As planned I tagged the release in git earlier today and pushed signed
tarball and rpms to the usual place:
ftp://libvirt.org/libvirt/
I also pushed the python bindings at
ftp://libvirt.org/libvirt/python
This release seems to be very heavy on new features, but under the hood
there is as usuall a number of bug fixes and refactoring patches:
New features:
- qemu: Add Hyper-V PV IPI and Enlightened VMCS support
The QEMU driver now has support for Hyper-V PV IPI and Enlightened VMCS
for Windows and Hyper-V guests.
- qemu: Added support for PCI devices on S390
PCI addresses can now include the new zpci element which contains uid
(user-defined identifier) and fid (PCI function identifier) attributes
and makes the corresponding devices usable by S390 guests.
- Support changing IOThread polling parameters for a live guest
Introduced virDomainSetIOThreadParams which allows dynamically setting
the IOThread polling parameters used by QEMU to manage the thread
polling interval and the algorithm for growth or shrink of the polling
time. The values only affect a running guest with IOThreads. The
guest's IOThread polling values can be viewed via the domain
statistics.
- Xen: Add support for PVH
The libxl driver now supports Xen's PVH virtual machine type. PVH
machines are enabled with the new "xenpvh" OS type, e.g.
<os><type>xenpvh</type></os>
- qemu: Added support for CMT (Cache Monitoring Technology)
Introduced cache monitoring using the monitor element in cachetune for
vCPU threads. Added interfaces to get and display the cache utilization
statistics through the command 'virsh domstats' via the
virConnectGetAllDomainStats API.
- qemu: Add support for nested HV for pSeries guests
Nested HV support makes it possible to run nested (L2) guests with
minimal performance penalty when compared to regular (L1) guests on
ppc64 hardware.
Bug fixes:
- Xen: Handle soft reset shutdown event
The pvops Linux kernel uses soft reset to handle the crash machine
operation. The libxl driver now supports the soft reset shutdown event,
allowing proper crash handling of pvops-based HVM domains.
Thanks everybody for your contribution toward this release,
be it with ideas, bug reports, patches reviews, docs, localization...
Remember, next release should be around mid-January, 5.0.0,
in the meantime enjoy the release and end of years vacations you may have !
Daniel
--
Daniel Veillard | Red Hat Developers Tools http://developer.redhat.com/
veillard(a)redhat.com | libxml Gnome XML XSLT toolkit http://xmlsoft.org/http://veillard.com/ | virtualization library http://libvirt.org/
