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Latest revisions

# Date Author Comment
9754d1b7 12/11/2013 02:53 pm 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....
ee6ed186 12/11/2013 02:53 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,...
d6fb3aea 12/11/2013 02:53 pm 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 <>...
6cc47318 12/11/2013 02:53 pm Dimitris Aragiorgis

(2.10) Use -device with pci info if possible

Extend kvm_cmd with -device option for the case of paravirual
Disks and NICs.

Signed-off-by: Dimitris Aragiorgis <>
Signed-off-by: Thomas Thrainer <>
Reviewed-by: Thomas Thrainer <>...
a8c33da7 12/11/2013 02:53 pm 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)...
02d7b9ae 12/11/2013 02:53 pm Dimitris Aragiorgis

(2.10) Helper methods for PCI slots and device ids

Device naming:
QEMU monitor expects devices to be uniquely named. Device ids derive
from the following function:
kvm_devid = <device_type>-<part of uuid>-pci-<pci_slot>
Device ids must be reproduce-able when we want to remove them....
8b1ebecb 12/11/2013 02:53 pm Dimitris Aragiorgis

(fix) Remove uri slot from block_devices

In stable-2.10 we have userspace access mode for rbd. Backend
calculates uri along with link and dev_path. Thus we have
three items in block_devices and kvm_disks tuples.

We this patch we remove the third value.
...
da8c6616 12/11/2013 02:53 pm Dimitris Aragiorgis

(2.10) Prepare kvm options to support -device for disks

Newer kvm version support -device driver,... option where available
drivers can be found by running kvm -device ? command. Currently
ganeti uses `if` property of driver to define the disk type to use...
204e695c 12/11/2013 02:53 pm Dimitris Aragiorgis

(2.10) Prepare block_devices runtime entry

With this patch we add another entry in runtime files along with
kvm_cmd, kvm_nics, and hvparams. block_devices that used to be
encapsulated inside kvm_cmd, live now separately just like nics do
but in tupples of (L{objects.Disk}, dev_path)....
cd4aa136 12/11/2013 02:53 pm Dimitris Aragiorgis

(2.10) Introduce _GenerateKVMBlockDevicesOptions()

Simply move logic that generates block device related
options out of _GenerateKVMRuntime().

NOTE: Back-port corresponding commit from stable-2.10

- 2.8 does not have user-space access support for rbd

Signed-off-by: Dimitris Aragiorgis <>

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