Libvirt release notes (virsh)

https://libvirt.org/news.html ~ monthly releases

2020

• v6.4.0 (2020-06-02)
  • virsh capabilities will now include information about the host CPU when run on ARM machines

• v6.3.0 (2020-05-05)
  • Lease time option included for network DHCP settings

• v6.2.0 (2020-04-02)
  • admin: Support reloading TLS certificates without restarting libvirt by using virt-adminserver-update-tls

• v6.1.0 (2020-03-03)
  • qemu: Support "dies" in CPU topology to complement "socket" and "core"

• v6.0.0 (2020-01-15) (Included in Ubuntu 20.04 LTS)
  • Support reporting memory bandwidth usage stats: virsh domstats --memory

2019

• v5.10.0 (2019-12-02)
  • support for ARM CPU features. SVE vector lengths, which were introduced in QEMU 4.2.0.

• v5.9.0 2019-11-05

• v5.8.0 (2019-10-05)
  • qemu: Support use of precreated tap/macvtap devices by unprivileged libvirtd

• v5.7.0 2019-09-03
  • virsh guestinfo

• v5.6.0 2019-08-05

qemu: Allow XML validation for snapshot creation

Add flag VIR_DOMAIN_SNAPSHOT_CREATE_VALIDATE to validate snapshot input XML. For virsh, users can use it as virsh snapshot-create --validate. (See also virsh snapshot-create-as)

• v5.5.0 (2019-07-02)
  • virt-xml-validate: Allow input to be read from stdin
  • Security: api: Prevent access to several APIs over read-only connections

Certain APIs give root-equivalent access to the host, and as such should be limited to privileged users. CVE-2019-10161, CVE-2019-10166, CVE-2019-10167, CVE-2019-10168.

• v5.4.0 (2019-06-03)
  • Security: Restrict user access to virt-admin, virtlogd and virtlockd, The intended users for these facilities are the root user and the libvirtd service respectively, but these restrictions were not enforced correctly. CVE-2019-10132.

• v5.3.0 (2019-05-04)

• v5.1.0 2019-03-04

External snapshot metadata redefinition is fixed

Attempting to use VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE to reinstate the metadata describing an external snapshot :created earlier for an offline domain no longer fails.

• v5.0.0 2019-01-15

2018

• v4.9.0 2018-11-04

util: Add cgroup v2 support

• v4.8.0 2018-10-01

• v4.4.0 2018-06-04

qemu: Add support for migration of VMs with non-shared storage over TLS

Introduce SCSI persistent reservations support

• v4.2.0 2018-04-01

qemu: use arp table of host to get the IP address of guests

• v4.1.0 2018-03-05

qemu: unlink memory backing file on domain shutdown

Depending on the filesystem where domain memory is stored, some files might have been left behind. This is not a :problem on hugetlbfs, but it is a problem on regular filesystems like ext4.

qemu: If multiple domains were being shut down in parallel, libvirtd might have deadlocked.

• v4.0.0 2018-01-19

• v3.1.0 2017-03-03

storage: Add Virtuozzo storage backend storage pool

• v2.5.0 2016-12-04

The new libssh transport allows to connect to a running libvirtd via SSH, using the libssh library; for example: qemu+libssh://server/system

See also

• libvirtd: systemctl status libvirtd, systemctl status libvirt-guests, Libvirt release notes, logs, libvirtd.conf, /etc/libvirt/, /var/log/libvirt/
• KVM, Installation, QEMU, virsh, virtinst, libguestfs-tools, libvirt, qemu, Red Hat Virtualization (RHV), MacVTap, Virtio, oVirt, KVM services, KVM networking, KVM graphics, CPU, KVM on ARM
• Software changelogs, git log, GA, EoL, EOS, release cycle, apt changelog, docker-compose changelog

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