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<?xml version="1.0"?>

<!-- libvirt release notes

     This file will be processed to produce both HTML and plain text versions
     of the release notes.

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     Keep the style consistent with existing entries as much as possible.

     Each change should be documented by a short, one-sentence summary, which
     should fit in a single line and should not contain any formatting tags.

     You can optionally add a description if you feel like the summary alone is
     not enough to document the change accurately. The description may contain
     a <code> tag for switching to non-proportional font. No other tags are
     allowed.

     Lines should be kept under 80 columns, and should not exceed 100 columns.
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     This file is validated against docs/news.rng schema.
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     Use the following template to add a new release section:

  <release version="FIXME" date="unreleased">
    <section title="New features">
    </section>
    <section title="Improvements">
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      <change>
        <summary>
          Start selecting the first available DRI device for OpenGL operations
        </summary>
        <description>
          If OpenGL support is needed (either with SPICE gl enabled or with
          egl-headless), libvirt is now able to pick the first available DRI
          device for the job. At the same time, this improvement is also a
          bugfix as it prevents permission-related issues with regards to our
          mount namespaces and the default DRI render node's permissions which
          would normally prevent QEMU from accessing such a device.
        </description>
      </change>
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    </section>
    <section title="Bug fixes">
    </section>
  </release>

     -->
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<libvirt>
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Andrea Bolognani 已提交
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  <release version="v5.0.0" date="unreleased">
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    <section title="New features">
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      <change>
        <summary>
          Xen: Add support for openvswitch
        </summary>
        <description>
          The libxl driver now supports virtual interfaces that connect to
          an openvswitch bridge, including interfaces with VLAN tagging and
          trunking configuration.
        </description>
      </change>
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    </section>
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Michal Privoznik 已提交
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    <section title="Removed features">
      <change>
        <summary>
          Drop UML driver
        </summary>
        <description>
          The UML driver was unmaintained and not tested for
          quite some time now. Worse, there is a bug that causes
          it to deadlock on some very basic operations (e.g.
          dumping domain XML). These facts make us believe no one
          uses it.
        </description>
      </change>
    </section>
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    <section title="Improvements">
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      <change>
        <summary>
          qemu: Add support for ARMv6l guests
        </summary>
      </change>
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    </section>
    <section title="Bug fixes">
    </section>
  </release>
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Daniel Veillard 已提交
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  <release version="v4.10.0" date="2018-12-03">
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    <section title="New features">
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      <change>
        <summary>
          qemu: Add Hyper-V PV IPI and Enlightened VMCS support
        </summary>
        <description>
          The QEMU driver now has support for Hyper-V PV IPI and Enlightened VMCS
          for Windows and Hyper-V guests.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Added support for PCI devices on S390
        </summary>
        <description>
          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.
        </description>
      </change>
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      <change>
        <summary>
          Support changing IOThread polling parameters for a live guest
        </summary>
        <description>
          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.
        </description>
      </change>
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      <change>
        <summary>
          Xen: Add support for PVH
        </summary>
        <description>
          The libxl driver now supports Xen's PVH virtual machine type.
          PVH machines are enabled with the new "xenpvh" OS type, e.g.
          <code>&lt;os&gt;&lt;type&gt;xenpvh&lt;/type&gt;&lt;/os&gt;</code>
        </description>
      </change>
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Wang Huaqiang 已提交
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      <change>
        <summary>
          qemu: Added support for CMT (Cache Monitoring Technology)
        </summary>
        <description>
          Introduced cache monitoring using the <code>monitor</code>
          element in <code>cachetune</code> for vCPU threads. Added
          interfaces to get and display the cache utilization statistics
          through the command 'virsh domstats' via the
          virConnectGetAllDomainStats API.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Add support for nested HV for pSeries guests
        </summary>
        <description>
          Nested HV support makes it possible to run nested (L2) guests
          with minimal performance penalty when compared to regular (L1)
          guests on ppc64 hardware.
        </description>
      </change>
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    </section>
    <section title="Improvements">
    </section>
    <section title="Bug fixes">
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      <change>
        <summary>
          Xen: Handle soft reset shutdown event
        </summary>
        <description>
          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.
        </description>
      </change>
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    </section>
  </release>
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Daniel Veillard 已提交
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  <release version="v4.9.0" date="2018-11-04">
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Ján Tomko 已提交
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    <section title="New features">
A
Andrea Bolognani 已提交
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      <change>
        <summary>
          util: Add cgroup v2 support
        </summary>
        <description>
          cgroup v2 support has been implemented in libvirt, with both
          "unified" (v2 only) and "hybrid" (v2 + v1) setups being usable;
          existing "legacy" (v1 only) setups will keep working.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Add vfio AP support
        </summary>
        <description>
          The QEMU driver now has support to passthrough adjunct processors
          into QEMU guests on S390.
        </description>
      </change>
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Ján Tomko 已提交
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    </section>
    <section title="Improvements">
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Andrea Bolognani 已提交
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      <change>
        <summary>
          rpc: Make 'genprotocol' output reproducible
        </summary>
        <description>
          This is another step towards making libvirt builds fully
          reproducible.
        </description>
      </change>
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Ján Tomko 已提交
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    </section>
    <section title="Bug fixes">
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Andrea Bolognani 已提交
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      <change>
        <summary>
          security: Fix permissions for UNIX sockets
        </summary>
        <description>
          Since 4.5.0, libvirt is using FD passing to hand sockets over to
          QEMU, which in theory removes the need for them to be accessible by
          the user under which the QEMU process is running; however, other
          processes such as vdsm need to access the sockets as well, which
          means adjusting permissions is still necessary.
        </description>
      </change>
      <change>
        <summary>
          cpu_map: Add Icelake model definitions
        </summary>
        <description>
          These CPU models will be available in the upcoming 3.1.0 QEMU
          release.
        </description>
      </change>
      <change>
        <summary>
          util: Properly parse URIs with missing trailing slash
        </summary>
        <description>
          Some storage URIs were not parsed correctly, in which case libvirt
          ended up emitting XML that it would then refuse to parse back.
        </description>
      </change>
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Ján Tomko 已提交
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    </section>
  </release>
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Daniel Veillard 已提交
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  <release version="v4.8.0" date="2018-10-01">
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    <section title="New features">
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      <change>
        <summary>
          Xen: Support PM Suspend and Wakeup
        </summary>
        <description>
          The libxl driver now supports the virDomainPMSuspendForDuration
          and virDomainPMWakeup APIs.
        </description>
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      </change>
    </section>
    <section title="Removed features">
      <change>
        <summary>
          Xen: Drop support for Xen 4.4 and 4.5
        </summary>
        <description>
          Xen 4.4 and 4.5 are no longer supported by the Xen community.
          Drop support for these older versions and require Xen >= 4.6.
        </description>
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      </change>
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Fabiano Fidêncio 已提交
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      <change>
        <summary>
          nwfilter: Disallow binding creation in session mode
        </summary>
        <description>
          Ensure that a filter binding creation is not attempted in session
          mode and generates a proper error message.
        </description>
      </change>
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    </section>
    <section title="Improvements">
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      <change>
        <summary>
          qemu: Retrieve guest hostname through QEMU Guest Agent command
        </summary>
	<description>
          QEMU is now able to retrieve the guest hostname using a new QEMU-GA
	  command called 'guest-get-host-name'. Virsh users can execute
          'domhostname' for QEMU driver for domains configured to use the
          Guest Agent.
        </description>
      </change>
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Fabiano Fidêncio 已提交
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      <change>
        <summary>
          virsh: Implement vsh-table in virsh and virsh-admin
        </summary>
        <description>
          The new API fixes problems with table-alignment, making the tables
          more readable and deals with unicode.
        </description>
      </change>
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    </section>
    <section title="Bug fixes">
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Fabiano Fidêncio 已提交
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      <change>
        <summary>
          storage: Allow inputvol to be encrypted
        </summary>
        <description>
          When creating a storage volume based on another volume, the base
          input volume is allowed to be encrypted.
        </description>
      </change>
      <change>
        <summary>
          virsh: Require explicit --domain for domxml-to-native
        </summary>
        <description>
          The --domain option for domxml-to-native virsh command has always
          been documented as required, but commit v4.3.0-127-gd86531daf2
          accidentally made it optional.
        </description>
      </change>
      <change>
        <summary>
          lxc_monitor: Avoid AB / BA lock race
        </summary>
        <description>
          A deadlock situation could occur when autostarting a LXC domain
          'guest' due to two threads attempting to take opposing locks while
          holding opposing locks (AB BA problem).
        </description>
      </change>
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    </section>
  </release>
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Daniel Veillard 已提交
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  <release version="v4.7.0" date="2018-09-03">
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    <section title="New features">
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      <change>
        <summary>
          storage: add storage pool iscsi-direct
        </summary>
        <description>
          Introduce a new storage pool backend that uses libiscsi instead of
          iscsiadm. It support basic pool operations: checkPool and refreshPool.
        </description>
      </change>
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      <change>
        <summary>
          Add support for MBA (Memory Bandwidth Allocation technology)
        </summary>
        <description>
          Domain vCPU threads can now have allocated some parts of host memory
          bandwidth by using the <code>memorytune</code> element in <code>cputune</code>.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Add support for RISC-V guests
        </summary>
        <description>
          riscv32 and riscv64 guest architectures are now supported.
        </description>
      </change>
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    </section>
    <section title="Improvements">
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      <change>
        <summary>
          qemu: Add ccw support for vhost-vsock
        </summary>
        <description>
          Support the vhost-vsock-ccw device on S390.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Make default machine type independent of QEMU
        </summary>
        <description>
          We can't control whether or not QEMU will change its default
          machine type in the future, or whether downstream distributions
          will decide to compile out some machine types, so our only option
          to provide a predictable behavior is taking care of the default
          ourselves; management applications and users are encouraged to
          explicitly pick a machine type when creating new guests.
        </description>
      </change>
      <change>
        <summary>
          apparmor: Various improvements
        </summary>
        <description>
          Rules have been added to deal with a number of scenarios that
          didn't work correctly.
        </description>
      </change>
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    </section>
    <section title="Bug fixes">
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      <change>
        <summary>
          esx: Truncate CPU model name
        </summary>
        <description>
          Some CPU model names are too long to be stored into the
          corresponding property, and should be explicitly truncated
          to avoid unexpected behavior in users of the
          <code>virNodeGetInfo()</code> API such as
          <code>virsh nodeinfo</code>.
        </description>
      </change>
      <change>
        <summary>
          utils: Remove arbitrary limit on socket_id/core_id
        </summary>
        <description>
          Both values were assumed to be smaller than 4096, but in fact
          they are entirely hardware-dependent and there have been reports
          of machines presenting much bigger values, preventing libvirt from
          working correctly; all such limits have now been removed.
        </description>
      </change>
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    </section>
  </release>
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Daniel Veillard 已提交
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  <release version="v4.6.0" date="2018-08-06">
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John Ferlan 已提交
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    <section title="New features">
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      <change>
        <summary>
          qemu: Implement the HTM pSeries feature
        </summary>
        <description>
          Users can now decide whether HTM (Hardware Transactional Memory)
          support should be available to the guest.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Enable VNC console for mediated devices
        </summary>
        <description>
          Host devices now support a new atribute 'display' which can be used
          to turn on frame buffer rendering on a vgpu mediated device instead of
          on an emulated GPU, like QXL.
        </description>
      </change>
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John Ferlan 已提交
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    </section>
    <section title="Improvements">
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      <change>
        <summary>
          qemu: Introduce a new video model of type 'none'
        </summary>
        <description>
          Introduce a new video model type that disables the automatic addition
          of a video device to domains with 'graphics' specified in their XML.
          This can be useful with GPU mediated devices which can serve as the
          only rendering devices within the guest.
        </description>
      </change>
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      <change>
        <summary>
          virsh: Add --alias to attach-disk and attach-interface commands
        </summary>
        <description>
          Add option --alias to set customized device alias name when
          using attach-disk or attach-interface commands.
        </description>
      </change>
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      <change>
        <summary>
          virsh: Support usb and sata address to attach-disk
        </summary>
        <description>
          Usb or sata address could be used when attach-disk with --address.
          For example, use usb address as usb:&lt;bus&gt;.&lt;port&gt;, use
          sata address as &lt;controller&gt;.&lt;bus&gt;.&lt;unit&gt;.
        </description>
      </change>
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John Ferlan 已提交
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    </section>
    <section title="Bug fixes">
    </section>
  </release>
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Daniel Veillard 已提交
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  <release version="v4.5.0" date="2018-07-02">
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    <section title="New features">
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      <change>
        <summary>
          qemu: Provide TPM emulator support
        </summary>
        <description>
          Support QEMU's TPM emulator based on swtpm. Each QEMU guest gets
          its own virtual TPM.
        </description>
      </change>
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      <change>
        <summary>
          bhyve: Support specifying guest CPU topology
        </summary>
        <description>
          Bhyve's guest CPU topology could be specified using the
          <code>&lt;cpu&gt;&lt;topology ../&gt;&lt;/cpu&gt;</code> element.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Add support for extended TSEG size
        </summary>
        <description>
          Support specifying extended TSEG size for SMM in QEMU.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Add support for SEV guests
        </summary>
        <description>
          SEV (Secure Encrypted Virtualization) is a feature available on AMD
          CPUs that encrypts the guest memory and makes it inaccessible even
          to the host OS.
        </description>
      </change>
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    </section>
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    <section title="Removed features">
      <change>
        <summary>
          Remove support for qcow/default encrypted volumes
        </summary>
        <description>
          Disallow using a qcow encrypted volume for the guest and
          disallow creation of the qcow or default encrypted volume
          from the storage driver. Support for qcow encrypted volumes
          has been phasing out since QEMU 2.3 and by QEMU 2.9 creation
          of a qcow encrypted volume via qemu-img required usage of
          secret objects, but that support was never added to libvirt.
        </description>
      </change>
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      <change>
        <summary>
          Make GnuTLS mandatory
        </summary>
        <description>
          Building without GnuTLS is no longer possible.
        </description>
      </change>
      <change>
        <summary>
          qemu: Remove allow_disk_format_probing configuration option
        </summary>
        <description>
          The option represented a security risk when used with malicious
          disk images, so users were recommended against enabling it; with
          this release, it's been removed altogether.
        </description>
      </change>
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    </section>
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    <section title="Improvements">
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      <change>
        <summary>
          capabilities: Provide info about host IOMMU support
        </summary>
        <description>
          Capabilities XML now provide information about host IOMMU support.
        </description>
      </change>
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      <change>
        <summary>
          virsh: Add --all to domblkinfo command
        </summary>
        <description>
          Alter the <code>domblkinfo</code> command to add the option
          --all in order to display the size details of each domain
          block device from one command in a output table.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Allow concurrent access to monitor and guest agent
        </summary>
        <description>
          Historically libvirt prevented concurrent accesses to
          the qemu monitor and the guest agent. Therefore two
          independent calls (one querying the monitor and the
          other querying guest agent) would serialize which hurts
          performance. The code was reworked to allow two
          independent calls run at the same time.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Allow configuring the page size for HPT pSeries guests
        </summary>
        <description>
          For HPT pSeries guests, the size of the host pages used to back guest
          memory and the usable guest page sizes are connected; the new setting
          can be used to request that a certain page size is available in the
          guest.
        </description>
      </change>
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      <change>
        <summary>
          Add support to use an raw input volume for encryption
        </summary>
        <description>
          It is now possible to provide a raw input volume as input for
          to generate a luks encrypted volume via either virsh vol-create-from
          or virStorageVolCreateXMLFrom.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Add support for vsock hot (un)plug and cold (un)plug
        </summary>
      </change>
      <change>
        <summary>
          qemu: Add support for NBD over TLS
        </summary>
        <description>
          NBD volumes can now be accessed securely.
        </description>
      </change>
      <change>
        <summary>
          qemu: Implement FD passing for Unix sockets
        </summary>
        <description>
          Instead of having QEMU open the socket and then connecting to it,
          which is inherently racy, starting with QEMU 2.12 we can open the
          socket ourselves and pass it to QEMU, avoiding race conditions.
        </description>
      </change>
      <change>
        <summary>
          virsh: Introduce --nowait option for domstat command
        </summary>
        <description>
          When this option is specified, virsh will try to fetch the guest
          stats but abort instead of stalling if they can't be retrieved right
          away.
        </description>
      </change>
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    </section>
    <section title="Bug fixes">
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      <change>
        <summary>
          qemu: Fix a potential libvirtd crash on VM reconnect
        </summary>
        <description>
          Initialization of the driver worker pool needs to come before libvirtd
          trying to reconnect to all machines, since one of the QEMU processes
          migh have already emitted events which need to be handled prior to
          us getting to the worker pool initialization.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Fix domain resume after failed migration
        </summary>
        <description>
          Recent versions of QEMU activate block devices before the guest CPU
          has been started, which makes it impossible to roll back a failed
          migration. Use the <code>late-block-activate</code> migration
          capability if supported to avoid the issue.
        </description>
      </change>
      <change>
        <summary>
          vmx: Permit guests to have an odd number of vCPUs
        </summary>
        <description>
          An odd number of vCPUs greater than 1 was forbidden in the past,
          but current versions of ESXi have lifted that restriction.
        </description>
      </change>
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    </section>
  </release>
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Daniel Veillard 已提交
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  <release version="v4.4.0" date="2018-06-04">
J
Ján Tomko 已提交
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    <section title="New features">
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      <change>
        <summary>
          bhyve: Support locking guest memory
        </summary>
        <description>
          Bhyve's guest memory may be wired using the
          <code>&lt;memoryBacking&gt;&lt;locked/&gt;&lt;/memoryBacking&gt;</code>
          element.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Provide VFIO channel I/O passthrough support
        </summary>
        <description>
          Support passthrough devices that use channel I/O based mechanism in
          a QEMU virtual machine.
        </description>
      </change>
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      <change>
        <summary>
          qemu: Add support for migration of VMs with non-shared storage over TLS
        </summary>
        <description>
          It's now possible to use the VIR_MIGRATE_TLS flag together with
          VIR_MIGRATE_NON_SHARED_DISK. The connection is then secured using the
          TLS environment which is setup for the migration connection.
        </description>
      </change>
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      <change>
        <summary>
          Add support for VM Generation ID
        </summary>
        <description>
          The VM Generatation ID exposes a 128-bit, cryptographically
          random, integer value identifier, referred to as a Globally
          Unique Identifier (GUID) to the guest in order to notify the
          guest operating system when the virtual machine is executed
          with a different configuration. Add a new domain XML processing
          and a domain capabilities feature.
        </description>
      </change>
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      <change>
        <summary>
          Introduce virDomainDetachDeviceAlias
        </summary>
        <description>
          This new API enables users to detach device using only its alias.
        </description>
      </change>
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      <change>
        <summary>
          Introduce new virConnectCompareHypervisorCPU and virConnectBaselineHypervisorCPU APIs
        </summary>
        <description>
          Unlike the old virConnectCompareCPU and virConnectBaselineCPU APIs,
          both new APIs consider capabilities of a specific hypervisor.
        </description>
      </change>
720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738
      <change>
        <summary>
          Introduce SCSI persistent reservations support
        </summary>
        <description>
          The QEMU driver gained support for qemu-pr-helper which enables
          guests to issue SCSI commands for persistent reservation.
        </description>
      </change>
      <change>
        <summary>
          qemu: Implement multiple screen support for virDomainScreenshot
        </summary>
        <description>
          While the virDomainScreenshot API supported multihead video cards,
          the implementation was missing. But now that QEMU implemented it
          libvirt has done as well.
        </description>
      </change>
J
Ján Tomko 已提交
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      <change>
        <summary>
          qemu: add support for vhost-vsock-device
        </summary>
        <description>
          A new vsock device was introduced, allowing communication between
          the guest and the host via the AF_VSOCK family.
        </description>
      </change>
J
Ján Tomko 已提交
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    </section>
    <section title="Improvements">
750 751 752 753 754 755 756 757 758
      <change>
        <summary>
          qemu: Add suport for OpenGL rendering with SDL
        </summary>
        <description>
          Domains using SDL as a graphics backend will now be able to use
          OpenGL accelerated rendering.
        </description>
      </change>
759 760 761 762 763 764 765 766 767
      <change>
        <summary>
          qemu: Add support for 'output' audio codec
        </summary>
        <description>
          Support QEMU's 'hda-output' codec advertising only a line-out for ich6
          and ich9 sound devices.
        </description>
      </change>
L
Lin Ma 已提交
768 769 770 771 772 773 774 775 776
      <change>
        <summary>
          virsh: Enhance event name completion
        </summary>
        <description>
          Implement event name completion for some commands (e.g. event,
          secret-event, pool-event and nodedev-event)
        </description>
      </change>
J
Ján Tomko 已提交
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    </section>
    <section title="Bug fixes">
    </section>
  </release>
D
Daniel Veillard 已提交
781
  <release version="v4.3.0" date="2018-05-02">
782
    <section title="New features">
783 784 785 786 787 788 789 790 791
      <change>
        <summary>
          qemu: Add support for the pcie-to-pci-bridge controller
        </summary>
        <description>
          Pure PCIe guests such as x86_64/q35 and aarch64/virt will now
          add this controller when traditional PCI devices are in use.
        </description>
      </change>
792 793 794 795 796 797 798 799 800 801 802 803
      <change>
        <summary>
          Xen: Support setting CPU features for host-passthrough model
        </summary>
        <description>
          The CPU model presented to Xen HVM domains is equivalent to libvirt's
          host-passthrough model, although individual features can be enabled
          and disabled via the cpuid setting. The libvirt libxl driver now
          supports enabling and disabling individual features of the
          host-passthrough CPU model.
        </description>
      </change>
804
    </section>
805 806 807 808 809 810 811 812 813 814 815 816
    <section title="Removed features">
      <change>
        <summary>
          Xen: Drop the legacy xend-based driver
        </summary>
        <description>
          The xm/xend toolstack was deprecated in Xen 4.2 and removed
          from the Xen sources in the 4.5 development cycle. The libvirt
          driver based on xend is now removed from the libvirt sources.
        </description>
      </change>
    </section>
817
    <section title="Improvements">
818 819 820 821 822 823 824 825 826 827
      <change>
        <summary>
          qemu: Support hot plug and hot unplug of mediated devices
        </summary>
        <description>
          Libvirt now allows mediated devices to be hot plugged and hot
          unplugged from a guest rather than reporting an error that this isn't
          supported. In fact, kernel has been supporting this since 4.10.
        </description>
      </change>
828 829
    </section>
    <section title="Bug fixes">
830 831 832 833 834 835 836 837 838 839 840 841
      <change>
        <summary>
          Improve handling of device mapper targets
        </summary>
        <description>
          When starting a domain with a disk backed by a device
          mapper volume libvirt also needs to allow the storage
          backing the device mapper in CGroups. In the past
          kernel did not care, but starting from 4.16 CGroups are
          consulted on each access to the device mapper target.
        </description>
      </change>
842 843
    </section>
  </release>
D
Daniel Veillard 已提交
844
  <release version="v4.2.0" date="2018-04-01">
845
    <section title="New features">
846 847 848 849 850 851 852 853 854 855 856
      <change>
        <summary>
          Support building with Python 3
        </summary>
        <description>
          Python is required to build libvirt, and up until now only Python 2
          could be used as an interpreter. All scripts used during build have
          now been made compatible with Python 3, which means both major
          releases of the language are fully supported.
        </description>
      </change>
857 858 859 860 861 862 863 864 865 866
      <change>
        <summary>
          qemu: Provide ccw address support for graphics and input devices
        </summary>
        <description>
          Support the virtio-gpu-ccw device as a video device and
          virtio-{keyboard, mouse, tablet}-ccw devices as input devices
          on S390.
        </description>
      </change>
867 868
    </section>
    <section title="Improvements">
869 870 871 872 873 874 875 876 877
      <change>
        <summary>
          qemu: Add logging of guest crash information on S390
        </summary>
        <description>
          On S390, when the guest crashes and QEMU exposes the guest crash
          information, log the relevant data to the domain log file.
        </description>
      </change>
878 879 880 881 882 883 884 885 886
      <change>
        <summary>
          qemu: use arp table of host to get the IP address of guests
        </summary>
        <description>
          Find IP address of a VM by arp table on hosts.
          If someone customizing IP address inside VM, it will be helpful.
        </description>
      </change>
887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902
      <change>
        <summary>
          Xen: Remove hard-coded scheduler weight
        </summary>
        <description>
          The libxl driver was accidentally hard-coding the per-domain
          scheduler weight to 1000, silently ignoring any user-provided
          <code>&lt;shares&gt;</code> in <code>&lt;cputune&gt;</code>. The
          driver now honors <code>&lt;shares&gt;</code>, 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.
        </description>
      </change>
903 904
    </section>
    <section title="Bug fixes">
905 906 907 908 909 910 911 912 913 914 915 916
      <change>
        <summary>
          qemu: TLS migration now enforces use of TLS for the NBD connection
        </summary>
        <description>
          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.
        </description>
      </change>
917 918
    </section>
  </release>
D
Daniel Veillard 已提交
919
  <release version="v4.1.0" date="2018-03-05">
920
    <section title="New features">
921 922 923 924 925 926 927 928 929
      <change>
        <summary>
          Added support for CAT (Cache allocation Technology)
        </summary>
        <description>
          Domain vCPU threads can now have allocated some parts of host cache
          using the <code>cachetune</code> element in <code>cputune</code>.
        </description>
      </change>
M
Michal Privoznik 已提交
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      <change>
        <summary>
          Allow opening secondary drivers
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          virtlogd, virtlockd: Add support for admin protocol
        </summary>
        <description>
          These two daemons now support admin protocol through which some admin
          info can be gathered or some configuration tweaked on the fly.
        </description>
      </change>
952 953
    </section>
    <section title="Improvements">
954 955 956 957 958 959 960 961 962 963
      <change>
        <summary>
          virsh: Enhance bash completion
        </summary>
        <description>
          Implement more bash completions so that basic libvirt
          objects can be auto-completed (e.g. networks,
          interfaces, NWFilters, and so on).
        </description>
      </change>
964 965 966 967 968
      <change>
        <summary>
          qemu: Use VIR_ERR_DEVICE_MISSING for various hotplug/detach messages
        </summary>
      </change>
969 970 971 972 973 974 975 976 977 978 979
      <change>
        <summary>
          qemu: Allow showing the dump progress for memory only dump
        </summary>
        <description>
          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.
        </description>
      </change>
980 981 982 983 984
      <change>
        <summary>
          conf: add support for setting Chassis SMBIOS data fields
        </summary>
      </change>
985 986 987 988 989
      <change>
        <summary>
          libxl: add support for setting clock offset and adjustment
        </summary>
      </change>
M
Michal Privoznik 已提交
990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005
      <change>
        <summary>
          Make port allocator global
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          Fixed some compiler warnings that appear with GCC 8
        </summary>
      </change>
1006 1007
    </section>
    <section title="Bug fixes">
M
Michal Privoznik 已提交
1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080
      <change>
        <summary>
          qemu: Check for unsafe migration more thoroughly
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          qemu: Fix updating device with boot order
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          virlog: determine the hostname on startup CVE-2018-6764
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          qemu: Rework vCPU statistics fetching
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          qemu: unlink memory backing file on domain shutdown
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          qemu: Fix shutting down domains in parallel
        </summary>
        <description>
          If multiple domains were being shut down in parallel, libvirtd might
          have deadlocked.
        </description>
      </change>
      <change>
        <summary>
          nodedev: Update PCI mdev capabilities dynamically
        </summary>
        <description>
          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.
        </description>
      </change>
1081 1082
    </section>
  </release>
D
Daniel Veillard 已提交
1083
  <release version="v4.0.0" date="2018-01-19">
1084
    <section title="New features">
A
Andrea Bolognani 已提交
1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108
      <change>
        <summary>
          tools: Provide bash completion support
        </summary>
        <description>
          Both <code>virsh</code> and <code>virt-admin</code> now implement
          basic bash completion support.
        </description>
      </change>
      <change>
        <summary>
          qemu: Refresh capabilities on host microcode update
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          lxc: Set hostname based on container name
        </summary>
      </change>
1109 1110
    </section>
    <section title="Improvements">
A
Andrea Bolognani 已提交
1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126
      <change>
        <summary>
          CPU frequency reporting improvements
        </summary>
        <description>
          The CPU frequency will now be reported by <code>virsh nodeinfo</code>
          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.
        </description>
      </change>
      <change>
        <summary>
          libxl: Mark domain0 as persistent
        </summary>
      </change>
1127 1128
      <change>
        <summary>
J
John Ferlan 已提交
1129
          Xen: Add support for multiple IP addresses on interface devices
1130 1131
        </summary>
      </change>
1132 1133 1134 1135 1136
      <change>
        <summary>
          qemu: Add support for hot unplugging redirdev device
        </summary>
      </change>
1137 1138
    </section>
    <section title="Bug fixes">
A
Andrea Bolognani 已提交
1139 1140 1141 1142 1143 1144 1145 1146 1147 1148
      <change>
        <summary>
          qemu: Enforce vCPU hotplug granularity constraints
        </summary>
        <description>
          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.
        </description>
      </change>
1149 1150
    </section>
  </release>
D
Daniel Veillard 已提交
1151
  <release version="v3.10.0" date="2017-12-04">
1152
    <section title="New features">
1153 1154 1155 1156 1157 1158 1159 1160
      <change>
        <summary>
          conf: Support defining distances between virtual NUMA cells
        </summary>
        <description>
          A NUMA hardware architecture supports the notion of distances
          between NUMA cells. This can now be specified using the
          <code>&lt;distances&gt;</code> element within the NUMA cell
1161
          configuration. Drivers which support this include Xen and QEMU.
1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172
        </description>
      </change>
      <change>
        <summary>
          Xen: Support defining vNUMA topology
        </summary>
        <description>
          Xen now supports defining a virtual NUMA topology for VMs,
          including specifying distances between NUMA cells.
        </description>
      </change>
1173 1174 1175 1176 1177 1178 1179 1180 1181 1182
      <change>
        <summary>
          qemu: Add the ability to configure HPT resizing for pSeries guests
        </summary>
        <description>
          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.
        </description>
      </change>
1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193
      <change>
        <summary>
          qemu: Add vmcoreinfo feature
        </summary>
        <description>
          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.
        </description>
      </change>
1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206
      <change>
        <summary>
          conf: Move the auth and encryption definitions to disk source
        </summary>
        <description>
          Allow parsing and formatting of the <code>auth</code> and
          <code>encryption</code> sub-elements to be a child of the
          <code>source</code> element. This will allow adding an
          <code>auth</code> sub-element to a <code>backingStore</code>
          or <code>mirror</code> elements as a means to track specific
          authentication and/or encryption needs.
        </description>
      </change>
1207 1208
    </section>
    <section title="Improvements">
D
Dawid Zamirski 已提交
1209 1210 1211 1212 1213
      <change>
        <summary>
          vbox: Add VirtualBox 5.2 support
        </summary>
      </change>
1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254
      <change>
        <summary>
          vbox: Add support for configuring storage controllers
        </summary>
        <description>
          The VirtualBox driver now supports the <code>&lt;controller&gt;</code>
          element in the domain XML for configuring storage controllers in VBOX
          VMs.  Additionally, libvirt's domain XML schema was updated to allow
          optional <code>model</code> attribute for <code>&lt;controller
              type='ide'&gt;</code> 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 <code>dumpxml</code> generates
          <code>&lt;controller&gt;</code> elements that correspond to current
          VBOX VM storage controller configuration.
        </description>
      </change>
      <change>
        <summary>
          vbox: Add support for attaching empty removable disks
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          vbox: Add support for attaching SAS storage controllers
        </summary>
        <description>
          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 <code>&lt;controller
              type='scsi' model='lsisas1068'&gt;</code> element. If there are
          both SCSI and SAS controllers present in the VBOX VM, the domain XML
          can associate the disk device using the <code>&lt;address&gt;</code>
          element with the <code>controller</code> attribute, and optionally,
          set the port via <code>unit</code> attribute.
        </description>
      </change>
1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265
      <change>
        <summary>
          qemu: Generate predictable paths for qemu memory backends
        </summary>
        <description>
          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.
        </description>
      </change>
P
Peter Krempa 已提交
1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278
      <change>
        <summary>
          Shareable disks work properly with recent qemu
        </summary>
        <description>
          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.
        </description>
      </change>
1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290
      <change>
        <summary>
          Improve serial console behavior on non-x86 architectures
        </summary>
        <description>
          ppc64, aarch64 and s390x guests were treating the &lt;serial&gt;
          and &lt;console&gt; 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.
        </description>
      </change>
1291 1292
    </section>
    <section title="Bug fixes">
1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325
      <change>
        <summary>
          vbox: Do not ignore failures to attach disk devices when defining
        </summary>
        <description>
          The <code>define</code> now fails and reports an error if any of the
          <code>controller</code> or <code>disk</code> devices specified in the
          domain XML fail to attach to the VirtualBox VM.
        </description>
      </change>
      <change>
        <summary>
          vbox: Fix dumpxml to always output disk devices
        </summary>
        <description>
          The VirtualBox driver was ignoring any disk devices in
          <code>dumpxml</code> output if there was a SAS storage controller
          attached to the VM.
        </description>
      </change>
      <change>
        <summary>
          vbox: Fix dumpxml to always generate valid domain XML
        </summary>
        <description>
          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.
        </description>
      </change>
1326 1327 1328 1329 1330 1331 1332 1333 1334 1335
      <change>
        <summary>
          Securely pass iSCSI authentication data
        </summary>
        <description>
          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.
        </description>
      </change>
1336 1337
    </section>
  </release>
D
Daniel Veillard 已提交
1338
  <release version="v3.9.0" date="2017-11-02">
P
Peter Krempa 已提交
1339
    <section title="New features">
1340 1341 1342 1343 1344
      <change>
        <summary>
          Add capability to allow hot (un)plug of a domain watchdog device
        </summary>
      </change>
M
Michal Privoznik 已提交
1345 1346 1347 1348 1349 1350 1351 1352 1353
      <change>
        <summary>
          Allow users to set device aliases
        </summary>
        <description>
          Users can set aliases to domain devices and thus identify them
          easily.
        </description>
      </change>
A
Andrea Bolognani 已提交
1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385
      <change>
        <summary>
          qemu: Support multiqueue for virtio-blk
        </summary>
        <description>
          Multiqueue support for <code>virtio-blk</code> has been available
          in QEMU ever since 2.7.0, and now libvirt guests can enable it.
        </description>
      </change>
      <change>
        <summary>
          Add virDomainSetLifecycleAction API
        </summary>
        <description>
          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 <code>on_poweroff</code>, <code>on_reboot</code>,
          and <code>on_crash</code> elements. The
          <code>virsh set-lifecycle-action</code> command was created to
          control the actions.
        </description>
      </change>
      <change>
        <summary>
          qemu: Allow cold(un)plugging and hot(un)plugging input devices
        </summary>
      </change>
      <change>
        <summary>
          net: Implement QoS for vhostuser
        </summary>
      </change>
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Peter Krempa 已提交
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    </section>
    <section title="Improvements">
J
John Ferlan 已提交
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      <change>
        <summary>
          Allow a logical volume to be create using LUKS
        </summary>
        <description>
          A logical volume may be created using an <code>encryption</code>
          element using "luks" format. This does require a previously created
          <code>secret</code> 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.
        </description>
      </change>
A
Andrea Bolognani 已提交
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      <change>
        <summary>
          net: Ignore auto-generated MAC address when detaching an interface
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          net: Enable MAC address lookup for virDomainInterfaceStats
        </summary>
      </change>
      <change>
        <summary>
          apparmor: Several improvements
        </summary>
        <description>
          Changes include permitting access to data about USB devices and
          <code>dnsmasq</code> instances, allowing spaces in guest names and
          many more.
        </description>
      </change>
      <change>
        <summary>
          cpu: Use CPU information obtained from QEMU when possible
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          hyperv: Various improvements
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          qemu: Report QEMU error on failed migration
        </summary>
        <description>
          Instead of reporting a generic error, ask QEMU for a more detailed
          and thus hopefully more helpful one.
        </description>
      </change>
      <change>
        <summary>
          vbox: Implement autoport for RDP
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          qemu: Allow rotation of small logs
        </summary>
        <description>
          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 <code>/var/log/libvirt/qemu/</code>
          directory. Removing the constraints that log have to be bigger than
          100 KiB before they can be rotated solves the issue.
        </description>
      </change>
P
Peter Krempa 已提交
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    </section>
    <section title="Bug fixes">
1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492
      <change>
        <summary>
          Fix swapped interface statistics and QoS
        </summary>
        <description>
          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.
        </description>
      </change>
J
John Ferlan 已提交
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      <change>
        <summary>
          Properly resize local LUKS encrypted volume
        </summary>
        <description>
          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.
        </description>
      </change>
A
Andrea Bolognani 已提交
1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536
      <change>
        <summary>
          qemu: Reserve PCI addresses for implicit i440fx devices
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          spec: Restart libvirtd only at the end of the upgrade process
        </summary>
        <description>
          Use <code>%posttrans</code> to make sure <code>libvirtd</code>
          is not restarted before all other components, such as the library
          itself and storage / hypervisor drivers, have already been upgraded.
        </description>
      </change>
    </section>
    <section title="Security">
      <change>
        <summary>
          qemu: Ensure TLS clients always verify the server certificate
        </summary>
        <description>
          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.
        </description>
      </change>
P
Peter Krempa 已提交
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    </section>
  </release>
D
Daniel Veillard 已提交
1539
  <release version="v3.8.0" date="2017-10-04">
1540
    <section title="New features">
1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560
      <change>
        <summary>
          qemu: Added support for cold-(un)plug of watchdog devices
        </summary>
      </change>
      <change>
        <summary>
          qemu: Added support for setting IP address os usernet interfaces
        </summary>
      </change>
      <change>
        <summary>
          qemu: Added support for Veritas Hyperscale (VxHS) block devices
        </summary>
      </change>
      <change>
        <summary>
          storage: Added new events for pool-build and pool-delete
        </summary>
      </change>
1561 1562
    </section>
    <section title="Improvements">
1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574
      <change>
        <summary>
          qemu: Set DAC permissions properly for spice rendernode
        </summary>
        <description>
          When a <code>rendernode</code> path is set for SPICE GL on
          <code>qemu:///system</code>, we now correctly set DAC permissions
          on the device at VM startup. This is the last remaining hurdle to
          let SPICE GL work for <code>qemu:///system</code> without any
          external host changes.
        </description>
      </change>
1575 1576 1577 1578 1579 1580 1581
      <change>
        <summary>
          nodedev: Add switchdev offload query to NIC capabilities
        </summary>
        <description>
            Allow querying the NIC interface capabilities for the
            availability of switchdev offloading (also known as
1582
            kernel-forward-plane-offload).
1583 1584
        </description>
      </change>
1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604
      <change>
        <summary>
          New CPU models for AMD and Intel
        </summary>
        <description>
          AMD EPYC and Intel Skylake-Server CPU models were added together with
          their features
        </description>
      </change>
      <change>
        <summary>
          Improve long waiting when saving a domain
        </summary>
        <description>
          While waiting for a write to disk to be finished, e.g. during save,
          even simple operations like <code>virsh list</code> would be blocking
          due to domain lock. This is now resolved by unlocking the domain
          in places where it is not needed.
        </description>
      </change>
1605 1606
    </section>
    <section title="Bug fixes">
1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647
      <change>
        <summary>
          Proper units are now used in virsh manpage for dom(mem)stats
        </summary>
        <description>
          Previously the documentation used multiples of 1000, but now it is
          fixed to use multiples of 1024.
        </description>
      </change>
      <change>
        <summary>
          qemu: Fix error reporting when disk attachment fails
        </summary>
        <description>
          There was a possibility for the actual error to be overridden or
          cleared during the rollback.
        </description>
      </change>
      <change>
        <summary>
          qemu: Fix assignment of graphics ports after daemon restart
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          Fix message decoding which was causing a very strange bug
        </summary>
        <description>
          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.
        </description>
      </change>
1648 1649
    </section>
  </release>
D
Daniel Veillard 已提交
1650
  <release version="v3.7.0" date="2017-09-04">
1651
    <section title="New features">
1652 1653 1654 1655 1656 1657 1658 1659 1660 1661
      <change>
        <summary>
          qemu: Add managedsave-edit commands
        </summary>
        <description>
          Using managedsave-dumpxml, managedsave-define and managedsave-edit
          commands, now we can dump and edit the XML configuration of domain
          which has managedsave image.
        </description>
      </change>
1662 1663
      <change>
        <summary>
1664 1665 1666 1667 1668 1669 1670 1671
          qemu: Add migrate-getmaxdowntime command
        </summary>
        <description>
          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
        </description>
      </change>
1672 1673 1674 1675 1676 1677 1678 1679 1680 1681
      <change>
        <summary>
          bhyve: Support autoport for VNC ports
        </summary>
        <description>
          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.
        </description>
      </change>
1682 1683 1684 1685 1686
      <change>
        <summary>
          qemu: Added support for setting heads of virtio GPU
        </summary>
      </change>
1687 1688 1689 1690 1691 1692 1693 1694 1695
      <change>
        <summary>
          qemu: Added support to configure reconnect timeout for chardev devices
        </summary>
        <description>
          When you have a TCP or UNIX chardev device and it's connected somewhere
          you can configure reconnect timeout if the connection is closed.
        </description>
      </change>
1696 1697
    </section>
    <section title="Improvements">
P
Peter Krempa 已提交
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      <change>
        <summary>
          qemu: Report a clear error when dropping a VM during startup
        </summary>
        <description>
          "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).
        </description>
      </change>
1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745
      <change>
        <summary>
          apparmor: Update for QEMU 2.10 compatibility
        </summary>
        <description>
          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
          <code>virt-aa-helper</code> or AppArmor will reject the requests and
          the guest will not be able to run.
        </description>
      </change>
      <change>
        <summary>
          virsh: List Unix sockets in 'domdisplay' output
        </summary>
        <description>
          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 <code>virsh domdisplay</code>, causing the respective
          endpoints to be missing from the output.
        </description>
      </change>
      <change>
        <summary>
          qemu: Don't check whether offline migration is safe
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          virt-host-validate: Fix IOMMU detection on ppc64
        </summary>
      </change>
1746 1747
    </section>
    <section title="Bug fixes">
1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767
      <change>
        <summary>
          qemu: Better support for international domain names (with wide characters)
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          qemu: Support long domain names with namespaces
        </summary>
        <description>
          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.
        </description>
      </change>
P
Peter Krempa 已提交
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      <change>
        <summary>
          qemu: Tolerate missing emulator binary during libvirtd restart
        </summary>
        <description>
          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.
        </description>
      </change>
1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792
      <change>
        <summary>
          qemu: Prevent pSeries guests from disappearing in some situations
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
1793
          qemu: Honor &lt;on_reboot/&gt; setting
1794 1795 1796 1797 1798 1799 1800
        </summary>
        <description>
          The setting was accepted by the parser, but not actually implemented.
        </description>
      </change>
      <change>
        <summary>
1801
          Fix --verbose option for all daemons
1802 1803
        </summary>
        <description>
1804
          Since v3.0.0, the option had been ignored by all libvirt daemons
1805 1806 1807 1808
          (<code>libvirtd</code>, <code>virtlogd</code> and
          <code>virtlockd</code>); it's now working as intended once again.
        </description>
      </change>
1809 1810
    </section>
  </release>
D
Daniel Veillard 已提交
1811
  <release version="v3.6.0" date="2017-08-02">
J
John Ferlan 已提交
1812
    <section title="New features">
1813 1814 1815 1816 1817
      <change>
        <summary>
          hyperv: Implement virDomainSetMemory and virDomainSendKey APIs
        </summary>
      </change>
1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828
      <change>
        <summary>
          qemu: Support multiple PHBs for pSeries guests
        </summary>
        <description>
          pSeries guests can now have multiple PHBs (PCI Host Bridges), which
          show up as separate PCI domains in the guest. To create additional
          PHBs, simply add PCI controllers with model <code>pci-root</code>
          to the guest configuration.
        </description>
      </change>
1829 1830 1831 1832 1833 1834 1835 1836 1837 1838
      <change>
        <summary>
          qemu: Isolate hostdevs on pSeries guests
        </summary>
        <description>
          To enable better error reporting and recovery, unrelated hostdevs
          will now be automatically isolated on pSeries guests by placing them
          on separate PHBs (PCI Host Bridges).
        </description>
      </change>
J
John Ferlan 已提交
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    </section>
    <section title="Improvements">
1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852
      <change>
        <summary>
          qemu: platform serial devices can now use chardev features
        </summary>
        <description>
          QEMU VMs that depend on platform serial devices can now use
          QEMU's <code>-chardev</code> option, which enables access to
          advanced features like log file configuration. This applies
          to the default serial devices for arm, aarch64, and some ppc
          configurations.
        </description>
      </change>
1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869
      <change>
        <summary>
          Require use of GCC 4.4 or Clang compilers
        </summary>
        <description>
          We only ever test libvirt with GCC or Clang (which
          provides a GCC compatible compilation environment).
          Between them, these compilers cover every supported
          operating system platform, including Windows.
        </description>
      </change>
      <change>
        <summary>
          qemu: shared disks with directsync cache should be safe for migration
        </summary>
        <description>
          At present shared disks can be migrated with either readonly or
1870
          <code>cache=none</code>. But <code>cache=directsync</code> should be
1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883
          safe for migration, because both <code>cache=directsync</code> and
          <code>cache=none</code> don't use the host page cache, and
          <code>cache=direct</code> write through qemu block layer cache.
        </description>
      </change>
      <change>
        <summary>
          Handle hotplug change on VLAN configuration using OVS
        </summary>
        <description>
          Libvirt was taught to handle VLAN change for running OVS interface.
        </description>
      </change>
J
John Ferlan 已提交
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    </section>
    <section title="Bug fixes">
1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907
      <change>
        <summary>
          qemu: Use vCPU 'node-id' property and pass it back to qemu
        </summary>
        <description>
          vCPU properties gathered from query-hotpluggable-cpus need to be
          passed back to QEMU. As QEMU did not use the node-id property until
          now and libvirt forgot to pass it back properly (it was parsed but
          not passed around) we did not honor this.
        </description>
      </change>
      <change>
        <summary>
          Miscellaneous stream fixes
        </summary>
        <description>
          After introducing sparse stream features there were still some known
          bugs left. Those are fixed in this release.
        </description>
      </change>
      <change>
        <summary>
A
Andrea Bolognani 已提交
1908
          qemu: Miscellaneous domain NS fixes
1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923
        </summary>
        <description>
          Libvirt starts qemu domains in separate Linux namespaces for a while
          now. However, there were still some bugs lingering. For instance
          libvirt did not know how to handle file based bind mounts.
        </description>
      </change>
      <change>
        <summary>
          Various CPU driver improvements
        </summary>
        <description>
          There were some minor bugs when using 'host-model' CPU.
        </description>
      </change>
J
John Ferlan 已提交
1924 1925
    </section>
  </release>
D
Daniel Veillard 已提交
1926
  <release version="v3.5.0" date="2017-07-04">
1927
    <section title="New features">
1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938
      <change>
        <summary>
          qemu: Add support for loadparm for a boot device
        </summary>
        <description>
          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.
        </description>
      </change>
1939 1940 1941 1942 1943 1944 1945
      <change>
        <summary>
          Support controlling how video devices are exposed to the bhyve guests
        </summary>
        <description>
          The <code>vgaconf</code> attribute was added to <code>video</code>'s
          <code>driver</code> element. Possible values are: <code>on</code>,
V
Ville Skyttä 已提交
1946
          <code>off</code>, and <code>io</code>. It controls the way how
1947 1948 1949 1950
          bhyve exposes video devices to its guests; various guest OSes might
          require different settings to boot properly.
        </description>
      </change>
1951 1952 1953 1954 1955 1956 1957 1958 1959 1960
      <change>
        <summary>
          qemu: Add support for live updates of coalesce settings
        </summary>
        <description>
          Users can now use <code>virsh update-device</code> to change
          the coalesce settings of an interfaces while the domain is
          running.
        </description>
      </change>
1961 1962 1963 1964 1965 1966 1967 1968 1969
      <change>
        <summary>
          qemu: Allow VirtIO devices to use vIOMMU
        </summary>
        <description>
          It is now possible to turn on IOTBL for the vIOMMU and have VirtIO
          devices use it, provided they have been configured appropriately.
        </description>
      </change>
1970 1971
    </section>
    <section title="Improvements">
1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992
      <change>
        <summary>
          qemu: block copy job can be used with persistent domains
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          JSON pseudo-protocol backing store parser supports new format of qemu 2.9
        </summary>
        <description>
          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.
        </description>
      </change>
1993 1994 1995 1996 1997 1998 1999 2000 2001
      <change>
        <summary>
          Capabilities now include info about host's CAT settings
        </summary>
        <description>
          Various information about resource control from the host is
          gathered and presented in capabilities if available.
        </description>
      </change>
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
      <change>
        <summary>
          apparmor: Several improvements
        </summary>
        <description>
          Allow access to Ceph config, EFI firmware on both x86_64 and
          aarch64, device tree on ppc64 and more.
        </description>
      </change>
      <change>
        <summary>
          qemu: Support host-model on POWER9 machines
        </summary>
      </change>
2016 2017
    </section>
    <section title="Bug fixes">
2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030
      <change>
        <summary>
          qemu: snapshot: retrieve image metadata from user provided files
        </summary>
        <description>
          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.
        </description>
      </change>
2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089
      <change>
        <summary>
          Parse decimal numbers in a locale-independent way
        </summary>
        <description>
          Some locales, such as <code>de_DE</code> and <code>pt_BR</code>,
          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.
        </description>
      </change>
      <change>
        <summary>
          Support compilation with newer compiler and libc versions
        </summary>
        <description>
          Several fixes have been included to make compilation with Clang
          4.0.0, GCC 7.1 and glibc >= 2.25.90 possible.
        </description>
      </change>
      <change>
        <summary>
          qemu: Query name for vhost-user interfaces at runtime
        </summary>
        <description>
          This makes it possible to use <code>virsh</code> subcommands such
          as <code>domiflist</code> and <code>domifstat</code> on vhost-user
          interfaces.
        </description>
      </change>
      <change>
        <summary>
          qemu: Set MTU for hotplugged interfaces correctly
        </summary>
        <description>
          When hotplugging a network interface, the MTU was only set on the
          guest side. Set it on the host side as well.
        </description>
      </change>
      <change>
        <summary>
          qemu: Forbid updating MTU for interfaces of running guests
        </summary>
        <description>
          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.
        </description>
      </change>
      <change>
        <summary>
          qemu: Fix specifying QXL heads with older QEMU releases
        </summary>
        <description>
          Specifying the number of QXL heads was not working correctly for
          QEMU releases older than 1.6.
        </description>
      </change>
2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101
      <change>
        <summary>
          qemu: Fix migration to older libvirt/QEMU versions
        </summary>
        <description>
          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.
        </description>
      </change>
2102 2103
    </section>
  </release>
D
Daniel Veillard 已提交
2104
  <release version="v3.4.0" date="2017-06-02">
2105
    <section title="New features">
M
Michal Privoznik 已提交
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      <change>
        <summary>
          Improved streams to efficiently transfer sparseness
        </summary>
        <description>
          New extension to virStream was implemented so that
          virStorageVolDownload and virStorageVolUpload can preserve file
          sparseness.
        </description>
      </change>
2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136
      <change>
        <summary>
          I/O APIC type can be specified for QEMU/KVM domains
        </summary>
        <description>
          The <code>ioapic</code> tag was added to domain
          <code>features</code>, so the type of the I/O APIC can now
          be specified (e.g. putting it in userspace for KVM domains).
        </description>
      </change>
      <change>
        <summary>
          The reason for VM shutdown is reported, if known
        </summary>
        <description>
          QEMU 2.10 will be able to report the reason for shutting
          down (whether that was caused by the guest or not), and
          libvirt is prepared for that and reports that information in
          its shutdown event as well, if it is known.
        </description>
      </change>
2137 2138
    </section>
    <section title="Improvements">
2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149
      <change>
        <summary>
          Repository now has new README.md file
        </summary>
        <description>
          The new file uses markdown syntax, so it looks better on
          github and possibly other web pages, but it has also more
          useful information. The old README is now symlink to the
          new file.
        </description>
      </change>
2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160
      <change>
        <summary>
          qemu: Use GICv2 by default for aarch64/virt TCG guests
        </summary>
        <description>
          The emulated GICv3 has some limitations that make it unusable as a
          default; use GICv2 until they're sorted out. This change makes it
          once again possible to run aarch64/virt guests on a x86_64 host
          without having to tweak their configuration.
        </description>
      </change>
B
Bjoern Walk 已提交
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      <change>
        <summary>
          Additional capabilities for the node_device module
        </summary>
        <description>
          Introduce two new capabilities to the node_device module. The first
          is for CCW devices, most common on the S390 architecture. The second
          is for fibre channel-backed SCSI devices and exposes the
          fc_remote_port sub-capability to SCSI target devices.
M
Martin Kletzander 已提交
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        </description>
B
Bjoern Walk 已提交
2171
      </change>
2172 2173 2174 2175 2176 2177 2178
      <change>
        <summary>
          Node devices now report Mediated device capabilities
        </summary>
        <description>
          Endpoint devices support new <code>mdev</code> capability
          and their parents now report the supported types in new
2179
          <code>mdev_types</code> capability.
2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254
        </description>
      </change>
      <change>
        <summary>
          Capabilities now report information about host caches
        </summary>
        <description>
          If supported in the kernel, host capabilities will now list
          L3 caches. The code for other levels was added as well, but
          only L3 caches are reported currently.
        </description>
      </change>
      <change>
        <summary>
          POWER9 CPU model was added
        </summary>
        <description>
          It is now properly reported in host capabilities.
        </description>
      </change>
      <change>
        <summary>
          libxl: NUMA sibling distances are now reported in host capabilities
        </summary>
      </change>
      <change>
        <summary>
          VMDK version 3 files are now properly detected
        </summary>
      </change>
      <change>
        <summary>
          Interrupt remapping and Extended interrupt mode for IOMMU devices
        </summary>
        <description>
          These two new features can now be controlled with new
          <code>&lt;driver intremap='on/off' eim='on/off'/&gt;</code>
          tag for <code>iommu</code> devices.
        </description>
      </change>
      <change>
        <summary>
          Graphics in libxl domains now have default addresses
        </summary>
        <description>
          Even though there were default addresses before this change,
          they were not saved in the XML. It is now possible to see
          and control the listen addresses properly.
        </description>
      </change>
      <change>
        <summary>
          Default USB controllers are now added for devices in libxl domains
        </summary>
        <description>
          Even though they were added automatically when USB device
          was attached, they could've been missing in some other
          cases. The logic is now fixed so there are always USB
          controllers, even if there was none of them in the specified
          XML.
        </description>
      </change>
      <change>
        <summary>
          Limits for RPC messages were increased
        </summary>
        <description>
          Hitting the RPC limits we have is easier every day, so they
          were increased once again and some guessing logic was
          improved as well. It is now possible to get more stats than
          ever using the <code>virConnectGetAllDomainStats()</code>
          call and push through even bigger requests and replies for
          all APIs.
        </description>
      </change>
2255 2256
    </section>
    <section title="Bug fixes">
2257 2258 2259 2260 2261 2262 2263 2264 2265
      <change>
        <summary>
          qemu: Create memory_backing_dir on startup
        </summary>
        <description>
          Libvirt's policy is that directories are created on startup if
          they don't exist. We've missed this one.
        </description>
      </change>
2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311
      <change>
        <summary>
          PCIe 4.0 cards now report proper link speeds
        </summary>
        <description>
          It could happen that the link speed for PCIe devices was not
          properly reported or the nodedev-dumpxml just failed. That
          was due to mistake in the field width, but should now work
          properly.
        </description>
      </change>
      <change>
        <summary>
          qemu: Do not report errors on shutdown
        </summary>
        <description>
          For some users, in some rare cases, it could happen that
          there was an error message "internal error: End of file from
          qemu monitor" in the logs even though no problem happened.
          The detection of these false positives was improved and such
          errors should not show any more.
        </description>
      </change>
      <change>
        <summary>
          User-specified UNIX socket paths for virtio channels should not be reset
        </summary>
        <description>
          It could happen, in some cases, that libvirt would mistake a
          user-specified path for its own generated one and thus
          remove it from the XML. The detection of such addresses was
          improved now.
        </description>
      </change>
      <change>
        <summary>
          Fix address reservation during RNG hot-plug
        </summary>
        <description>
          When error occurred in a specific point in time during the
          hot-plug of an RNG device, it could happen that an address
          was released even though another device was already using
          it, making it possible to hot-plug another device with that
          address, effectively having duplicated addresses in the XML.
        </description>
      </change>
2312 2313
    </section>
  </release>
D
Daniel Veillard 已提交
2314
  <release version="v3.3.0" date="2017-05-05">
2315
    <section title="New features">
A
Andrea Bolognani 已提交
2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338
      <change>
        <summary>
          net: Add support for coalesce settings
        </summary>
        <description>
          Enabling data batching through these settings can improve network
          performance for guests.
        </description>
      </change>
      <change>
        <summary>
          qemu: Add support for guest CPU cache specification
        </summary>
        <description>
          This features allows fine-grained control of the cache behavior
          of the guest CPU.
        </description>
      </change>
      <change>
        <summary>
          qemu: Add support for the qemu-xhci USB controller
        </summary>
      </change>
2339 2340
    </section>
    <section title="Improvements">
2341 2342
      <change>
        <summary>
2343
          hyperv: Support Hyper-V 2012 and newer
2344 2345 2346 2347 2348 2349
        </summary>
        <description>
          Starting with Hyper-V 2012 the API has changed causing the existing
          driver to be unable to send and process requests properly. This has
          been resolved by adding abstractions to handle the differences and
          ease handling such breaks if they happen in the future.
2350
        </description>
2351
      </change>
2352 2353
      <change>
        <summary>
2354
          libxl: Add support for nested HVM domains
2355 2356 2357 2358 2359 2360
        </summary>
        <description>
          Xen has supported nested HVM domains since version 4.4. The
          libvirt libxl driver now supports nested HVM domains by
          specifying the host-passthrough CPU mode when defining a
          domain.
2361
        </description>
2362
      </change>
A
Andrea Bolognani 已提交
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      <change>
        <summary>
          qemu: Implement ACPI support for aarch64 guests
        </summary>
        <description>
          Up until this point, ACPI support was only advertised for x86_64
          guests and disabling it for aarch64 guests was not possible at all.
        </description>
      </change>
      <change>
        <summary>
          vz: Add support for changing the number of vCPUs
        </summary>
      </change>
      <change>
        <summary>
          qemu: Automatically choose the best USB controller for guests
        </summary>
        <description>
          The recently introduced qemu-xhci USB controller is the best choice
          for both ppc64 and aarch64 guests, so use it by default on those
          architectures if available.
        </description>
      </change>
      <change>
        <summary>
          daemon: Increase default task limit for libvirtd
        </summary>
        <description>
          The default number of tasks for the pids cgroup controller is 512,
          which libvirtd can quickly bump into when starting lots of guests.
          Raise the limit to a more reasonable 32768.
        </description>
      </change>
      <change>
        <summary>
          docs: Include man pages describing key code names and values
        </summary>
      </change>
      <change>
        <summary>
          virsh: Report initialization errors
        </summary>
        <description>
          Sometimes virsh might be unable to start: when that happens, report
          useful diagnostics instead of failing silently.
        </description>
      </change>
2411 2412
    </section>
    <section title="Bug fixes">
A
Andrea Bolognani 已提交
2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456
      <change>
        <summary>
          nss: Don't require a network restart for libvirt_guest
        </summary>
        <description>
          Previously, the libvirt_guest NSS module would only work properly
          after the corresponding network had been restarted; now newly
          started guests will be reported correctly right away.
        </description>
      </change>
      <change>
        <summary>
          storage: Remove unavailable transient pools after restart
        </summary>
        <description>
          Solve an issue where transient storage pools would be stuck in an
          unmanageable state if the source disappeared and libvirtd was
          subsequently restarted.
        </description>
      </change>
      <change>
        <summary>
          storage: Fix capacity value for LUKS encrypted volumes
        </summary>
        <description>
          The 'capacity' value (e.g. guest logical size) for a LUKS volume is
          smaller than the 'physical' value of the file in the file system, so
          we need to account for that.
        </description>
      </change>
      <change>
        <summary>
          qemu: Fix regression when hyperv/vendor_id feature is used
        </summary>
        <description>
          Guests using the feature would not be started at all; it is now
          possible to start them as expected.
        </description>
      </change>
      <change>
        <summary>
          qemu: Do not crash on USB address with no port and invalid bus
        </summary>
      </change>
2457 2458 2459 2460 2461 2462 2463
      <change>
        <summary>
          crypto: Always pad data before encrypting it
        </summary>
        <description>
          If this step is not performed, when the data length matches the
          chunk size the decryption routines will misinterpret the last byte
A
Andrea Bolognani 已提交
2464
          of data as the padding length and fail to decode it correctly.
2465 2466
        </description>
      </change>
2467 2468
    </section>
  </release>
D
Daniel Veillard 已提交
2469
  <release version="v3.2.0" date="2017-04-02">
2470
    <section title="New features">
2471 2472 2473 2474 2475
      <change>
        <summary>
          The virt-host-validate tool now supports bhyve hypervisor
        </summary>
      </change>
M
Michal Privoznik 已提交
2476 2477 2478 2479 2480 2481 2482 2483
      <change>
        <summary>
          Introduce NVDIMM memory model
        </summary>
        <description>
          NVDIMM is new type of memory introduced into QEMU 2.6. The idea is
          that we have a non-volatile memory module that keeps the data
          persistent across domain reboots and offers much faster data
M
Martin Kletzander 已提交
2484
          accesses. However, due to a bug in QEMU, this feature is not enabled
M
Michal Privoznik 已提交
2485 2486 2487
          for QEMUs older than 2.9.0.
        </description>
      </change>
2488 2489 2490 2491 2492 2493 2494 2495 2496 2497
      <change>
        <summary>
          qemu: Introduce support for generic PCIe Root Ports
        </summary>
        <description>
          For new controllers, a generic device (pcie-root-port) will be used
          by default instead of the Intel-specific device (ioh3420), provided
          the QEMU binary supports it.
        </description>
      </change>
2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509
      <change>
        <summary>
          qemu: Add support for checking guest CPU ABI compatibility
        </summary>
        <description>
          When migrating a domain to a different host, restoring a domain from
          a file or reverting a snapshot libvirt will make sure the guest CPU
          QEMU presents to the guest OS exactly matches the one provided on
          the source host (or before the domain's state was saved). This
          enhanced check may also be requested when starting a new domain to
          ensure the virtual CPU exactly matches the one specified in the XML.
        </description>
J
John Ferlan 已提交
2510 2511
      </change>
      <change>
2512 2513 2514 2515 2516 2517 2518 2519
        <summary>
          qemu: Add support to migrate using TLS
        </summary>
        <description>
          Add the ability to migrate QEMU guests using TLS via a new flag
          VIR_MIGRATE_TLS or virsh migrate '--tls' option. Requires using at
          least QEMU 2.9.0 in order to work properly.
        </description>
2520
      </change>
2521 2522 2523 2524 2525 2526 2527 2528 2529 2530
      <change>
        <summary>
          qemu: add mediated devices framework support
        </summary>
        <description>
          Recent kernel version introduced new mediated device framework, so
          provide an initial support of this framework for libvirt, mainly by
          introducing a new host device type in the XML.
        </description>
      </change>
J
Jiri Denemark 已提交
2531
      <change>
2532 2533 2534 2535 2536 2537 2538
        <summary>
          qemu: Add support for setting TSC frequency
        </summary>
        <description>
          Setting TSC frequency is required to enable migration for domains
          with 'invtsc' CPU feature turned on.
        </description>
J
Jiri Denemark 已提交
2539
      </change>
P
Peter Krempa 已提交
2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553
      <change>
        <summary>
          Add support for block device threshold event
        </summary>
        <description>
          When using thin provisioning, management tools need to resize the
          disk in certain cases. To avoid having them to poll disk usage
          this version introduces an event which will be fired when a given
          offset of the storage is written by the hypervisor. Together with the
          API it allows registering thresholds for given storage backing
          volumes and this event will then notify management if the threshold
          is exceeded. Currently only the qemu driver supports this.
        </description>
      </change>
2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566
      <change>
        <summary>
           bhyve: Add support for UEFI boot ROM, VNC, and USB tablet
        </summary>
        <description>
          The bhyve driver now supports booting using the UEFI boot ROM,
          so non-FreeBSD guests that support UEFI could be booted without
          using an external boot loader like grub-bhyve. Video is also
          supported now, allowing to connect to guests via VNC and use
          an USB tablet as an input device. Please refer to
          the driver page for domain XML examples.
        </description>
      </change>
2567 2568
    </section>
    <section title="Improvements">
2569 2570 2571 2572 2573 2574
      <change>
        <summary>
          qemu: Detect host CPU model by asking QEMU on x86_64
        </summary>
        <description>
          Previously, libvirt detected the host CPU model using CPUID
J
Jiri Denemark 已提交
2575
          instruction, which caused libvirt to detect a lot of CPU features
2576 2577 2578 2579
          that are not supported by QEMU/KVM. Asking QEMU makes sure we
          don't start it with unsupported features.
        </description>
      </change>
2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590
      <change>
        <summary>
          perf: Add more perf statistics
        </summary>
        <description>
          Add support to get the count of cpu clock time, task clock time,
          page faults, context switches, cpu migrations, minor page faults,
          major page faults, alignment faults, emulation faults by
          applications running on the platform.
        </description>
      </change>
P
Peter Krempa 已提交
2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601
      <change>
        <summary>
          Write hyperv crash information into vm log
        </summary>
        <description>
          qemu's implementation of the hyperv panic notifier now reports
          information about the crash from the guest os. Starting with this
          version, libvirt logs the information to the vm log file for possible
          debugging.
        </description>
      </change>
2602 2603
    </section>
    <section title="Bug fixes">
2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616
      <change>
        <summary>
          QEMU: Use adaptive timeout for connecting to monitor
        </summary>
        <description>
          When starting qemu, libvirt waits for qemu to create the monitor
          socket which libvirt connects to. Historically, there was sharp 30
          second timeout after which the qemu process was killed. This
          approach is suboptimal as in some scenarios with huge amounts of
          guest RAM it can take a minute or more for kernel to allocate and
          zero out pages for qemu. The timeout is now flexible and computed by
          libvirt at domain startup.
        </description>
2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627
      </change>
      <change>
        <summary>
          Overwrite (clear) 2 KB instead of just 512 bytes when initializing logical device
        </summary>
      </change>
      <change>
        <summary>
          Describe the logical backend requirements better for pool-create-as
        </summary>
      </change>
2628 2629
    </section>
  </release>
D
Daniel Veillard 已提交
2630
  <release version="v3.1.0" date="2017-03-03">
2631
    <section title="New features">
2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642
      <change>
        <summary>
          storage: Add Virtuozzo storage backend storage pool
        </summary>
        <description>
          Add new storage backend to support pool and volume management
          within the Virtuozzo Storage environment. Virtuozzo Storage is
          a highly available distributed software defined storage with
          built-in replication and disaster recovery.
        </description>
      </change>
2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654
      <change>
        <summary>
          qemu: Add support for memory backing with file source
        </summary>
        <description>
          Add support in numa topology for file source inside memory backing
          (hugepages are not needed) Three new elements
          &lt;source/&gt;,&lt;access/&gt; and &lt;allocation/&gt; were added
          to &lt;memoryBacking/&gt; element. Also new configuration parameter
          <code>memory_backing_dir</code> was added to qemu.conf.
        </description>
      </change>
2655 2656 2657 2658 2659 2660 2661 2662 2663
      <change>
        <summary>
          network: make openvswitch call timeout configurable
        </summary>
        <description>
          Adding the ability to specify the timeout value in seconds for
          openvswitch calls in the libvirtd configuration file.
        </description>
      </change>
2664 2665 2666 2667 2668 2669 2670 2671 2672
      <change>
        <summary>
          bhyve: add e1000 NIC support
        </summary>
        <description>
          Add support for e1000 NIC. Previously, the only available option
          was <code>virtio-net</code>.
        </description>
      </change>
2673 2674
      <change>
        <summary>
J
Jim Fehlig 已提交
2675
          libxl: add tunneled migration support
2676 2677
        </summary>
        <description>
J
Jim Fehlig 已提交
2678
          Add tunneled migration to libxl driver, which is always capable of
2679 2680 2681 2682
          strong encryption and doesn't require any extra network connection
          other than what's required for remote access of libvirtd.
        </description>
      </change>
2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699
      <change>
        <summary>
          qemu: add rendernode argument
        </summary>
        <description>
          Add a new attribute 'rendernode' to &lt;gl&gt; spice element.
        </description>
      </change>
      <change>
        <summary>
          nodedev: add drm capability
        </summary>
        <description>
          Add a new 'drm' capability for Direct Rendering Manager (DRM)
          devices, providing device type information.
        </description>
      </change>
2700 2701 2702 2703 2704 2705 2706 2707 2708 2709
      <change>
        <summary>
          Add API for individual/specific vCPU hotplug
        </summary>
        <description>
          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.
        </description>
      </change>
2710 2711
    </section>
    <section title="Improvements">
2712 2713 2714 2715 2716 2717 2718 2719 2720
      <change>
        <summary>
           virsh: pool-list: allow both --uuid and --name in one command
        </summary>
        <description>
          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.
        </description>
      </change>
2721 2722
      <change>
        <summary>
2723
          Introduce MTU to domain &lt;interface/&gt; and &lt;network&gt;
2724 2725
        </summary>
        <description>
2726 2727
          Allow setting MTU size for some types of domain interface
          and network.
2728 2729
        </description>
      </change>
2730 2731 2732 2733 2734 2735 2736 2737 2738 2739
      <change>
        <summary>
          libxl: improve support for &lt;timer&gt; configurations
        </summary>
        <description>
          Add support for multiple timers. Extend the tsc timer to
          support the emulate mode. Improve conversion of timer XML
          to/from xl.cfg.
        </description>
      </change>
2740 2741 2742 2743 2744 2745 2746 2747 2748 2749
      <change>
        <summary>
          storage: modularize the storage driver
        </summary>
        <description>
          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.
        </description>
      </change>
2750 2751
    </section>
    <section title="Bug fixes">
2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763
      <change>
        <summary>
          nodedev: Fabric name must not be required for fc_host capability
        </summary>
        <description>
          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.
        </description>
      </change>
2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782
      <change>
        <summary>
          bhyve: change address allocation schema for SATA disks
        </summary>
        <description>
          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 &lt;address type='pci'&gt; from the &lt;disk&gt;
          elements with &lt;target bus='sata'/&gt; and let libvirt
          regenerate it properly.
        </description>
      </change>
2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801
      <change>
        <summary>
          libxl: maximum memory fixes
        </summary>
        <description>
          Fix reporting of domain maximum memory. Fix setting dom0
          maximum memory.
        </description>
      </change>
      <change>
        <summary>
          libxl: fix disk detach when &lt;driver&gt; not specified
        </summary>
      </change>
      <change>
        <summary>
          libxl: fix dom0 autoballooning with Xen 4.8
        </summary>
      </change>
2802 2803 2804 2805 2806 2807 2808 2809 2810 2811
      <change>
        <summary>
          qemu: Allow empty script path to &lt;interface/&gt;
        </summary>
        <description>
          Historically, this was always allowed. Unfortunately, due to some
          rework done for 1.3.2 release a bug was dragged in which suddenly
          stop allowing domain with such configuration to start.
        </description>
      </change>
2812 2813
    </section>
  </release>
D
Daniel Veillard 已提交
2814
  <release version="v3.0.0" date="2017-01-17">
2815
    <section title="New features">
2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834
      <change>
        <summary>
          Domain events for metadata content changes
        </summary>
        <description>
          The domain events framework has a new event ID that can
          be used to get notifications when domain metadata content
          changes.
        </description>
      </change>
      <change>
        <summary>
          Event notifications for the secret object
        </summary>
        <description>
          The secret object now supports event notifications, covering
          lifcycle changes and secret value changes.
        </description>
      </change>
2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846
      <change>
        <summary>
          New localPtr attribute for "ip" element in network XML
        </summary>
      </change>
      <change>
        <summary>
          qemu: Support QEMU group I/O throttling
        </summary>
        <description>
          Add the capability to allow group I/O throttling via a new
          domain &lt;disk&gt; &lt;iotune&gt; subelement "group_name"
2847
          to allow sharing I/O throttling quota between multiple drives.
2848 2849 2850 2851
        </description>
      </change>
      <change>
        <summary>
2852
          nss: Introduce libvirt_guest
2853 2854
        </summary>
        <description>
2855
          New <code>libvirt_guest</code> nss module that translates libvirt
2856
          guest names into IP addresses.
2857 2858 2859 2860 2861 2862 2863 2864 2865
        </description>
      </change>
      <change>
        <summary>
          daemon: Add support for runtime logging settings adjustment
        </summary>
        <description>
          Logging-related settings like log outputs and filters can now be
          adjusted during runtime using the admin interface without the
2866
          necessity of the daemon's restart.
2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877
        </description>
      </change>
      <change>
        <summary>
          storage: Add virStorageVolInfoFlags API
        </summary>
        <description>
          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
2878
          added to the virsh vol-info command to access the data.
2879 2880 2881 2882 2883 2884 2885
        </description>
      </change>
      <change>
        <summary>
          libxl: Implement virDomainGetMaxVcpus API
        </summary>
      </change>
2886 2887 2888 2889 2890 2891 2892 2893 2894 2895
      <change>
        <summary>
          storage: Add overwrite flag checking for logical pool
        </summary>
        <description>
          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).
        </description>
      </change>
2896 2897 2898 2899 2900
      <change>
        <summary>
          qemu: Add support for guest CPU configuration on s390(x)
        </summary>
      </change>
2901 2902 2903 2904 2905 2906 2907 2908 2909 2910
    </section>
    <section title="Improvements">
      <change>
        <summary>
          perf: Add more perf statistics
        </summary>
        <description>
          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
2911
          cycles by applications running on the platform.
2912 2913 2914 2915 2916 2917 2918 2919
        </description>
      </change>
      <change>
        <summary>
          conf: Display &lt;physical&gt; for volume xml
        </summary>
        <description>
          Add a display of the &lt;physical&gt; size of a disk
2920
          volume in the output of the volume XML.
2921 2922 2923 2924 2925 2926 2927 2928 2929 2930
        </description>
      </change>
      <change>
        <summary>
          qemu: Use virtio-pci by default for aarch64 mach-virt guests
        </summary>
        <description>
          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,
2931
          newly-defined guests will now use it automatically.
2932 2933
        </description>
      </change>
2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946
      <change>
        <summary>
          vbox: remove support for VirtualBox 3.x and older
        </summary>
        <description>
          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.
        </description>
      </change>
2947 2948 2949 2950 2951 2952 2953 2954 2955
      <change>
        <summary>
          virsh: pool-info: introduce option --bytes
        </summary>
        <description>
          Add option --bytes to virsh pool-info in order ti allow display
          of units in bytes rather than default of human readable output.
        </description>
      </change>
2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967
      <change>
        <summary>
          scsi: Add parent wwnn/wwpn or fabric capability for createVport
        </summary>
        <description>
          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.
        </description>
      </change>
2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981
      <change>
        <summary>
          qemu: aggregate pcie-root-ports onto multiple functions of a slot
        </summary>
        <description>
          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.
        </description>
      </change>
2982 2983
    </section>
    <section title="Bug fixes">
2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994
      <change>
        <summary>
          lxc: fix accidental killing of containers during libvirtd restart
        </summary>
        <description>
          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.
        </description>
      </change>
2995 2996 2997 2998 2999 3000 3001 3002
      <change>
        <summary>
          qemu: Correct GetBlockInfo values
        </summary>
        <description>
          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
3003
          the domain.
3004 3005 3006 3007 3008 3009 3010 3011
        </description>
      </change>
      <change>
        <summary>
          qemu: Make virtio console usable on ppc64 guests
        </summary>
        <description>
          The chardev detection code has been improved and can now handle this
3012
          configuration properly.
3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024
        </description>
      </change>
      <change>
        <summary>
          qemu: Enable mount namespace
        </summary>
        <description>
          To avoid funny races with udev relabelling devices under our hands and
          to enhance security, libvirt now spawns each qemu process with its own
          <code>/dev</code>.
        </description>
      </change>
3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036
      <change>
        <summary>
          storage: Fix implementation of no-overwrite for file system backend
        </summary>
        <description>
          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.
        </description>
      </change>
M
Michal Privoznik 已提交
3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047
      <change>
        <summary>
          qemu: Create hugepage path on per domain basis
        </summary>
        <description>
          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.
        </description>
      </change>
3048 3049 3050 3051 3052 3053 3054 3055 3056
      <change>
        <summary>
          conf: Reject domains with duplicate drive addresses
        </summary>
        <description>
          Reject duplicate drive addresses for disks and hostdevs at
          domain definition.
        </description>
      </change>
3057 3058 3059 3060 3061 3062 3063 3064 3065 3066
      <change>
        <summary>
          libxl: reverse defaults on HVM net device attach
        </summary>
        <description>
          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.
        </description>
      </change>
3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077
      <change>
        <summary>
          libxl: always enable pae for x86_64 HVM
        </summary>
        <description>
          By default pae is disabled in libxl. Without an explicit &lt;pae/&gt;
          setting in the domain &lt;features&gt; configuration, an x86_64 HVM
          domain would be get an i686 environment. pae should always be enabled
          for x86_64 HVM domains.
        </description>
      </change>
3078 3079 3080 3081 3082 3083 3084 3085 3086
      <change>
        <summary>
          qemu: Fix XML dump of autogenerated websocket
        </summary>
        <description>
          As a result autogenerated websocket port is regenerated on domain restore,
          migration and such as it should be.
        </description>
      </change>
3087 3088 3089 3090 3091 3092 3093 3094 3095 3096
    </section>
  </release>
  <release version="v2.5.0" date="2016-12-04">
    <section title="New features">
      <change>
        <summary>
          shmem: Add support for additional models
        </summary>
        <description>
          The shmem device can now utilize QEMU's ivshmem-plain and
3097
          ivshmem-doorbell, more modern versions of ivshmem.
3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111
        </description>
      </change>
      <change>
        <summary>
          vbox: Add VirtualBox 5.1 support
        </summary>
      </change>
      <change>
        <summary>
          libssh: New transport
        </summary>
        <description>
          The new libssh transport allows one to connect to a running
          libvirtd via SSH, using the libssh library; for example:
3112
          <code>qemu+libssh://server/system</code>.
3113 3114 3115 3116 3117 3118 3119 3120
        </description>
      </change>
      <change>
        <summary>
          vhost-scsi: Add support scsi_host hostdev passthrough
        </summary>
        <description>
          Add the capability to pass through a scsi_host HBA and the
3121
          associated LUNs to the guest.
3122 3123 3124 3125
        </description>
      </change>
      <change>
        <summary>
3126
          Allow debugging of gluster volumes in qemu
3127
        </summary>
3128 3129 3130 3131
        <description>
          Users can now enable debug logging for native gluster
          volumes in qemu using the "gluster_debug_level" option in qemu.conf
        </description>
3132 3133 3134
      </change>
      <change>
        <summary>
3135
          Pre-allocate memory slots for memory hotplug
3136
        </summary>
3137 3138 3139 3140 3141
        <description>
          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
        </description>
3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153
      </change>
      <change>
        <summary>
          qemu: Express devices will be placed on PCIe bus by default
        </summary>
        <description>
          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
3154
          added as needed.
3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170
        </description>
      </change>
    </section>
    <section title="Improvements">
      <change>
        <summary>
          docs: Better documentation for migration APIs and flags
        </summary>
      </change>
      <change>
        <summary>
          vbox: Address thread safety issues
        </summary>
      </change>
      <change>
        <summary>
3171
          virsh: Add support for passing an alternative persistent XML to migrate command
3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184
        </summary>
      </change>
      <change>
        <summary>
          vhostuser: Allow hotplug of multiqueue devices
        </summary>
      </change>
      <change>
        <summary>
          NEWS: Switch to an improved format
        </summary>
        <description>
          List user-visible changes instead of single commits for a better
3185
          high-level overview of differences between libvirt releases.
3186 3187 3188 3189 3190 3191 3192 3193 3194
        </description>
      </change>
      <change>
        <summary>
          website: Modernize layout and branding
        </summary>
        <description>
          The libvirt website looked very cluttered and outdated; it has now
          been completely overhauled, resulting in a design that's better
3195
          organized and more pleasant to look at.
3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217
        </description>
      </change>
    </section>
    <section title="Bug fixes">
      <change>
        <summary>
          vz: Fix migration in P2P mode
        </summary>
      </change>
      <change>
        <summary>
          Forbid newline character in names of some libvirt objects
        </summary>
      </change>
      <change>
        <summary>
          Fix compilation on macOS
        </summary>
      </change>
    </section>
  </release>
</libvirt>