guestfs-release-notes - libguestfs
リリースノート
These release notes only cover the differences from the previous stable/dev
branch split (1.32.0). For detailed changelogs, please see the git repository,
or the ChangeLog file distributed in the tarball.
Multiple performance enhancements were made in libguestfs. The "hot
cache" time to launch to appliance should be under 1 second assuming
recent qemu and kernel are installed. There are also new utilities for
precisely benchmarking libguestfs (
utils/boot-benchmark and
utils/boot-analysis in the source tree).
The virt-p2v tool for converting physical machines to virtual machines was
substantially improved. This includes: clearer, coloured output during
conversions, support for Gtk 3, more detailed information about hardware,
click to identify network interfaces, more debugging tools included with the
ISO, and many bug fixes.
f2fs (Flash Friendly File System) is now supported (Pino Toscano).
New tools
virt-p2v-make-kiwi(1) can be used to build the virt-p2v ISO based on SLES
and openSUSE, using the kiwi utility (Cédric Bosdonnat).
New features in existing tools
virt-resize will now preserve the GPT GUID. This was required for Windows Server
2012 R2, where the bootloader would become confused if the GUID changed (Maxim
Perevedentsev).
virt-resize will use sparse copying for (old MBR-style) extended partitions.
This makes resizing of guests that use extended partitions much faster (Maxim
Perevedentsev).
virt-p2v kernel command line options can now be used to set defaults for GUI
configuration.
The virt-p2v debugging options have been completely removed, simplifying the
interface and documentation. Debugging information is now captured fully
automatically.
virt-p2v-make-disk lets you specify an
--arch option, allowing you to
build a 32 bit virt-p2v, for compatibility with older systems.
virt-p2v-make-disk no longer requires that you specify an "os-version"
for the virt-p2v disk. If omitted it will try to choose a suitable
"os-version" depending on your host system.
virt-p2v-make-disk and virt-p2v-make-kickstart both gain a new
--install
option that allows you to add arbitrary extra packages to the virt-p2v ISO,
for customization, additional debugging tools and so on.
virt-v2v will now uninstall Parallels Tools (or the equivalent Virtuozzo Tools)
from Linux guests. Also stop the Windows drivers from loading at boot. (Roman
Kagan and Pavel Butsykin)
virt-v2v
--in-place mode has been enhanced to allow the caller to choose
whether or not to install certain virtio drivers in the guest (Roman Kagan).
virt-v2v conversion of Windows guests was substantially rewritten and simplified
(Roman Kagan).
virt-v2v
--in-place mode now supports installing virtio-scsi drivers in
guests (Roman Kagan).
virt-v2v can now convert SUSE guests and SUSE guests using UEFI (Cédric
Bosdonnat and Jim Fehlig).
virt-v2v can now convert guests to Glance that have multiple disks. Previously
it would fail on such guests.
The virt-v2v
--no-trim and
--vmtype options are now no-ops. They
will print a warning but are otherwise ignored. virt-v2v can now generate the
OVF vmtype correctly without user intervention.
virt-v2v has now been tested against SUSE Xen as a source hypervisor
(Cédric Bosdonnat).
virt-v2v adds support for SUSE VMDP drivers (Cédric Bosdonnat).
virt-v2v can convert OVA files containing subfolders, as produced by SUSE Studio
(Cédric Bosdonnat).
virt-v2v sets the OVF "<Origin>" element correctly. oVirt has
been extended to support more source hypervisors (Shahar Havivi).
virt-v2v now supports Windows Server 2016 (Tomáš
Golembiovský).
The virt-builder
--list option can now be used to show all templates or a
single template (Pino Toscano).
All OCaml-based tools now use
getopt_long(3) for option parsing, and
--help output has been improved (Pino Toscano).
virt-builder and virt-customize
--selinux-relabel option can now fully
relabel the guest filesystem at build time, without requiring a lengthy
autorelabel at first boot.
virt-customize
--delete now accepts globs.
New virt-customize
--uninstall option lets you uninstall packages.
virt-customize can now use "pvvxsvc" as an alternative to
"rhsrvany" for running firstboot scripts in Windows guests
(Cédric Bosdonnat).
virt-customize now uses the strongest hashing scheme for passwords on Arch and
Void Linux (Pino Toscano).
virt-customize
--install now works correctly on Arch (Pino Toscano).
virt-inspector has new options
--no-applications and
--no-icon to
prevent the list of applications and icon from being included in the XML
output (Pino Toscano).
New virt-sysprep
--network option has been added, allowing you to
actually use the
--install etc options which were present in
virt-sysprep before but did not usually work. Note that the network is still
disabled by default.
virt-sysprep "fs-uuids" operation no longer fails on btrfs guests
(Maxim Perevedentsev).
virt-dib can output Docker images (Pino Toscano).
virt-dib has a new
--drive-format option to allow the user to specify the
format of the helper drive (Pino Toscano).
All OCaml virt tools now have a
--colors/
--colours option which
enables coloured output (using ANSI escape sequences) even if the output is
not a tty. The default is to check if the output is a tty and disable coloured
output if not. This allows coloured output to be consumed by other tools.
Language bindings
PHP test coverage has been enhanced (Pino Toscano).
PHP 7 is now supported (Pino Toscano).
Python bindings are now compliant with PEP 8 (Pino Toscano).
A Python pip package is available in
http://libguestfs.org/download/python/
The Ruby bindings now print the full exception if one is thrown by the event
callback. Note this is still incorrect behaviour as event callbacks should not
throw exceptions, but it aids debugging.
All OCaml libraries and programs are now compiled with
-safe-string, if
supported by the OCaml compiler.
Inspection
Alpine Linux using busybox can now be inspected. Also the APK package manager is
supported in virt-customize (Pino Toscano).
We now handle inspection of Mageia 4 (Pino Toscano).
Void Linux and the Void Linux xbps package manager are fully supported (Pino
Toscano).
Parsing of CoreOS version information has been enhanced (Pino Toscano).
It is now possible to get an icon from ALT Linux (Pino Toscano).
PLD Linux versions < 3 are now recognized (Pino Toscano).
Windows drive letters are now returned for guests using GPT partitions (Dawid
Zamirski).
We can now correctly inspect Unix guests that do not have an
/etc/fstab
file (Pino Toscano).
Added another source for the Ubuntu icon which doesn't rely on GNOME having been
installed in the guest.
We can now get an icon for Windows 7 64 bit guests.
Libosinfo integration was rewritten to deal with the new database format used by
osinfo (Pino Toscano).
Documentation
New manual page
guestfs-building(1) describes how to build libguestfs
from source.
The man pages, tools and tool
--help output is now automatically checked
to ensure that all tool options are properly documented, that warning sections
are included where necessary, and that every page has a description section.
The
guestfs-testing(1) man page has been refreshed and based on a newer
libguestfs.
Architectures and platforms
virt-customize now works on POWER7 and POWER8 platforms, both big endian and
little endian (Xianghua Chen and Hu Zhang).
See also
guestfs-security(1).
CVE-2015-8869
https://bugzilla.redhat.com/CVE-2015-8869
This vulnerability in OCaml might affect virt tools written in the OCaml
programming language. It affects only 64 bit platforms. Because this bug
affects code generation it is difficult to predict which precise software
could be affected, and therefore our recommendation is that you recompile
libguestfs using a version of the OCaml compiler where this bug has been fixed
(or ask your Linux distro to do the same).
virt-customize ownership of .ssh,
.ssh/authorized_keys
https://bugzilla.redhat.com/1337561
Previously when virt-customize injected an SSH key into a guest, when it created
the
~/.ssh and
~/.ssh/authorized_keys directory and file (in
case they were missing) it created them with owner and group
"root.root". This has been fixed so the correct user is used. This
is not thought to have been exploitable.
Windows "%systemroot%"
The inspection code has been made more robust against guests which might use
very long "%systemroot%" (derived from the guest-controlled Windows
Registry). This is not thought to have been exploitable.
Virtio-rng is now available in the appliance
virtio-rng (the virtual Random Number Generator device) is now passed to the
appliance, which should improve the quality random numbers generated for GUIDs
and cryptographic key generation.
New APIs
- "btrfs_filesystem_show"
- List all devices where a btrfs filesystem is spanned (Pino
Toscano).
- "download_blocks"
- "download_inode"
- "filesystem_walk"
- Download filesystem data blocks from a given partition.
Download arbitrary files by inode number. Retrieve all files from a
filesystem including deleted files.
Note these require optional dependency The Sleuth Kit. (Matteo Cafasso)
- "get_sockdir"
- Read the path where temporary sockets are stored (Pino
Toscano).
- "mountable_device"
- "mountable_subvolume"
- Split a Mountable into device name and subvolume
(Cédric Bosdonnat).
- "ntfscat_i"
- Download NTFS file by inode number (Matteo Cafasso).
- "part_expand_gpt"
- Allow in-place expanding of GPT partitions by moving the
second (backup) partition table to the end of the disk (Maxim
Perevedentsev).
- "part_get_disk_guid"
- "part_set_disk_guid"
- "part_set_disk_guid_random"
- Get and set the GPT disk GUID, or set it to a fresh random
value (Maxim Perevedentsev).
- "selinux_relabel"
- SELinux-relabel part or all of the guest filesystem.
Other API changes
"guestfs_set_selinux", "guestfs_get_selinux",
"guestfs_setcon", "guestfs_getcon" and
"guestfs_llz" have been deprecated. Use the new API
"guestfs_selinux_relabel" to relabel filesystems. Use
"guestfs_lgetxattrs" to list the "security.selinux"
extended attributes of existing files.
"guestfs_vfs_minimum_size" can now be used on dirty filesystems (Maxim
Perevedentsev).
"guestfs_ll" now works on paths which contain absolute symlinks (Pino
Toscano).
"guestfs_glob_expand" now has an optional "directoryslash"
boolean parameter which controls whether trailing slashes are returned for
directory names (Pino Toscano).
"guestfs_lvs" will no longer return LVs which have the
"activationskip" flag set. The reason is that such LVs have no
"/dev/VG/LV" device node and so code which read the list of LVs and
then probed the devices themselves would immediately fail. You can use
"guestfs_lvs_full" if you want to read all LVs. (Pino Toscano).
"guestfs_list_disk_labels" now no longer fails if no disks with labels
were added. Instead it now returns an empty list (Pino Toscano).
"guestfs_is_lv" no longer fails if passed a btrfs subvolume, it
returns false instead (Maxim Perevedentsev).
qemu ≥ 1.3.0 is required.
yajl (a JSON parsing library) is required to build libguestfs.
You can now build with GCC 6.
"make check-valgrind" now has substantially better coverage.
"make check-slow" now works again.
Use "make -C appliance clean-supermin-appliance" to clean the supermin
appliance (it will be rebuilt on next "make").
There are a variety of new rules for running virt-p2v from the source directory:
"make -C p2v run-virt-p2v-directly" |
"run-virt-p2v-in-a-vm" |
"run-virt-p2v-non-gui-conversion". These are documented further in
guestfs-hacking(1).
virt-p2v may be built using either Gtk 2 or Gtk 3. To force a particular version
of Gtk to be used, "./configure --with-gtk=2|3"
The "./configure" options are now mostly documented in
guestfs-building(1).
In git, versions are now tagged with "v1.XX.YY" (previously they were
tagged with "1.XX.YY"). Using the "v-" prefix is more
common in git repositories.
When using the libvirt backend, we now wait for qemu to exit gracefully instead
of killing it after 15 seconds. This helps when writing to slow devices
(especially cheap USB keys).
Error messages from libvirt now include the "err->int1" field which
usually contains the "errno".
On ARM, all DTB (device tree) code has been removed. qemu creates the right
device tree on the fly, we do not need to specify one.
The C API tests now use larger test disks, allowing BTRFS to be tested properly
(Pino Toscano).
The tests should now work on a pure Python 3 host (Pino Toscano).
In C bindings, internal functions are now (mostly) consistently named
"guestfs_int_*" whereas previously there was no consistent scheme.
The old "safe_malloc" etc functions are now no longer exported by the
library, nor used in language bindings.
Setting TMPDIR to a path longer than ~ 100 characters will no longer cause
libguestfs to fail silently and randomly when creating Unix domain sockets
(Pino Toscano).
The "COMPILE_REGEXP" macro can now be used in the daemon.
When tracing, results containing structs are now printed in full (Pino Toscano).
The Perl "Sys::Guestfs" module now no longer embeds an incrementing
API "version number". This module is now always at phony version
"1.0". To find the real version of libguestfs from Perl you must
call "$g->version".
All code is compiled with "-Wstack-usage=10000" and multiple changes
have been made to remove stack allocation of large strings and buffers.
The
error(3) function is now used everywhere, replacing most previous
uses of
perror(3) +
exit(3), and
fprintf(3) + exit.
In C code, "/**" comments are turned into documentation which is
automatically added to the
guestfs-hacking(1) manual page.
A safe "getumask" function has been added. For recent Linux kernels
this uses the newly added "Umask" field in
/proc/self/status.
For older Linux and other Unix, this uses a thread-safe technique involving
fork(2) (thanks: Josh Stone, Jiri Jaburek, Eric Blake).
Safe
posix_fadvise(2) wrappers have been added, and more hints have been
added to the code which may make a minor difference to performance.
A safe wrapper around
waitpid(2) has been added which handles
"INTR" properly.
"podwrapper.pl" (used to generate the manual pages) now stops if any
POD error is found. A new script called "podcheck.pl" does
cross-checking of
--help output, tool options and manual pages.
All version numbers in the library (eg. versions of qemu, versions of libvirt,
versions of guest operating systems) are unified in a single file
src/version.c (Pino Toscano).
On Windows guests, virt-customize will use the vendor-neutral path
"C:\Program Files\Guestfs\Firstboot" to store firstboot
scripts. Previously it used
"C:\Program Files\Red Hat\Firstboot". This change
should be invisible to the scripts themselves. (Cédric Bosdonnat)
On Linux guests, the firstboot services generated by virt-builder
--firstboot etc have been renamed to "guestfs-firstboot"
(Pino Toscano).
There is now a common "debug" function used by all OCaml tools,
replacing previous code which did
"if verbose () then printf ...".
virt-p2v copies files it needs over to the virt-v2v conversion server using
scp(1), instead of trying to send them via the shell session. This
should improve reliability and should be a completely transparent to end
users.
All code in
mllib is now built into a single "mllib.cma" or
"mllib.cmxa" library. All code in
customize is now built into
a single "customize.cma" or "customize.cmxa" library. This
simplifies the build of the OCaml tools.
lvmetad(8) is now used in the appliance when available (Pino Toscano).
"Silent rules" are used for OCaml, Java, Erlang and POD. Use
"make V=1" to see the full command lines again (Pino Toscano).
- https://bugzilla.redhat.com/1364347
- virt-sparsify --in-place failed with UEFI system
- https://bugzilla.redhat.com/1362357
- run_command runs exit handlers when execve fails (e.g. due
to missing executable)
- https://bugzilla.redhat.com/1362354
- virt-dib failed to create image using
DIB_YUM_REPO_CONF
- https://bugzilla.redhat.com/1359652
- Fail to inspect Windows ISO file
- https://bugzilla.redhat.com/1358142
- Some info will show when convert guest to libvirt by
virt-v2v with parameter --quiet
- https://bugzilla.redhat.com/1354335
- overlay of disk images does not specify the format of the
backing file
- https://bugzilla.redhat.com/1352761
- Virt-manager can't show OS icons of win7/win8/ubuntu
guest.
- https://bugzilla.redhat.com/1350363
- Improve error info "remote server timeout unexpectedly
waiting for password prompt" when connect to a bogus server at p2v
client
- https://bugzilla.redhat.com/1348900
- virt-p2v should update error prompt when 'Test connection'
with a non-existing user in conversion server
- https://bugzilla.redhat.com/1345813
- virt-sysprep --install always failed to install the
packages specified
- https://bugzilla.redhat.com/1345809
- virt-customize --truncate-recursive should give an error
message when specifying a no-existing path
- https://bugzilla.redhat.com/1343423
- [RFE]Should give a better description about 'curl error 22'
when failed using ssh identity http url at p2v client
- https://bugzilla.redhat.com/1343414
- Failed SSH to conversion server by ssh identity http url at
p2v client
- https://bugzilla.redhat.com/1343375
- [RFE] uninstall packages inside the VM
- https://bugzilla.redhat.com/1342447
- Ifconfig command is not supported on p2v client
- https://bugzilla.redhat.com/1342398
- Convert a guest from RHEL by virt-v2v but its origin info
shows RHEV at rhevm
- https://bugzilla.redhat.com/1342337
- Should remind a warning about disk image has a partition
when using virt-p2v-make-disk
- https://bugzilla.redhat.com/1341984
- virt-get-kernel prompts an 'invalid value' error when using
--format auto
- https://bugzilla.redhat.com/1341564
- virt-p2v spinner should be hidden when it stops
spinning
- https://bugzilla.redhat.com/1340809
- Testing connection timeout when input regular user of
conversion server with checked "use sudo......"button
- https://bugzilla.redhat.com/1340464
- [RFE] Suggestion give user a reminder for "Cancel
conversion" button
- https://bugzilla.redhat.com/1340407
- Multiple network ports will not be aligned at p2v
client
- https://bugzilla.redhat.com/1338083
- Update UEFI whitelist for official fedora packages
- https://bugzilla.redhat.com/1337561
- virt-customize --ssh-inject not applying correct file
permission
- https://bugzilla.redhat.com/1335671
- extra quotes around UUID confuses findfs in RHEL (but not
in Fedora)
- https://bugzilla.redhat.com/1332025
- Inspection does not parse /etc/redhat-release containing
"Derived from Red Hat Enterprise Linux 7.1 (Source)"
- https://bugzilla.redhat.com/1327488
- RFE: Allow p2v kernel options without p2v.server to set
defaults
- https://bugzilla.redhat.com/1325825
- virt-v2v should prevent using multiple '-b' and '-n' option
appears on the command line
- https://bugzilla.redhat.com/1321620
- libguestfs: error: could not parse integer in version
number: 7"
- https://bugzilla.redhat.com/1321338
- [1.33.16] Compilation Error: Unbound value List.sort_uniq
in v2v.ml line 988, characters 10-24:
- https://bugzilla.redhat.com/1317843
- `virt-builder --update` fails with: "dnf -y --best
upgrade: command exited with an error"
- https://bugzilla.redhat.com/1316479
- v2v cmd cannot exit and "block I/O error in device
'appliance': No space left on device (28)" is printed when specified
"-v -x"
- https://bugzilla.redhat.com/1316041
- virt-rescue fails, but missing error message
- https://bugzilla.redhat.com/1314244
- RFE: virt-p2v log window should process colour escapes and
backspaces
- https://bugzilla.redhat.com/1312254
- virt-v2v -o libvirt doesn't preserve or use correct
<graphics type="vnc|spice">
- https://bugzilla.redhat.com/1309706
- error: internal error: Invalid floppy device name: hdb
- https://bugzilla.redhat.com/1309619
- Wrong warning info "use standard VGA" shows when
converting windows > 7 by virt-v2v
- https://bugzilla.redhat.com/1309580
- OS name of win8.1 x64 guest shows incorrect in rhevm3.6
general info
- https://bugzilla.redhat.com/1308769
- virt-v2v does not copy additional disks to Glance
- https://bugzilla.redhat.com/1306666
- Failure when disk contains an LV with activationskip=y
- https://bugzilla.redhat.com/1296606
- virt-v2v doesn't remove VirtualBox additions correctly
because of file quoting
- https://bugzilla.redhat.com/1293527
- There should be a reminder to avoid user to edit a guest
image by multiple tools at the same time in guestfish man page
- https://bugzilla.redhat.com/1293276
- guestfish can not ll a symbolic link dir or edit a file in
it
- https://bugzilla.redhat.com/1278878
- guestfish should be able to handle LVM thin layouts
- https://bugzilla.redhat.com/1264835
- ppc64le: virt-customize --install fail to detect the guest
arch
- https://bugzilla.redhat.com/1264332
- Test that trimming in virt-v2v doesn't regress
- https://bugzilla.redhat.com/1232192
- Virt-v2v gives an error on a blank disk: part_get_parttype:
unknown signature, of the output: BYT;
- https://bugzilla.redhat.com/1229386
- virt-p2v in non-GUI mode doesn't show any conversion
progress or status
- https://bugzilla.redhat.com/1227599
- P2V invalid password prints unexpected end of file waiting
for command prompt.
- https://bugzilla.redhat.com/1224795
- On Ubuntu, virt-builder --install and --update cannot use
the network
- https://bugzilla.redhat.com/1213324
- virt-v2v: warning: unknown guest operating system: windows
windows 6.3 when converting win8,win8.1,win2012,win2012R2,win10 to
rhev
- https://bugzilla.redhat.com/1203898
- Support inspecting docker images without /etc/fstab
- https://bugzilla.redhat.com/1186935
- libguestfs cannot inspect recent Fedora / RHEL >= 7 when
/usr is a separate partition
- https://bugzilla.redhat.com/1167916
- P2V: invalid conversion server prints unexpected end of
file waiting for password prompt.
- https://bugzilla.redhat.com/1152825
- virt-rescue --selinux can not work well, when enable
selinux in the command line the value of 'getenforce' is still Disabled in
virt-rescue appliance
- https://bugzilla.redhat.com/1150298
- ARM 32 bit on Ubuntu: warning: cast to pointer from integer
of different size [-Wint-to-pointer-cast]
- https://bugzilla.redhat.com/1089100
- NetworkManager avc unlink denied for resolv.conf after
using --selinux-relabel
- https://bugzilla.redhat.com/983969
- RFE: virt-sysprep should be SELinux-aware
- https://bugzilla.redhat.com/855058
- RFE: virt-p2v: display more information about storage
devices
- https://bugzilla.redhat.com/554829
- SELinux handling could be done better.
guestfs-examples(1),
guestfs-faq(1),
guestfs-performance(1),
guestfs-recipes(1),
guestfs-testing(1),
guestfs(3),
guestfish(1),
http://libguestfs.org/
Richard W.M. Jones
Copyright (C) 2009-2020 Red Hat Inc.
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.