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root / lib / hypervisor @ 4eb33085

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__init__.py 2 kB
hv_base.py 19 kB
hv_chroot.py 10.6 kB
hv_fake.py 10.4 kB
hv_kvm.py 94.4 kB
hv_lxc.py 15.6 kB
hv_xen.py 38.1 kB

Latest revisions

# Date Author Comment
4eb33085 03/27/2014 09:58 am Dimitris Aragiorgis

(2.10) Introduce --hotplug-if-possible option

This will be useful for an external entity using RAPI that
wants to modify devices of instances.

The common use case for that is:
"I want to add a NIC/disk to an instance. If it is running
then try to hotplug the device. If not, then just add it to config."...
75b21ca0 03/27/2014 09:57 am Dimitris Aragiorgis

(2.10) Check if hotplug is supported in CheckPrereq

Introduce new RPC hotplug_supported that invokes the corresponding
hypervisor's method which checks if hotplug is generally
supported. Call this RPC early in CheckPrereq() and abort if
hotplug is not supported. Currently only KVM hypervisor with...
a1764192 03/27/2014 09:57 am Dimitris Aragiorgis

(2.10) drive_del after device_del in disk hot-remove

This is needed so that qemu process really releases the
corresponding file descriptor and thus we can dmsetup/lvremove
the device without errors.

Signed-off-by: Dimitris Aragiorgis <>
Signed-off-by: Thomas Thrainer <>...
a80a1d16 03/27/2014 09:57 am Dimitris Aragiorgis

(2.10) block_devices -> kvm_disks renaming

and a couple more styple fixes.
block_devices are misleading so rename them to kvm_disk (just like kvm_nics)

Signed-off-by: Dimitris Aragiorgis <>
Signed-off-by: Thomas Thrainer <>...
68169c48 03/27/2014 09:57 am Dimitris Aragiorgis

(2.10) Make hotplug related method raise HotplugError

Hotplug is not supported by default and thus we raise
HotplugError() for hotplug related methods.
If a hypervisor wants to support it, we must override VerifyHotplugSupport()
and implement the Hot* method....
df07c18f 03/27/2014 09:56 am Dimitris Aragiorgis

(2.10) Some fixes in _GenerateKVMBlockDevicesOptions()

  • Add docstring.
  • fix missed usecase of boot_disk=False if kernel_path is given.
  • Use devlist arg in GenerateKVMBlockDeviceOptions()
    This is previously calculated in _ExecuteKVMRuntime()
    so there is no need to rerun the same command....
3ae003d8 03/27/2014 09:56 am Dimitris Aragiorgis

(2.10) Hotplug: rpc support

Introduce new RPC that eventually invoke hypervisor specific
hotplug functions. In order to be generic it has the following
arguments: device type, action, device, extra info, seq.
Device type can be NIC or DISK, action can be ADD, REMOVE,...
878ddc80 03/27/2014 09:56 am Dimitris Aragiorgis

(2.10) Introduce hotplug methods (hypervisor inteface)

4 new methods: HotAddDevice, HotDelDevice, HotModDevice, HotplugSupported
All these are the hypervisor interface with the backend.
In general they read current runtime info, do the actual hotplug
and update the runtime file....
ce0248c6 03/27/2014 09:56 am Dimitris Aragiorgis

(2.10) Extract socket related code from QmpMonitor class

Separate unix socket related code from QmpMonitor class and
make the latter extend the newly introduced one: MonitorSocket

Signed-off-by: Dimitris Aragiorgis <>
Signed-off-by: Thomas Thrainer <>...
a05ff8a2 03/27/2014 09:56 am Dimitris Aragiorgis

(2.10) Helper methods that check for hotplug support

Hotplug is currently not supported for:

- KVM < 1.0
 - existing devices in the cluster
 - python-fdsend module is not installed (NIC hotplug)
 - chroot (Disk hotplug)
 - security mode other than None (Disk hotplug)...

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