Ubuntu Manpage: guestfs-release-notes - libguestfs Release Notes

Provided by: libguestfs0_1.50.1-4ubuntu1_amd64

NAME

       guestfs-release-notes - libguestfs Release Notes

RELEASE NOTES FOR LIBGUESTFS 1.48

These are the release notes for libguestfs stable release 1.48. This describes the major
changes since 1.46.

Libguestfs 1.48.0 was released on 14 March 2022.

Some features removed
The following little used, experimental or unsafe features have been removed:

"Libguestfs live" was an experimental feature that allowed you (in theory) to connect to
an existing instance of the libguestfs daemon in a running guest. If you want to do this
we recommend installing qemu-guest-agent in the guest instead and using the APIs provided
by it. The related "unix:" backend has been removed. The guestfish(1) and guestmount(1)
--live option now prints an error.

The User-mode Linux ("uml") backend has been removed. It was an alternate hypervisor that
could be used instead of qemu. It had many limitations including lack of network support,
and lack of qemu native features like qcow2 or network-backed disks. In addition it was
slower than KVM and particular features like bulk upload/download were painfully slow.
Also the UML feature of Linux that it was based on often does not work.

The 9pfs APIs "guestfs_list_9p" and "guestfs_mount_9p" have been deprecated and now return
errors. This was related to an experimental feature for passing through host filesystems
to the appliance. You had to hand-hack the qemu command line for this to work and it did
not fit the libguestfs model very well.

"guestfs_add_drive" no longer supports hotplugging (adding a drive after launch), and
"guestfs_remove_drive" has been deprecated and now returns an error. Hotplugging was an
unsuccessful feature which was complicated to implement and maintain, and was slow and
insecure. It also only worked with the non-default libvirt backend, and was never
implemented in the default "direct" backend.

Language bindings
Fix allocation and deallocation of string lists in golang bindings (Laszlo Ersek).

Multiple fixes to the OCaml bindings: Fix warnings, move minimum version to OCaml 4.04,
replace various deprecated OCaml features with modern OCaml features.

Running "make distclean" in the rust directory now completely cleans the cargo temporary
files.

Inspection
Fix inspection of modern Pardus GNU/Linux (Laszlo Ersek).

Add support for Kylin (Laszlo Ersek).

Add support for Rocky Linux (Neil Hanlon).

Inspection of guests which use LUKS encryption on top of LVM logical volumes should now
work (Laszlo Ersek).

API
New APIs

No new APIs were added in libguestfs 1.48.

Other API changes

"guestfs_list_9p" and "guestfs_mount_9p" are deprecated and now return errors.

"guestfs_remove_drive" has been deprecated and now returns an error.

In "guestfs_xfs_admin" the "lazycounter" parameter is deprecated because it is no longer
supported in recent versions of XFS.

Partition APIs now cope with the broken MBR partition tables created by dosfstools ≥ 4.2
(Laszlo Ersek).

In "guestfs_md_create" the "chunk" parameter should not be used with RAID 1. Previously
it was allowed but ignored, but now it will give an error (Laszlo Ersek).

Build changes
Multiple compiler warnings fixed and/or analyzed and suppressed (Laszlo Ersek).

Fix detection of optional Yara library using pkg-config instead of checking for
library/header file (Laszlo Ersek).

Update valgrind suppressions for glibc 2.35, OCaml 4.13 and libvirt 7.7. "make
check-valgrind" works again.

If using libvirt ≥ 3.8.0, we now use <interface> to create the appliance network interface
instead of adding qemu command line parameters (Laszlo Ersek).

The guestfs-release-notes(1) page was a broken link, but it has now been restored as a new
page that links to the release notes from each stable release.

Internals
The libc API strerror_r(3) is difficult to use correctly because of differing signatures
in glibc and other libc. A wrapper "guestfs_int_strerror" has been created to hide the
differences.

Bugs fixed
https://bugzilla.redhat.com/2030709
[RFE] libguestfs: Add Rocky Linux support

https://bugzilla.redhat.com/2030396
Fix usage of strerror_r which caused corrupted error messages

https://bugzilla.redhat.com/2024022
xfs-admin: Cannot disable lazy-counters on V5 fs

https://bugzilla.redhat.com/1995391
RFE: virt-inspector fails to detect the distro and applications on Kylin-Desktop-V10
image

https://bugzilla.redhat.com/1993842
RFE: virt-inspector fails to detect the distro on Pardus-19.5 image

https://bugzilla.redhat.com/1931821
work around mkfs.vfat writes corrupted filesystem/partition table when used on whole
block device

https://bugzilla.redhat.com/1451665
RFE: Virt-v2v can't convert the guest which has encrypted partition

AUTHORS

       Laszlo Ersek
       Neil Hanlon
       Richard W.M. Jones

COPYRIGHT

       Copyright (C) 2009-2023 Red Hat Inc.

LICENSE

       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.

BUGS