Provided by: libguestfs0t64_1.54.1-1ubuntu3_amd64 bug

NAME

       guestfs-release-notes - libguestfs Release Notes

RELEASE NOTES FOR LIBGUESTFS 1.38

       These release notes only cover the differences from the previous stable/dev branch split (1.36.0).  For
       detailed changelogs, please see the git repository, or the ChangeLog file distributed in the tarball.

   New features
       New tools

       Virt-builder-repository is a new tool allowing end users to create and update virt-builder repositories
       (Cédric Bosdonnat).

       Virt-rescue (while not a new tool) has been substantially rewritten, implementing job control, -m and -i
       options, escape keys, etc.

       New features in existing tools

       Virt-builder planner has been improved so that faster and more efficient build plans are chosen for
       complex cases, especially when either the tmpdir or output is on networked storage.

       New virt-builder Fedora templates (starting with Fedora 26) will have plain partition layout and use GPT
       for partitions.

       Virt-customize "firstboot" scripts in guests using systemd are now installed under the
       "multi-user.target" instead of "default.target" so they will only run when the system is booted normally.

       Virt-customize now sets a random /etc/machine-id for Linux guests, if one is not already set.

       Virt-df now works correctly on filesystems with block sizes smaller than 1K (Nikolay Ivanets).

       Virt-dib has further compatibility enhancements with diskimage-builder (Pino Toscano).

       Virt-sysprep removes "DHCP_HOSTNAME" from ifcfg-* files.

       Virt-sysprep now works on Oracle Linux (Jamie Iles).

       Virt-resize now correctly copies GPT partition attributes from the source to the destination (Cédric
       Bosdonnat).

       Bash tab completion implemented or enhanced for: virt-win-reg, virt-v2v-copy-to-local.

       virt-v2v and virt-p2v

       Virt-v2v can now read VMware VMX files directly, either from local disk, NFS storage, or over SSH from an
       ESXi hypervisor.

       Virt-v2v can now use VDDK as an input source.

       Both virt-v2v and virt-p2v are now able to pass through the source CPU vendor, model and topology.
       However unfortunately not all source and target hypervisors are able to provide or consume this data at
       present (Tomáš Golembiovský).

       Virt-v2v now supports encrypted guests (Pino Toscano).

       Virt-v2v can now handle VMware snapshots.  Note that the snapshots are collapsed — it does not convert
       the chain of snapshots into a chain of snapshots.

       Virt-v2v now installs Windows 10 / Windows Server 2016 virtio block drivers correctly (Pavel Butsykin,
       Kun Wei).

       Virt-v2v now installs virtio-rng, balloon and pvpanic drivers, and correctly sets this in the target
       hypervisor metadata for hypervisors which support that (Tomáš Golembiovský).

       Virt-v2v now installs both legacy and modern virtio keys in the Windows registry (Ladi Prosek).

       Virt-p2v can now preserve (in some cases) the offset of the Real Time Clock from UTC.

       Virt-p2v now combines several scp commands to the conversion server into a single command, improving
       conversion times.

       Virt-v2v now detects the special Linux Xen PV-only kernels correctly (Laszlo Ersek).

       Virt-v2v -o glance now generates the right properties for UEFI guests (Pino Toscano).

       Virt-v2v -o null now avoids spooling the guest to a temporary file, instead it writes to the qemu "null
       block device".  This makes it faster and use almost no disk space.

       Virt-v2v -o rhv now supports Windows 2016 Server guest type.

       Virt-v2v -i libvirtxml can now open network disks over http or https.

       Virt-v2v will now give a warning about host passthrough devices (Pino Toscano).

       The virt-v2v --machine-readable output has been enhanced so it includes "vcenter-https", "xen-ssh" and
       "in-place" facts (Pino Toscano).

       Language bindings

       Fix multiple memory leaks and other data corruption problems in the Java bindings (Pino Toscano).

       Perl %guestfs_introspection has been dropped.

       Inspection

       Inspection support was rewritten in OCaml and included inside the daemon.  This makes inspection
       considerably faster, more robust and more easily extensible in future.

       Better icon support for ALT Linux guests (Pino Toscano).

       Better support for NeoKylin (Qingzheng Zhang).

       Can handle OSes like Void Linux which do not include "VERSION_ID" in /etc/os-release (Pino Toscano).

       Add support for Microsoft MS-DOS (Daniel Berrangé).

       Architectures and platforms

       Multiple fixes for S/390 architecture.  Libguestfs and all the tools should now compile and run on this
       architecture.

       Other

       The libguestfs API is now thread-safe (although not parallel).  You can call APIs on the same handle from
       multiple threads without needing to take a lock.

   Security
       There were multiple vulnerabilities in the icoutils "wrestool" program which is run by libguestfs to
       create icons for Windows guests.  Using the latest "wrestool" is recommended.

   API
       New APIs

       "hivex_value_string"
           This replaces the deprecated "hivex_value_utf8" API, but does the same thing.

       "part_get_gpt_attributes"
       "part_set_gpt_attributes"
           Read and write GPT partition attribute flags (Cédric Bosdonnat).

       "part_resize"
           Enlarge or shrink an existing partition (Nikos Skalkotos).

       "yara_destroy"
       "yara_load"
       "yara_scan"
           Support for the Yara malware scanning engine (Matteo Cafasso).

       Other API changes

       APIs  implemented  in the daemon can now be written in either C or OCaml.  Several APIs were rewritten in
       OCaml, although we are not planning to rewrite all of them.

       You will now get a clear error message if you try to add too many disks  to  the  appliance,  instead  of
       getting a peculiar failure from qemu.

       Certain   APIs   accidentally   allowed   you   to   use   "/dev/urandom"   as  an  input  "device",  eg.
       "g.copy_device_to_device("/dev/urandom", "/dev/sda")".  The code has been modified to forbid this usage.

       All APIs for inspecting installer CDs have been deprecated.  Use libosinfo for this task.

   Build changes
       A  working  OCaml  compiler  ≥  4.01  is  now  required  for  building  libguestfs.    The   "./configure
       --disable-ocaml" option remains but is only used to disable the OCaml language bindings.

       Add  "RELEASES" file which lists release dates for each version of libguestfs.  You must update this file
       when making a new release.

       Documentation generated by "gtk-doc" has been removed.  "./configure --enable-gtk-doc" now does nothing.

       Libtirpc is now used for XDR functions and rpcgen.  Note that glibc has  deprecated  and  in  most  Linux
       distros dropped these, so for most people this will be an extra dependency (Martin Kletzander).

       Libxcrypt is now used for crypt(3).  This is required if using glibc ≥ 2.27.

       "ocaml-hivex" is now required.

       Libvirt ≥ 1.2.20 is now required.

       There  is  now  a  "make  check-root"  target  for tests which need to be run as root (analogous to "make
       check-slow").

       "./configure"-time check for "__attribute__((cleanup))" now works in the cross-compilation case (Yann  E.
       Morin).

       The "AUTHORS" and "p2v/about-authors.c" files are now generated from a single place.

       Either GnuPG v1 or v2 can be used.

       "./configure  --with-guestfs-path" may be used to set the default "LIBGUESTFS_PATH".  In addition the way
       that the path is searched has changed slightly so that all types of appliances are searched in each  path
       element separately (Pavel Butsykin).

       "GUESTFSD_EXT_CMD"  which  was  used  to  mark  external commands in the daemon has been removed.  It was
       originally used by SUSE builds, but they have not been using it for a while.

       The output from "./configure" is now visually grouped under headings related to what it is doing,  making
       it much easier to scan (Pino Toscano).

       OCaml dependencies are now generated from a single script instead of multiple not-quite-the-same Makefile
       fragments.

       "./configure  --with-distro=ID"  can  be  used to override automatic Linux distro detection at build time
       (Pino Toscano).

       qemu ≥ 2.10 is supported (but not required).  This adds mandatory locking to disks and  libguestfs  turns
       this  off  in  certain  circumstances  when  it  is  known  to be safe (Lars Seipel, Peter Krempa, Daniel
       Berrangé, Pino Toscano, Fam Zheng, Yongkui Guo, Václav Kadlčík).

   Internals
       Most common code has been moved to the common/ subdirectory, with OCaml common code being  in  common/ml*
       directories   (eg.   common/visit  and  common/mlvisit  contain  the  visitor  library  in  C  and  OCaml
       respectively).  The mllib directory has been deleted and replaced by common/mltools.

       There is now a lightweight OCaml binding for PCRE, see common/mlpcre.  Use of  OCaml  "Str"  library  has
       been mostly replaced with PCRE.

       Add more calls to "udev_settle" to improve stability of partition code (Dawid Zamirski).

       Run  "udev_settle"  with  --exit-if-exists  option,  which  improves  the  speed  of  this command (Pavel
       Butsykin).

       Detect new locations of major(3), minor(3), makedev(3).

       Actions can now be deprecated with no suggested replacement, for APIs such as  "guestfs_wait_ready"  that
       should simply be removed from client code.

       Use  gnulib  "set_nonblocking_flag"  wrapper  instead of calling fcntl(2) with "O_NONBLOCK" (Eric Blake).
       Similarly "set_cloexec_flag".

       Fix memory leak in XFS version of "guestfs_vfs_minimum_size" (Pino Toscano).

       Valgrind checks now run on the virt-p2v binary.

       Unicode single quotes ("‘’") and now used in place of '' or `' throughout  the  code  and  documentation.
       Similarly for "’s" instead of "'s".

       The "is_zero" function has been reimplemented for greater speed (Eric Blake).

       In the direct backend, virtio-blk support has been removed.  Virtio-scsi is now the only supported way to
       add disks.

       Generator string parameter and return types have been rationalised so there are only two types ("String",
       "StringList") with many subtypes eg. "FileIn" becomes "String (FileIn, ...)".

       The appliance disk image can now be in formats other than raw (Pavel Butsykin).

       Multiple  improvements  to  how  we automatically build Debian templates for virt-builder (Pino Toscano).
       Enable serial console for these templates (Florian Klink).

       In the daemon, instead of making a private copy of lvm.conf and modifying it (eg for filters), start with
       an empty file since LVM understands that to mean "all defaults" (Alasdair Kergon, Zdenek Kabelac).

       The "direct" backend can now run QMP queries against the QEMU binary, enhancing the kinds of  information
       we  can  detect.   In  addition  the  code  to query QEMU has been made more robust for handling multiple
       parallel queries of different versions of QEMU.

       OCaml Augeas bindings are bundled under common/mlaugeas.  The long term plan is to remove  this  and  use
       system ocaml-augeas when it is more widely available in distros (Pino Toscano).

       All  OCaml  modules  ("*.ml"  files) are now required to have an interface file ("*.mli").  If they don't
       export anything then the interface will be empty except for comments.

       Certain OCaml features in OCaml ≥ 4.01 are used throughout the code, including replacing ‘{ field = field
       }’ with ‘{ field }’.

       Virt-builder "make-template" utility now uses the "virt-install --transient" option  so  that  we  should
       never  need  to  clean  up  left  over  domains after a crash.  It also saves kickstarts and virt-install
       commands, which are committed to git for future reference.

       /dev/shm is now created in the appliance (Nicolas Hicher).

       In verbose mode on Fedora guests, virt-customize will now use "dnf --verbose" enabling  better  debugging
       output.

       Virt-v2v input and output classes now contain a "#precheck" method which is used to perform environmental
       checks before conversion starts.

       Virt-p2v enables miniexpect debugging.  It is written to stderr (of virt-p2v).

       Virt-v2v free space checks are more liberal especially for smaller guests (Pino Toscano).

   Bugs fixed
       https://bugzilla.redhat.com/1540535
           Example URI of "Convert from ESXi hypervisor over SSH to local libvirt" is incorrect in v2v man page

       https://bugzilla.redhat.com/1539395
           virt-customize segfaults after upgrading to 1.37.35-3

       https://bugzilla.redhat.com/1536765
           Libguestfs Perl bindings can leak a small amount of memory on error

       https://bugzilla.redhat.com/1536763
           libguestfs Lua bindings use strerror(), which isn’t thread safe

       https://bugzilla.redhat.com/1536603
           man page makes no mention of using '--' when trying to change exit on error behavior

       https://bugzilla.redhat.com/1525241
           virt-df displays zeros for filesystems with block size =512

       https://bugzilla.redhat.com/1519204
           v2v  should  improve  the  result when convert a rhel7.4 guest with no available kernels found in the
           bootloader

       https://bugzilla.redhat.com/1518517
           virt-v2v fails with "unsupported configuration:  shared  access  for   disk  'sdb'  requires  use  of
           supported storage format"

       https://bugzilla.redhat.com/1516094
           Mere  presence  of  QEMU  file  locking  options breaks NBD (Block protocol 'nbd' doesn't support the
           option 'locking')

       https://bugzilla.redhat.com/1514756
           ./configure --disable-ocaml breaks building common/mlpcre which breaks building daemon

       https://bugzilla.redhat.com/1513884
           [RFE]Should update some vddk info in v2v man page

       https://bugzilla.redhat.com/1508874
           virt-v2v: warning: ova disk has an unknown VMware controller type (20)

       https://bugzilla.redhat.com/1506572
           virt-v2v '-i ova' is not parsing the MAC address from the source OVF

       https://bugzilla.redhat.com/1506511
           virt-builder fails to parse repo file if it has blank space after the repository identifier

       https://bugzilla.redhat.com/1503958
           Failed to convert the rhel5 guest with kmod-xenpv installed from xen server by virt-v2v

       https://bugzilla.redhat.com/1503497
           qemu-kvm fails to open qcow2 files in read-only mode with qemu-kvm 1.5.3

       https://bugzilla.redhat.com/1500673
           Error info shows wrong sometimes when ssh to conversion server using non-root user with sudo  on  p2v
           client

       https://bugzilla.redhat.com/1500537
           /dev/shm does not exist in the appliance environment

       https://bugzilla.redhat.com/1497475
           guestfish cannot list commands from interactive mode

       https://bugzilla.redhat.com/1493048
           Unbound constructor Hivex.OPEN_UNSAFE

       https://bugzilla.redhat.com/1484957
           bump debian images to use single-partition layout

       https://bugzilla.redhat.com/1482737
           virt-resize failed to expand swap partition for RHEL5.11 guest image with "parsing UUID failed"

       https://bugzilla.redhat.com/1477623
           Running file API on a special chardev may hang forever

       https://bugzilla.redhat.com/1476081
           inspect-os  report error: could not parse integer in version number: V7Update2

       https://bugzilla.redhat.com/1472719
           [RFE]Add warning in process of v2v converting guest which has pci passthrough device

       https://bugzilla.redhat.com/1472208
           virt-v2v  fails  on  opensuse  13.2  guest  with error: statns: statns_stub: path must start with a /
           character

       https://bugzilla.redhat.com/1469655
           firstboot scripts are not correctly installed in Fedora 26

       https://bugzilla.redhat.com/1466563
           Libguestfs should pass copyonread flag through to the libvirt XML

       https://bugzilla.redhat.com/1465665
           1.36.x build failure:  gtkdocize  fails  using  newer  autotools  due  to  missing  GTK_DOC_CHECK  in
           configure.ac

       https://bugzilla.redhat.com/1460338
           guestfs_shutdown hangs if main process sets signal handlers

       https://bugzilla.redhat.com/1459979
           guestfs_add_domain_argv fails with readonly option when vdi/vhd disk is attached to libvirt domain

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

       https://bugzilla.redhat.com/1450325
           document URI format for -a parameters of tools

       https://bugzilla.redhat.com/1448739
           RFE: Support multicore decompression for OVA files using pigz and pxz

       https://bugzilla.redhat.com/1447202
           Win 2016 guest is described as Win 10 after imported to RHEVM

       https://bugzilla.redhat.com/1441197
           RFE: ability to convert VMware virtual machines via vmx

       https://bugzilla.redhat.com/1438939
           Please drop or update GnuPG (1.4.x) dependency

       https://bugzilla.redhat.com/1438794
           [RFE] Install Windows virtio-rng drivers on VMs imported

       https://bugzilla.redhat.com/1433937
           virt-inspector can't get icon info from altlinux-centaurus

       https://bugzilla.redhat.com/1433577
           policycoreutils setfiles >= 2.6 does .. nothing

       https://bugzilla.redhat.com/1431579
           Windows 8 UEFI from VMware to KVM fails to boot after conversion

       https://bugzilla.redhat.com/1430680
           There is error info about "No such file or directory" when convert a guest from ova file by v2v

       https://bugzilla.redhat.com/1430184
           virt-dib should generate sha256 checksum instead of sha512

       https://bugzilla.redhat.com/1429506
           RFE: OVMF should be detected on conversion server to prevent failed conversion

       https://bugzilla.redhat.com/1429491
           Should rename network name of rhv in virt-v2v man page

       https://bugzilla.redhat.com/1427529
           virt-sysprep should remove DHCP_HOSTNAME

       https://bugzilla.redhat.com/1417306
           QEMU image file locking (libguestfs)

       https://bugzilla.redhat.com/1409024
           [Debian] Missing db_dump abort inspection

       https://bugzilla.redhat.com/1406906
           Segmentation fault when reading corrupted path with Python 3 bindings

       https://bugzilla.redhat.com/1379289
           RFE: virt-p2v should support mnemonic operations

       https://bugzilla.redhat.com/1378022
           There  is  virt-v2v  warning  about  <listen  type='none'> during converting a guest which has listen
           type='none' in XML

       https://bugzilla.redhat.com/1376547
           qemu-system-s390x: -device isa-serial,chardev=charserial0,id=serial0: 'isa-serial'  is  not  a  valid
           device model name

       https://bugzilla.redhat.com/1374232
           selinux relabel fails on RHEL 6.2 guests with "libguestfs error: selinux_relabel: : Success"

       https://bugzilla.redhat.com/1367738
           Missing bash completion scripts for: virt-diff guestunmount virt-copy-in virt-copy-out virt-customize
           virt-get-kernel      virt-p2v-make-disk      virt-p2v-make-kickstart     virt-tar-in     virt-tar-out
           virt-v2v-copy-to-local virt-win-reg

       https://bugzilla.redhat.com/1362649
           RFE: virt-sysprep does not utilize libguestfs encryption support

       https://bugzilla.redhat.com/1172425
           [RFE]virt-v2v failed to convert VMware ESX VM with snapshot

       https://bugzilla.redhat.com/1171654
           Modify a file in virt-rescue with vi on some linux terminal such as yakuake,  can  lead  to  abnormal
           display in virt-rescue shell

       https://bugzilla.redhat.com/1167623
           Remove "If reporting bugs, run virt-v2v with debugging enabled .." message when running virt-p2v

       https://bugzilla.redhat.com/1152819
           Can not end a running command in virt-rescue by press ^C or other keys, the only way is to exit virt-
           rescue

SEE ALSO

       guestfs-examples(1),   guestfs-faq(1),  guestfs-performance(1),  guestfs-recipes(1),  guestfs-testing(1),
       guestfs(3), guestfish(1), http://libguestfs.org/

AUTHOR

       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

       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.

libguestfs-1.54.1                                  2025-02-18                      guestfs-release-notes-1.38(1)