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Latest revisions

# Date Author Comment
3b4a9bba 03/20/2014 12:49 pm 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....
2400eba6 03/20/2014 12:49 pm 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....
2aa8c093 03/20/2014 12:49 pm Dimitris Aragiorgis

(2.10) Add unittests for Hotplug support

Try base InstanceSetParams tests that modify instance's
devices with hotplug=True.

Add some unittests for kvm hypervisor regarding runtime file
manipulation. Based on a sample runtime file search for
specific disk and nic entries based on their UUID....
4edaf707 03/20/2014 12:49 pm Dimitris Aragiorgis

(2.10) Extend qa to test hotplug support

Only if default hypervisor is KVM try all hotplug related actions.

Signed-off-by: Dimitris Aragiorgis <>
Signed-off-by: Thomas Thrainer <>
Reviewed-by: Thomas Thrainer <>
0d69cb01 03/20/2014 12:49 pm Dimitris Aragiorgis

(2.10) Hotplug: Update manpages and NEWS

Add --hotplug entry in gnt-instance manpage.
Add NEWS entry for hotplug support.
In both cases mention that hotplug is only supported for
the KVM Hypervisor version >= 1.0.

Signed-off-by: Dimitris Aragiorgis <>...
489a70b8 03/20/2014 12:49 pm Dimitris Aragiorgis

(2.10) Hotplug: client support

Add --hotplug option. Only used in OpInstanceSetParams.
If this is omitted, modifications become effective after reboot.

Ask user confirmation in case NIC modify + hotplug because it will
be done via removing old NIC (and the corresponding tap) and adding...
22299c5d 03/20/2014 12:49 pm Dimitris Aragiorgis

(fix) SetDiskID() before blockdev_assemble()

Before blockdev_assemble we call SetDiskID() in order to fill up
physical_id of disk needed by bdev.Assemble and eventually by
constructor of each BlockDev.

This is not needed in 2.10 since physical_id has become deprecated....
44e08911 03/20/2014 12:49 pm Dimitris Aragiorgis

(2.10) Hotplug: cmdlib support

Hotplugging is done by functions invoked by ApplyContainerMods(). In
order hotplugging to take place the --hotplug option must be passed
otherwise the modifications will take place after reboot.

NIC hotplug supports add, remove and modify. The modify is done by removing...
c1398e4a 03/20/2014 12:49 pm 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,...
fe1ae444 03/20/2014 12:49 pm Dimitris Aragiorgis

(2.10) Return link_name in blockdev_assemble rpc

Until now this RPC returned only dev_path. Since we use it in
hotplug we have to know the simlink of the device so that we
pass it to the corresponding hypervisor command and include it
in block_devices entry in runtime files....

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