Release of libvirt-6.3.0

It's out, tagged in git and the signed sources tarball and rpm are available from the usual place: https://libvirt.org/sources/ I have also pushed the python bindings 6.3.0 release at their usual place https://libvirt.org/sources/python/ Among the things to note is the revamp of the vbox support, deprecating old 5.x versions but adding new 6.x API to control the hypervisor. New features: - qemu: support disabling hotplug/unplug of PCIe devices libvirt can now set the "hotplug" option for pcie-root-ports and pcie-switch-downstream-ports, which can be used to disable hotplug/unplug of devices from these ports (default behavior is for these controllers to accept all hotplug/unplug attempts, but this is often undesireable). - vbox: added support for version 6.0 and 6.1 APIs libvirt can now support use of the VirtualBox 6.0 and 6.1 APIs. This is compile tested only, so we are looking for feedback from users on how well it works in practice. - xen: Add support for 'e820_host' hypervisor feature e820_host is a Xen-specific option only available for PV guests. When enabled it provides the guest with a virtual e820 memory map based on the host one. It must be enabled to allow hotplugging PCI devices to PV guests, particularly when memory ballooning is enabled. - xen: Add support for 'passthrough' hypervisor feature passthrough is a Xen-specific option new to Xen 4.13 that enables PCI passthrough for guests. It must be enabled to allow hotplugging PCI devices. - qemu: support async IO mode 'io_uring' Linux 5.1 introduces a fast and efficient async IO interface io_uring, then qemu implements that in version 5.0. It could be used in file, host device and host cdrom backend by io='io_uring' of disk XML. - Lease time option included for network DHCP settings Users can now configure expiry time for leases for networks where libvirt manages DHCP. The time can be specified for whole range and/or fine tuned per individual host. - qemu: Implement pSeries Spectre mitigation features Users can now setup the following capabilities of pSeries guests: CFPC (Cache Flush on Privilege Change), SBBC (Speculation Barrier Bounds Checking) and IBS (Indirect Branch Speculation). Improvements: - qemu: Allow checkpoint redefine for offline VMs Skip the liveness and capability checks when redefining checkpoints as we don't need QEMU interactions to update the metadata. - daemons: Improve timeout handling Daemons now support --timeout 0 which suppresses daemon killing after given time of inactivity. - qemu: Add support for 'multidevs' option This option prevents misbehaviours on guest if a QEMU 9pfs export contains multiple devices, due to the potential file ID collisions this otherwise may cause. Bug fixes: - qemu: Various embed driver fixes When using shared resources from embed driver (e.g. hugepages, machined, etc.) libvirt now generates an unique handler that is not conflicting with other embed drivers or system or session daemons. - cpu: Distinguish Cascadelake-Server from Skylake-Server Libvirt now properly detects Cascadelake-Server and Skylake-Server processors which differ only in stepping. - qemu: Fix domain restore from a block device When using namespaces, libvirt was unable to restore a domain from a block device because libvirt tried to relabel the device inside the namespace while QEMU was given FD to the block device in the host. - node_device_udev: Handle move events Libvirt now handles move event which is emitted on a NIC rename. - qemu: Fix capabilities probing with TCG Libvirt no long assumes TCG is always available. It now detects whether QEMU supports TCG and reports it accordingly. Removed features: - vbox: removed support for version 5.0 and 5.1 APIs libvirt no longer supports use of VirtualBox 5.0 and 5.1 since these versions reached their end of life on 2017/05 and 2018/04 respectively. Thanks everybody for your help with this release, stay safe, enjoy ! Daniel -- Daniel Veillard | Red Hat Developers Tools http://developer.redhat.com/ veillard(a)redhat.com | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ http://veillard.com/ | virtualization library http://libvirt.org/