mirror of
https://github.com/retspen/webvirtcloud
synced 2026-11-08 11:16:47 +00:00
57cf49262a
Clone: - only shut-off VMs are cloned, as the UI already required: a running guest keeps writing while its disks are copied; the definition comes from the persistent XML; - MAC addresses and disk destinations are checked before anything is allocated; - every volume the clone creates (NVRAM and disks) is tracked; if a later copy or the definition fails, only those are deleted, and any that cannot be deleted are named in the error. Before, a failed clone left its earlier copies behind. libvirtError(msg) reports the thread's last libvirt error instead of msg when there is one, so WebVirtCloud's own errors could show an earlier, unrelated failure. util.OperationError, a libvirtError subclass that keeps its message, replaces those raises in vrtManager, instances and nwfilters; 'except libvirtError' still catches it.
1958 lines
76 KiB
Python
1958 lines
76 KiB
Python
import contextlib
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import json
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import logging
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import os.path
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import string
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import time
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logger = logging.getLogger(__name__)
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try:
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from libvirt import (
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VIR_DOMAIN_AFFECT_CONFIG,
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VIR_DOMAIN_AFFECT_LIVE,
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VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_AGENT,
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VIR_DOMAIN_RUNNING,
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VIR_DOMAIN_XML_SECURE,
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VIR_DOMAIN_XML_INACTIVE,
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VIR_DOMAIN_BLOCK_RESIZE_BYTES,
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VIR_STORAGE_VOL_FILE,
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VIR_MIGRATE_AUTO_CONVERGE,
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VIR_MIGRATE_COMPRESSED,
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VIR_MIGRATE_LIVE,
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VIR_MIGRATE_OFFLINE,
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VIR_MIGRATE_PERSIST_DEST,
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VIR_MIGRATE_POSTCOPY,
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VIR_MIGRATE_UNDEFINE_SOURCE,
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VIR_MIGRATE_UNSAFE,
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VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY,
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VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY,
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VIR_DOMAIN_SNAPSHOT_LIST_INTERNAL,
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VIR_DOMAIN_SNAPSHOT_LIST_EXTERNAL,
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VIR_DOMAIN_BLOCK_COMMIT_DELETE,
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VIR_DOMAIN_BLOCK_COMMIT_ACTIVE,
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VIR_DOMAIN_BLOCK_JOB_ABORT_PIVOT,
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VIR_DOMAIN_START_PAUSED,
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libvirtError,
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)
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from libvirt_qemu import VIR_DOMAIN_QEMU_AGENT_COMMAND_DEFAULT, qemuAgentCommand
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except Exception:
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from libvirt import libvirtError, VIR_DOMAIN_XML_SECURE, VIR_DOMAIN_XML_INACTIVE, VIR_MIGRATE_LIVE
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from collections import OrderedDict
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from datetime import datetime
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from xml.etree import ElementTree
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from lxml import etree
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from vrtManager import util
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from vrtManager.connection import wvmConnect
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from vrtManager.storage import wvmStorage, wvmStorages
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# Edits that redefine the domain start from this: the persistent definition,
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# with secrets. Live XML would drop pending changes, non-secure XML the VNC
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# password (R-01, R-02).
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PERSISTENT_XML = VIR_DOMAIN_XML_INACTIVE | VIR_DOMAIN_XML_SECURE
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class wvmInstances(wvmConnect):
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def get_instance_status(self, name):
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inst = self.get_instance(name)
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return inst.info()[0]
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def get_instance_memory(self, name):
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inst = self.get_instance(name)
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mem = util.get_xml_path(inst.XMLDesc(0), "/domain/currentMemory")
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return int(mem) // 1024
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def get_instance_vcpu(self, name):
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inst = self.get_instance(name)
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cur_vcpu = util.get_xml_path(inst.XMLDesc(0), "/domain/vcpu/@current")
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return cur_vcpu or util.get_xml_path(inst.XMLDesc(0), "/domain/vcpu")
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def get_instance_managed_save_image(self, name):
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inst = self.get_instance(name)
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return inst.hasManagedSaveImage(0)
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def get_uuid(self, name):
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inst = self.get_instance(name)
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return inst.UUIDString()
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def start(self, name):
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dom = self.get_instance(name)
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dom.create()
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def shutdown(self, name):
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dom = self.get_instance(name)
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dom.shutdown()
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def force_shutdown(self, name):
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dom = self.get_instance(name)
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dom.destroy()
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def managedsave(self, name):
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dom = self.get_instance(name)
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dom.managedSave(0)
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def managed_save_remove(self, name):
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dom = self.get_instance(name)
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dom.managedSaveRemove(0)
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def suspend(self, name):
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dom = self.get_instance(name)
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dom.suspend()
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def resume(self, name):
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dom = self.get_instance(name)
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dom.resume()
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def moveto(
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self,
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conn,
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name,
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live,
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unsafe,
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undefine,
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offline,
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autoconverge=False,
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compress=False,
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postcopy=False,
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):
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flags = VIR_MIGRATE_PERSIST_DEST
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if live and conn.get_status() != 5:
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flags |= VIR_MIGRATE_LIVE
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if unsafe and conn.get_status() == 1:
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flags |= VIR_MIGRATE_UNSAFE
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if offline and conn.get_status() == 5:
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flags |= VIR_MIGRATE_OFFLINE
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if not offline and autoconverge:
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flags |= VIR_MIGRATE_AUTO_CONVERGE
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if not offline and compress and conn.get_status() == 1:
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flags |= VIR_MIGRATE_COMPRESSED
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if not offline and postcopy and conn.get_status() == 1:
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flags |= VIR_MIGRATE_POSTCOPY
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if undefine:
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flags |= VIR_MIGRATE_UNDEFINE_SOURCE
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dom = conn.instance
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dom_arch = conn.get_arch()
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dom_emulator = conn.get_dom_emulator()
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if dom_emulator != self.get_emulator(dom_arch):
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raise util.OperationError(
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"Destination host emulator is different. Cannot be migrated"
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)
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dom.migrate(self.wvm, flags, None, None, 0)
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def graphics_type(self, name):
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inst = self.get_instance(name)
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console_type = util.get_xml_path(
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inst.XMLDesc(0), "/domain/devices/graphics/@type"
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)
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return "None" if console_type is None else console_type
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def graphics_listen(self, name):
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inst = self.get_instance(name)
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listener_addr = util.get_xml_path(
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inst.XMLDesc(0), "/domain/devices/graphics/@listen"
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)
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if listener_addr is None:
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listener_addr = util.get_xml_path(
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inst.XMLDesc(0), "/domain/devices/graphics/listen/@address"
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)
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return "None" if listener_addr is None else listener_addr
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def graphics_port(self, name):
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inst = self.get_instance(name)
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console_port = util.get_xml_path(
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inst.XMLDesc(0), "/domain/devices/graphics/@port"
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)
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return "None" if console_port is None else console_port
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def domain_name(self, name):
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inst = self.get_instance(name)
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domname = util.get_xml_path(inst.XMLDesc(0), "/domain/name")
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return "NoName" if domname is None else domname
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def graphics_passwd(self, name):
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inst = self.get_instance(name)
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password = util.get_xml_path(
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inst.XMLDesc(VIR_DOMAIN_XML_SECURE), "/domain/devices/graphics/@passwd"
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)
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return "None" if password is None else password
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class wvmInstance(wvmConnect):
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def __init__(self, host, login, passwd, conn, vname, uuid=None):
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wvmConnect.__init__(self, host, login, passwd, conn)
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self._ip_cache = None
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# A known VM is found by UUID: a name can be renamed or swapped
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# outside WebVirtCloud. No fallback to the name.
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self.instance = self.wvm.lookupByUUIDString(uuid) if uuid else self.get_instance(vname)
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def osinfo(self):
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info_results = qemuAgentCommand(
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self.instance,
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'{"execute":"guest-get-osinfo"}',
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VIR_DOMAIN_QEMU_AGENT_COMMAND_DEFAULT,
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0,
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)
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timezone_results = qemuAgentCommand(
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self.instance,
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'{"execute":"guest-get-timezone"}',
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VIR_DOMAIN_QEMU_AGENT_COMMAND_DEFAULT,
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0,
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)
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hostname_results = qemuAgentCommand(
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self.instance,
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'{"execute":"guest-get-host-name"}',
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VIR_DOMAIN_QEMU_AGENT_COMMAND_DEFAULT,
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0,
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)
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info_results = json.loads(info_results).get("return")
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timezone_results = json.loads(timezone_results).get("return")
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hostname_results = json.loads(hostname_results).get("return")
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info_results.update(timezone_results)
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info_results.update(hostname_results)
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return info_results
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def start(self, flags=0):
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self.instance.createWithFlags(flags)
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def shutdown(self):
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self.instance.shutdown()
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def force_shutdown(self):
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self.instance.destroy()
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def managedsave(self):
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self.instance.managedSave(0)
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def managed_save_remove(self):
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self.instance.managedSaveRemove(0)
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def suspend(self):
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self.instance.suspend()
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def resume(self):
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self.instance.resume()
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def delete(self, flags=0):
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self.instance.undefineFlags(flags)
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def _XMLDesc(self, flag):
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return self.instance.XMLDesc(flag)
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def _defineXML(self, xml):
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return self.wvm.defineXML(xml)
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def get_status(self):
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"""
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VIR_DOMAIN_NOSTATE = 0
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VIR_DOMAIN_RUNNING = 1
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VIR_DOMAIN_PAUSED = 3
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VIR_DOMAIN_SHUTOFF = 5
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"""
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return self.instance.info()[0]
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def get_autostart(self):
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return self.instance.autostart()
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def set_autostart(self, flag):
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return self.instance.setAutostart(flag)
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def get_uuid(self):
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return self.instance.UUIDString()
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def get_vcpu(self):
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vcpu = util.get_xml_path(self._XMLDesc(0), "/domain/vcpu")
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return int(vcpu)
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def get_cur_vcpu(self):
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cur_vcpu = util.get_xml_path(self._XMLDesc(0), "/domain/vcpu/@current")
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return int(cur_vcpu) if cur_vcpu else self.get_vcpu()
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def get_vcpu_mode(self):
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return util.get_xml_path(self._XMLDesc(0), "/domain/cpu/@current")
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def get_arch(self):
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return util.get_xml_path(self._XMLDesc(0), "/domain/os/type/@arch")
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def get_machine_type(self):
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return util.get_xml_path(self._XMLDesc(0), "/domain/os/type/@machine")
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def get_dom_emulator(self):
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return util.get_xml_path(self._XMLDesc(0), "/domain/devices/emulator")
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def get_nvram(self):
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return util.get_xml_path(self._XMLDesc(0), "/domain/os/nvram")
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def get_loader(self):
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xml = self._XMLDesc(0)
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loader = util.get_xml_path(xml, "/domain/os/loader")
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loader_type = util.get_xml_path(xml, "/domain/os/loader/@type")
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readonly = util.get_xml_path(xml, "/domain/os/loader/@readonly")
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return {"loader": loader, "type": loader_type, "readonly": readonly}
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def get_vcpus(self):
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vcpus = OrderedDict()
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tree = etree.fromstring(self._XMLDesc(0))
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for vcpu in tree.xpath("/domain/vcpus/vcpu"):
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vcpu_id = vcpu.get("id")
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enabled = vcpu.get("enabled")
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hotplug = vcpu.get("hotpluggable")
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order = vcpu.get("order")
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vcpus[vcpu_id] = {
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"enabled": enabled,
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"hotpluggable": hotplug,
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"order": order,
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}
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return vcpus
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def get_memory(self):
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mem = util.get_xml_path(self._XMLDesc(0), "/domain/memory")
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return int(mem) // 1024
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def get_cur_memory(self):
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mem = util.get_xml_path(self._XMLDesc(0), "/domain/currentMemory")
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return int(mem) // 1024
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def get_title(self):
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title = util.get_xml_path(self._XMLDesc(0), "/domain/title")
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return title or ""
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def get_filterrefs(self):
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def filterrefs(ctx):
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result = []
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for net in ctx.xpath("/domain/devices/interface"):
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filterref = net.xpath("filterref/@filter")
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if filterref:
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result.append(filterref[0])
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return result
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return util.get_xml_path(self._XMLDesc(0), func=filterrefs)
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def get_description(self):
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description = util.get_xml_path(self._XMLDesc(0), "/domain/description")
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return description or ""
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def get_max_memory(self):
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return self.wvm.getInfo()[1] * 1048576
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def get_max_cpus(self):
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"""Get number of physical CPUs."""
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hostinfo = self.wvm.getInfo()
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pcpus = hostinfo[4] * hostinfo[5] * hostinfo[6] * hostinfo[7]
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return range(1, int(pcpus + 1))
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def get_interface_addresses(self, iface_mac):
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if self._ip_cache is None:
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self.refresh_interface_addresses()
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qemuga = self._ip_cache["qemuga"]
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arp = self._ip_cache["arp"]
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leases = []
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def extract_dom(info):
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ipv4 = []
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ipv6 = []
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for addrs in info.values():
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if addrs["hwaddr"] != iface_mac:
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continue
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if not addrs["addrs"]:
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continue
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for addr in addrs["addrs"]:
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if addr["type"] == 0:
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ipv4.append(addr["addr"])
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elif addr["type"] == 1 and not str(addr["addr"]).startswith("fe80"):
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ipv6.append(addr["addr"] + "/" + str(addr["prefix"]))
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return ipv4, ipv6
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def extract_lease(info):
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ipv4 = []
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ipv6 = []
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if info["mac"] == iface_mac:
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if info["type"] == 0:
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ipv4.append(info["ipaddr"])
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elif info["type"] == 1:
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ipv6.append(info["ipaddr"])
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return ipv4, ipv6
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for ips in [qemuga] + leases + [arp]:
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ipv4, ipv6 = extract_lease(ips) if "expirytime" in ips else extract_dom(ips)
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if ipv4 or ipv6:
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return ipv4, ipv6
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return None, None
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def _get_interface_addresses(self, source):
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# ("Calling interfaceAddresses source=%s", source)
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with contextlib.suppress(libvirtError):
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return self.instance.interfaceAddresses(source)
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return {}
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def refresh_interface_addresses(self):
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self._ip_cache = {"qemuga": {}, "arp": {}}
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if self.get_status() != 1:
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return
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if self.is_agent_ready():
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self._ip_cache["qemuga"] = self._get_interface_addresses(
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VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_AGENT
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)
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arp_flag = 3 # libvirt."VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_ARP"
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self._ip_cache["arp"] = self._get_interface_addresses(arp_flag)
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def get_net_devices(self):
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def networks(ctx):
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result = []
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inbound = outbound = []
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for net in ctx.xpath("/domain/devices/interface"):
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interface_type = net.xpath("@type")[0]
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mac_inst = net.xpath("mac/@address")[0]
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nic_inst = net.xpath("source/@network|source/@bridge|source/@dev")[0]
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target_inst = net.xpath("target/@dev")[0] if net.xpath("target/@dev") else ""
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link_state = net.xpath("link/@state")[0] if net.xpath("link") else "up"
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filterref_inst = net.xpath("filterref/@filter")[0] if net.xpath("filterref/@filter") else ""
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model_type = net.xpath("model/@type")[0]
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if net.xpath("bandwidth/inbound"):
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in_attr = net.xpath("bandwidth/inbound")[0]
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in_av = in_attr.get("average")
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in_peak = in_attr.get("peak")
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in_burst = in_attr.get("burst")
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inbound = {"average": in_av, "peak": in_peak, "burst": in_burst}
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if net.xpath("bandwidth/outbound"):
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out_attr = net.xpath("bandwidth/outbound")[0]
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out_av = out_attr.get("average")
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out_peak = out_attr.get("peak")
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out_burst = out_attr.get("burst")
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outbound = {"average": out_av, "peak": out_peak, "burst": out_burst}
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try:
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ipv4, ipv6 = self.get_interface_addresses(mac_inst)
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except libvirtError:
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ipv4, ipv6 = None, None
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result.append(
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{
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"type": interface_type,
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"mac": mac_inst,
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"nic": nic_inst,
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"target": target_inst,
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"state": link_state,
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"model": model_type,
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"ipv4": ipv4,
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"ipv6": ipv6,
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"filterref": filterref_inst,
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"inbound": inbound,
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"outbound": outbound,
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}
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)
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return result
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return util.get_xml_path(self._XMLDesc(0), func=networks)
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def get_disk_devices(self, config=False):
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def disks(doc):
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result = []
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for disk in doc.xpath("/domain/devices/disk"):
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dev = volume = storage = src_file = bus = None
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disk_format = used_size = disk_size = None
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disk_cache = disk_io = disk_discard = disk_zeroes = "default"
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readonly = shareable = serial = None
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backing_file = None
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device = disk.xpath("@device")[0]
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if device == "disk":
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try:
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dev = disk.xpath("target/@dev")[0]
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bus = disk.xpath("target/@bus")[0]
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try:
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src_file = disk.xpath(
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"source/@file|source/@dev|source/@name"
|
|
)[0]
|
|
except Exception:
|
|
v = disk.xpath("source/@volume")[0]
|
|
s_name = disk.xpath("source/@pool")[0]
|
|
s = self.wvm.storagePoolLookupByName(s_name)
|
|
src_file = s.storageVolLookupByName(v).path()
|
|
|
|
with contextlib.suppress(Exception):
|
|
disk_format = disk.xpath("driver/@type")[0]
|
|
|
|
with contextlib.suppress(Exception):
|
|
disk_cache = disk.xpath("driver/@cache")[0]
|
|
|
|
with contextlib.suppress(Exception):
|
|
disk_io = disk.xpath("driver/@io")[0]
|
|
|
|
with contextlib.suppress(Exception):
|
|
disk_discard = disk.xpath("driver/@discard")[0]
|
|
|
|
with contextlib.suppress(Exception):
|
|
disk_zeroes = disk.xpath("driver/@detect_zeroes")[0]
|
|
|
|
with contextlib.suppress(Exception):
|
|
backing_file = disk.xpath("backingStore/source/@file")[0]
|
|
|
|
readonly = bool(disk.xpath("readonly"))
|
|
shareable = bool(disk.xpath("shareable"))
|
|
serial = (
|
|
disk.xpath("serial")[0].text
|
|
if disk.xpath("serial")
|
|
else None
|
|
)
|
|
|
|
try:
|
|
vol = self.get_volume_by_path(src_file)
|
|
volume = vol.name()
|
|
|
|
disk_size = vol.info()[1]
|
|
used_size = vol.info()[2]
|
|
stg = vol.storagePoolLookupByVolume()
|
|
storage = stg.name()
|
|
except libvirtError:
|
|
volume = src_file
|
|
except Exception as e:
|
|
print(f"Exception: {e}")
|
|
finally:
|
|
result.append(
|
|
{
|
|
"dev": dev,
|
|
"bus": bus,
|
|
"image": volume,
|
|
"storage": storage,
|
|
"path": src_file,
|
|
"format": disk_format,
|
|
"backing_file": backing_file,
|
|
"size": disk_size,
|
|
"used": used_size,
|
|
"cache": disk_cache,
|
|
"io": disk_io,
|
|
"discard": disk_discard,
|
|
"detect_zeroes": disk_zeroes,
|
|
"readonly": readonly,
|
|
"shareable": shareable,
|
|
"serial": serial,
|
|
}
|
|
)
|
|
return result
|
|
|
|
flags = VIR_DOMAIN_XML_INACTIVE | VIR_DOMAIN_XML_SECURE if config else 0
|
|
return util.get_xml_path(self._XMLDesc(flags), func=disks)
|
|
|
|
def get_media_devices(self):
|
|
def disks(doc):
|
|
result = []
|
|
dev = volume = storage = bus = None
|
|
src_file = None
|
|
for media in doc.xpath("/domain/devices/disk"):
|
|
device = media.xpath("@device")[0]
|
|
if device == "cdrom":
|
|
try:
|
|
dev = media.xpath("target/@dev")[0]
|
|
bus = media.xpath("target/@bus")[0]
|
|
src_file = None
|
|
volume = src_file
|
|
with contextlib.suppress(Exception):
|
|
src_file = media.xpath("source/@file")[0]
|
|
vol = self.get_volume_by_path(src_file)
|
|
volume = vol.name()
|
|
stg = vol.storagePoolLookupByVolume()
|
|
storage = stg.name()
|
|
except Exception:
|
|
pass
|
|
finally:
|
|
result.append(
|
|
{
|
|
"dev": dev,
|
|
"image": volume,
|
|
"storage": storage,
|
|
"path": src_file,
|
|
"bus": bus,
|
|
}
|
|
)
|
|
return result
|
|
|
|
return util.get_xml_path(self._XMLDesc(0), func=disks)
|
|
|
|
def get_bootmenu(self):
|
|
menu = util.get_xml_path(self._XMLDesc(0), "/domain/os/bootmenu/@enable")
|
|
return menu == "yes"
|
|
|
|
def set_bootmenu(self, flag):
|
|
tree = ElementTree.fromstring(self._XMLDesc(PERSISTENT_XML))
|
|
os = tree.find("os")
|
|
menu = os.find("bootmenu")
|
|
|
|
if menu is None:
|
|
bootmenu = ElementTree.fromstring("<bootmenu enable='yes'/>")
|
|
os.append(bootmenu)
|
|
menu = os.find("bootmenu")
|
|
|
|
if flag == 0: # Disable
|
|
menu.attrib["enable"] = "no"
|
|
elif flag == 1: # Enable
|
|
menu.attrib["enable"] = "yes"
|
|
elif flag == -1: # Remove
|
|
os.remove(menu)
|
|
else:
|
|
raise Exception(
|
|
"Unknown boot menu option, please choose one of 0:disable, 1:enable, -1:remove"
|
|
)
|
|
|
|
xmldom = ElementTree.tostring(tree).decode()
|
|
self._defineXML(xmldom)
|
|
|
|
def get_bootorder(self):
|
|
boot_order = {}
|
|
dev_type = target = None
|
|
tree = ElementTree.fromstring(self._XMLDesc(0))
|
|
os = tree.find("os")
|
|
boot = os.findall("boot")
|
|
|
|
for idx, b in enumerate(boot):
|
|
dev = b.get("dev")
|
|
if dev == "cdrom":
|
|
target = "cdrom"
|
|
dev_type = "file"
|
|
elif dev == "fd":
|
|
target = "floppy"
|
|
dev_type = "file"
|
|
elif dev == "hd":
|
|
target = "disk"
|
|
dev_type = "file"
|
|
elif dev == "network":
|
|
target = "network"
|
|
dev_type = "network"
|
|
boot_order[idx] = {"type": dev_type, "dev": dev, "target": target}
|
|
|
|
devices = tree.find("devices")
|
|
for dev in devices:
|
|
dev_target = None
|
|
boot_dev = dev.find("boot")
|
|
if boot_dev is not None:
|
|
idx = boot_dev.get("order")
|
|
dev_type = dev.get("type")
|
|
dev_device = dev.get("device")
|
|
|
|
if dev_type == "file" or (dev_device == "disk" and dev_type == "network"):
|
|
dev_target = dev.find("target").get("dev")
|
|
|
|
elif dev_type == "network":
|
|
dev_mac = dev.find("mac").get("address")
|
|
dev_device = "network"
|
|
dev_target = f"nic-{dev_mac[9:]}"
|
|
# pass dev_type usb
|
|
boot_order[int(idx) - 1] = {
|
|
"type": dev_type,
|
|
"dev": dev_device,
|
|
"target": dev_target,
|
|
}
|
|
|
|
return boot_order
|
|
|
|
def set_bootorder(self, devorder):
|
|
if not devorder:
|
|
return
|
|
|
|
def remove_bootorder():
|
|
tree = ElementTree.fromstring(self._XMLDesc(PERSISTENT_XML))
|
|
os = tree.find("os")
|
|
boot = os.findall("boot")
|
|
# Remove old style boot order
|
|
for b in boot:
|
|
os.remove(b)
|
|
# Remove rest of them
|
|
for dev in tree.find("devices"):
|
|
boot_dev = dev.find("boot")
|
|
if boot_dev is not None:
|
|
dev.remove(boot_dev)
|
|
return tree
|
|
|
|
tree = remove_bootorder()
|
|
|
|
for idx, dev in devorder.items():
|
|
order = ElementTree.fromstring("<boot order='{}'/>".format(idx + 1))
|
|
if dev["type"] == "disk":
|
|
devices = tree.findall("./devices/disk[@device='disk']")
|
|
for d in devices:
|
|
device = d.find("./target[@dev='{}']".format(dev["dev"]))
|
|
if device is not None:
|
|
d.append(order)
|
|
elif dev["type"] == "cdrom":
|
|
devices = tree.findall("./devices/disk[@device='cdrom']")
|
|
for d in devices:
|
|
device = d.find("./target[@dev='{}']".format(dev["dev"]))
|
|
if device is not None:
|
|
d.append(order)
|
|
elif dev["type"] == "network":
|
|
devices = tree.findall("./devices/interface[@type='network']")
|
|
for d in devices:
|
|
device = d.find("mac[@address='{}']".format(dev["dev"]))
|
|
if device is not None:
|
|
d.append(order)
|
|
else:
|
|
raise Exception("Invalid Device Type for boot order")
|
|
self._defineXML(ElementTree.tostring(tree).decode())
|
|
|
|
def _set_cdrom_media(self, dev, path):
|
|
"""Insert path into, or with None eject, CD-ROM dev.
|
|
|
|
The live and the persistent definition are updated separately from
|
|
their own device XML, so neither is rewritten from the other (R-12).
|
|
"""
|
|
definitions = [("persistent", PERSISTENT_XML, VIR_DOMAIN_AFFECT_CONFIG)]
|
|
if self.instance.isActive(): # running or paused
|
|
definitions.insert(0, ("running", VIR_DOMAIN_XML_SECURE, VIR_DOMAIN_AFFECT_LIVE))
|
|
devices = []
|
|
for label, xml_flags, _ in definitions:
|
|
tree = etree.fromstring(self._XMLDesc(xml_flags))
|
|
found = tree.xpath("./devices/disk[@device='cdrom'][target/@dev=$dev]", dev=dev)
|
|
if not found:
|
|
raise util.OperationError(f"CD-ROM {dev} is not in the {label} definition")
|
|
devices.append(found[0])
|
|
for (label, _, affect), disk in zip(definitions, devices):
|
|
for source in disk.findall("source"):
|
|
disk.remove(source)
|
|
if path:
|
|
disk.insert(1, etree.Element("source", file=path))
|
|
try:
|
|
self.instance.updateDeviceFlags(etree.tostring(disk).decode(), affect)
|
|
except libvirtError as err:
|
|
if label == "persistent" and len(definitions) == 2:
|
|
raise util.OperationError(f"Media of {dev} changed in the running VM only: {err}") from err
|
|
raise
|
|
|
|
def mount_iso(self, dev, image):
|
|
paths = []
|
|
for storage in self.get_storages(only_actives=True):
|
|
stg = self.get_storage(storage)
|
|
if image in stg.listVolumes():
|
|
paths.append(stg.storageVolLookupByName(image).path())
|
|
if not paths:
|
|
raise util.OperationError(f"ISO image {image} was not found")
|
|
if len(paths) > 1:
|
|
raise util.OperationError(f"ISO image {image} is in more than one storage pool")
|
|
self._set_cdrom_media(dev, paths[0])
|
|
|
|
def umount_iso(self, dev, image=None):
|
|
self._set_cdrom_media(dev, None)
|
|
|
|
def attach_disk(
|
|
self,
|
|
target_dev,
|
|
source,
|
|
source_info=None,
|
|
pool_type="dir",
|
|
target_bus="ide",
|
|
disk_type="file",
|
|
disk_device="disk",
|
|
driver_name="qemu",
|
|
format_type="raw",
|
|
readonly=False,
|
|
shareable=False,
|
|
serial=None,
|
|
cache_mode=None,
|
|
io_mode=None,
|
|
discard_mode=None,
|
|
detect_zeroes_mode=None,
|
|
):
|
|
# Every value below is interpolated into disk XML; escape them all so
|
|
# a quote in a path, serial or option cannot inject XML.
|
|
esc = util.xml_escape
|
|
target_dev, source, target_bus = esc(target_dev), esc(source), esc(target_bus)
|
|
disk_type, disk_device = esc(disk_type), esc(disk_device)
|
|
driver_name, format_type = esc(driver_name), esc(format_type)
|
|
serial = esc(serial)
|
|
cache_mode, io_mode = esc(cache_mode), esc(io_mode)
|
|
discard_mode, detect_zeroes_mode = esc(discard_mode), esc(detect_zeroes_mode)
|
|
|
|
additionals = ""
|
|
if (
|
|
cache_mode is not None
|
|
and cache_mode != "default"
|
|
and disk_device != "cdrom"
|
|
):
|
|
additionals += f"cache='{cache_mode}' "
|
|
if io_mode is not None and io_mode != "default":
|
|
additionals += f"io='{io_mode}' "
|
|
if discard_mode is not None and discard_mode != "default":
|
|
additionals += f"discard='{discard_mode}' "
|
|
if detect_zeroes_mode is not None and detect_zeroes_mode != "default":
|
|
additionals += f"detect_zeroes='{detect_zeroes_mode}' "
|
|
|
|
xml_disk = f"<disk type='{disk_type}' device='{disk_device}'>"
|
|
if disk_device == "cdrom":
|
|
xml_disk += f"<driver name='{driver_name}' type='{format_type}'/>"
|
|
elif disk_device == "disk":
|
|
xml_disk += (
|
|
f"<driver name='{driver_name}' type='{format_type}' {additionals}/>"
|
|
)
|
|
|
|
if disk_type == "file":
|
|
xml_disk += f"<source file='{source}'/>"
|
|
elif disk_type == "network":
|
|
if pool_type == "rbd":
|
|
auth_type = source_info.get("auth_type")
|
|
auth_user = source_info.get("auth_user")
|
|
auth_uuid = source_info.get("auth_uuid")
|
|
xml_disk += f"""<auth username='{auth_user}'>
|
|
<secret type='{auth_type}' uuid='{auth_uuid}'/>
|
|
</auth>"""
|
|
xml_disk += f"""<source protocol='{pool_type}' name='{source}'>"""
|
|
for host in source_info.get("hosts"):
|
|
if host.get("hostport"):
|
|
xml_disk += f"""<host name="{host.get('hostname')}" port='{host.get('hostport')}'/>"""
|
|
else:
|
|
xml_disk += f"""<host name="{host.get('hostname')}"/>"""
|
|
xml_disk += """</source>"""
|
|
else:
|
|
raise Exception("Not implemented disk type")
|
|
else:
|
|
raise Exception("Not implemented disk type")
|
|
|
|
xml_disk += f"<target dev='{target_dev}' bus='{target_bus}'/>"
|
|
if readonly or disk_device == "cdrom":
|
|
xml_disk += """<readonly/>"""
|
|
if shareable:
|
|
xml_disk += """<shareable/>"""
|
|
if serial is not None and serial != "None" and serial != "":
|
|
xml_disk += f"""<serial>{serial}</serial>"""
|
|
xml_disk += """</disk>"""
|
|
if self.get_status() == 1:
|
|
self.instance.attachDeviceFlags(xml_disk, VIR_DOMAIN_AFFECT_LIVE)
|
|
self.instance.attachDeviceFlags(xml_disk, VIR_DOMAIN_AFFECT_CONFIG)
|
|
if self.get_status() == 5:
|
|
self.instance.attachDeviceFlags(xml_disk, VIR_DOMAIN_AFFECT_CONFIG)
|
|
|
|
def detach_disk(self, target_dev):
|
|
tree = etree.fromstring(self._XMLDesc(0))
|
|
|
|
disk_el = tree.xpath("./devices/disk/target[@dev=$dev]", dev=target_dev)[
|
|
0
|
|
].getparent()
|
|
xml_disk = etree.tostring(disk_el).decode()
|
|
|
|
# Paused and other active states need the live detach too.
|
|
if self.instance.isActive():
|
|
self.instance.detachDeviceFlags(xml_disk, VIR_DOMAIN_AFFECT_LIVE)
|
|
self.instance.detachDeviceFlags(xml_disk, VIR_DOMAIN_AFFECT_CONFIG)
|
|
|
|
def has_disk(self, target_dev):
|
|
"""True while the live or the persistent definition still has target_dev."""
|
|
for flags in (0, VIR_DOMAIN_XML_INACTIVE):
|
|
tree = etree.fromstring(self._XMLDesc(flags))
|
|
if tree.xpath("./devices/disk/target[@dev=$dev]", dev=target_dev):
|
|
return True
|
|
return False
|
|
|
|
def wait_disk_detached(self, target_dev, timeout=10):
|
|
"""A live detach completes only when the guest releases the disk."""
|
|
deadline = time.monotonic() + timeout
|
|
while self.has_disk(target_dev):
|
|
if time.monotonic() >= deadline:
|
|
return False
|
|
time.sleep(0.5)
|
|
return True
|
|
|
|
def edit_disk(
|
|
self,
|
|
target_dev,
|
|
source,
|
|
readonly,
|
|
shareable,
|
|
target_bus,
|
|
serial,
|
|
format,
|
|
cache_mode,
|
|
io_mode,
|
|
discard_mode,
|
|
detect_zeroes_mode,
|
|
):
|
|
"""Edit the persistent disk in place and commit its domain XML once."""
|
|
tree = etree.fromstring(
|
|
self._XMLDesc(VIR_DOMAIN_XML_INACTIVE | VIR_DOMAIN_XML_SECURE)
|
|
)
|
|
matches = tree.xpath("./devices/disk/target[@dev=$dev]", dev=target_dev)
|
|
if not matches:
|
|
raise ValueError(f"Disk {target_dev} is not in the persistent configuration")
|
|
target = matches[0]
|
|
disk = target.getparent()
|
|
|
|
if target.get("bus") != target_bus:
|
|
prefix = {"virtio": "vd", "ide": "hd", "fdc": "fd"}.get(target_bus, "sd")
|
|
used = set(tree.xpath("./devices/disk/target/@dev")) - {target_dev}
|
|
new_dev = target_dev if target_dev.startswith(prefix) else next(
|
|
(prefix + letter for letter in string.ascii_lowercase if prefix + letter not in used),
|
|
None,
|
|
)
|
|
if new_dev is None:
|
|
raise ValueError("No available device name for the requested disk bus")
|
|
target.set("dev", new_dev)
|
|
target.set("bus", target_bus)
|
|
for address in disk.findall("address"):
|
|
disk.remove(address)
|
|
|
|
driver = disk.find("driver")
|
|
if driver is None:
|
|
driver = etree.Element("driver", name="qemu")
|
|
disk.insert(0, driver)
|
|
if target_bus != "virtio":
|
|
for key in ("queues", "queue_size", "iothread", "iommu", "ats", "packed", "page_per_vq"):
|
|
driver.attrib.pop(key, None)
|
|
for iothreads in driver.findall("iothreads"):
|
|
driver.remove(iothreads)
|
|
disk.attrib.pop("model", None)
|
|
for key, value in (
|
|
("type", format), ("cache", cache_mode), ("io", io_mode),
|
|
("discard", discard_mode), ("detect_zeroes", detect_zeroes_mode),
|
|
):
|
|
if value and value != "default":
|
|
driver.set(key, value)
|
|
else:
|
|
driver.attrib.pop(key, None)
|
|
|
|
if disk.get("type") == "file":
|
|
source_el = disk.find("source")
|
|
if source_el is None:
|
|
source_el = etree.SubElement(disk, "source")
|
|
source_el.set("file", source)
|
|
|
|
for tag, enabled in (("readonly", readonly), ("shareable", shareable)):
|
|
element = disk.find(tag)
|
|
if enabled and element is None:
|
|
etree.SubElement(disk, tag)
|
|
elif not enabled and element is not None:
|
|
disk.remove(element)
|
|
serial_el = disk.find("serial")
|
|
if serial and serial != "None":
|
|
if serial_el is None:
|
|
serial_el = etree.SubElement(disk, "serial")
|
|
serial_el.text = serial
|
|
elif serial_el is not None:
|
|
disk.remove(serial_el)
|
|
|
|
self._defineXML(etree.tostring(tree).decode())
|
|
|
|
def cpu_usage(self):
|
|
cpu_usage = {}
|
|
if self.get_status() == 1:
|
|
nbcore = self.wvm.getInfo()[2]
|
|
cpu_use_ago = self.instance.info()[4]
|
|
time.sleep(1)
|
|
cpu_use_now = self.instance.info()[4]
|
|
diff_usage = cpu_use_now - cpu_use_ago
|
|
cpu_usage["cpu"] = 100 * diff_usage / (1 * nbcore * 10**9)
|
|
else:
|
|
cpu_usage["cpu"] = 0
|
|
return cpu_usage
|
|
|
|
def set_vcpu(self, cpu_id, enabled):
|
|
self.instance.setVcpu(str(cpu_id), enabled)
|
|
|
|
def set_vcpu_hotplug(self, status, vcpus_hotplug=0):
|
|
"""vcpus_hotplug = 0 make all vpus hotpluggable"""
|
|
vcpus_hotplug = int(self.get_vcpu()) if vcpus_hotplug == 0 else vcpus_hotplug
|
|
if self.get_status() == 5: # shutoff
|
|
if status:
|
|
xml = """ <vcpus>"""
|
|
xml += """<vcpu id='0' enabled='yes' hotpluggable='no' order='1'/>"""
|
|
for i in range(1, vcpus_hotplug):
|
|
xml += f"""<vcpu id='{i}' enabled='yes' hotpluggable='yes' order='{i+1}'/>"""
|
|
xml += """</vcpus>"""
|
|
|
|
tree = etree.fromstring(self._XMLDesc(PERSISTENT_XML))
|
|
vcpus = tree.xpath("/domain/vcpus")
|
|
if not vcpus:
|
|
tree.append(etree.fromstring(xml))
|
|
self._defineXML(etree.tostring(tree).decode())
|
|
else:
|
|
tree = etree.fromstring(self._XMLDesc(PERSISTENT_XML))
|
|
vcpus = tree.xpath("/domain/vcpus")
|
|
for vcpu in vcpus:
|
|
parent = vcpu.getparent()
|
|
parent.remove(vcpu)
|
|
self._defineXML(etree.tostring(tree).decode())
|
|
else:
|
|
raise util.OperationError(
|
|
"Please shutdown the instance then try to enable vCPU hotplug"
|
|
)
|
|
|
|
def mem_usage(self):
|
|
mem_usage = {}
|
|
if self.get_status() == 1:
|
|
mem_stats = self.instance.memoryStats()
|
|
rss = mem_stats["rss"] if "rss" in mem_stats else 0
|
|
total = mem_stats["actual"] if "actual" in mem_stats else 0
|
|
available = total - rss
|
|
if available < 0:
|
|
available = 0
|
|
|
|
mem_usage["used"] = rss
|
|
mem_usage["total"] = total
|
|
else:
|
|
mem_usage["used"] = 0
|
|
mem_usage["total"] = 0
|
|
return mem_usage
|
|
|
|
def disk_usage(self):
|
|
devices = []
|
|
dev_usage = []
|
|
tree = ElementTree.fromstring(self._XMLDesc(0))
|
|
for disk in tree.findall("devices/disk"):
|
|
if disk.get("device") == "disk":
|
|
dev_file = None
|
|
dev_bus = None
|
|
network_disk = True
|
|
for elm in disk:
|
|
if elm.tag == "source":
|
|
if elm.get("protocol"):
|
|
dev_file = elm.get("protocol")
|
|
network_disk = True
|
|
if elm.get("file"):
|
|
dev_file = elm.get("file")
|
|
if elm.get("dev"):
|
|
dev_file = elm.get("dev")
|
|
if elm.tag == "target":
|
|
dev_bus = elm.get("dev")
|
|
if (dev_file and dev_bus) is not None:
|
|
if network_disk:
|
|
dev_file = dev_bus
|
|
devices.append([dev_file, dev_bus])
|
|
for dev in devices:
|
|
if self.get_status() == 1:
|
|
rd_use_ago = self.instance.blockStats(dev[0])[1]
|
|
wr_use_ago = self.instance.blockStats(dev[0])[3]
|
|
time.sleep(1)
|
|
rd_use_now = self.instance.blockStats(dev[0])[1]
|
|
wr_use_now = self.instance.blockStats(dev[0])[3]
|
|
rd_diff_usage = rd_use_now - rd_use_ago
|
|
wr_diff_usage = wr_use_now - wr_use_ago
|
|
else:
|
|
rd_diff_usage = 0
|
|
wr_diff_usage = 0
|
|
dev_usage.append({"dev": dev[1], "rd": rd_diff_usage, "wr": wr_diff_usage})
|
|
return dev_usage
|
|
|
|
def net_usage(self):
|
|
devices = []
|
|
dev_usage = []
|
|
if self.get_status() == 1:
|
|
tree = ElementTree.fromstring(self._XMLDesc(0))
|
|
for target in tree.findall("devices/interface/target"):
|
|
devices.append(target.get("dev"))
|
|
for i, dev in enumerate(devices):
|
|
rx_use_ago = self.instance.interfaceStats(dev)[0]
|
|
tx_use_ago = self.instance.interfaceStats(dev)[4]
|
|
time.sleep(1)
|
|
rx_use_now = self.instance.interfaceStats(dev)[0]
|
|
tx_use_now = self.instance.interfaceStats(dev)[4]
|
|
rx_diff_usage = (rx_use_now - rx_use_ago) * 8
|
|
tx_diff_usage = (tx_use_now - tx_use_ago) * 8
|
|
dev_usage.append({"dev": i, "rx": rx_diff_usage, "tx": tx_diff_usage})
|
|
else:
|
|
for i, dev in enumerate(self.get_net_devices()):
|
|
dev_usage.append({"dev": i, "rx": 0, "tx": 0})
|
|
return dev_usage
|
|
|
|
def get_telnet_port(self):
|
|
telnet_port = None
|
|
service_port = None
|
|
tree = ElementTree.fromstring(self._XMLDesc(0))
|
|
for console in tree.findall("devices/console"):
|
|
if console.get("type") == "tcp":
|
|
for elm in console:
|
|
if elm.tag == "source":
|
|
if elm.get("service"):
|
|
service_port = elm.get("service")
|
|
if elm.tag == "protocol":
|
|
if elm.get("type") == "telnet":
|
|
if service_port is not None:
|
|
telnet_port = service_port
|
|
return telnet_port
|
|
|
|
def get_console_listener_addr(self):
|
|
listener_addr = util.get_xml_path(
|
|
self._XMLDesc(0), "/domain/devices/graphics/@listen"
|
|
)
|
|
if listener_addr is None:
|
|
listener_addr = util.get_xml_path(
|
|
self._XMLDesc(0), "/domain/devices/graphics/listen/@address"
|
|
)
|
|
if listener_addr is None:
|
|
return "127.0.0.1"
|
|
return listener_addr
|
|
|
|
def set_console_listener_addr(self, listener_addr):
|
|
root = ElementTree.fromstring(self._XMLDesc(PERSISTENT_XML))
|
|
# The console is the first graphics device of the definition being
|
|
# edited; the running VM may still have another type.
|
|
graphic = root.find("devices/graphics")
|
|
if graphic is None:
|
|
return False
|
|
listen = graphic.find("listen[@type='address']")
|
|
if listen is None:
|
|
return False
|
|
if listener_addr:
|
|
graphic.set("listen", listener_addr)
|
|
listen.set("address", listener_addr)
|
|
else:
|
|
with contextlib.suppress(Exception):
|
|
graphic.attrib.pop("listen")
|
|
listen.attrib.pop("address")
|
|
|
|
newxml = ElementTree.tostring(root).decode()
|
|
return self._defineXML(newxml)
|
|
|
|
def get_console_socket(self):
|
|
socket = util.get_xml_path(self._XMLDesc(0), "/domain/devices/graphics/@socket")
|
|
return socket
|
|
|
|
def get_console_type(self):
|
|
console_type = util.get_xml_path(
|
|
self._XMLDesc(0), "/domain/devices/graphics/@type"
|
|
)
|
|
if console_type is None:
|
|
console_type = util.get_xml_path(
|
|
self._XMLDesc(0), "/domain/devices/console/@type"
|
|
)
|
|
return console_type
|
|
|
|
def get_console_port(self, console_type=None):
|
|
if console_type is None:
|
|
console_type = self.get_console_type()
|
|
port = util.get_xml_path(
|
|
self._XMLDesc(0),
|
|
"/domain/devices/graphics[@type='%s']/@port" % console_type,
|
|
)
|
|
return port
|
|
|
|
def get_console_websocket_port(self):
|
|
console_type = self.get_console_type()
|
|
websocket_port = util.get_xml_path(
|
|
self._XMLDesc(0),
|
|
"/domain/devices/graphics[@type='%s']/@websocket" % console_type,
|
|
)
|
|
return websocket_port
|
|
|
|
def get_console_passwd(self):
|
|
return util.get_xml_path(
|
|
self._XMLDesc(VIR_DOMAIN_XML_SECURE), "/domain/devices/graphics/@passwd"
|
|
)
|
|
|
|
def set_console_passwd(self, passwd):
|
|
root = ElementTree.fromstring(self._XMLDesc(PERSISTENT_XML))
|
|
graphic = root.find("devices/graphics")
|
|
if graphic is None:
|
|
return False
|
|
if passwd:
|
|
graphic.set("passwd", passwd)
|
|
else:
|
|
with contextlib.suppress(Exception):
|
|
graphic.attrib.pop("passwd")
|
|
|
|
newxml = ElementTree.tostring(root).decode()
|
|
return self._defineXML(newxml)
|
|
|
|
def set_console_keymap(self, keymap):
|
|
root = ElementTree.fromstring(self._XMLDesc(PERSISTENT_XML))
|
|
graphic = root.find("devices/graphics")
|
|
if graphic is None:
|
|
return False
|
|
if keymap != "auto":
|
|
graphic.set("keymap", keymap)
|
|
else:
|
|
with contextlib.suppress(Exception):
|
|
graphic.attrib.pop("keymap")
|
|
|
|
newxml = ElementTree.tostring(root).decode()
|
|
self._defineXML(newxml)
|
|
|
|
def get_console_keymap(self):
|
|
return (
|
|
util.get_xml_path(
|
|
self._XMLDesc(VIR_DOMAIN_XML_SECURE), "/domain/devices/graphics/@keymap"
|
|
)
|
|
or ""
|
|
)
|
|
|
|
def get_video_model(self):
|
|
""":return only primary video card"""
|
|
xml = self._XMLDesc(VIR_DOMAIN_XML_SECURE)
|
|
tree = etree.fromstring(xml)
|
|
video_models = tree.xpath("/domain/devices/video/model")
|
|
for model in video_models:
|
|
if model.get("primary") == "yes" or len(video_models) == 1:
|
|
return model.get("type")
|
|
|
|
def set_video_model(self, model):
|
|
"""Changes only primary video card"""
|
|
xml = self._XMLDesc(PERSISTENT_XML)
|
|
tree = etree.fromstring(xml)
|
|
video_models = tree.xpath("/domain/devices/video/model")
|
|
video_xml = "<model type='{}'/>".format(model)
|
|
for model in video_models:
|
|
if model.get("primary") == "yes" or len(video_models) == 1:
|
|
parent = model.getparent()
|
|
parent.remove(model)
|
|
parent.append(etree.fromstring(video_xml))
|
|
self._defineXML(etree.tostring(tree).decode())
|
|
|
|
def resize_cpu(self, cur_vcpu, vcpu):
|
|
"""
|
|
Function change ram and cpu on instance.
|
|
"""
|
|
is_vcpus_enabled = self.get_vcpus()
|
|
if is_vcpus_enabled:
|
|
self.set_vcpu_hotplug(False)
|
|
|
|
xml = self._XMLDesc(PERSISTENT_XML)
|
|
tree = etree.fromstring(xml)
|
|
|
|
vcpu_elem = tree.find("vcpu")
|
|
vcpu_elem.text = vcpu
|
|
vcpu_elem.set("current", cur_vcpu)
|
|
|
|
new_xml = etree.tostring(tree).decode()
|
|
self._defineXML(new_xml)
|
|
|
|
if is_vcpus_enabled:
|
|
self.set_vcpu_hotplug(True, int(cur_vcpu))
|
|
|
|
def resize_mem(self, cur_memory, memory):
|
|
"""
|
|
Function change ram and cpu on vds.
|
|
"""
|
|
memory = int(memory) * 1024
|
|
cur_memory = int(cur_memory) * 1024
|
|
# if dom is running change only ram
|
|
if self.get_status() == VIR_DOMAIN_RUNNING:
|
|
self.set_memory(cur_memory, VIR_DOMAIN_AFFECT_LIVE)
|
|
self.set_memory(cur_memory, VIR_DOMAIN_AFFECT_CONFIG)
|
|
return
|
|
|
|
xml = self._XMLDesc(PERSISTENT_XML)
|
|
tree = etree.fromstring(xml)
|
|
|
|
mem_elem = tree.find("memory")
|
|
mem_elem.text = str(memory)
|
|
cur_mem_elem = tree.find("currentMemory")
|
|
cur_mem_elem.text = str(cur_memory)
|
|
|
|
new_xml = etree.tostring(tree).decode()
|
|
self._defineXML(new_xml)
|
|
|
|
def resize_disk(self, disks):
|
|
"""Grow disks. QEMU holds the lock of a running domain's image files and
|
|
grows them itself; block volumes (e.g. LVM) are grown by the storage
|
|
pool first, then QEMU is told the new size."""
|
|
active = self.instance.isActive()
|
|
for disk in disks:
|
|
vol = self.get_volume_by_path(disk["path"])
|
|
if not active or vol.info()[0] != VIR_STORAGE_VOL_FILE:
|
|
vol.resize(disk["size_new"])
|
|
if active:
|
|
self.instance.blockResize(disk["path"], disk["size_new"], VIR_DOMAIN_BLOCK_RESIZE_BYTES)
|
|
|
|
def get_iso_media(self):
|
|
iso = []
|
|
storages = self.get_storages(only_actives=True)
|
|
for storage in storages:
|
|
stg = self.get_storage(storage)
|
|
if stg.info()[0] != 0:
|
|
with contextlib.suppress(Exception):
|
|
stg.refresh(0)
|
|
|
|
for img in stg.listVolumes():
|
|
if img.lower().endswith(".iso"):
|
|
iso.append(img)
|
|
return iso
|
|
|
|
def paths_used_by_other_domains(self):
|
|
"""Paths another domain uses as a disk or as a backing file of one."""
|
|
uuid = self.instance.UUIDString()
|
|
used = set()
|
|
for dom in self.wvm.listAllDomains():
|
|
if dom.UUIDString() == uuid:
|
|
continue
|
|
for flags in (0, VIR_DOMAIN_XML_INACTIVE):
|
|
tree = etree.fromstring(dom.XMLDesc(flags))
|
|
# "//" also reaches backingStore chains in a running domain's XML
|
|
used.update(tree.xpath("./devices/disk//source/@file|./devices/disk//source/@dev"))
|
|
# A stopped domain's XML has no backing chain; the volumes have it.
|
|
# Any volume backed by a path keeps that path, even an unattached one.
|
|
for pool in self.wvm.listAllStoragePools():
|
|
if not pool.isActive():
|
|
continue
|
|
with contextlib.suppress(libvirtError):
|
|
pool.refresh(0)
|
|
for vol in pool.listAllVolumes():
|
|
with contextlib.suppress(libvirtError):
|
|
used.update(etree.fromstring(vol.XMLDesc(0)).xpath("./backingStore/path/text()"))
|
|
return used
|
|
|
|
def split_disk_paths_by_use(self):
|
|
"""This VM's disk paths, split into (only this VM, also used by another domain)."""
|
|
self.refresh_instance_pools()
|
|
own = [disk["path"] for disk in self.get_disk_devices() if disk["path"]]
|
|
used_elsewhere = self.paths_used_by_other_domains()
|
|
return (
|
|
[path for path in own if path not in used_elsewhere],
|
|
[path for path in own if path in used_elsewhere],
|
|
)
|
|
|
|
def delete_all_disks(self):
|
|
self.refresh_instance_pools()
|
|
disks = self.get_disk_devices()
|
|
for disk in disks:
|
|
vol = self.get_volume_by_path(disk.get("path"))
|
|
vol.delete(0)
|
|
|
|
def _snapshotCreateXML(self, xml, flag):
|
|
self.instance.snapshotCreateXML(xml, flag)
|
|
|
|
def create_snapshot(self, name, desc=None):
|
|
state = "shutoff" if self.get_status() == 5 else "running"
|
|
name_esc = util.xml_escape(name)
|
|
desc_esc = util.xml_escape(desc) if desc else ""
|
|
xml = """<domainsnapshot>
|
|
<name>%s</name>
|
|
<description>%s</description>
|
|
<state>%s</state>
|
|
<creationTime>%d</creationTime>""" % (
|
|
name_esc,
|
|
desc_esc,
|
|
state,
|
|
time.time(),
|
|
)
|
|
# libvirt decides whether this firmware/NVRAM supports internal
|
|
# snapshots; the domain definition is never rewritten for it (R-13).
|
|
xml += self._XMLDesc(VIR_DOMAIN_XML_SECURE)
|
|
xml += """<active>0</active>
|
|
</domainsnapshot>"""
|
|
self._snapshotCreateXML(xml, 0)
|
|
|
|
def change_snapshot_xml(self):
|
|
try:
|
|
raw_xml = self._XMLDesc(VIR_DOMAIN_XML_SECURE)
|
|
tree = ElementTree.fromstring(raw_xml)
|
|
loader = tree.find("./os/loader")
|
|
if loader is not None and loader.get("type") == "pflash":
|
|
loader.set("type", "rom")
|
|
self._defineXML(ElementTree.tostring(tree, encoding="unicode"))
|
|
return True
|
|
return False
|
|
except Exception as e:
|
|
logger.error("Failed to change snapshot XML loader: %s", e)
|
|
raise
|
|
|
|
def recover_snapshot_xml(self):
|
|
try:
|
|
raw_xml = self._XMLDesc(VIR_DOMAIN_XML_SECURE)
|
|
tree = ElementTree.fromstring(raw_xml)
|
|
loader = tree.find("./os/loader")
|
|
if loader is not None and loader.get("type") == "rom":
|
|
loader.set("type", "pflash")
|
|
self._defineXML(ElementTree.tostring(tree, encoding="unicode"))
|
|
return True
|
|
return False
|
|
except Exception as e:
|
|
logger.error("Failed to recover snapshot XML loader: %s", e)
|
|
raise
|
|
|
|
def create_external_snapshot(self, name, date=None, desc=None):
|
|
creation_time = time.time()
|
|
state = "shutoff" if self.get_status() == 5 else "running"
|
|
name_esc = util.xml_escape(name)
|
|
desc_esc = util.xml_escape(desc) if desc else ""
|
|
#<seclabel type='none' model='dac' relabel='no'/>
|
|
xml = """<domainsnapshot>
|
|
<name>%s</name>
|
|
<description>%s</description>
|
|
<state>%s</state>
|
|
<creationTime>%d</creationTime>
|
|
""" % (
|
|
name_esc,
|
|
desc_esc,
|
|
state,
|
|
creation_time,
|
|
)
|
|
|
|
changed = self.change_snapshot_xml()
|
|
try:
|
|
xml += self._XMLDesc(VIR_DOMAIN_XML_SECURE)
|
|
xml += """<active>0</active>
|
|
</domainsnapshot>"""
|
|
|
|
self._snapshotCreateXML(xml, VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY)
|
|
finally:
|
|
if changed:
|
|
self.recover_snapshot_xml()
|
|
self.refresh_instance_pools()
|
|
|
|
def get_external_snapshots(self):
|
|
return self.get_snapshot(VIR_DOMAIN_SNAPSHOT_LIST_EXTERNAL)
|
|
|
|
def delete_external_snapshot(self, name):
|
|
disk_info = self.get_disk_devices()
|
|
for disk in disk_info:
|
|
target_dev = disk["dev"]
|
|
backing_file = disk["backing_file"]
|
|
snap_source_file = disk["path"]
|
|
self.instance.blockCommit(target_dev, backing_file, snap_source_file,
|
|
flags=VIR_DOMAIN_BLOCK_COMMIT_DELETE|
|
|
VIR_DOMAIN_BLOCK_COMMIT_ACTIVE)
|
|
while True:
|
|
info = self.instance.blockJobInfo(target_dev, 0)
|
|
if info.get('cur') == info.get('end'):
|
|
self.instance.blockJobAbort(target_dev,flags=VIR_DOMAIN_BLOCK_JOB_ABORT_PIVOT)
|
|
time.sleep(2)
|
|
break
|
|
# Check again pool for snapshot delta volume; if it exist, remove it manually
|
|
with contextlib.suppress(libvirtError):
|
|
vol_snap = self.get_volume_by_path(snap_source_file)
|
|
pool = vol_snap.storagePoolLookupByVolume()
|
|
pool.refresh(0)
|
|
vol_snap.delete(0)
|
|
|
|
snap = self.instance.snapshotLookupByName(name, 0)
|
|
snap.delete(VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY)
|
|
|
|
|
|
def revert_external_snapshot(self, name, date, desc):
|
|
snap = self.instance.snapshotLookupByName(name, 0)
|
|
snap_xml = snap.getXMLDesc(0)
|
|
snapXML = ElementTree.fromstring(snap_xml)
|
|
|
|
self.start(flags=VIR_DOMAIN_START_PAUSED) if self.get_status() == 5 else None
|
|
self.delete_all_disks()
|
|
|
|
self.force_shutdown()
|
|
|
|
snap.delete(VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY)
|
|
|
|
disks = snapXML.findall('inactiveDomain/devices/disk')
|
|
if not disks: disks = snapXML.findall('domain/devices/disk')
|
|
for disk in disks:
|
|
self.instance.updateDeviceFlags(ElementTree.tostring(disk).decode("UTF-8"))
|
|
name = name.replace("s1", "s2")
|
|
self.create_external_snapshot(name, date, desc)
|
|
|
|
def get_snapshot(self, flag=VIR_DOMAIN_SNAPSHOT_LIST_INTERNAL|VIR_DOMAIN_SNAPSHOT_LIST_EXTERNAL):
|
|
snapshots = []
|
|
snapshot_list = self.instance.snapshotListNames(flag)
|
|
for snapshot in snapshot_list:
|
|
snap = self.instance.snapshotLookupByName(snapshot, 0)
|
|
snap_description = util.get_xml_path(
|
|
snap.getXMLDesc(0), "/domainsnapshot/description"
|
|
)
|
|
snap_time_create = util.get_xml_path(
|
|
snap.getXMLDesc(0), "/domainsnapshot/creationTime"
|
|
)
|
|
snapshots.append(
|
|
{
|
|
"date": datetime.fromtimestamp(int(snap_time_create)),
|
|
"name": snapshot,
|
|
"description": snap_description,
|
|
}
|
|
)
|
|
return snapshots
|
|
|
|
def snapshot_delete(self, snapshot):
|
|
snap = self.instance.snapshotLookupByName(snapshot, 0)
|
|
snap.delete(0)
|
|
|
|
def snapshot_revert(self, snapshot):
|
|
snap = self.instance.snapshotLookupByName(snapshot, 0)
|
|
self.instance.revertToSnapshot(snap, 0)
|
|
|
|
def get_managed_save_image(self):
|
|
return self.instance.hasManagedSaveImage(0)
|
|
|
|
def get_wvmStorage(self, pool):
|
|
return wvmStorage(self.host, self.login, self.passwd, self.conn, pool)
|
|
|
|
def get_wvmStorages(self):
|
|
return wvmStorages(self.host, self.login, self.passwd, self.conn)
|
|
|
|
def refresh_instance_pools(self):
|
|
disks = self.get_disk_devices()
|
|
target_paths = set()
|
|
for disk in disks:
|
|
disk_path = disk.get("path")
|
|
target_paths.add(os.path.dirname(disk_path))
|
|
for target_path in target_paths:
|
|
self.get_wvmStorages().get_pool_by_target(target_path).refresh(0)
|
|
|
|
def fix_mac(self, mac):
|
|
if ":" in mac:
|
|
return mac
|
|
# if mac does not contain ":", try to split into tuples and join with ":"
|
|
n = 2
|
|
mac_tuples = [mac[i : i + n] for i in range(0, len(mac), n)]
|
|
return ":".join(mac_tuples)
|
|
|
|
def clone_instance(self, clone_data):
|
|
"""Copy a shut-off VM. Inputs are checked before anything is allocated,
|
|
and on failure only the volumes this call created are removed (R-08)."""
|
|
if self.get_status() != 5:
|
|
# A running guest keeps writing while its disks are copied.
|
|
raise util.OperationError("Shut the VM down before cloning it")
|
|
if clone_data["name"] in self.get_instances():
|
|
raise ValueError("An instance with the clone name already exists")
|
|
|
|
tree = etree.fromstring(self._XMLDesc(PERSISTENT_XML))
|
|
tree.find("name").text = clone_data["name"]
|
|
uuid = tree.find("uuid")
|
|
if uuid is None:
|
|
uuid = etree.SubElement(tree, "uuid")
|
|
uuid.text = util.randomUUID()
|
|
self._set_options(
|
|
tree,
|
|
{
|
|
"title": clone_data.get("clone-title", ""),
|
|
"description": clone_data.get("clone-description", ""),
|
|
},
|
|
)
|
|
|
|
disks = []
|
|
for disk in list(tree.findall("devices/disk")):
|
|
if disk.get("device") != "disk":
|
|
continue
|
|
source = disk.find("source")
|
|
if source is None or not any(source.get(key) for key in ("file", "dev", "name", "volume")):
|
|
disk.getparent().remove(disk)
|
|
continue
|
|
supported = source.get("file") or source.get("dev") or (
|
|
source.get("protocol") == "rbd" and source.get("name")
|
|
)
|
|
target = disk.find("target")
|
|
dev = target.get("dev") if target is not None else None
|
|
if not supported or not dev or not clone_data.get("disk-" + dev):
|
|
raise ValueError("Cannot clone a disk without a supported source and destination")
|
|
disks.append((source, dev))
|
|
|
|
for num, net in enumerate(tree.findall("devices/interface")):
|
|
mac = clone_data.get(f"clone-net-mac-{num}")
|
|
if not mac:
|
|
raise ValueError(f"No MAC address for network interface {num}")
|
|
net.find("mac").set("address", self.fix_mac(mac))
|
|
|
|
created = [] # paths of volumes this call created
|
|
try:
|
|
src_nvram_path = self.get_nvram()
|
|
if src_nvram_path:
|
|
nvram = tree.find("os/nvram")
|
|
nvram.getparent().remove(nvram)
|
|
|
|
# NVRAM CLONE: create pool if nvram is not in a pool. then clone it
|
|
src_nvram_name = os.path.basename(src_nvram_path)
|
|
nvram_dir = os.path.dirname(src_nvram_path)
|
|
nvram_pool_name = os.path.basename(nvram_dir)
|
|
try:
|
|
self.get_volume_by_path(src_nvram_path)
|
|
except libvirtError:
|
|
self.get_wvmStorages().create_storage("dir", nvram_pool_name, None, nvram_dir)
|
|
nvram_stg = self.get_wvmStorage(nvram_pool_name)
|
|
name = nvram_stg.clone_volume(src_nvram_name, f"{clone_data['name']}_VARS", file_suffix="fd")
|
|
created.append(os.path.join(nvram_dir, name))
|
|
|
|
for source, dev in disks:
|
|
target_file = clone_data["disk-" + dev]
|
|
meta_prealloc = bool(clone_data.get("meta-" + dev))
|
|
if source.get("file"):
|
|
vol = self.get_volume_by_path(source.get("file"))
|
|
vol_format = util.get_xml_path(vol.XMLDesc(0), "/volume/target/format/@type")
|
|
new_vol = vol.storagePoolLookupByVolume().createXMLFrom(
|
|
f"""<volume>
|
|
<name>{target_file}</name>
|
|
<capacity>0</capacity>
|
|
<allocation>0</allocation>
|
|
<target>
|
|
<format type='{vol_format}'/>
|
|
<permissions>
|
|
<owner>{clone_data['disk_owner_uid']}</owner>
|
|
<group>{clone_data['disk_owner_gid']}</group>
|
|
<mode>0644</mode>
|
|
<label>virt_image_t</label>
|
|
</permissions>
|
|
<compat>1.1</compat>
|
|
<features><lazy_refcounts/></features>
|
|
</target>
|
|
</volume>""",
|
|
vol,
|
|
meta_prealloc and vol_format == "qcow2",
|
|
)
|
|
created.append(new_vol.path())
|
|
source.set("file", new_vol.path())
|
|
elif source.get("protocol") == "rbd":
|
|
vol = self.get_volume_by_path(source.get("name"))
|
|
vol_format = util.get_xml_path(vol.XMLDesc(0), "/volume/target/format/@type")
|
|
new_vol = vol.storagePoolLookupByVolume().createXMLFrom(
|
|
f"""<volume type='network'>
|
|
<name>{target_file}</name>
|
|
<capacity>0</capacity>
|
|
<allocation>0</allocation>
|
|
<target><format type='{vol_format}'/></target>
|
|
</volume>""",
|
|
vol,
|
|
meta_prealloc,
|
|
)
|
|
created.append(new_vol.path())
|
|
source.set("name", f"{os.path.dirname(source.get('name'))}/{target_file}")
|
|
else:
|
|
vol = self.get_volume_by_path(source.get("dev"))
|
|
pool_name = util.get_xml_path(vol.storagePoolLookupByVolume().XMLDesc(0), "/pool/name")
|
|
storage = self.get_wvmStorage(pool_name)
|
|
name = storage.clone_volume(vol.name(), target_file)
|
|
new_path = storage.get_volume(name).path()
|
|
created.append(new_path)
|
|
source.set("dev", new_path)
|
|
|
|
self._defineXML(etree.tostring(tree).decode())
|
|
except Exception as err:
|
|
leftovers = []
|
|
for path in reversed(created):
|
|
try:
|
|
self.get_volume_by_path(path).delete(0)
|
|
except libvirtError:
|
|
leftovers.append(path)
|
|
if leftovers:
|
|
raise util.OperationError(f"Clone failed ({err}); remove these copies by hand: {', '.join(leftovers)}") from err
|
|
raise
|
|
|
|
return self.get_instance(clone_data["name"]).UUIDString()
|
|
|
|
def get_bridge_name(self, source, source_type="net"):
|
|
if source_type == "iface":
|
|
iface = self.get_iface(source)
|
|
bridge_name = iface.name()
|
|
else:
|
|
net = self.get_network(source)
|
|
try:
|
|
bridge_name = net.bridgeName()
|
|
except libvirtError:
|
|
bridge_name = None
|
|
return bridge_name
|
|
|
|
def add_network(
|
|
self, mac_address, source, source_type="net", model="virtio", nwfilter=None
|
|
):
|
|
|
|
if source_type == "net":
|
|
interface_type = "network"
|
|
elif source_type == "bridge":
|
|
interface_type = "bridge"
|
|
else:
|
|
interface_type = "direct"
|
|
|
|
# Built with lxml so posted values are escaped, never parsed as XML.
|
|
iface = etree.Element("interface", type=interface_type)
|
|
if mac_address: # otherwise libvirt generates one
|
|
etree.SubElement(iface, "mac", address=mac_address)
|
|
if interface_type == "network":
|
|
etree.SubElement(iface, "source", network=source)
|
|
elif interface_type == "direct":
|
|
etree.SubElement(iface, "source", dev=source, mode="bridge")
|
|
else:
|
|
etree.SubElement(iface, "source", bridge=source)
|
|
if model:
|
|
etree.SubElement(iface, "model", type=model)
|
|
if nwfilter:
|
|
etree.SubElement(iface, "filterref", filter=nwfilter)
|
|
xml_iface = etree.tostring(iface).decode()
|
|
|
|
if self.get_status() == 1:
|
|
self.instance.attachDeviceFlags(xml_iface, VIR_DOMAIN_AFFECT_LIVE)
|
|
self.instance.attachDeviceFlags(xml_iface, VIR_DOMAIN_AFFECT_CONFIG)
|
|
if self.get_status() == 5:
|
|
self.instance.attachDeviceFlags(xml_iface, VIR_DOMAIN_AFFECT_CONFIG)
|
|
|
|
def delete_network(self, mac_address):
|
|
tree = ElementTree.fromstring(self._XMLDesc(0))
|
|
for interface in tree.findall("devices/interface"):
|
|
source = interface.find("mac")
|
|
if source.get("address", "") == mac_address:
|
|
new_xml = ElementTree.tostring(interface).decode()
|
|
|
|
if self.get_status() == 1:
|
|
self.instance.detachDeviceFlags(new_xml, VIR_DOMAIN_AFFECT_LIVE)
|
|
self.instance.detachDeviceFlags(new_xml, VIR_DOMAIN_AFFECT_CONFIG)
|
|
if self.get_status() == 5:
|
|
self.instance.detachDeviceFlags(new_xml, VIR_DOMAIN_AFFECT_CONFIG)
|
|
return new_xml
|
|
return None
|
|
|
|
def change_network(self, old_mac, mac, source, source_type, model, nwfilter):
|
|
"""Replace the NIC with old_mac; put it back if the new one cannot be added."""
|
|
old_xml = self.delete_network(old_mac)
|
|
if old_xml is None:
|
|
raise util.OperationError(f"No network interface with MAC {old_mac}")
|
|
try:
|
|
self.add_network(mac, source, source_type, model, nwfilter)
|
|
except libvirtError:
|
|
if self.get_status() == 1:
|
|
self.instance.attachDeviceFlags(old_xml, VIR_DOMAIN_AFFECT_LIVE)
|
|
self.instance.attachDeviceFlags(old_xml, VIR_DOMAIN_AFFECT_CONFIG)
|
|
if self.get_status() == 5:
|
|
self.instance.attachDeviceFlags(old_xml, VIR_DOMAIN_AFFECT_CONFIG)
|
|
raise
|
|
|
|
def change_network_oldway(self, network_data):
|
|
"""
|
|
change network firsh version...
|
|
will be removed if new one works as expected for all scenarios
|
|
"""
|
|
xml = self._XMLDesc(VIR_DOMAIN_XML_SECURE)
|
|
tree = ElementTree.fromstring(xml)
|
|
for num, interface in enumerate(tree.findall("devices/interface")):
|
|
net_mac = network_data.get("net-mac-" + str(num))
|
|
if net_mac is None:
|
|
continue
|
|
net_source = network_data.get("net-source-" + str(num))
|
|
net_source_type = network_data.get("net-source-" + str(num) + "-type")
|
|
net_filter = network_data.get("net-nwfilter-" + str(num))
|
|
net_model = network_data.get("net-model-" + str(num))
|
|
|
|
source = interface.find("source")
|
|
if interface.get("type") == "bridge":
|
|
bridge_name = self.get_bridge_name(net_source, net_source_type)
|
|
source.set("bridge", bridge_name)
|
|
elif interface.get("type") in ["network", "direct"]:
|
|
if net_source_type == "net":
|
|
source.set("network", net_source)
|
|
elif net_source_type == "iface":
|
|
source.set("dev", net_source)
|
|
else:
|
|
raise util.OperationError(
|
|
"Unknown network type: {}".format(net_source_type)
|
|
)
|
|
else:
|
|
raise util.OperationError(
|
|
"Unknown network type: {}".format(interface.get("type"))
|
|
)
|
|
|
|
source = interface.find("model")
|
|
if net_model != "default":
|
|
source.attrib["type"] = net_model
|
|
else:
|
|
interface.remove(source)
|
|
|
|
source = interface.find("mac")
|
|
source.set("address", net_mac)
|
|
source = interface.find("filterref")
|
|
if net_filter:
|
|
if source is not None:
|
|
source.set("filter", net_filter)
|
|
else:
|
|
element = ElementTree.Element("filterref")
|
|
element.attrib["filter"] = net_filter
|
|
interface.append(element)
|
|
else:
|
|
if source is not None:
|
|
interface.remove(source)
|
|
|
|
new_xml = ElementTree.tostring(tree).decode()
|
|
self._defineXML(new_xml)
|
|
|
|
def set_link_state(self, mac_address, state):
|
|
tree = etree.fromstring(self._XMLDesc(0))
|
|
for interface in tree.findall("devices/interface"):
|
|
source = interface.find("mac")
|
|
if source.get("address") == mac_address:
|
|
link = interface.find("link")
|
|
if link is not None:
|
|
interface.remove(link)
|
|
link_el = etree.Element("link")
|
|
link_el.attrib["state"] = state
|
|
interface.append(link_el)
|
|
new_xml = etree.tostring(interface).decode()
|
|
if self.get_status() == 1:
|
|
self.instance.updateDeviceFlags(new_xml, VIR_DOMAIN_AFFECT_LIVE)
|
|
self.instance.updateDeviceFlags(new_xml, VIR_DOMAIN_AFFECT_CONFIG)
|
|
if self.get_status() == 5:
|
|
self.instance.updateDeviceFlags(new_xml, VIR_DOMAIN_AFFECT_CONFIG)
|
|
|
|
def _set_options(self, tree, options):
|
|
for o in ["title", "description"]:
|
|
option = tree.find(o)
|
|
option_value = options.get(o, "").strip()
|
|
if not option_value:
|
|
if option is not None:
|
|
tree.remove(option)
|
|
else:
|
|
if option is None:
|
|
option = etree.SubElement(tree, o)
|
|
option.text = option_value
|
|
|
|
def set_options(self, options):
|
|
"""
|
|
Function change description, title
|
|
"""
|
|
xml = self._XMLDesc(PERSISTENT_XML)
|
|
tree = etree.fromstring(xml)
|
|
|
|
self._set_options(tree, options)
|
|
new_xml = etree.tostring(tree).decode()
|
|
self._defineXML(new_xml)
|
|
|
|
def set_memory(self, size, flags=0):
|
|
self.instance.setMemoryFlags(size, flags)
|
|
|
|
def get_all_qos(self):
|
|
qos_values = dict()
|
|
tree = etree.fromstring(self._XMLDesc(0))
|
|
qos = tree.xpath("/domain/devices/interface")
|
|
|
|
for q in qos:
|
|
bound_list = list()
|
|
mac = q.xpath("mac/@address")
|
|
band = q.find("bandwidth")
|
|
if band is not None:
|
|
in_qos = band.find("inbound")
|
|
if in_qos is not None:
|
|
in_av = in_qos.get("average")
|
|
in_peak = in_qos.get("peak")
|
|
in_burst = in_qos.get("burst")
|
|
in_floor = in_qos.get("floor")
|
|
bound_list.append(
|
|
{
|
|
"direction": "inbound",
|
|
"average": in_av,
|
|
"peak": in_peak,
|
|
"floor": in_floor,
|
|
"burst": in_burst,
|
|
}
|
|
)
|
|
|
|
out_qos = band.find("outbound")
|
|
if out_qos is not None:
|
|
out_av = out_qos.get("average")
|
|
out_peak = out_qos.get("peak")
|
|
out_burst = out_qos.get("burst")
|
|
bound_list.append(
|
|
{
|
|
"direction": "outbound",
|
|
"average": out_av,
|
|
"peak": out_peak,
|
|
"burst": out_burst,
|
|
}
|
|
)
|
|
qos_values[mac[0]] = bound_list
|
|
return qos_values
|
|
|
|
def set_qos(self, mac, direction, average, peak, burst):
|
|
if direction not in ("inbound", "outbound"):
|
|
raise ValueError("Direction must be inbound or outbound")
|
|
|
|
average = int(average)
|
|
peak = int(peak)
|
|
burst = int(burst)
|
|
|
|
if direction == "inbound":
|
|
xml = f"<inbound average='{average}' peak='{peak}' burst='{burst}'/>"
|
|
else:
|
|
xml = f"<outbound average='{average}' peak='{peak}' burst='{burst}'/>"
|
|
|
|
tree = etree.fromstring(self._XMLDesc(PERSISTENT_XML))
|
|
|
|
macs = tree.xpath("/domain/devices/interface/mac")
|
|
for cur_mac in macs:
|
|
|
|
if cur_mac.get("address") == mac:
|
|
interface = cur_mac.getparent()
|
|
band = interface.find("bandwidth")
|
|
if band is None:
|
|
xml = "<bandwidth>" + xml + "</bandwidth>"
|
|
interface.append(etree.fromstring(xml))
|
|
else:
|
|
direct = band.find(direction)
|
|
if direct is not None:
|
|
parent = direct.getparent()
|
|
parent.remove(direct)
|
|
parent.append(etree.fromstring(xml))
|
|
else:
|
|
band.append(etree.fromstring(xml))
|
|
new_xml = etree.tostring(tree).decode()
|
|
self.wvm.defineXML(new_xml)
|
|
|
|
def unset_qos(self, mac, direction):
|
|
tree = etree.fromstring(self._XMLDesc(PERSISTENT_XML))
|
|
for direct in tree.xpath(
|
|
"/domain/devices/interface/bandwidth/{}".format(direction)
|
|
):
|
|
band_el = direct.getparent()
|
|
interface_el = (
|
|
band_el.getparent()
|
|
) # parent bandwidth,its parent is interface
|
|
parent_mac = interface_el.xpath("mac/@address")
|
|
if parent_mac[0] == mac:
|
|
band_el.remove(direct)
|
|
|
|
self.wvm.defineXML(etree.tostring(tree).decode())
|
|
|
|
def add_guest_agent(self):
|
|
channel_xml = """
|
|
<channel type='unix'>
|
|
<target type='virtio' name='org.qemu.guest_agent.0'/>
|
|
</channel>
|
|
"""
|
|
if self.get_status() == 1:
|
|
self.instance.attachDeviceFlags(channel_xml, VIR_DOMAIN_AFFECT_LIVE)
|
|
self.instance.attachDeviceFlags(channel_xml, VIR_DOMAIN_AFFECT_CONFIG)
|
|
if self.get_status() == 5:
|
|
self.instance.attachDeviceFlags(channel_xml, VIR_DOMAIN_AFFECT_CONFIG)
|
|
|
|
def remove_guest_agent(self):
|
|
tree = etree.fromstring(self._XMLDesc(0))
|
|
for target in tree.xpath(
|
|
"/domain/devices/channel[@type='unix']/target[@name='org.qemu.guest_agent.0']"
|
|
):
|
|
parent = target.getparent()
|
|
channel_xml = etree.tostring(parent).decode()
|
|
if self.get_status() == 1:
|
|
self.instance.detachDeviceFlags(channel_xml, VIR_DOMAIN_AFFECT_LIVE)
|
|
self.instance.detachDeviceFlags(channel_xml, VIR_DOMAIN_AFFECT_CONFIG)
|
|
if self.get_status() == 5:
|
|
self.instance.detachDeviceFlags(channel_xml, VIR_DOMAIN_AFFECT_CONFIG)
|
|
|
|
def get_guest_agent(self):
|
|
def _get_agent(doc):
|
|
"""
|
|
Return agent channel object if it is defined.
|
|
"""
|
|
for channel in doc.xpath("/domain/devices/channel"):
|
|
ch_type = channel.get("type")
|
|
target = channel.find("target")
|
|
target_name = target.get("name")
|
|
if ch_type == "unix" and target_name == "org.qemu.guest_agent.0":
|
|
return channel
|
|
return None
|
|
|
|
return util.get_xml_path(self._XMLDesc(0), func=_get_agent)
|
|
|
|
def is_agent_ready(self):
|
|
"""
|
|
Return connected state of an agent.
|
|
"""
|
|
# we need to get a fresh agent channel object on each call so it
|
|
# reflects the current state
|
|
dev = self.get_guest_agent()
|
|
if dev is not None:
|
|
states = dev.xpath("target/@state")
|
|
state = states[0] if len(states) > 0 else ""
|
|
if state == "connected":
|
|
return True
|
|
return False
|