Release of libvirt-6.8.0

The 6.8.0 release of both libvirt and libvirt-python is tagged and signed tarballs and source RPMs are available at https://libvirt.org/sources/ https://libvirt.org/sources/python/ Thanks everybody who helped with this release by sending patches, reviewing, testing, or providing any other feedback. Your work is greatly appreciated. * New features * xen: Add ``writeFiltering`` attribute for PCI devices By default Xen filters guest writes to the PCI configuration space of a PCI hostdev, which may cause problems for some devices. The ``writeFiltering`` attribute of the device's ``<source>`` element can be used to disable the filtering and allow all guest writes to the configuration space. * bhyve: Support setting the framebuffer resolution Libvirt can now set the framebuffer's "w" and "h" parameters using the ``resolution`` element. * bhyve: Support VNC password authentication Libvirt can now probe whether the bhyve binary supports VNC password authentication. In case it does, a VNC password can now be passed using the ``passwd`` attribute on the ``<graphics>`` element. * remote: ``virt-ssh-helper`` replaces ``nc`` for SSH tunnelling Libvirt now provides a ``virt-ssh-helper`` binary on the server side. The libvirt remote client will use this binary for setting up an SSH tunnelled connection to hosts. If not present, it will transparently fallback to the traditional ``nc`` tunnel. The new binary makes it possible for libvirt to transparently connect across hosts even if libvirt is built with a different installation prefix on the client vs server. It also enables remote access to the unprivileged per-user libvirt daemons (e.g. using a URI such as ``qemu+ssh://hostname/session``). The only requirement is that ``virt-ssh-helper`` is present in ``$PATH`` of the remote host. * esx: implement few APIs The ``virConnectListAllNetworks()``, ``virDomainGetHostname()``, and ``virDomainInterfaceAddresses()`` (only for ``VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_AGENT`` source) APIs were implemented in the esx driver. * Improvements * qemu: Allow migration over UNIX sockets QEMU migration can now be performed completely over UNIX sockets. This is useful for containerised scenarios and can be used in both peer2peer and direct migrations. * dbus: Use GLib implementation instead of libdbus Adopting GLib DBus implementation simplifies our code as libdbus provides low-level APIs where we had to have a lot of helper functions. With this change we also remove dependency on libdbus and possibly fix all the DBus related libvirtd crashes seen over the time. * Re-introduce NVDIMM auto-alignment for pSeries Guests The auto-alignment logic was removed in v6.7.0 in favor of requiring the size provided by the user to be already aligned; however, this had the unintended consequence of breaking some existing guests. v6.8.0 restores the previous behavior with an improvement: it also reflects the auto-aligned value in the domain XML. * qemu: Preserve qcow2 cluster size after external snapshots The new overlay image which is installed on top of the current chain when taking an external snapshot now preserves the cluser size of the original top image to preserve any performance tuning done on the original image. * Bug fixes * qemu: Various (i)SCSI backed hostdev fixes (i)SCSI backed hostdevs now work again with an arbitrarily long user-specified device alias and also honor the 'readonly' property after a recent rewrite. * Removed features * node_device: Remove HAL node device backend HAL is deprecated on all supported OS so there is no need to keep it in libvirt. udev backend is used on Linux OSes and devd can be eventually implemented as replacement for FreeBSD. Enjoy. Jirka