guestfs-release-notes - libguestfs Release Notes
These are the release notes for libguestfs stable release 1.56. This describes the major changes since 1.54.
Libguestfs 1.56.0 was released on XXX XXX 2025.
Add support for Windows 2025 (thanks Ming Xie).
Add support for TencentOS (Denise Cheng).
Inspection of Ubuntu 22+ guests that use a split /usr configuration now works properly (thanks Jaroslav Spanko, Daniel Berrange).
Inspecting guests that have duplicated root mountpoints now works.
New command_out and sh_out APIs which allow you to capture output from guest commands that generate more output than the protocol limit allows.
New btrfs_scrub_full API which runs a full Btrfs scrub, synchronously. It works more like fsck for other filesystems.
The fstrim API has been modified to work around several issues in upstream and RHEL 9 kernels related to XFS support (Eric Sandeen, Dave Chinner).
The existing e2fsck API has a new FORCENO option enabling use of the command line -n flag.
Previously -L../lib/.libs got embedded in the distributed OCaml bindings. This has been fixed.
json-c is now required. This replaces Jansson which was previously used for parsing JSON input files.
OCaml ≥ 4.08 is now required.
OCaml oUnit is no longer used.
We now assume that __attribute__((cleanup)) always works. This requires gcc or Clang.
Fix compatibility with file(1) ≥ 5.46.
Fix compatibility with Fedora ≥ 42 which merges /usr/sbin into /usr/bin.
Fix compatibility with latest Rust compiler (Jacob Reger).
lex(1), yacc(1) and libmagic (part of file(1)) have not been required by libguestfs for a long time, but were still checked by the ./configure script. This has been fixed, they are no longer build dependencies (thanks Mohamed Akram).
When using ./configure --disable-daemon we no longer require augeas and hivex (thanks Mohamed Akram).
zfs-fuse support has been dropped. The project is unmaintained upstream.
The tests were modified to use a set of common functions and remove use of the weird $TEST_FUNCTIONS macro, similar to how we do it in nbdkit.
Fix dhcpcd failing on systemd-resolved stub (Thomas Wouters).
Add support for dhcpcd and sfdisk on Debian (Daniel Gomez).
Print the kernel utsname in debug output.
The legacy pvs_full, vgs_full and lvs_full APIs were completely rewritten in OCaml.
Some deprecated autoconf macros are no longer used.
We no longer emit a false warning about BLKDISCARD when creating a block device.
Some internal OCaml List and String functions that we used have been replaced by ones from the OCaml stdlib, reducing code maintenance.
[rhel 9.6] windows version of win2025 guest shows incorrect during v2v conversion
Add new APIs to allow command output > 4MB
The Ubuntu 22.04 VM from VMware fails with Inspection field ‘i_arch’ was ‘unknown’ [rhel-9.7]
fstrim on a RHEL 7.2-created XFS filesystem does not trim as much as expected
Run fstrim twice to work around incorrect fstrim behaviour in RHEL 9 kernel
virt-v2v fails with mount exited with status 32: mount: /sysroot: /dev/sda2 already mounted on /sysroot. [rhel-9.7]
1.54.0: gdisk/test-expand-gpt.pl fails
New test suite failure in c-api with file-5.46
Weblate | erroneous source strings
sed: RE error: illegal byte sequence in build
bash-completion fails to install on macOS
augeas, hivex and libmagic required even when daemon is disabled
Failing to build ocaml/examples
guestfs-examples(1), guestfs-faq(1), guestfs-performance(1), guestfs-recipes(1), guestfs-testing(1), guestfs(3), guestfish(1), http://libguestfs.org/
Copyright (C) 2009-2025 Red Hat Inc.
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:
The version of libguestfs.
Where you got libguestfs (eg. which Linux distro, compiled from source, etc)
Describe the bug accurately and give a way to reproduce it.
Run libguestfs-test-tool(1) and paste the complete, unedited output into the bug report.