[Libvirt-announce] Release of libvirt-3.5.0
by Daniel Veillard
As planned, it is out, I tagged it in git and pushed signed tarball and
rpms to the usual place:
ftp://libvirt.org/libvirt/
I also made a release 3.5.0 of the python bindings with minimal changes
compared to 3.4.0, it can be found at:
ftp://libvirt.org/libvirt/python/
This is a balanced release with signiciant amounts of both new features,
improvements and bug fixes:
New features:
- qemu: Add support for loadparm for a boot device
Add an optional boot parameter 'loadparm' for a boot device. Loadparm
is an 8 byte parameter that, when present, is queried by S390 guests
via sclp or diag 308. Linux guests on S390 use it to select a boot
entry.
- Support controlling how video devices are exposed to the bhyve guests
The vgaconf attribute was added to video's driver element. Possible
values are: on, off, and io. It controlls the way how bhyve exposes
video devices to its guests; various guest OSes might require different
settings to boot properly.
- qemu: Add support for live updates of coalesce settings
Users can now use virsh update-device to change the coalesce settings
of an interfaces while the domain is running.
- qemu: Allow VirtIO devices to use vIOMMU
It is now possible to turn on IOTBL for the vIOMMU and have VirtIO
devices use it, provided they have been configured appropriately.
Improvements:
- qemu: block copy job can be used with persistent domains
Until now it was not possible to use block copy with persistent VMs. In
use cases where it's not required to recover the job after VM shutdown,
it's possible to specify VIR_DOMAIN_BLOCK_COPY_TRANSIENT_JOB flag to
start the copy job.
- JSON pseudo-protocol backing store parser supports new format of qemu 2.9
QEMU 2.9 modified a few structures corresponding to the JSON format of
specifying a backing store for a disk image. Libvirt now implements the
new format.
- Capabilities now include info about host's CAT settings
Various information about resource control from the host is gathered
and presented in capabilities if available.
- apparmor: Several improvements
Allow access to Ceph config, EFI firmware on both x86_64 and aarch64,
device tree on ppc64 and more.
- qemu: Support host-model on POWER9 machines
Bug fixes:
- qemu: snapshot: retrieve image metadata from user provided files
Disk images of an external snapshot created with
VIR_DOMAIN_SNAPSHOT_CREATE_REUSE_EXT flag specified would not be
scanned for metadata after recent changes. The metadata is necessary to
allow keeping relative paths between images when doing a block-commit.
- Parse decimal numbers in a locale-independent way
Some locales, such as de_DE and pt_BR, use comma rather than dot to
separate the integer part from the fractional part of a decimal number;
however, several data sources such as the kernel use a
locale-independent representation and need to be treated accordingly.
- Support compilation with newer compiler and libc versions
Several fixes have been included to make compilation with Clang 4.0.0,
GCC 7.1 and glibc >= 2.25.90 possible.
- qemu: Query name for vhost-user interfaces at runtime
This makes it possible to use virsh subcommands such as domiflist and
domifstat on vhost-user interfaces.
- qemu: Set MTU for hotplugged interfaces correctly
When hotplugging a network interface, the MTU was only set on the guest
side. Set it on the host side as well.
- qemu: Forbid updating MTU for interfaces of running guests
The MTU setting can't be modified while the guest is running, so any
attempt to alter it at runtime will now result in an error rather than
being silently ignored.
- qemu: Fix specifying QXL heads with older QEMU releases
Specifying the number of QXL heads was not working correctly for QEMU
releases older than 1.6.
- qemu: Fix migration to older libvirt/QEMU versions
When the guest is started, libvirt updates the CPU definition to
reflect the actual CPU features to enforce ABI. We need to send
original and updated CPU definition in order to support migration to
older libvirt/QEMU versions. Only the updated CPU definition was sent
to destination.
So thanks everybody for your help toward this release, be it code,
bug reports, reviews ideas or doc, it's all appreciated !
So please enjoy this new release !
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/
6 years, 10 months