================
libvirt releases
================
This is the list of official releases for libvirt, along with an overview of
the changes introduced by each of them.
For a more fine-grained view, use the `git log`_.
v7.9.0 (unreleased)
===================
* **Security**
* **Removed features**
* **New features**
* Introduce virtio-mem ```` is being truncated by QEMU before passed to the guest.
Since it's impossible to fix it without running into further regressions
the documentation was improved to document the intricacies.
* **Bug fixes**
* qemu: Fixed validation of disk ``iothread`` configuration
The validation of ``iothread`` config was previously moved to a place where
it caused bogus errors when address wasn't allocated when hotplugging a
disk. The check is now removed as it wasn't actually necessary at all.
v7.4.0 (2021-06-01)
===================
* **Removed features**
* qemu: Remove support for QEMU < 2.11
In accordance with our platform support policy, the oldest supported QEMU
version is now bumped from 1.5 to 2.11.
* **New features**
* qemu: Add support for hotplugging ````
Booting is possible from virtiofs filesystems. Introduce an option
to control the boot order, like we do for other bootable devices.
* hyperv: implement new APIs
The ``virDomainUndefine()``, ``virDomainUndefineFlags()``,
``virDomainDefineXML()``, ``virDomainAttachDevice()``, and
``virDomainAttachDeviceFlags()``, ``virConnectListAllNetworks()``,
``virConnectNumOfNetworks()``, ``virNetworkLookupByName()``,
``virNetworkLookupByUUID()``, ``virConnectNumOfDefinedNetworks()``,
``virConnectListDefinedNetworks()``, ``virNetworkGetAutostart()``,
``virNetworkIsActive()``, ``virNetworkIsPersistent()``,
``virNetworkGetXMLDesc()``, and ``virDomainScreenshot()``, APIs have been
implemented in the Hyper-V driver.
* Support element in plain devices
This is useful when libvirt doesn't have the privileges necessary
to set the hostdev device's MAC address (which is a necessary
part of the alternate ).
* Introduce ```` support
Introduces support for QEMU vhost-user-blk device that can be used
to access storage exported via the vhost-user protocol by daemons such
as the ``qemu-storage-daemon``.
* **Bug fixes**
* qemu: Fix disk quiescing rollback when creating external snapshots
If the qemu guest agent call to freeze filesystems failed when creating
an external snapshot with ``VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE`` flag the
filesystems would be unconditionally thawed. This could cause problems when
the filesystems were frozen by an explicit call to ``virDomainFSFreeze``
since the guest agent then rejects any further freeze attempts once are
filesystems frozen, an explicit freeze followed by a quiesced snapshot
would fail and thaw filesystems.
Users are also encouraged to use ``virDomainFSFreeze/Thaw`` manually instead
of relying on ``VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE`` if they need finer
grained control.
* cgroups: Fix how we setup and configure cgroups on hosts with systemd
When libvirt is running on host with systemd we register every VM with
machined which creates the VM root cgroup for us as well. Before this fix
we were directly modifying files in the VM root cgroup which was incorrect
because all the files are managed by systemd. The implication was that any
change done by libvirt to cgroup attributes supported by systemd could be
removed which happens for example by running ``systemctl daemon-reload``.
To fix the issue libvirt now uses DBus calls for some of the cgroup
attributes that distribute the resources proportionally to the cgroup
siblings and for the rest we have a new sub-cgroup that libvirt can
managed directly.
For more details why this is necessary see
`systemd cgroup `` on an empty cdrom
Specifying ```` for an empty cdrom would prevent the VM from
starting as qemu doesn't accept the tuning for an empty drive. We now
postpone setting the parameters until a new media is inserted.
* Avoid taking extra host memory when launching pSeries guests
Under certain conditions, pSeries guests were being launched with more
RAM than it was specified in the domain XML by the user. New pSeries
domains created with libvirt 7.0.0 will always launch with the right
amount of initial memory. Existing guests that migrate from an older
libvirt version to 7.0.0 will not be affected by this change.
* qemu: Don't cache NUMA caps
``virsh capabilities`` contains ````. The node device APIs also now
list and provide XML descriptions for vDPA devices.
* **Bug fixes**
* hyperv: ensure WQL queries work in all locales
Relying on the "Description" field caused queries to fail on non-"en-US"
systems. The queries have been updated to avoid using localized strings.
* rpc: Fix ``virt-ssh-helper`` detection
libvirt 6.8.0 failed to correctly detect the availability of the new
``virt-ssh-helper`` command on the remote host, and thus always used the
fallback instead; this has now been fixed.
v6.8.0 (2020-10-01)
===================
* **Security**
* qemu: double free in qemuAgentGetInterfaces() in qemu_agent.c
Clients connecting to the read-write socket with limited ACL permissions
may be able to crash the libvirt daemon, resulting in a denial of service,
or potentially escalate their privileges on the system. CVE-2020-25637.
* **New features**
* xen: Add ``writeFiltering`` attribute for PCI devices
By default Xen filters guest writes to the PCI configuration space of a
PCI hostdev, which may cause problems for some devices. The ``writeFiltering``
attribute of the device's ```` element can be used to disable the
filtering and allow all guest writes to the configuration space.
* bhyve: Support setting the framebuffer resolution
Libvirt can now set the framebuffer's "w" and "h" parameters
using the ``resolution`` element.
* bhyve: Support VNC password authentication
Libvirt can now probe whether the bhyve binary supports
VNC password authentication. In case it does, a VNC password
can now be passed using the ``passwd`` attribute on
the ```` element.
* remote: ``virt-ssh-helper`` replaces ``nc`` for SSH tunnelling
Libvirt now provides a ``virt-ssh-helper`` binary on the server
side. The libvirt remote client will use this binary for setting
up an SSH tunnelled connection to hosts. If not present, it will
transparently fallback to the traditional ``nc`` tunnel. The new
binary makes it possible for libvirt to transparently connect
across hosts even if libvirt is built with a different installation
prefix on the client vs server. It also enables remote access to
the unprivileged per-user libvirt daemons (e.g. using a URI such as
``qemu+ssh://hostname/session``). The only requirement is that
``virt-ssh-helper`` is present in ``$PATH`` of the remote host.
* esx: implement few APIs
The ``virConnectListAllNetworks()``, ``virDomainGetHostname()``, and
``virDomainInterfaceAddresses()`` (only for
``VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_AGENT`` source) APIs were implemented
in the esx driver.
* **Improvements**
* qemu: Allow migration over UNIX sockets
QEMU migration can now be performed completely over UNIX sockets. This is
useful for containerised scenarios and can be used in both peer2peer and
direct migrations.
* dbus: Use GLib implementation instead of libdbus
Adopting GLib DBus implementation simplifies our code as libdbus provides
low-level APIs where we had to have a lot of helper functions. With this
change we also remove dependency on libdbus and possibly fix all the DBus
related libvirtd crashes seen over the time.
* Re-introduce NVDIMM auto-alignment for pSeries Guests
The auto-alignment logic was removed in v6.7.0 in favor of requiring the
size provided by the user to be already aligned; however, this had the
unintended consequence of breaking some existing guests. v6.8.0 restores
the previous behavior with an improvement: it also reflects the auto-aligned
value in the domain XML.
* qemu: Preserve qcow2 cluster size after external snapshots
The new overlay image which is installed on top of the current chain when
taking an external snapshot now preserves the cluster size of the original
top image to preserve any performance tuning done on the original image.
* **Bug fixes**
* qemu: Various (i)SCSI backed hostdev fixes
(i)SCSI backed hostdevs now work again with an arbitrarily long
user-specified device alias and also honor the 'readonly' property after a
recent rewrite.
* **Removed features**
* node_device: Remove HAL node device backend
HAL is deprecated on all supported OS so there is no need to keep it
in libvirt. udev backend is used on Linux OSes and devd can be eventually
implemented as replacement for FreeBSD.
v6.7.0 (2020-09-01)
===================
* **Packaging changes**
* Libvirt switch to Meson build system
Libvirt abandoned autotools and switched to Meson build system.
* **New features**
* qemu: Add support for initiator IQN configuration for iSCSI hostdevs
Similarly to iSCSI ```` users can use an ```` element
inside ```` with the same format to configure the ``IQN`` value
used by the qemu initiator when connecting to an iSCSI target.
* xen: Add support for device model command-line passthrough
Xen supports passing arbitrary arguments to the QEMU device model using
the ``device_model_args`` setting in xl.cfg(5). The libvirt xen driver now
supports this using ```` element, and map it to the host sound device using
the ```` element.
* **Improvements**
* Allow sparse streams for block devices
Sparse streams (e.g. ``virsh vol-download --sparse`` or ``virsh vol-upload
--sparse``) now handle if one of the stream ends is a block device.
* Remove NVDIMM auto-alignment for pSeries Guests
This feature was introduced in libvirt v6.2.0 as part of the overall
NVDIMM support for pSeries guests. The idea was to relieve the user
from knowing ppc64 alignment details, but the end result is that we
ended up with inconsistencies between domain XML and actual NVDIMM
size the guest is using. To promote consistency between domain XML
and the guest, unaligned NVDIMM sizes for pSeries guests will now be
forbidden and no size auto-alignment will be made. Instead, libvirt will
suggest an aligned round up size for the user.
* apparmor: Several improvements
Add support for virtiofs filesystem and allow QEMU to load old
shared objects after upgrade.
* **Bug fixes**
* virdevmapper: Deal with kernels without DM support
In the previous release libvirt dropped libdevmapper in favor of its own
implementation. However, it failed to deal correctly with kernels that
either don't have device mapper enabled or where the dm-mod module is not
loaded yet. This is now fixed.
* resctrl: Use exclusive lock for /sys/fs/resctrl
When two or more domains were attempted to start at once, due to a bug in
implementation, resctrl was not locked properly and thus threads did not
mutually exclude with each other resulting in not setting requested
limitations.
* mdev: Fix daemon crash when reattaching mdevs on assignment conflict
If there's a list of mdevs to be assigned to a domain, but one of them (NOT
the first) is already assigned to a different domain then libvirtd would
crash. This is now fixed.
* Fix logic in setting COW flag on btrfs
When COW is not explicitly requested to be disabled or enabled, then
libvirt should do nothing on non-BTRFS file systems.
* Avoid crash due to race in glib event loop code
Libvirt switched to glib event loop in 6.1.0 but it was also tickling a bug
in glib code leading to the daemon crash. Libvirt way of calling glib was
changed so the daemon crashes no more.
* virdevmapper: Handle kernel without device-mapper support
In the previous release, Libvirt dropped libdevmapper in favor of its own
implementation. But the implementation did not handle kernels without
device-mapper support. This is now fixed.
* remove autogenerated macvtap names from migration XML
Autogenerated macvtap device names were being left in the
migration XML, which could result in libvirt erroneously deleting
the macvtap device of a different guest in the aftermath of
failing to restart the guest on the destination host. Removing the
autogenerated names avoids this.
v6.6.0 (2020-08-02)
===================
* **New features**
* Allow configuring of ACPI NUMA HMAT
Libvirt allows configuring ACPI Heterogeneous Memory Attribute Table to
hint software running inside the guest on optimization.
* esx: Add a ``type`` attribute for mac addresses.
This attribute allows (when set to ``static``) ignoring VMWare checks of the
MAC addresses that would generate a new one if they were in its OUI
(00:0c:29).
* conf: add control over COW for storage pool directories
The storage pool code now attempts to disable COW by default on btrfs, but
management applications may wish to override this behaviour. This is now
possible via new ``cow`` element.
* **Improvements**
* esx: Change the NIC limit for recent virtualHW versions
Specifying a virtualHW version greater or equal to 7 (ESXi 4.0) will allow
you to use up to 10 NICs instead of 4 as it was previously.
* qemu: Support encrypted TLS keys for NBD disks
The secret key used for disks can now be encrypted similarly to TLS keys
used for migration, chardev and others.
* qemu: ``VIR_DOMAIN_EVENT_ID_BLOCK_THRESHOLD`` can now be registered for ````
The event can now be used also for block copy destinations by using the
index of the ```` image.
* qemu: consider available CPUs in ``vcpupin/emulatorpin`` output
This patch changes the default bitmap of ``vcpupin`` and ``emulatorpin``,
in the case of domains with static vcpu placement, all available CPUs
instead of all possible CPUs are returned making these APIs consistent with
the behavior of ``vcpuinfo``.
* **Bug fixes**
* virdevmapper: Don't use libdevmapper to obtain dependencies
When building domain's private ``/dev`` in a namespace, libdevmapper was
consulted for getting full dependency tree of domain's disks. However, this
meant that libdevmapper opened ``/dev/mapper/control`` which wasn't closed
and was leaked to QEMU. CVE-2020-14339
* qemu: Report correct ``index`` in ``VIR_DOMAIN_EVENT_ID_BLOCK_THRESHOLD``
Starting from libvirt 5.10 with QEMU 4.2 the
``VIR_DOMAIN_EVENT_ID_BLOCK_THRESHOLD`` event would report incorrect device
``index`` when reported for an image from the backing chain of a disk.
* qemu: Don't fail active layer block commit or block copy in certain cases
Starting from libvirt-6.5 an active layer block commit or a block copy could
fail if the same destination was used more than once.
* qemu: Don't change ownership of restore file
When restoring a domain from a file, Libvirt no longer changes its ownership.
* qemu: Set SPAPR TPM default to 2.0 and prevent 1.2 choice
The firmware (SLOF) on QEMU for ppc64 does not support TPM 1.2, so prevent
the choice of TPM 1.2 when the SPAPR device model is chosen and use a
default of '2.0' (TPM 2) for the backend.
* qemu: Do not set ``//cpu/@migratable`` for running domains
Libvirt release of 6.4.0 started to fill the default value for
``//cpu/@migratable`` attribute according to QEMU support. However, active
domains either have the migratable attribute already set or they were
started with older Libvirt which doesn't support the attribute.
v6.5.0 (2020-07-03)
===================
* **New features**
* Allow firmware blobs configuration
QEMU offers a way to tweak how firmware configures itself
and/or provide new configuration blobs. New ``.d in
alphabetical order. Hook script in old place will be executed
as first for backward compatibility.
* qemu: Add support for migratable host-passthrough CPU
QEMU 2.12 made it possible for guests to use a migration-friendly
version of the host-passthrough CPU. This feature is now exposed by
libvirt.
* **Improvements**
* network: Support NAT with IPv6
It's now possible to use ``
QEMU 4.2.0 and later, combined with a sufficiently recent guest virtio-net
driver (e.g. the driver included in Linux kernel 4.18 and later), supports
setting up a simple network bond device comprised of one virtio emulated
NIC and one hostdev NIC (which must be an SRIOV VF). (in QEMU, this is
known as the "virtio failover" feature). The allure of this setup is that
the bond will always favor the hostdev device, providing better
performance, until the guest is migrated - at that time QEMU will
automatically unplug the hostdev NIC and the bond will send all traffic via
the virtio NIC until migration is completed, then QEMU on the destination
side will hotplug a new hostdev NIC and the bond will switch back to using
the hostdev for network traffic. The result is that guests desiring the
extra performance of a hostdev NIC are now migratable without network
downtime (performance is just degraded during migration) and without
requiring a complicated bonding configuration in the guest OS network
config and complicated unplug/replug logic in the management application on
the host - it can instead all be accomplished in libvirt with the interface
subelement "type" and "persistent" attributes.
* support BR_ISOLATED flag for guest interfaces attached to a Linux host
bridge
Since Linux kernel 4.18, the Linux host bridge has had a flag BR_ISOLATED
that can be applied to individual ports. When this flag is set for a port,
traffic is blocked between that port and any other port that also has the
BR_ISOLATED flag set. libvirt domain interface config now supports setting
this flag via the `` and allows specifying
the offset and size of the image format container inside the storage source
via the ```` subelement.
* qemu: Introduce the 'tpm-spapr' TPM model
This device, available starting from QEMU 5.0, is limited to pSeries
guests.
* qemu: support Panic Crashloaded event handling
The pvpanic device now supports a 'crashloaded' event, which is emitted
when a guest panic has occurred but has already been handled by the guest
itself.
* qemu: Implement virDomainGetHostnameFlags
The ``--source`` argument to ``virsh domhostname`` can be used to specify
what data source to use for the domain hostnames. Currently, in addition
to the 'agent', libvirt can also use 'lease' information from dnsmasq to
get the hostname.
* **Improvements**
* qemu: Image format probing is allowed in certain cases
To resolve regressions when users didn't specify the backing image format
in the overlay, libvirt now probes the format in certain secure scenarios
which fixes a few common existing cases. Additionally the knowledge base
was extended to provide more information on how to rectify the problem.
* qemu: Support "dies" in CPU topology
This CPU topology concept, new in QEMU 4.1.0, sits between the existing
"socket" and "core".
* libxl: Add support for Credit2 scheduler parameters
* lxc: Add support LXC 3 network configuration format
* **Bug fixes**
* conf: Do not generate machine names ending with a dash
Recent systemd versions do not allow them.
* **Packaging changes**
* use of gnulib has been completely eliminated
Historically libvirt has embedded gnulib to provide fixes for various
platform portability problems. This usage has now been eliminated and
alternative approaches for platform portability problems adopted where
required. This has been validated on the set of platforms covered by
automated CI build testing. Other modern Linux distros using glibc are
expected to work. Linux distros using non-glibc packages, and other
non-Linux platforms may encounter regressions when building this release.
Please report any build problems encountered back to the project
maintainers for evaluation.
v6.0.0 (2020-01-15)
===================
* **Packaging changes**
* support for python2 is removed
Libvirt is no longer able to be built using the Python 2 binary. Python 3
must be used instead.
* docs: the python docutils toolset is now required
The use of rst2html has been introduced for the website build process since
docs are now being written in the RST as an alternative to HTML.
* **New features**
* new PCI hostdev address type: unassigned
A new PCI hostdev address type 'unassigned' is introduced. An unassigned
PCI hostdev behaves like any regular PCI hostdev inside Libvirt, but it is
not usable by the guest. This gives the user a new option to manage the
binding of PCI devices via Libvirt, declaring PCI hostdevs in the domain
XML but allowing just a subset of them to be assigned to the guest.
* Provide init scripts for sub-deaemons
So far libvirt shipped systemd unit files for sub-daemons. With this
release, init scripts are available too. Package maintainers can choose
which one to install via ``--with-init-script`` configure option.
* qemu: Support cold-unplug of sound devices
* qemu: Implement VIR_MIGRATE_PARAM_TLS_DESTINATION
This flag, which can be enabled using ``virsh`` 's ``--tls-destination``
option, allows migration to succeed in situations where there is a mismatch
between the destination's hostname and the information stored in its TLS
certificate.
* qemu: Support reporting memory bandwidth usage stats
Implement Intel RDT-MBM in libvirt. The stats can be obtained via ``virsh
domstats --memory`` .
* qemu: Allow accessing NVMe disks directly
Before this release there were two ways to configure a NVMe disk for a
domain. The first was using `` .
* qemu: Support vhost-user-gpu
Support for running virtio GPUs in separate processes with vhost-user
backend. It requires QEMU newer than 4.1.
* Introduce virConnectSetIdentity API
When split daemons are in use, this API is used to forward uid, gid and
SELinux info from ``virproxyd`` to other driver daemons such as
``virtqemud`` .
* **Improvements**
* qemu: Support running SLIRP networking in a separate process
User can configure the slirp-helper path in ``qemu.conf`` . It will start a
slirp-helper process to provide SLIRP networking when the VM is started
with network interface "user". That will allow stricter security policies
for QEMU SLIRP network.
* **Removed features**
* Remove xenapi driver
The xenapi driver is removed since it has not received any significant
development since its initial contribution nine years ago and has no known
user base.
v5.7.0 (2019-09-03)
===================
* **New features**
* qemu: Support Direct Mode for Hyper-V Synthetic timers
The QEMU driver now supports Direct Mode for Hyper-V Synthetic timers for
Hyper-V guests.
* lib: Add virDomainGetGuestInfo()
This API is intended to aggregate several guest agent information queries
and is inspired by stats API ``virDomainListGetStats()`` . It is
anticipated that this information will be provided by a guest agent running
within the domain. It's exposed as ``virsh guestinfo`` .
* Experimental split of libvirtd into separate daemons
The big monolithic libvirtd daemon can now be replaced by smaller
per-driver daemons. The new split daemons are considered experimental at
this time and distributions are encouraged to continue using the
traditional libvirtd by default.
* qemu: Support kvm-hint-dedicated performance hint
With ``
libvirt would mistakenly interpret the ``nodeset`` attribute as a list of
CPUs instead of as a list of NUMA node, and the process affinity would be
set incorrectly as a result; this has now been fixed.
v5.4.0 (2019-06-03)
===================
* **Security**
* cpu: Introduce support for the md-clear CPUID bit
This bit is set when microcode provides the mechanism to invoke a flush of
various exploitable CPU buffers by invoking the x86 ``VERW`` instruction.
CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091.
* Restrict user access to virt-admin, virtlogd and virtlockd
The intended users for these facilities are the ``root`` user and the
``libvirtd`` service respectively, but these restrictions were not enforced
correctly. CVE-2019-10132.
* **Improvements**
* test driver: Expand API coverage
Several APIs that were missing from the test driver have now been
implemented.
* Avoid unnecessary static linking
Most binaries shipped as part of libvirt, for example ``virtlogd`` and
``libvirt_iohelper`` , were embedding parts of the library even though they
also linked against the ``libvirt.so`` dynamic library. This is no longer
the case, which results in both the disk and memory footprint being
reduced.
* qemu: Report stat-htlb-pgalloc and stat-htlb-pgfail balloon stats
These stats have been introduced in QEMU 3.0.
* **Bug fixes**
* qemu: Fix emulator scheduler support
Setting the scheduler for QEMU's main thread before QEMU had a chance to
start up other threads was misleading as it would affect other threads
(vCPU and I/O) as well. In some particular situations this could also lead
to an error when the thread for vCPU #0 was being moved to its cpu,cpuacct
cgroup. This was fixed so that the scheduler for the main thread is set
after QEMU starts.
* apparmor: Allow hotplug of vhost-scsi devices
v5.3.0 (2019-05-04)
===================
* **New features**
* qemu: Add support for setting the emulator scheduler parameters
I/O threads and vCPU threads already support setting schedulers, but until
now it was impossible to do so for the main QEMU thread (emulator thread in
the libvirt naming). This is, however, requested for some very specific
scenarios, for example when vCPU threads are running at such priority that
could starve the main thread.
* **Removed features**
* vbox: Drop support for VirtualBox 4.x releases
Support for all the 4.x releases was ended by VirtualBox maintainers in
December 2015. Therefore, libvirt support for these releases is dropped.
* **Improvements**
* qemu: Use PCI by default for RISC-V guests
PCI support for RISC-V guests was already available in libvirt 5.1.0, but
it required the user to opt-in by manually assigning PCI addresses: with
this release, RISC-V guests will use PCI automatically when running against
a recent enough (4.0.0+) QEMU release.
* qemu: Advertise firmware autoselection in domain capabilities
The firmware autoselection feature is now exposed in domain capabilities
and management applications can query for accepted values, i.e. values that
are accepted and for which libvirt found firmware descriptor files.
Firmware Secure Boot support is also advertised.
* Drop YAJL 1 support
YAJL 2 is widely adopted and maintaining side by side support for two
versions is unnecessary.
* **Bug fixes**
* rpc: cleanup in virNetTLSContextNew
Failed new gnutls context allocations in virNetTLSContextNew function
results in double free and segfault. Occasional memory leaks may also
occur.
* virsh: various completers fixes
There were some possible crashers, memory leaks, etc. which are now fixed.
* qemu: Make hugepages work with memfd backend
Due to a bug in command line generation libvirt did not honor hugepages
setting with memfd backend.
* Enforce ACL write permission for getting guest time & hostname
Getting the guest time and hostname both require use of guest agent
commands. These must not be allowed for read-only users, so the permissions
check must validate "write" permission not "read".
v5.2.0 (2019-04-03)
===================
* **New features**
* Add Storage Pool Capabilities output
Add support to list an enumerated list of supported Storage Pools via the
virConnectGetCapabilities API when connected via a Storage Driver. Add
support to get a more detailed list XML output Storage Pool Capabilities
vis the virConnectGetStoragePoolCapabilites API.
* qemu: Support virtio-{non-}transitional device models
``virtio-transitional`` and ``virtio-non-transitional`` ``model`` values
were added to the QEMU driver for the following devices: ``disk`` ,
``interface`` , ``filesystem`` , ``rng`` , ``vsock`` , ``memballoon`` ,
``controller`` type ``scsi`` , ``controller`` type ``virtio-serial`` ,
``input`` bus ``virtio`` type ``passthrough`` , ``hostdev`` type
``scsi_host`` . These new models can be used to give fine grained control
over what virtio device version is presented to the guest.
* qemu: Enable firmware autoselection
Libvirt allows users to provide loader path for some time now. However,
this puts some burden on users because they need to know what firmware
meets their requirements. Now that QEMU ships firmware description files
this burden can be moved onto libvirt. It is as easy as setting the
``firmware`` attribute in the ``os`` element (accepted values are ``bios``
and ``efi`` ). Moreover, libvirt automatically enables domain features
needed for firmware it chooses.
* snapshots: Add support for topological listings
A new flag VIR_DOMAIN_SNAPSHOT_LIST_TOPOLOGICAL is available for the
various snapshot listing APIs such as virDomainListAllSnapshots(). For
drivers that support the flag, the listed snapshots are guaranteed to be
sorted such that parents occur before children.
* Xen: Add support for max grant frames setting
Add support for Xen's max_grant_frames setting by adding a new xenbus
controller type with a maxGrantFrames attribute. E.g. ```` element in domain
configuration.
* network: Support setting a firewalld "zone" for virtual network bridges
All libvirt virtual networks with bridges managed by libvirt (i.e. those
with forward mode of "nat", "route", "open", or no forward mode) will now
be placed in a special firewalld zone called "libvirt" by default. The zone
of any network bridge can be changed using the ``zone`` attribute of the
network's ``bridge`` element.
* bhyve: Support for ignoring unknown MSRs reads and writes
A new element xenpvh ., use sata address as
...
v4.5.0 (2018-07-02)
===================
* **New features**
* qemu: Provide TPM emulator support
Support QEMU's TPM emulator based on swtpm. Each QEMU guest gets its own
virtual TPM.
* bhyve: Support specifying guest CPU topology
Bhyve's guest CPU topology could be specified using the ```` in
```` . The driver now honors ```` , and defers setting a
default value to Xen. Note that the Xen default is 256, so any domains
started after this improvement will have one fourth the shares of
previously started domains. If all domains must have equal CPU shares,
administrators must manually set the weight of previously started domains
to 256, or restart them.
* **Bug fixes**
* qemu: TLS migration now enforces use of TLS for the NBD connection
When the VIR_MIGRATE_TLS flag was used with the migration API libvirt did
not ensure that the NBD connection was using TLS as well. The code now
rejects such migration as the TLS transport for NBD is not ready yet, but
prevents a false sense of security that TLS would be used. The support TLS
for NBD will be added soon.
v4.1.0 (2018-03-05)
===================
* **New features**
* Added support for CAT (Cache allocation Technology)
Domain vCPU threads can now have allocated some parts of host cache using
the ``cachetune`` element in ``cputune`` .
* Allow opening secondary drivers
Up until now it was possible to connect to only hypervisor drivers (e.g.
qemu:///system, lxc:///, vbox:///system, and so on). The internal drivers
(like network driver, node device driver, etc.) were hidden from users and
users could use them only indirectly. Starting with this release new
connection URIs are accepted. For instance network:///system,
storage:///system and so on.
* virtlogd, virtlockd: Add support for admin protocol
These two daemons now support admin protocol through which some admin info
can be gathered or some configuration tweaked on the fly.
* **Improvements**
* virsh: Enhance bash completion
Implement more bash completions so that basic libvirt objects can be
auto-completed (e.g. networks, interfaces, NWFilters, and so on).
* qemu: Use VIR_ERR_DEVICE_MISSING for various hotplug/detach messages
* qemu: Allow showing the dump progress for memory only dump
Alter the QEMU dump-guest-memory command processing to check for and allow
asynchronous completion which then allows for the virsh dump --memory-only
--verbose command to display percent completion data.
* conf: add support for setting Chassis SMBIOS data fields
* libxl: add support for setting clock offset and adjustment
* Make port allocator global
Up until now each driver had their own port allocator module. This meant
that info on port usage was not shared. Starting with this release, the
port allocator module is made global and therefore drivers allocate ports
from global pool.
* Fixed some compiler warnings that appear with GCC 8
* **Bug fixes**
* qemu: Check for unsafe migration more thoroughly
If a domain disk is stored on local filesystem (e.g. ext4) but is not being
migrated it is very likely that domain is not able to run on destination.
Regardless of share/cache mode.
* qemu: Fix updating device with boot order
Starting with 3.7.0 release updating any device with boot order would fail
with 'boot order X is already used by another device' while in fact it was
the very same device.
* virlog: determine the hostname on startup CVE-2018-6764
At later point it might not be possible or even safe to use getaddrinfo().
It can in turn result in a load of NSS module which can even be loaded from
unsage guest filesystem and thus escape the confinment of its container.
* qemu: Rework vCPU statistics fetching
Fetching vCPU statistics was very expensive because it lead to waking up
vCPU threads in QEMU and thus it degraded performance. The code was
reworked so that fetching statistics does not wake up halted vCPUs.
* qemu: unlink memory backing file on domain shutdown
Depending on the filesystem where domain memory is stored, some files might
have been left behind. This is not a problem on hugetlbfs, but it is a
problem on regular filesystems like ext4.
* qemu: Fix shutting down domains in parallel
If multiple domains were being shut down in parallel, libvirtd might have
deadlocked.
* nodedev: Update PCI mdev capabilities dynamically
PCI devices may have other nested capabilities, like SRIOV and mdev which
depend on the device being plugged into the native vendor driver. However,
in case such a device is directly assigned to a guest using VFIO driver,
the device will naturally lose these capabilities and libvirt needs to
reflect that.
v4.0.0 (2018-01-19)
===================
* **New features**
* tools: Provide bash completion support
Both ``virsh`` and ``virt-admin`` now implement basic bash completion
support.
* qemu: Refresh capabilities on host microcode update
A microcode update can cause the CPUID bits to change; therefore, the
capabilities cache should be rebuilt when such an update is detected on the
host.
* lxc: Set hostname based on container name
* **Improvements**
* CPU frequency reporting improvements
The CPU frequency will now be reported by ``virsh nodeinfo`` and other
tools for s390 hosts; at the same time; CPU frequency has been disabled on
aarch64 hosts because there's no way to detect it reliably.
* libxl: Mark domain0 as persistent
* Xen: Add support for multiple IP addresses on interface devices
* qemu: Add support for hot unplugging redirdev device
* **Bug fixes**
* qemu: Enforce vCPU hotplug granularity constraints
QEMU 2.7 and newer don't allow guests to start unless the initial vCPUs
count is a multiple of the vCPU hotplug granularity, so validate it and
report an error if needed.
v3.10.0 (2017-12-04)
====================
* **New features**
* conf: Support defining distances between virtual NUMA cells
A NUMA hardware architecture supports the notion of distances between NUMA
cells. This can now be specified using the ```` element within
the NUMA cell configuration. Drivers which support this include Xen and
QEMU.
* Xen: Support defining vNUMA topology
Xen now supports defining a virtual NUMA topology for VMs, including
specifying distances between NUMA cells.
* qemu: Add the ability to configure HPT resizing for pSeries guests
The user can now decide whether HPT (Hash Page Table) resizing should be
enabled, disabled or required instead of leaving it up to hypervisor
defaults and negotiation between the guest and the host.
* qemu: Add vmcoreinfo feature
Starting with QEMU 2.11, the guest can save kernel debug details when this
feature is enabled and the kernel supports it. It is useful to process
kernel dump with KASLR enabled, and also provides various kernel details to
crash tools.
* conf: Move the auth and encryption definitions to disk source
Allow parsing and formatting of the ``auth`` and ``encryption``
sub-elements to be a child of the ``source`` element. This will allow
adding an ``auth`` sub-element to a ``backingStore`` or ``mirror`` elements
as a means to track specific authentication and/or encryption needs.
* **Improvements**
* vbox: Add VirtualBox 5.2 support
* vbox: Add support for configuring storage controllers
The VirtualBox driver now supports the ```` element in the
domain XML for configuring storage controllers in VBOX VMs. Additionally,
libvirt's domain XML schema was updated to allow optional ``model``
attribute for ```` which is used by the VBOX driver
to set the IDE controller model to be one of 'piix4', 'piix4' (default), or
'ich6'. Finally, with this change ``dumpxml`` generates ````
elements that correspond to current VBOX VM storage controller
configuration.
* vbox: Add support for attaching empty removable disks
The VirutalBox driver now supports adding CD-ROM and floppy disk devices
that do not have the disk source specified. Previously such devices were
silently ignored.
* vbox: Add support for attaching SAS storage controllers
In VirtualBox, SCSI and SAS are distinct controller types whereas libvirt
does not make such distinction. Therefore, the VBOX driver was updated to
allow attaching SAS controllers via ```` element. If there are both SCSI and SAS controllers
present in the VBOX VM, the domain XML can associate the disk device using
the ```` element with the ``controller`` attribute, and
optionally, set the port via ``unit`` attribute.
* qemu: Generate predictable paths for qemu memory backends
In some cases management applications need to know paths passed to
memory-backend-file objects upfront. Libvirt now generates predictable
paths so applications can prepare the files if they need to do so.
* Shareable disks work properly with recent qemu
Recent qemu versions added image locking to avoid potential corruption of
disk images. This broke shareable disks with libvirt since the feature was
turned on by default in qemu. Libvirt now enables sharing of those disks in
qemu so that the image locking is not applied in that case. Additionally
libvirt now checks that shareable disks have supported format (raw) to
avoid metadata corruption.
* Improve serial console behavior on non-x86 architectures
ppc64, aarch64 and s390x guests were treating the and
elements differently from x86, in some cases presenting misleading
information to the user. The behavior is now consistent across all
architectures and the information reported is always accurate.
* **Bug fixes**
* vbox: Do not ignore failures to attach disk devices when defining
The ``define`` now fails and reports an error if any of the ``controller``
or ``disk`` devices specified in the domain XML fail to attach to the
VirtualBox VM.
* vbox: Fix dumpxml to always output disk devices
The VirtualBox driver was ignoring any disk devices in ``dumpxml`` output
if there was a SAS storage controller attached to the VM.
* vbox: Fix dumpxml to always generate valid domain XML
When a VirtualBox VM has multiple disks attached, each to a different
storage controller that uses 'sd' prefix for block device names e.g. one
disk attached to SATA and one to SCSI controller, it no longer generates
XML where both would have 'sda' device name assigned. Instead it properly
assigns 'sda' and 'sdb' to those disks in the order of appearance.
* Securely pass iSCSI authentication data
Rather than supplying the authentication data as part of the iSCSI URL for
a disk or host device, utilize the encrypted secret object to securely pass
the authentication data.
v3.9.0 (2017-11-02)
===================
* **New features**
* Add capability to allow hot (un)plug of a domain watchdog device
* Allow users to set device aliases
Users can set aliases to domain devices and thus identify them easily.
* qemu: Support multiqueue for virtio-blk
Multiqueue support for ``virtio-blk`` has been available in QEMU ever since
2.7.0, and now libvirt guests can enable it.
* Add virDomainSetLifecycleAction API
Provided a new API to allow dynamic guest lifecycle control for guest
reactions to poweroff, restart, or crash type events related to the domain
XML ``on_poweroff`` , ``on_reboot`` , and ``on_crash`` elements. The
``virsh set-lifecycle-action`` command was created to control the actions.
* qemu: Allow cold(un)plugging and hot(un)plugging input devices
* net: Implement QoS for vhostuser
* **Improvements**
* Allow a logical volume to be create using LUKS
A logical volume may be created using an ``encryption`` element using
"luks" format. This does require a previously created ``secret`` to store
the passphrase used to encrypt the volume Adding the volume to a domain can
then either provide the secret or allow the consumer in the guest to
provide the passphrase in order to decrypt the volume.
* net: Ignore auto-generated MAC address when detaching an interface
If the MAC address has not been specified by the user, libvirt will try and
fill in the gaps by generating one; however, for some error paths that led
to some confusing error messages, so when an auto-generated MAC address is
specified the error message will not include the auto-generated MAC.
* net: Enable MAC address lookup for virDomainInterfaceStats
* apparmor: Several improvements
Changes include permitting access to data about USB devices and ``dnsmasq``
instances, allowing spaces in guest names and many more.
* cpu: Use CPU information obtained from QEMU when possible
Recent QEMU versions can expose information about which CPU models are
available and usable on the host; libvirt will now make use of such
information whenever possible.
* hyperv: Various improvements
The error reported when clients can't connect to Hyper-V has been made more
descriptive, and memory limits for guests are now mapped to more
appropriate libvirt equivalents.
* qemu: Report QEMU error on failed migration
Instead of reporting a generic error, ask QEMU for a more detailed and thus
hopefully more helpful one.
* vbox: Implement autoport for RDP
libvirt will now obtain the (dynamically allocated) RDP port number from
VirtualBox itself, avoiding conflicts between multiple guests wanting to
use RDP at the same time.
* qemu: Allow rotation of small logs
On a host where numerous unique instances are executed per day, it's quite
possible that, even though each of the single log files are fairly small,
collectively the quantity and volume may add tens of thousands of log files
to the ``/var/log/libvirt/qemu/`` directory. Removing the constraints that
log have to be bigger than 100 KiB before they can be rotated solves the
issue.
* **Bug fixes**
* Fix swapped interface statistics and QoS
Due to internal implementation, reported statistics for some types of
interfaces were swapped (RX appeared in TX and vice versa). Similarly, QoS
was set in reversed way.
* Properly resize local LUKS encrypted volume
Resizing of a local LUKS encrypted volume will now use qemu-img to resize
the volume. This will require configuring a secret for the LUKS encrypted
volume.
* qemu: Reserve PCI addresses for implicit i440fx devices
Failing to do so causes the addresses to be considered usable by libvirt,
which means they could be assigned to more than one device resulting in the
guest failing to start.
* spec: Restart libvirtd only at the end of the upgrade process
Use ``%posttrans`` to make sure ``libvirtd`` is not restarted before all
other components, such as the library itself and storage / hypervisor
drivers, have already been upgraded.
* **Security**
* qemu: Ensure TLS clients always verify the server certificate
While it's reasonable to turn off client certificate validation, as setting
it up can be non-trivial, clients should always verify the server
certificate to avoid MITM attacks. However, libvirt was using the same knob
to control both checks, leading to CVE-2017-1000256 / LSN-2017-0002.
v3.8.0 (2017-10-04)
===================
* **New features**
* qemu: Added support for cold-(un)plug of watchdog devices
* qemu: Added support for setting IP address os usernet interfaces
* qemu: Added support for Veritas Hyperscale (VxHS) block devices
* storage: Added new events for pool-build and pool-delete
* **Improvements**
* qemu: Set DAC permissions properly for spice rendernode
When a ``rendernode`` path is set for SPICE GL on ``qemu:///system`` , we
now correctly set DAC permissions on the device at VM startup. This is the
last remaining hurdle to let SPICE GL work for ``qemu:///system`` without
any external host changes.
* nodedev: Add switchdev offload query to NIC capabilities
Allow querying the NIC interface capabilities for the availability of
switchdev offloading (also known as kernel-forward-plane-offload).
* New CPU models for AMD and Intel
AMD EPYC and Intel Skylake-Server CPU models were added together with their
features
* Improve long waiting when saving a domain
While waiting for a write to disk to be finished, e.g. during save, even
simple operations like ``virsh list`` would be blocking due to domain lock.
This is now resolved by unlocking the domain in places where it is not
needed.
* **Bug fixes**
* Proper units are now used in virsh manpage for dom(mem)stats
Previously the documentation used multiples of 1000, but now it is fixed to
use multiples of 1024.
* qemu: Fix error reporting when disk attachment fails
There was a possibility for the actual error to be overridden or cleared
during the rollback.
* qemu: Fix assignment of graphics ports after daemon restart
This could be seen with newer kernels that have bug regarding SO_REUSEADDR.
After libvirtd was restarted it could assign already used address to new
guests which would make them fail to start. This is fixed by marking used
ports unavailable when reconnecting to running QEMU domains.
* Fix message decoding which was causing a very strange bug
When parsing an RPC message with file descriptors was interrupted and had
to restart, the offset of the payload was calculated badly causing strange
issues like not being able to find a domain that was not requested.
v3.7.0 (2017-09-04)
===================
* **New features**
* qemu: Add managedsave-edit commands
Using managedsave-dumpxml, managedsave-define and managedsave-edit
commands, now we can dump and edit the XML configuration of domain which
has managedsave image.
* qemu: Add migrate-getmaxdowntime command
Currently, the maximum tolerable downtime for a domain being migrated is
write-only from libvirt, via migrate-setmaxdowntime. This implements a
complementary migrate-getmaxdowntime command
* bhyve: Support autoport for VNC ports
It's no longer necessary to explicitly specify VNC port for the bhyve
guests. With the autoport feature it will be allocated automatically.
Please refer to the bhyve driver documentation for examples.
* qemu: Added support for setting heads of virtio GPU
* qemu: Added support to configure reconnect timeout for chardev devices
When you have a TCP or UNIX chardev device and it's connected somewhere you
can configure reconnect timeout if the connection is closed.
* **Improvements**
* qemu: Report a clear error when dropping a VM during startup
"Failed to load config for domain 'DOMNAME'" is now reported if a VM config
can't be parsed for some reason, and thus provides a clear indication for
users (and devs).
* apparmor: Update for QEMU 2.10 compatibility
Starting with QEMU 2.10, disk images and NVRAM files get automatically
locked to prevent them from being corrupted; however, file locking needs to
be explicitly allowed through ``virt-aa-helper`` or AppArmor will reject
the requests and the guest will not be able to run.
* virsh: List Unix sockets in 'domdisplay' output
VNC and SPICE graphics can use Unix sockets instead of TCP/IP sockets as
connection endpoints, but such a configuration was not handled correctly by
``virsh domdisplay`` , causing the respective endpoints to be missing from
the output.
* qemu: Don't check whether offline migration is safe
Since offline migration only copies the guest definition to the destination
host, data corruption is not a concern and the operation can always be
performed safely.
* virt-host-validate: Fix IOMMU detection on ppc64
* **Bug fixes**
* qemu: Better support for international domain names (with wide characters)
There were some issues with multi-byte domains getting lost on daemon
restart due to truncation, so the code now handles multi-byte names a bit
better.
* qemu: Support long domain names with namespaces
Domains with extremely long names would fail to start due to temporary
namespace paths being created with the whole name. The path is now
generated with shortened name instead.
* qemu: Tolerate missing emulator binary during libvirtd restart
For some time libvirt required qemu capabilities being present when parsing
VM configs during startup. As a side effect VM configs would fail to parse
and thus vanish, if the emulator binary would be uninstalled or broken.
Libvirt now tolerates when capabilities are missing during startup.
* qemu: Prevent pSeries guests from disappearing in some situations
pSeries guest would disappear if any of the host devices they were
configured to use was not available during libvirtd startup, which could
easily happen for SR-IOV Virtual Functions. This scenario is now handled
correctly.
* qemu: Honor spice element.
* nodedev: add drm capability
Add a new 'drm' capability for Direct Rendering Manager (DRM) devices,
providing device type information.
* Add API for individual/specific vCPU hotplug
The new API allows selecting specific vCPUs to be added/removed from the
VM. The existing APIs allowed only adding/removing from the end which did
not play well with NUMA.
* **Improvements**
* virsh: pool-list: allow both --uuid and --name in one command
Adjust the virsh-pool command to support the --uuid and/or --name options
in order to print just the --name and/or --uuid of pools.
* Introduce MTU to domain
Allow setting MTU size for some types of domain interface and network.
* libxl: improve support for configurations
Add support for multiple timers. Extend the tsc timer to support the
emulate mode. Improve conversion of timer XML to/from xl.cfg.
* storage: modularize the storage driver
Split up the storage driver backends into loadable modules so that binary
distributions don't have to compromise on shipping the storage driver with
all backends which may pull in too many dependencies.
* **Bug fixes**
* nodedev: Fabric name must not be required for fc_host capability
fabric_name is one of many fc_host attributes in Linux that is optional and
left to the low-level driver to decide if it is implemented. For example
the zfcp device driver does not provide a fabric name for an fcp host. The
requirement for the existence of a fabric name has been removed by making
it optional.
* bhyve: change address allocation schema for SATA disks
Previously, the bhyve driver assigned PCI addresses to SATA disks directly
rather than assigning that to a controller and using SATA addresses for
disks. It was implemented this way because bhyve has no notion of an
explicit SATA controller. However, as this doesn't match libvirt's
understanding of disk addresses, the bhyve driver was changed to follow the
common schema and have PCI addresses for SATA controllers and SATA
addresses for disks. If you're having issues because of this, it's
recommended to edit the domain's XML and remove from
the elements with not specified
* libxl: fix dom0 autoballooning with Xen 4.8
* qemu: Allow empty script path to
subelement "group_name" to allow sharing I/O throttling quota
between multiple drives.
* nss: Introduce libvirt_guest
New ``libvirt_guest`` nss module that translates libvirt guest names into
IP addresses.
* daemon: Add support for runtime logging settings adjustment
Logging-related settings like log outputs and filters can now be adjusted
during runtime using the admin interface without the necessity of the
daemon's restart.
* storage: Add virStorageVolInfoFlags API
Add the API to support using the VIR_STORAGE_VOL_GET_PHYSICAL flag in order
to return the host physical size in bytes of the image container in the
allocation field of the _virStorageVolInfo structure. The --physical flag
has been added to the virsh vol-info command to access the data.
* libxl: Implement virDomainGetMaxVcpus API
* storage: Add overwrite flag checking for logical pool
Add support for the OVERWRITE flags for the logical storage backend
including checking for existing data on the target volumes when building a
new logical pool on target volume(s).
* qemu: Add support for guest CPU configuration on s390(x)
* **Improvements**
* perf: Add more perf statistics
Add support to get the count of branch instructions executed, branch
misses, bus cycles, stalled frontend cpu cycles, stalled backend cpu
cycles, and ref cpu cycles by applications running on the platform.
* conf: Display for volume xml
Add a display of the size of a disk volume in the output of the
volume XML.
* qemu: Use virtio-pci by default for aarch64 mach-virt guests
virtio-pci provides several advantages over virtio-mmio, such as the
ability to hotplug devices and improved performance. While opting in to
virtio-pci has been possible for a while, newly-defined guests will now use
it automatically.
* vbox: remove support for VirtualBox 3.x and older
Those old VirtualBox versions have been unsupported by upstream for a long
time and the API of 4.0 and newer has diverged enough to require code
abstractions to handle differences. Removing support for those old versions
drops lots of code from the driver and simplifies the logic to ease
implementation of new features going forward.
* virsh: pool-info: introduce option --bytes
Add option --bytes to virsh pool-info in order ti allow display of units in
bytes rather than default of human readable output.
* scsi: Add parent wwnn/wwpn or fabric capability for createVport
Improve the algorithm searching for the parent scsi_host device for
vHBA/NPIV scsi_host creation. Rather than supplying the "parent" by name,
it's now possible to define the parent by it's wwnn/wwpn or fabric_wwn in
the node device create XML or the storage pool XML.
* qemu: aggregate pcie-root-ports onto multiple functions of a slot
When pcie-root-ports are added to pcie-root in order to provide a place to
connect PCI Express endpoint devices, libvirt now aggregates multiple root
ports together onto the same slot (up to 8 per slot) in order to conserve
slots. Using this method, it's possible to connect more than 200 endpoint
devices to a guest that uses PCIe without requiring setup of any PCIe
switches.
* **Bug fixes**
* lxc: fix accidental killing of containers during libvirtd restart
The libvirt_lxc process was previously not moved into the container scope.
As a result, if systemd reloads its config after a container is started,
when libvirtd is later restarted it will accidentally kill the containers.
* qemu: Correct GetBlockInfo values
For an active domain, correct the physical value provided for a raw sparse
file backed storage and the allocation value provided for a qcow2 file
backed storage that hasn't yet been opened on the domain.
* qemu: Make virtio console usable on ppc64 guests
The chardev detection code has been improved and can now handle this
configuration properly.
* qemu: Enable mount namespace
To avoid funny races with udev relabelling devices under our hands and to
enhance security, libvirt now spawns each qemu process with its own
``/dev`` .
* storage: Fix implementation of no-overwrite for file system backend
Fix file system storage backend implementation of the OVERWRITE flags to be
consistent between code and documentation. Add checks to ensure that when
building a new file system on a target volume that there is not something
already on the disk in a format that libvirt can recognize.
* qemu: Create hugepage path on per domain basis
Historically, all hugepage enabled domains shared the same path under
hugetlbfs. This left libvirt unable to correctly set security labels on it.
With this release, however, each domain is put into a separate path which
is also correctly labeled.
* conf: Reject domains with duplicate drive addresses
Reject duplicate drive addresses for disks and hostdevs at domain
definition.
* libxl: reverse defaults on HVM net device attach
Fixes network interface attach for HVM domains when no model is specified.
Emulated hotplug isn't yet supported and hence we should default to the
general working scenario.
* libxl: always enable pae for x86_64 HVM
By default pae is disabled in libxl. Without an explicit configuration, an x86_64 HVM domain would be get an
i686 environment. pae should always be enabled for x86_64 HVM domains.
* qemu: Fix XML dump of autogenerated websocket
As a result autogenerated websocket port is regenerated on domain restore,
migration and such as it should be.
v2.5.0 (2016-12-04)
===================
* **New features**
* shmem: Add support for additional models
The shmem device can now utilize QEMU's ivshmem-plain and ivshmem-doorbell,
more modern versions of ivshmem.
* vbox: Add VirtualBox 5.1 support
* libssh: New transport
The new libssh transport allows one to connect to a running libvirtd via
SSH, using the libssh library; for example: ``qemu+libssh://server/system``
.
* vhost-scsi: Add support scsi_host hostdev passthrough
Add the capability to pass through a scsi_host HBA and the associated LUNs
to the guest.
* Allow debugging of gluster volumes in qemu
Users can now enable debug logging for native gluster volumes in qemu using
the "gluster_debug_level" option in qemu.conf
* Pre-allocate memory slots for memory hotplug
Slot numbers for memory devices are now automatically allocated and thus
persistent. In addition slot numbers can be specified without providing a
base address, which simplifies user configuration
* qemu: Express devices will be placed on PCIe bus by default
For machine types that use a PCI Express root bus (e.g. x86_64/Q35 and
aarch64/virt), any unaddressed PCI device that is an Express device (all
virtio-1.0 devices, e1000e, nec-xhci, vfio assigned devices) will be placed
on an Express controller (i.e. a pcie-root-port) instead of a legacy PCI
controller (i.e. pci-bridge) with the root ports added as needed.
* **Improvements**
* docs: Better documentation for migration APIs and flags
* vbox: Address thread safety issues
* virsh: Add support for passing an alternative persistent XML to migrate
command
* vhostuser: Allow hotplug of multiqueue devices
* NEWS: Switch to an improved format
List user-visible changes instead of single commits for a better high-level
overview of differences between libvirt releases.
* website: Modernize layout and branding
The libvirt website looked very cluttered and outdated; it has now been
completely overhauled, resulting in a design that's better organized and
more pleasant to look at.
* **Bug fixes**
* vz: Fix migration in P2P mode
* Forbid newline character in names of some libvirt objects
* Fix compilation on macOS
v2.4.0 (2016-11-01)
===================
No release notes.
v2.3.0 (2016-10-04)
===================
No release notes.
v2.2.0 (2016-09-02)
===================
No release notes.
v2.1.0 (2016-08-02)
===================
No release notes.
v2.0.0 (2016-07-01)
===================
No release notes.
v1.3.5 (2016-06-04)
===================
No release notes.
v1.3.4 (2016-05-01)
===================
No release notes.
v1.3.3 (2016-04-06)
===================
No release notes.
v1.3.2 (2016-03-01)
===================
No release notes.
v1.3.1 (2016-01-17)
===================
No release notes.
v1.3.0 (2015-12-09)
===================
No release notes.
v1.2.21 (2015-11-04)
====================
No release notes.
v1.2.20 (2015-10-02)
====================
No release notes.
v1.2.19 (2015-09-02)
====================
No release notes.
v1.2.18 (2015-08-03)
====================
No release notes.
v1.2.17 (2015-07-02)
====================
No release notes.
v1.2.16 (2015-06-01)
====================
No release notes.
v1.2.15 (2015-05-04)
====================
No release notes.
v1.2.14 (2015-04-02)
====================
No release notes.
v1.2.13 (2015-03-02)
====================
No release notes.
v1.2.12 (2015-01-27)
====================
No release notes.
v1.2.11 (2014-12-13)
====================
No release notes.
v1.2.10 (2014-11-03)
====================
No release notes.
v1.2.9 (2014-10-01)
===================
No release notes.
v1.2.8 (2014-09-02)
===================
No release notes.
v1.2.7 (2014-08-02)
===================
No release notes.
v1.2.6 (2014-07-02)
===================
No release notes.
v1.2.5 (2014-06-02)
===================
No release notes.
v1.2.4 (2014-05-04)
===================
No release notes.
v1.2.3 (2014-04-01)
===================
No release notes.
v1.2.2 (2014-03-02)
===================
No release notes.
v1.2.1 (2014-01-16)
===================
No release notes.
v1.2.0 (2013-12-02)
===================
No release notes.
v1.1.4 (2013-11-04)
===================
No release notes.
v1.1.3 (2013-10-01)
===================
No release notes.
v1.1.2 (2013-09-02)
===================
No release notes.
v1.1.1 (2013-07-30)
===================
No release notes.
v1.1.0 (2013-07-01)
===================
No release notes.
v1.0.6 (2013-06-03)
===================
No release notes.
v1.0.5 (2013-05-02)
===================
No release notes.
v1.0.4 (2013-04-01)
===================
No release notes.
v1.0.3 (2013-03-05)
===================
No release notes.
v1.0.2 (2013-01-30)
===================
No release notes.
v1.0.1 (2012-12-17)
===================
No release notes.
v1.0.0 (2012-11-02)
===================
No release notes.
v0.10.2 (2012-09-24)
====================
No release notes.
v0.10.1 (2012-08-31)
====================
No release notes.
v0.10.0 (2012-08-29)
====================
No release notes.
v0.9.13 (2012-08-02)
====================
No release notes.
v0.9.12 (2012-05-14)
====================
No release notes.
v0.9.11 (2012-04-03)
====================
No release notes.
v0.9.10 (2012-02-13)
====================
No release notes.
v0.9.9 (2012-01-07)
===================
No release notes.
v0.9.8 (2011-12-08)
===================
No release notes.
v0.9.7 (2011-11-08)
===================
No release notes.
v0.9.6 (2011-09-22)
===================
No release notes.
v0.9.5 (2011-09-20)
===================
No release notes.
v0.9.4 (2011-08-03)
===================
No release notes.
v0.9.3 (2011-07-04)
===================
No release notes.
v0.9.2 (2011-06-06)
===================
No release notes.
v0.9.1 (2011-05-05)
===================
No release notes.
v0.9.0 (2011-04-04)
===================
No release notes.
v0.8.8 (2011-02-17)
===================
No release notes.
v0.8.7 (2011-01-04)
===================
No release notes.
v0.8.6 (2010-11-30)
===================
No release notes.
v0.8.5 (2010-10-29)
===================
No release notes.
v0.8.4 (2010-09-10)
===================
No release notes.
v0.8.3 (2010-08-04)
===================
No release notes.
v0.8.2 (2010-07-05)
===================
No release notes.
v0.8.1 (2010-04-30)
===================
No release notes.
v0.8.0 (2010-04-12)
===================
No release notes.
v0.7.7 (2010-03-05)
===================
No release notes.
v0.7.6 (2010-02-03)
===================
No release notes.
v0.7.5 (2009-12-23)
===================
No release notes.
v0.7.4 (2009-11-20)
===================
No release notes.
v0.7.3 (2009-11-20)
===================
No release notes.
v0.7.2 (2009-10-14)
===================
No release notes.
v0.7.1 (2009-09-15)
===================
No release notes.
v0.7.0 (2009-08-05)
===================
No release notes.
v0.6.5 (2009-07-03)
===================
No release notes.
v0.6.4 (2009-05-29)
===================
No release notes.
v0.6.3 (2009-04-24)
===================
No release notes.
v0.6.2 (2009-04-03)
===================
No release notes.
v0.6.1 (2009-03-03)
===================
No release notes.
v0.6.0 (2009-01-31)
===================
No release notes.
v0.5.1 (2008-12-04)
===================
No release notes.
v0.5.0 (2008-11-25)
===================
No release notes.
v0.4.6 (2008-09-23)
===================
No release notes.
v0.4.5 (2008-09-08)
===================
No release notes.
v0.4.4 (2008-06-25)
===================
No release notes.
v0.4.3 (2008-06-12)
===================
No release notes.
v0.4.2 (2008-04-08)
===================
No release notes.
v0.4.1 (2008-03-03)
===================
No release notes.
v0.4.0 (2007-12-18)
===================
No release notes.
v0.3.3 (2007-09-30)
===================
No release notes.
v0.3.2 (2007-08-21)
===================
No release notes.
v0.3.1 (2007-07-24)
===================
No release notes.
v0.3.0 (2007-07-09)
===================
No release notes.
v0.2.3 (2007-06-08)
===================
No release notes.
v0.2.2 (2007-04-17)
===================
No release notes.
v0.2.1 (2007-03-16)
===================
No release notes.
v0.2.0 (2007-02-14)
===================
No release notes.
v0.1.11 (2007-01-22)
====================
No release notes.
v0.1.10 (2006-12-20)
====================
No release notes.
v0.1.9 (2006-11-29)
===================
No release notes.
v0.1.8 (2006-10-16)
===================
No release notes.
v0.1.7 (2006-09-29)
===================
No release notes.
v0.1.6 (2006-09-22)
===================
No release notes.
v0.1.5 (2006-09-05)
===================
No release notes.
v0.1.4 (2006-08-16)
===================
No release notes.
v0.1.3 (2006-07-11)
===================
No release notes.
v0.1.2 (2006-07-03)
===================
No release notes.
v0.1.1 (2006-06-21)
===================
No release notes.
v0.1.0 (2006-04-10)
===================
No release notes.
v0.0.6 (2006-02-28)
===================
No release notes.
v0.0.5 (2006-02-23)
===================
No release notes.
v0.0.4 (2006-02-10)
===================
No release notes.
v0.0.3 (2006-02-09)
===================
No release notes.
v0.0.2 (2006-01-29)
===================
No release notes.
v0.0.1 (2005-12-19)
===================
No release notes.
.. _git log: https://gitlab.com/libvirt/libvirt/-/commits/master