libvirt support for LXC

[Kunal Kushwaha <kunalkushwahaoss@xxxxxxxxx>]

Hi,

I am new to this community and am not much aware of current status libvirt work for LXC.

Currently I am evaluating LXC with libvirt.

and I found still many features like checkpoint/restore/live migration , Attach storage device etc are not implemented.

Is there any work going on these feature? or any plan or Roadmap?

Following is a table showing libvirt functionality support for LXC.

Please feel free to comment in case, I am wrong or tested not propely the libvirt and marked some working feature as not working for LXC.

Sr. No.	Command Name	Description (brief)	Status (working or not)
01	autostart	Enable and disable the automatic starting of a guest domain when the libvirt daemon starts.	ₒ
02	Console	connect to the virtual serial console for the guest.	ₒ
03	create	creates a guest domain from an xml file # does not work. gives error.	-
04	Define	defines but doesnt start a guest domain from an xml file	○
05	destroy	immediately terminates a running guest domain and releases any resources in use by it. Not to be used lightly	○
06	attach-disk  / detach-disk	attach or detach a disk device Note : Doesnt work. maybe i am doing something wrong.	-
07	domjobinfo	info about running guest domain jobs	-
08	domjobabort	aborts current running guest domain job	-
09	Dump	Core dump a guest domain	-
10	managedsave / managedsave-remove	Save and destroy a running guest domain, so it can be restarted from the same state at a later time. When the virsh start command is next run for the guest domain, it will automatically be started from this saved state	-
11	Migrate **	migrates a guest domain to another host
12	Reboot	Runs a reboot in the guest domain	-
13	Restore	restores a guest domain	-
14	Resume	resumes a guest domain	○
15	Save	saves the running state of a guest domain to a file.	-
16	shutdown	runs shutdown in a guest domain	-
17	Start	starts a guest domain either form a last managedsave or via a fresh boot if no managed save is present	○
18	Update-device	update device from an XML file	-
19	virt-viewer	display a vnc type interface to running domain	○
20	maxvcpus	show maximum number of virtual CPUs for guest domains on this connection	-
21	memtune	gets or sets the current memory parameters for a guest domain	○
22	schedinfo	show or set scheduler parameters	○
23	setmaxmem	change the maximum memory allocation limit in the guest domain	○
24	setmem	change the current memory allocation in the guest domain	○
25	setvcpus	change the number of virtual cpus in the guest domain	-
26	vcpuinfo	returns basic info about the guest domains virtual CPU's	-
27	dominfo	displays some basic information about the domain specified	○
28	dommemstat	displays info about the memory statistics of the domain	-
29	domblkinfo	gets the block device size or a guest domain	○
30	domblkstat	gets device block stats for a running guest domain	○
31	domifstat	gets network interface stat for a running guest domain	○
32	dominfo	gets basic information about a guest domain	○
33	dommemstat	gets memory statistics for a running guest domain	○
34	domstate	returns the state of a guest domain i.e. whether running etc	○
35	list	returns a list of guest domains	○
36	Capabilities	returns the capabilities of the host and guest in xml format	○
37	freecell	Display available free memory for a NUMA cell	○
38	hostname	Display the name of the hypervisor host	○
39	nodeinfo	Returns basic information about the node	○
40	iface-define	define a physical host network interface. The file expected is of the type xml. We have an example of how it is executed.	○
41	iface-destroy	shutsdown and siables a physical host network device	○
42	iface-dumpxml	Output information for a physical host network interface, as an XML dump to stdout	○
43	iface-list	Returns a list of physical host network interfaces	○
44	iface-start	Enables and starts a physical host network interface	○
45	iface-undefine	Removes the configuration information for a physical host network interface	○
46	net-autostart	Enable or disable the automatic starting of a virtual network, when the libvirt daemon starts	○
47	net-define	Adds a new permanent virtual network from an XML file, without starting it	○
48	net-dumpxml	Displays the XML configuration for a virtual network (to stdout)	○
49	net-edit	opens the network config xml for editing by user.	○
50	net-info	displays basic information about a network	○
51	net-start	starts a network	○
52	net-undefine	undefines a network from the configuration file.	○
53	Domain snapshot commands (multiple)	Does not work with LXC.	-

Thanks & Regards,

Kunal Kushwaha

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