self._lookup_device_to_define(xmlobj, devobj, do_hotplug)
if not editdev:
return
if newdev != _SENTINEL:
# pylint: disable=maybe-no-member
editdev.type = newdev.type
editdev.accessmode = newdev.accessmode
editdev.wrpolicy = newdev.wrpolicy
editdev.driver = newdev.driver
editdev.format = newdev.format
editdev.readonly = newdev.readonly
editdev.units = newdev.units
editdev.source = newdev.source
editdev.target = newdev.target
if do_hotplug:
self.hotplug(device=editdev)
else:
self._redefine_xmlobj(xmlobj)
def define_hostdev(self, devobj, do_hotplug, rom_bar=_SENTINEL):
xmlobj = self._make_xmlobj_to_define()
editdev = self._lookup_device_to_define(xmlobj, devobj, do_hotplug)
if not editdev:
return
if rom_bar != _SENTINEL:
editdev.rom_bar = rom_bar
if do_hotplug:
self.hotplug(device=editdev)
else:
self._redefine_xmlobj(xmlobj)
####################
# Hotplug routines #
####################
def attach_device(self, devobj):
"""
Hotplug device to running guest
"""
if not self.is_active():
return
devxml = devobj.get_xml_config()
logging.debug("attach_device with xml=\n%s", devxml)
self._backend.attachDevice(devxml)
def detach_device(self, devobj):
"""
Hotunplug device from running guest
"""
if not self.is_active():
return
devxml = devobj.get_xml_config()
logging.debug("detach_device with xml=\n%s", devxml)
self._backend.detachDevice(devxml)
def _update_device(self, devobj, flags=None):
if flags is None:
flags = getattr(libvirt, "VIR_DOMAIN_DEVICE_MODIFY_LIVE", 1)
xml = devobj.get_xml_config()
logging.debug("update_device with xml=\n%s", xml)
self._backend.updateDeviceFlags(xml, flags)
def hotplug(self, vcpus=_SENTINEL, memory=_SENTINEL, maxmem=_SENTINEL,
description=_SENTINEL, title=_SENTINEL, device=_SENTINEL):
if not self.is_active():
return
def _hotplug_memory(val):
if val != self.get_memory():
self._backend.setMemory(val)
def _hotplug_maxmem(val):
if val != self.maximum_memory():
self._backend.setMaxMemory(val)
def _hotplug_metadata(val, mtype):
flags = (libvirt.VIR_DOMAIN_AFFECT_LIVE |
libvirt.VIR_DOMAIN_AFFECT_CONFIG)
self._backend.setMetadata(mtype, val, None, None, flags)
if vcpus != _SENTINEL:
vcpus = int(vcpus)
if vcpus != self.vcpu_count():
self._backend.setVcpus(vcpus)
if memory != _SENTINEL:
logging.info("Hotplugging curmem=%s maxmem=%s for VM '%s'",
memory, maxmem, self.get_name())
actual_cur = self.get_memory()
if memory:
if maxmem < actual_cur:
# Set current first to avoid error
_hotplug_memory(memory)
_hotplug_maxmem(maxmem)
else:
_hotplug_maxmem(maxmem)
_hotplug_memory(memory)
else:
_hotplug_maxmem(maxmem)
if description != _SENTINEL:
_hotplug_metadata(description,
libvirt.VIR_DOMAIN_METADATA_DESCRIPTION)
if title != _SENTINEL:
_hotplug_metadata(title, libvirt.VIR_DOMAIN_METADATA_TITLE)
if device != _SENTINEL:
self._update_device(device)
########################
# Libvirt API wrappers #
########################
def _conn_tick_poll_param(self):
return "pollvm"
def class_name(self):
return "domain"
def _define(self, xml):
self.conn.define_domain(xml)
def _XMLDesc(self, flags):
return self._backend.XMLDesc(flags)
def _get_backend_status(self):
return self._backend.info()[0]
def get_autostart(self):
if self._autostart is None:
self._autostart = self._backend.autostart()
return self._autostart
def set_autostart(self, val):
self._backend.setAutostart(val)
# Recache value
self._autostart = None
self.get_autostart()
def job_info(self):
return self._backend.jobInfo()
def abort_job(self):
self._backend.abortJob()
def open_console(self, devname, stream, flags=0):
return self._backend.openConsole(devname, stream, flags)
def open_graphics_fd(self):
flags = 0
# Ugly workaround for VNC bug where the display cannot be opened
# if the listen type is "none". When this gets fixed in QEMU
# we should skip auth only for broken QEMUs.
graphics = self.get_graphics_devices()[0]
if (graphics.type == "vnc" and
graphics.get_first_listen_type() == "none"):
flags = libvirt.VIR_DOMAIN_OPEN_GRAPHICS_SKIPAUTH
return self._backend.openGraphicsFD(0, flags)
def refresh_snapshots(self):
self._snapshot_list = None
def list_snapshots(self):
if self._snapshot_list is None:
newlist = []
for rawsnap in self._backend.listAllSnapshots():
obj = vmmDomainSnapshot(self.conn, rawsnap)
obj.init_libvirt_state()
newlist.append(obj)
self._snapshot_list = newlist
return self._snapshot_list[:]
@vmmLibvirtObject.lifecycle_action
def revert_to_snapshot(self, snap):
self._backend.revertToSnapshot(snap.get_backend())
def create_snapshot(self, xml, redefine=False):
flags = 0
if redefine:
flags = (flags | libvirt.VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE)
if not redefine:
logging.debug("Creating snapshot flags=%s xml=\n%s", flags, xml)
self._backend.snapshotCreateXML(xml, flags)
########################
# XML Parsing routines #
########################
def is_container(self):
return self.get_xmlobj().os.is_container()
def is_xenpv(self):
return self.get_xmlobj().os.is_xenpv()
def is_hvm(self):
return self.get_xmlobj().os.is_hvm()
def get_uuid(self):
if self._uuid is None:
self._uuid = self._backend.UUIDString()
return self._uuid
def get_abi_type(self):
return self.get_xmlobj().os.os_type
def get_hv_type(self):
return self.get_xmlobj().type
def get_pretty_hv_type(self):
return self.conn.pretty_hv(self.get_abi_type(), self.get_hv_type())
def get_arch(self):
return self.get_xmlobj().os.arch
def get_init(self):
import pipes
init = self.get_xmlobj().os.init
initargs = " ".join(
[pipes.quote(i.val) for i in self.get_xmlobj().os.initargs])
return init, initargs
def get_emulator(self):
return self.get_xmlobj().emulator
def get_machtype(self):
return self.get_xmlobj().os.machine
def get_idmap(self):
return self.get_xmlobj().idmap
def get_name_or_title(self):
title = self.get_title()
if title:
return title
return self.get_name()
def get_title(self):
return self.get_xmlobj().title
def get_description(self):
return self.get_xmlobj().description
def get_memory(self):
return int(self.get_xmlobj().memory)
def maximum_memory(self):
return int(self.get_xmlobj().maxmemory)
def vcpu_count(self):
return int(self.get_xmlobj().curvcpus or self.get_xmlobj().vcpus)
def vcpu_max_count(self):
return int(self.get_xmlobj().vcpus)
def get_cpu_config(self):
return self.get_xmlobj().cpu
def _convert_old_boot_order(self):
boot_order = self._get_old_boot_order()
ret = []
disks = self.get_disk_devices()
nets = self.get_network_devices()
for b in boot_order:
if b == "network":
ret += [n.vmmidstr for n in nets]
if b == "hd":
ret += [d.vmmidstr for d in disks if
d.device not in ["cdrom", "floppy"]]
if b == "cdrom":
ret += [d.vmmidstr for d in disks if d.device == "cdrom"]
if b == "floppy":
ret += [d.vmmidstr for d in disks if d.device == "floppy"]
return ret
def _get_device_boot_order(self):
devs = self.get_bootable_devices()
order = []
for dev in devs:
if not dev.boot.order:
continue
order.append((dev.vmmidstr, dev.boot.order))
if not order:
# No devices individually marked bootable, convert traditional
# boot XML to fine grained, for the UI.
return self._convert_old_boot_order()
order.sort(key=lambda p: p[1])
return [p[0] for p in order]
def _get_old_boot_order(self):
return self.get_xmlobj().os.bootorder
def get_boot_order(self):
if self.can_use_device_boot_order():
return self._get_device_boot_order()
return self._get_old_boot_order()
def get_boot_menu(self):
guest = self.get_xmlobj()
return bool(guest.os.enable_bootmenu)
def get_boot_kernel_info(self):
guest = self.get_xmlobj()
return (guest.os.kernel, guest.os.initrd,
guest.os.dtb, guest.os.kernel_args)
# XML Device listing
def get_serial_devs(self):
devs = self.get_char_devices()
devlist = []
devlist += [x for x in devs if x.virtual_device_type == "serial"]
devlist += [x for x in devs if x.virtual_device_type == "console"]
return devlist
def _build_device_list(self, device_type,
refresh_if_nec=True, inactive=False):
guest = self.get_xmlobj(refresh_if_nec=refresh_if_nec,
inactive=inactive)
devs = guest.get_devices(device_type)
for idx, dev in enumerate(devs):
dev.vmmindex = idx
dev.vmmidstr = dev.virtual_device_type + ("%.3d" % idx)
return devs
def get_network_devices(self, refresh_if_nec=True):
return self._build_device_list("interface", refresh_if_nec)
def get_video_devices(self):
return self._build_device_list("video")
def get_hostdev_devices(self):
return self._build_device_list("hostdev")
def get_watchdog_devices(self):
return self._build_device_list("watchdog")
def get_input_devices(self):
return self._build_device_list("input")
def get_graphics_devices(self):
return self._build_device_list("graphics")
def get_sound_devices(self):
return self._build_device_list("sound")
def get_controller_devices(self):
return self._build_device_list("controller")
def get_filesystem_devices(self):
return self._build_device_list("filesystem")
def get_smartcard_devices(self):
return self._build_device_list("smartcard")
def get_redirdev_devices(self):
return self._build_device_list("redirdev")
def get_tpm_devices(self):
return self._build_device_list("tpm")
def get_rng_devices(self):
return self._build_device_list("rng")
def get_panic_devices(self):
return self._build_device_list("panic")
def get_disk_devices(self, refresh_if_nec=True, inactive=False):
devs = self._build_device_list("disk", refresh_if_nec, inactive)
# Iterate through all disks and calculate what number they are
# HACK: We are making a variable in VirtualDisk to store the index
idx_mapping = {}
for dev in devs:
devtype = dev.device
bus = dev.bus
key = devtype + (bus or "")
if key not in idx_mapping:
idx_mapping[key] = 1
dev.disk_bus_index = idx_mapping[key]
idx_mapping[key] += 1
return devs
def get_char_devices(self):
devs = []
serials = self._build_device_list("serial")
parallels = self._build_device_list("parallel")
consoles = self._build_device_list("console")
channels = self._build_device_list("channel")
for devicelist in [serials, parallels, consoles, channels]:
devs.extend(devicelist)
# Don't display <console> if it's just a duplicate of <serial>
if (len(consoles) > 0 and len(serials) > 0):
con = consoles[0]
ser = serials[0]
if (con.type == ser.type and
con.target_type is None or con.target_type == "serial"):
ser.virtmanager_console_dup = con
devs.remove(con)
return devs
def can_use_device_boot_order(self):
# Return 'True' if guest can use new style boot device ordering
return self.conn.check_support(
self.conn.SUPPORT_CONN_DEVICE_BOOTORDER)
def get_bootable_devices(self):
devs = self.get_disk_devices()
devs += self.get_network_devices()
devs += self.get_hostdev_devices()
# redirdev can also be marked bootable, but it should be rarely
# used and clutters the UI
return devs
############################
# Domain lifecycle methods #
############################
# All these methods are usually run asynchronously from threads, so
# let's be extra careful and have anything which might touch UI
# or GObject.props invoked in an idle callback
@vmmLibvirtObject.lifecycle_action
def shutdown(self):
self._install_abort = True
self._backend.shutdown()
@vmmLibvirtObject.lifecycle_action
def reboot(self):
self._install_abort = True
self._backend.reboot(0)
@vmmLibvirtObject.lifecycle_action
def destroy(self):
self._install_abort = True
self._backend.destroy()
@vmmLibvirtObject.lifecycle_action
def reset(self):
self._install_abort = True
self._backend.reset(0)
@vmmLibvirtObject.lifecycle_action
def startup(self):
if self.get_cloning():
raise RuntimeError(_("Cannot start guest while cloning "
"operation in progress"))
pre_startup_ret = []
self.emit("pre-startup", pre_startup_ret)
for error in pre_startup_ret:
raise RuntimeError(error)
self._backend.create()
@vmmLibvirtObject.lifecycle_action
def suspend(self):
self._backend.suspend()
@vmmLibvirtObject.lifecycle_action
def delete(self, force=True):
"""
@force: True if we are deleting domain, False if we are renaming domain
If the domain is renamed we need to keep the nvram file.
"""
flags = 0
if force:
flags |= getattr(libvirt,
"VIR_DOMAIN_UNDEFINE_SNAPSHOTS_METADATA", 0)
flags |= getattr(libvirt, "VIR_DOMAIN_UNDEFINE_MANAGED_SAVE", 0)
if self.has_nvram():
flags |= getattr(libvirt, "VIR_DOMAIN_UNDEFINE_NVRAM", 0)
else:
if self.has_nvram():
flags |= getattr(libvirt, "VIR_DOMAIN_UNDEFINE_KEEP_NVRAM", 0)
try:
self._backend.undefineFlags(flags)
except libvirt.libvirtError:
logging.exception("libvirt undefineFlags failed, "
"falling back to old style")
self._backend.undefine()
@vmmLibvirtObject.lifecycle_action
def resume(self):
if self.get_cloning():
raise RuntimeError(_("Cannot resume guest while cloning "
"operation in progress"))
self._backend.resume()
@vmmLibvirtObject.lifecycle_action
def save(self, meter=None):
self._install_abort = True
if meter:
start_job_progress_thread(self, meter, _("Saving domain to disk"))
self._backend.managedSave(0)
def has_managed_save(self):
if not self.managedsave_supported:
return False
if self._has_managed_save is None:
try:
self._has_managed_save = self._backend.hasManagedSaveImage(0)
except libvirt.libvirtError as e:
if not util.exception_is_libvirt_error(e, "VIR_ERR_NO_DOMAIN"):
raise
return False
return self._has_managed_save
def remove_saved_image(self):
if not self.has_managed_save():
return
self._backend.managedSaveRemove(0)
self._has_managed_save = None
def migrate(self, destconn, interface=None,
secure=False, unsafe=False, temporary=False, meter=None):
self._install_abort = True
flags = 0
flags |= libvirt.VIR_MIGRATE_LIVE
if not temporary:
flags |= libvirt.VIR_MIGRATE_PERSIST_DEST
flags |= libvirt.VIR_MIGRATE_UNDEFINE_SOURCE
if secure:
flags |= libvirt.VIR_MIGRATE_PEER2PEER
flags |= libvirt.VIR_MIGRATE_TUNNELLED
if unsafe:
flags |= libvirt.VIR_MIGRATE_UNSAFE
libvirt_destconn = destconn.get_backend().get_conn_for_api_arg()
logging.debug("Migrating: conn=%s flags=%s uri=%s secure=%s "
"unsafe=%s temporary=%s",
destconn, flags, interface, secure, unsafe, temporary)
if meter:
start_job_progress_thread(self, meter, _("Migrating domain"))
params = {}
if interface:
params[libvirt.VIR_MIGRATE_PARAM_URI] = interface
self._backend.migrate3(libvirt_destconn, params, flags)
# Don't schedule any conn update, migrate dialog handles it for us
#################
# Stats helpers #
#################
def _sample_cpu_stats(self, info, now):
if not self._enable_cpu_stats:
return 0, 0, 0, 0
if not info:
info = self._backend.info()
prevCpuTime = 0
prevTimestamp = 0
cpuTime = 0
cpuTimeAbs = 0
pcentHostCpu = 0
pcentGuestCpu = 0
if len(self._stats) > 0:
prevTimestamp = self._stats[0]["timestamp"]
prevCpuTime = self._stats[0]["cpuTimeAbs"]
if not (info[0] in [libvirt.VIR_DOMAIN_SHUTOFF,
libvirt.VIR_DOMAIN_CRASHED]):
guestcpus = info[3]
cpuTime = info[4] - prevCpuTime
cpuTimeAbs = info[4]
hostcpus = self.conn.host_active_processor_count()
pcentbase = (((cpuTime) * 100.0) /
((now - prevTimestamp) * 1000.0 * 1000.0 * 1000.0))
pcentHostCpu = pcentbase / hostcpus
# Under RHEL-5.9 using a XEN HV guestcpus can be 0 during shutdown
# so play safe and check it.
pcentGuestCpu = guestcpus > 0 and pcentbase / guestcpus or 0
pcentHostCpu = max(0.0, min(100.0, pcentHostCpu))
pcentGuestCpu = max(0.0, min(100.0, pcentGuestCpu))
return cpuTime, cpuTimeAbs, pcentHostCpu, pcentGuestCpu
def _get_cur_rate(self, what):
if len(self._stats) > 1:
ret = (float(self._stats[0][what] -
self._stats[1][what]) /
float(self._stats[0]["timestamp"] -
self._stats[1]["timestamp"]))
else:
ret = 0.0
return max(ret, 0, 0) # avoid negative values at poweroff
def _set_max_rate(self, record, what):
if record[what] > self._stats_rates[what]:
self._stats_rates[what] = record[what]
def _get_max_rate(self, name1, name2):
return float(max(self._stats_rates[name1], self._stats_rates[name2]))
def _get_record_helper(self, record_name):
if len(self._stats) == 0:
return 0
return self._stats[0][record_name]
def _vector_helper(self, record_name, limit, ceil=100.0):
vector = []
statslen = self.config.get_stats_history_length() + 1
if limit is not None:
statslen = min(statslen, limit)
for i in range(statslen):
if i < len(self._stats):
vector.append(self._stats[i][record_name] / ceil)
else:
vector.append(0)
return vector
def _in_out_vector_helper(self, name1, name2, limit, ceil):
if ceil is None:
ceil = self._get_max_rate(name1, name2)
return (self._vector_helper(name1, limit, ceil=ceil),
self._vector_helper(name2, limit, ceil=ceil))
###################
# Stats accessors #
###################
def stats_memory(self):
return self._get_record_helper("curmem")
def cpu_time(self):
return self._get_record_helper("cpuTime")
def host_cpu_time_percentage(self):
return self._get_record_helper("cpuHostPercent")
def guest_cpu_time_percentage(self):
return self._get_record_helper("cpuGuestPercent")
def network_rx_rate(self):
return self._get_record_helper("netRxRate")
def network_tx_rate(self):
return self._get_record_helper("netTxRate")
def disk_read_rate(self):
return self._get_record_helper("diskRdRate")
def disk_write_rate(self):
return self._get_record_helper("diskWrRate")
def network_traffic_rate(self):
return self.network_tx_rate() + self.network_rx_rate()
def network_traffic_max_rate(self):
return self._get_max_rate("netRxRate", "netTxRate")
def disk_io_rate(self):
return self.disk_read_rate() + self.disk_write_rate()
def disk_io_max_rate(self):
return self._get_max_rate("diskRdRate", "diskWrRate")
def host_cpu_time_vector(self, limit=None):
return self._vector_helper("cpuHostPercent", limit)
def guest_cpu_time_vector(self, limit=None):
return self._vector_helper("cpuGuestPercent", limit)
def stats_memory_vector(self, limit=None):
return self._vector_helper("currMemPercent", limit)
def network_traffic_vectors(self, limit=None, ceil=None):
return self._in_out_vector_helper(
"netRxRate", "netTxRate", limit, ceil)
def disk_io_vectors(self, limit=None, ceil=None):
return self._in_out_vector_helper(
"diskRdRate", "diskWrRate", limit, ceil)
###################
# Status helpers ##
###################
def _normalize_status(self, status):
if status == libvirt.VIR_DOMAIN_NOSTATE:
return libvirt.VIR_DOMAIN_RUNNING
elif status == libvirt.VIR_DOMAIN_BLOCKED:
return libvirt.VIR_DOMAIN_RUNNING
return status
def is_active(self):
return not self.is_shutoff()
def is_shutoff(self):
return self.status() == libvirt.VIR_DOMAIN_SHUTOFF
def is_crashed(self):
return self.status() == libvirt.VIR_DOMAIN_CRASHED
def is_stoppable(self):
return self.status() in [libvirt.VIR_DOMAIN_RUNNING,
libvirt.VIR_DOMAIN_PAUSED,
libvirt.VIR_DOMAIN_CRASHED,
libvirt.VIR_DOMAIN_PMSUSPENDED]
def is_destroyable(self):
return (self.is_stoppable() or
self.status() in [libvirt.VIR_DOMAIN_CRASHED])
def is_runable(self):
return self.is_shutoff()
def is_pauseable(self):
return self.status() in [libvirt.VIR_DOMAIN_RUNNING]
def is_unpauseable(self):
return self.status() in [libvirt.VIR_DOMAIN_PAUSED]
def is_paused(self):
return self.status() in [libvirt.VIR_DOMAIN_PAUSED]
def is_clonable(self):
return self.status() in [libvirt.VIR_DOMAIN_SHUTOFF,
libvirt.VIR_DOMAIN_PAUSED,
libvirt.VIR_DOMAIN_PMSUSPENDED]
def run_status(self):
return self.pretty_run_status(self.status(), self.has_managed_save())
def run_status_reason(self):
return self.pretty_status_reason(self.status(), self.status_reason())
def run_status_icon_name(self):
status = self.status()
if status not in vm_status_icons:
logging.debug("Unknown status %s, using NOSTATE", status)
status = libvirt.VIR_DOMAIN_NOSTATE
return vm_status_icons[status]
def inspection_data_updated(self):
self.idle_emit("inspection-changed")
##################
# config helpers #
##################
def on_console_scaling_changed(self, *args, **kwargs):
return self.config.listen_pervm(self.get_uuid(), "/scaling",
*args, **kwargs)
def set_console_scaling(self, value):
self.config.set_pervm(self.get_uuid(), "/scaling", value)
def get_console_scaling(self):
ret = self.config.get_pervm(self.get_uuid(), "/scaling")
if ret == -1:
return self.config.get_console_scaling()
return ret
def on_console_resizeguest_changed(self, *args, **kwargs):
return self.config.listen_pervm(self.get_uuid(), "/resize-guest",
*args, **kwargs)
def set_console_resizeguest(self, value):
self.config.set_pervm(self.get_uuid(), "/resize-guest", value)
def get_console_resizeguest(self):
ret = self.config.get_pervm(self.get_uuid(), "/resize-guest")
if ret == -1:
return self.config.get_console_resizeguest()
return ret
def set_details_window_size(self, w, h):
self.config.set_pervm(self.get_uuid(), "/vm-window-size", (w, h))
def get_details_window_size(self):
ret = self.config.get_pervm(self.get_uuid(), "/vm-window-size")
return ret
def get_console_password(self):
return self.config.get_pervm(self.get_uuid(), "/console-password")
def set_console_password(self, username, keyid):
return self.config.set_pervm(self.get_uuid(), "/console-password",
(username, keyid))
def del_console_password(self):
return self.config.set_pervm(self.get_uuid(), "/console-password",
("", -1))
def _on_config_sample_network_traffic_changed(self, ignore=None):
self._enable_net_poll = self.config.get_stats_enable_net_poll()
def _on_config_sample_disk_io_changed(self, ignore=None):
self._enable_disk_poll = self.config.get_stats_enable_disk_poll()
def _on_config_sample_mem_stats_changed(self, ignore=None):
self._enable_mem_stats = self.config.get_stats_enable_memory_poll()
def _on_config_sample_cpu_stats_changed(self, ignore=None):
self._enable_cpu_stats = self.config.get_stats_enable_cpu_poll()
def get_cache_dir(self):
ret = os.path.join(self.conn.get_cache_dir(), self.get_uuid())
if not os.path.exists(ret):
os.makedirs(ret, 0o755)
return ret
###################
# Polling helpers #
###################
def _sample_network_traffic(self):
rx = 0
tx = 0
if (not self._stats_net_supported or
not self._enable_net_poll or
not self.is_active()):
self._stats_net_skip = []
return rx, tx
for netdev in self.get_network_devices(refresh_if_nec=False):
dev = netdev.target_dev
if not dev:
continue
if dev in self._stats_net_skip:
continue
try:
io = self._backend.interfaceStats(dev)
if io:
rx += io[0]
tx += io[4]
except libvirt.libvirtError as err:
if util.is_error_nosupport(err):
logging.debug("Net stats not supported: %s", err)
self._stats_net_supported = False
else:
logging.error("Error reading net stats for "
"'%s' dev '%s': %s",
self.get_name(), dev, err)
if self.is_active():
logging.debug("Adding %s to skip list", dev)
self._stats_net_skip.append(dev)
else:
logging.debug("Aren't running, don't add to skiplist")
return rx, tx
def _sample_disk_io(self):
rd = 0
wr = 0
if (not self._stats_disk_supported or
not self._enable_disk_poll or
not self.is_active()):
self._stats_disk_skip = []
return rd, wr
# Some drivers support this method for getting all usage at once
if not self._summary_disk_stats_skip:
try:
io = self._backend.blockStats('')
if io:
rd = io[1]
wr = io[3]
return rd, wr
except libvirt.libvirtError:
self._summary_disk_stats_skip = True
# did not work, iterate over all disks
for disk in self.get_disk_devices(refresh_if_nec=False):
dev = disk.target
if not dev:
continue
if dev in self._stats_disk_skip:
continue
try:
io = self._backend.blockStats(dev)
if io:
rd += io[1]
wr += io[3]
except libvirt.libvirtError as err:
if util.is_error_nosupport(err):
logging.debug("Disk stats not supported: %s", err)
self._stats_disk_supported = False
else:
logging.error("Error reading disk stats for "
"'%s' dev '%s': %s",
self.get_name(), dev, err)
if self.is_active():
logging.debug("Adding %s to skip list", dev)
self._stats_disk_skip.append(dev)
else:
logging.debug("Aren't running, don't add to skiplist")
return rd, wr
def _set_mem_stats_period(self):
# QEMU requires we explicitly enable memory stats polling per VM
# if we wan't fine grained memory stats
if not self.conn.check_support(
self.conn.SUPPORT_CONN_MEM_STATS_PERIOD):
return
# Only works for virtio balloon
if not any([b for b in self.get_xmlobj().get_devices("memballoon") if
b.model == "virtio"]):
return
try:
secs = 5
self._backend.setMemoryStatsPeriod(secs,
libvirt.VIR_DOMAIN_AFFECT_LIVE)
except Exception as e:
logging.debug("Error setting memstats period: %s", e)
def _sample_mem_stats(self):
if (not self.mem_stats_supported or
not self._enable_mem_stats or
not self.is_active()):
self._mem_stats_period_is_set = False
return 0, 0
if self._mem_stats_period_is_set is False:
self._set_mem_stats_period()
self._mem_stats_period_is_set = True
curmem = 0
totalmem = 1
try:
stats = self._backend.memoryStats()
totalmem = stats.get("actual", 1)
curmem = stats.get("rss", 0)
if "unused" in stats:
curmem = max(0, totalmem - stats.get("unused", totalmem))
except libvirt.libvirtError as err:
logging.error("Error reading mem stats: %s", err)
pcentCurrMem = (curmem / float(totalmem)) * 100
pcentCurrMem = max(0.0, min(pcentCurrMem, 100.0))
return pcentCurrMem, curmem
def tick(self, stats_update=True):
if (not self._using_events() and
not stats_update):
return
info = []
dosignal = False
if not self._using_events():
# For domains it's pretty important that we are always using
# the latest XML, but other objects probably don't want to do
# this since it could be a performance hit.
self._invalidate_xml()
info = self._backend.info()
dosignal = self._refresh_status(newstatus=info[0], cansignal=False)
if stats_update:
self._tick_stats(info)
if dosignal:
self.idle_emit("state-changed")
if stats_update:
self.idle_emit("resources-sampled")
def _tick_stats(self, info):
expected = self.config.get_stats_history_length()
current = len(self._stats)
if current > expected:
del self._stats[expected:current]
now = time.time()
(cpuTime, cpuTimeAbs,
pcentHostCpu, pcentGuestCpu) = self._sample_cpu_stats(info, now)
pcentCurrMem, curmem = self._sample_mem_stats()
rdBytes, wrBytes = self._sample_disk_io()
rxBytes, txBytes = self._sample_network_traffic()
newStats = {
"timestamp": now,
"cpuTime": cpuTime,
"cpuTimeAbs": cpuTimeAbs,
"cpuHostPercent": pcentHostCpu,
"cpuGuestPercent": pcentGuestCpu,
"curmem": curmem,
"currMemPercent": pcentCurrMem,
"diskRdKiB": rdBytes / 1024,
"diskWrKiB": wrBytes / 1024,
"netRxKiB": rxBytes / 1024,
"netTxKiB": txBytes / 1024,
}
for r in ["diskRd", "diskWr", "netRx", "netTx"]:
newStats[r + "Rate"] = self._get_cur_rate(r + "KiB")
self._set_max_rate(newStats, r + "Rate")
self._stats.insert(0, newStats)
########################
# Libvirt domain class #
########################
class vmmDomainVirtinst(vmmDomain):
"""
Domain object backed by a virtinst Guest object.
Used for launching a details window for customizing a VM before install.
"""
def __init__(self, conn, backend, key):
vmmDomain.__init__(self, conn, backend, key)
self._orig_xml = None
# This encodes all the virtinst defaults up front, so the customize
# dialog actually shows disk buses, cache values, default devices, etc.
backend.set_install_defaults()
self.title_supported = True
self._refresh_status()
logging.debug("%s initialized with XML=\n%s", self, self._XMLDesc(0))
def get_name(self):
return self._backend.name
def get_uuid(self):
return self._backend.uuid
def get_id(self):
return -1
def has_managed_save(self):
return False
def snapshots_supported(self):
return False
def get_autostart(self):
return self._backend.autostart
def set_autostart(self, val):
self._backend.autostart = bool(val)
self.emit("state-changed")
def _using_events(self):
return False
def _get_backend_status(self):
return libvirt.VIR_DOMAIN_SHUTOFF
def _init_libvirt_state(self):
pass
def tick(self, stats_update=True):
ignore = stats_update
################
# XML handling #
################
def define_name(self, newname):
# We need to overwrite this, since the implementation for libvirt
# needs to do some crazy stuff.
xmlobj = self._make_xmlobj_to_define()
xmlobj.name = str(newname)
self._redefine_xmlobj(xmlobj)
def _XMLDesc(self, flags):
ignore = flags
return self._backend.get_xml_config()
def _define(self, xml):
ignore = xml
self.emit("state-changed")
def _invalidate_xml(self):
vmmDomain._invalidate_xml(self)
self._orig_xml = None
def _make_xmlobj_to_define(self):
if not self._orig_xml:
self._orig_xml = self._backend.get_xml_config()
return self._backend
def _redefine_xmlobj(self, xmlobj, origxml=None):
vmmDomain._redefine_xmlobj(self, xmlobj, origxml=self._orig_xml)
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