The 12.2.0 release of both libvirt and libvirt-python is tagged and
signed tarballs are available at
https://download.libvirt.org/
https://download.libvirt.org/python/
Thanks everybody who helped with this release by sending patches,
reviewing, testing, or providing feedback. Your work is greatly
appreciated.
* Removed features
* qemu: Stop advertising support for ``handle`` backend of 9p filesystems
QEMU removed the feature in the 4.0 release, but our capability XML
still reported it.
* New features
* qemu: Add support to configure IOMMUFD backend for whole VM
In addition to setting IOMMUFD backend for each device it is possible
to use the new ``<iommufd>`` element to enable IOMMUFD backend for all
host devices. Users can still change it per device.
* qemu: Add support to pass FD for IOMMUFD when starting VM
Management applications running unprivileged libvirt can open /dev/iommu
and pass FD to libvirt in order to change locked memory accounting.
This is done via new ``<iommufd>`` element.
* qemu: Add support for declaring that storage was zeroed for storage copy
APIs
The qemu driver now can skip zeroing of the storage during
``virDomainBlockCopy`` or migration with non-shared storage with the
appropriate flags. This can be used for storage technologies which lack
efficient zeroing support.
* hyperv: Add basic snapshot functionality
The hyperv driver now implements the following libvirt APIs:
``virDomainDefineXMLFlags()``, ``virDomainSnapshotLookupByName()``,
``virDomainListAllSnapshots()``, ``virDomainSnapshotNum()``,
``virDomainSnapshotGetXMLDesc()``, ``virDomainSnapshotCurrent()``,
``virDomainHasCurrentSnapshot()``, ``virDomainSnapshotGetParent()``.
* Improvements
* conf: support more than 255 vCPUs with amd-iommu
With 256 or more vCPUs libvirt previously required EIM enabled for all
models of IOMMU. This is not valid for AMD model and validation was changed
so that XTSup is required there. Additionally, it is automatically enabled
if needed.
* Introduce VIR_CONNECT_GET_DOMAIN_CAPABILITIES_EXPAND_CPU_FEATURES flag
This new flag for virConnectGetDomainCapabilities can be used to request
the host-model CPU definition to include all supported features (normally
only extra features relative to the selected CPU model are listed).
* qemu: Add statistics for ``<dataStore>`` storage
The bulk statistics (``virsh domstats --block --backing``) now report also
information about the ``<dataStore>`` if given disk uses this feature.
* hyperv: Hyper-V guests now report TPM device status in their domain xml
definition.
* Bug fixes
* qemu: Fix crash when attaching network inteface with hostdev network
Introduced in v12.1.0 by implementing IOMMUFD backend support for
host devices.
Enjoy.
Jirka
