Archived/Xen Roadmap/4.3
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Proposed timeline
We are planning on a 9-month release cycle. Based on that, below are our estimated dates:
- Feature Freeze: 1 March, 2013
- First RC: 15 April 2013
- Release: 1 June 2013
The RCs and release will of course depend on stability and bugs, and will therefore be fairly unpredictable. The feature freeze may be slipped for especially important features which are near completion.
Feature list
Below is a list of features we're tracking for this release. If you have updates to a tracked feature you are working on, or are working on a feature and wish it to be tracked, please let me know.
* Event channel scalability
owner: attilio@citrix
status: ?
Increase limit on event channels (currently 1024 for 32-bit guests,
4096 for 64-bit guests)
* NUMA scheduler affinity
owner: dario@citrix
* NUMA Memory migration
owner: dario@citrix
* PVH mode, domU (w/ Linux)
owner: mukesh@oracle
* PVH mode, dom0 (w/ Linux)
owner: mukesh@oracle
* ARM server port
owner: ijc@citrix
* blktap3
owner: @citrix
* Default to QEMU upstream
- qemu-based stubdom (Linux or BSD libc)
owner: anthony@citrix
qemu-upstream needs a more fully-featured libc than exists in
minios. Either work on a minimalist linux-based stubdom with
glibc, or port one of the BSD libcs to minios.
- pci pass-thru
owner: anthony@citrix
* Persistent grants
owner: @citrix
* Multi-page blk rings
- blkback in kernel (konrad@oracle, ?@intel)
- qemu blkback
* Multi-page net protocol
owner: ?
expand the network ring protocol to allow multiple pages for
increased throughput
* Scalability: 16TiB of RAM
owner: jan@suse
* xl vm-{export,import}
owner: ?
Allow xl to import and export VMs to other formats; particularly
ovf, perhaps the XenServer format, or more.
* xl USB pass-through for PV guests
owner: ?
- Port the xend PV pass-through functionality to xl.
- Make sure qemu-based USB with qemu-upstream works
- Upstream the Linux frontend/backend drivers
* openvswitch toostack integration
owner: roger@citrix
status: Sample script posted by Bastian ("[RFC] openvswitch support script")
* Rationalized backend scripts (incl. driver domains)
owner: roger@citrix
* Linux console improvements
owner: jan@suse
-EHCI debug port (done, to be submitted)
-xHCI debug port
-Firewire
* CPUID-based idle (don't rely on ACPI info f/ dom0)
owner: jan@suse
(done, to be submitted)
* Remove hardcoded mobprobe's in xencommons
owner: ?
* Make storage migration possible
owner: ?
There needs to be a way, either via command-line or via some hooks,
that someone can build a "storage migration" feature on top of libxl
or xl.
* Full-VM snapshotting
owner: ?
Have a way of coordinating the taking and restoring of VM memory and
disk snapshots. This would involve some investigation into the best
way to accomplish this.
* VM Cloning
owner: ?
Again, a way of coordinating the memory and disk aspects. Research
into the best way to do this would probably go along with the
snapshotting feature.
* PV audio (audio for stubdom qemu)
owner: stefano.panella@citrix
* Memory: Replace PoD with paging mechanism
owner: george@citrix
* Managed domains?
[[Category:Xen 4.3]
