Package ganeti :: Package hypervisor :: Package hv_kvm

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Package hv_kvm

source code

KVM hypervisor

Submodules

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ganeti.hypervisor.hv_kvm.monitor: Qemu monitor control classes
ganeti.hypervisor.hv_kvm.netdev: KVM hypervisor tap device helpers

Classes

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HeadRequest

KVMHypervisor
KVM hypervisor interface

Functions

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_with_qmp(fn)
Wrapper used on hotplug related methods

source code

_GetDriveURI(disk, link, uri)
Helper function to get the drive uri to be used in --drive kvm option

source code

_GenerateDeviceKVMId(dev_type, dev)
Helper function to generate a unique device name used by KVM

source code

_GetExistingDeviceInfo(dev_type, device, runtime)
Helper function to get an existing device inside the runtime file

source code

tuple

_UpgradeSerializedRuntime(serialized_runtime)
Upgrade runtime data

source code

tuple

_AnalyzeSerializedRuntime(serialized_runtime)
Return runtime entries for a serialized runtime file

source code

_CheckUrl(url)
Check if a given URL exists on the server

source code

Variables

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psutil = None
hash(x)

fdsend = None
hash(x)

_KVM_NETWORK_SCRIPT = pathutils.CONF_DIR+ "/kvm-vif-bridge"

_KVM_START_PAUSED_FLAG = "-S"

_SPICE_ADDITIONAL_PARAMS = frozenset([constants.HV_KVM_SPICE_I...
SPICE parameters which depend on constants.HV_KVM_SPICE_BIND

_KVM_NICS_RUNTIME_INDEX = 1

_KVM_DISKS_RUNTIME_INDEX = 3

_DEVICE_RUNTIME_INDEX = {constants.HOTPLUG_TARGET_DISK: _KVM_D...

_FIND_RUNTIME_ENTRY = {constants.HOTPLUG_TARGET_NIC: lambda ni...

_RUNTIME_DEVICE = {constants.HOTPLUG_TARGET_NIC: lambda d: d, ...

_RUNTIME_ENTRY = {constants.HOTPLUG_TARGET_NIC: lambda d, e: d...

_MIGRATION_CAPS_DELIM = ":"

Imports: errno, os, re, tempfile, time, logging, pwd, shutil, urllib2, bitarray, utils, constants, errors, serializer, objects, uidpool, ssconf, netutils, pathutils, hv_base, utils_wrapper, QmpConnection, QmpMessage, MonitorSocket, OpenTap

Function Details

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_GetDriveURI(disk, link, uri)

source code

Helper function to get the drive uri to be used in --drive kvm option

Invoked during startup and disk hot-add. In latter case and if no userspace access mode is used it will be overriden with /dev/fdset/<fdset-id> (see HotAddDisk() and AddFd() of QmpConnection).

Parameters:

disk (objects.Disk) - A disk configuration object
link (string) - The device link as returned by _SymlinkBlockDev()
uri (string) - The drive uri as returned by _CalculateDeviceURI()

Returns:

The drive uri to use in kvm option

_GenerateDeviceKVMId(dev_type, dev)

source code

Helper function to generate a unique device name used by KVM

QEMU monitor commands use names to identify devices. Here we use their pci slot and a part of their UUID to name them. dev.pci might be None for old devices in the cluster.

Parameters:

dev_type (sting) - device type of param dev
dev (objects.Disk or objects.NIC) - the device object for which we generate a kvm name

Raises:

errors.HotplugError - in case a device has no pci slot (old devices)

_GetExistingDeviceInfo(dev_type, device, runtime)

source code

Helper function to get an existing device inside the runtime file

Used when an instance is running. Load kvm runtime file and search for a device based on its type and uuid.

Parameters:

dev_type (sting) - device type of param dev
device (objects.Disk or objects.NIC) - the device object for which we generate a kvm name
runtime (tuple (cmd, nics, hvparams, disks)) - the runtime data to search for the device

Raises:

errors.HotplugError - in case the requested device does not exist (e.g. device has been added without --hotplug option) or device info has not pci slot (e.g. old devices in the cluster)

_UpgradeSerializedRuntime(serialized_runtime)

source code

Upgrade runtime data

Remove any deprecated fields or change the format of the data. The runtime files are not upgraded when Ganeti is upgraded, so the required modification have to be performed here.

Parameters:

serialized_runtime (string) - raw text data read from actual runtime file

Returns: tuple

(cmd, nic dicts, hvparams, bdev dicts)

_AnalyzeSerializedRuntime(serialized_runtime)

source code

Return runtime entries for a serialized runtime file

Parameters:

serialized_runtime (string) - raw text data read from actual runtime file

Returns: tuple

(cmd, nics, hvparams, bdevs)

Variables Details

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_SPICE_ADDITIONAL_PARAMS

SPICE parameters which depend on constants.HV_KVM_SPICE_BIND

Value:

frozenset([constants.HV_KVM_SPICE_IP_VERSION, constants.HV_KVM_SPICE_P
ASSWORD_FILE, constants.HV_KVM_SPICE_LOSSLESS_IMG_COMPR, constants.HV_
KVM_SPICE_JPEG_IMG_COMPR, constants.HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR, c
onstants.HV_KVM_SPICE_STREAMING_VIDEO_DETECTION, constants.HV_KVM_SPIC
E_USE_TLS,])

_DEVICE_RUNTIME_INDEX

Value:

{constants.HOTPLUG_TARGET_DISK: _KVM_DISKS_RUNTIME_INDEX, constants.HO
TPLUG_TARGET_NIC: _KVM_NICS_RUNTIME_INDEX}

_FIND_RUNTIME_ENTRY

Value:

{constants.HOTPLUG_TARGET_NIC: lambda nic, kvm_nics: [n for n in kvm_n
ics if n.uuid== nic.uuid], constants.HOTPLUG_TARGET_DISK: lambda disk,
 kvm_disks: [(d, l, u) for(d, l, u) in kvm_disks if d.uuid== disk.uuid
]}

_RUNTIME_DEVICE

Value:

{constants.HOTPLUG_TARGET_NIC: lambda d: d, constants.HOTPLUG_TARGET_D
ISK: lambda(d, e, _): d}

_RUNTIME_ENTRY

Value:

{constants.HOTPLUG_TARGET_NIC: lambda d, e: d, constants.HOTPLUG_TARGE
T_DISK: lambda d, e:(d, e [0], e [1])}