Release of libvirt-11.6.0
The 11.6.0 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.
* New features
* Introduce VIR_CONNECT_BASELINE_CPU_IGNORE_HOST flag
This new flag for virConnectBaselineHypervisorCPU can be used for computing
a baseline CPU on any host. Without the VIR_CONNECT_BASELINE_CPU_IGNORE_HOST
flag the baseline API would return reasonable output only when run on one of
the hosts that the input CPU definitions were collected from.
* Allow control over QEMU TLS priority strings
The qemu.conf file now has multiple settings allowing control over the
QEMU TLS priority strings, for the different subsystems in QEMU that
can support TLS. This can be used to workaround a current bug in GNUTLS
that is liable to cause crashes of the source QEMU when performing long
running live migration operations with TLS enabled.
* Add support for disabling deprecated CPU model features by default for s390 domains
Starting an s390 domain with host-model will now default to setting the
``deprecated_features`` attribute to ``off``, ensuring the domain starts
with a migration-compatible CPU model to newer systems. This behavior can
be modified by setting the ``default_cpu_deprecated_features`` option in
the qemu.conf file.
* bhyve: Add TCP console support
TCP serial devices can now be configured with ``<serial type='tcp'>``::
<serial type='tcp'>
<source mode='bind' host='127.0.0.1'
service='12345'/>
<target type='serial' port='0'/>
</serial>
Additionally, number of supported consoles increased to 4.
* qemu: Add support for RBD namespaces
Allow specifying the 'namespace' within a RBD image pool.
* Improvements
* qemu: Change default SCSI controller model to ``virtio-scsi`` for ARM and RISC-V
The previous default of ``lsilogic`` is unsupported by modern operating
systems. ``virtio-scsi`` is a more suitable default for ARM and RISC-V
``virt`` machine types.
* Clarify documentation of virConnectBaselineHypervisorCPU
The documentation makes it clear virConnectBaselineHypervisorCPU is
supposed to be called on one of the hosts represented in the input CPU
definitions. Otherwise the API will give unexpected results.
* Allow specifying zero discard granularity for block devices
This can be used to tell some guest operating systems (notably Windows) to
not trim the disk.
* bhyve: Add timeout handling for bhyveload
It is now possible to run ``bhyveload`` with the ``timeout`` tool, which
can send ``SIGTERM`` and ``SIGKILL`` signals when timeout is reached.
Timeout values are set using the ``bhyveload_timeout`` and
``bhyveload_timeout_kill`` configuration options in ``bhyve.conf``.
* nss: Improve debugging
Debugging messages from NSS modules can be now enabled by setting the
``LIBVIRT_NSS_DEBUG`` environment variable. So far, there is no special
meaning to its value.
* rpc: Removed requirement for TLS certificates to support 'key encipherment'
With TLS 1.3, key encipherment is not required even for RSA keys. Other key
types didn't even support it so they were wrongly refused even in cases when
they would work with libvirt. The TLS certificate validation now no longer
requires 'key encipherment' to be enabled.
* Bug fixes
* bhyve: Fix resetting of the autostart flag of the domain on destroy.
* The nwfilter driver no longer recreates the base iptable/ip6tables chains
The nwfilter driver had a impl mistake causing it to recreate the
base chains for iptables/ip6tables every time a VM was started.
This allowed a small window where traffic might not be fully
filtered. It now handles iptables/ip6tables the same way as
ebtables, creating the base chains only if they did not already
exist.
* Fix systemd unit ordering for auto-shutdown of domains via the daemon
The ordering of systemd units created by libvirt for individual machines
needed to be adapted when the shutdown of VMs on host shutdown is done
via the virt daemon itself (rather than ``libvirt-guests.service``) to
ensure that the VMs are not terminated before the virt daemon can deal with
them.
Enjoy.
Jirka