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virt-v2v-release-notes-2.4 - Man Page

virt-v2v release notes for 2.4


These are the release notes for virt-v2v 2.4. This describes the major changes since 2.2.

Virt-v2v 2.4.0 was released on 5 January 2024.

New features

New --block-driver option which can be used to choose to install either virtio-blk or virtio-scsi drivers (Andrey Drobyshev).

The virt-v2v --key option now recognizes LVM names like /dev/mapper/rhel_bootp--73--75--123-root (Laszlo Ersek).

The --key option also supports a new --key all:... selector to try the same key on all devices.

Feature removed

Support for RHEL 3 conversions has been removed.

Other fixes

Conversions now set the host-model CPU in the output metadata, except where the source hypervisor overrides this.  The exception is -o qemu mode which uses -cpu host.  (Thanks Ming Xie, Laszlo Ersek, Dr. David Alan Gilbert, Daniel Berrangé)

virt-v2v will now look for bootloader configuration in /boot/grub/grub.cfg for UEFI guests (Andrey Drobyshev).

Invoke pnputil (if available) to install drivers, fixing some Windows conversions (Andrey Drobyshev).

Skip SELinux relabelling if the guest has disabled SELinux (Roman Kagan).

Several output modes now generate metadata to indicate whether the guest requires the RTC to be set to UTC (Linux) or localtime (most Windows).  For example with -o libvirt this generates <clock offset="utc|localtime"/>.  (Thanks Lee Garrett, Laszlo Ersek)

-i ova mode is now less strict about parsing the manifest file, which helps when converting some non-conforming OVA files.

Input modes using -it ssh now use the correct quoting (thanks Bill Sanders, Laszlo Ersek).

-i vmx mode now rejects VMDK files explicitly, reducing a source of user confusion (thanks Ming Xie).

Multiple fixes to -o kubevirt mode.  Also implement -oo compressed for this mode.  (Thanks Xiaodai Wang, Ming Xie)

-o libvirt mode now supports Rocky Linux (thanks Ming Xie).

-o openstack documentation for cloud configurations fixed (thanks Ming Xie).

-o rhv-upload mode has an improved error when the -os parameter is invalid or missing (thanks Junqin Zhou).

Build changes

Support for OCaml 5, and OCaml ≥ 4.07 is now the minimum (thanks Guillaume Munch-Maccagnoni, Jerry James, Josh Berdine, Jürgen Hötzel, Vincent Laviron).

Fix several tests so they can handle the case where the operating system does not support btrfs or NTFS, instead of failing (Laszlo Ersek).

Fix compatibility issues with libxml2 2.12.


Fix an off-by-one error which caused very rare crashes in virt-v2v.

Bugs fixed


improve UX when running as root and we can't chown v2v tmpdir or socks


virt-v2v failed to inspect RHEL9.2 guest due to kernel-core / kernel-modules-core subpackage split


Modify virt-v2v-output-openstack man page to add cloud.yaml related information


RFE: Virt-v2v should recognize partition names like '/dev/mapper/rhel boot--73--75--123-root' in related keys option


win11/2022 failed to start into OS after converting to local libvirt via virt-v2v on AMD EPYC-Milan CPU model host


kernel panic when booting into OS with rocky9 guest converted by v2v to local libvirt


There is virt-v2v: warning: unknown guest operating system: linux rocky 9.1 x86_64 when convert rocky guests to local libvirt


Enable '--oo compressed' for -o kubevirt


-o kubevirt mode must rename guest to comply with KubeVirt requirements: metadata.name: Invalid value: "esx8.0-rhel8.8-x86_64": a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an a


Improve error message when converting to rhv using the wrong data domain name which has a specific character

See Also



Authors of virt-v2v 2.4:

Andrey Drobyshev

Emilio Herrera



Jan Kuparinen

Jürgen Hötzel

Laszlo Ersek

Pavel Borecki

Piotr Drąg

Richard W.M. Jones

Roman Kagan

Temuri Doghonadze

Yuri Chornoivan


This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.


To get a list of bugs against libguestfs, use this link: https://bugzilla.redhat.com/buglist.cgi?component=libguestfs&product=Virtualization+Tools

To report a new bug against libguestfs, use this link: https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Virtualization+Tools

When reporting a bug, please supply:

Referenced By


2024-07-11 virt-v2v-2.5.5 Virtualization Support