guestfs-release-notes-1.26(1) Virtualization Support (NAME) guestfs-release-notes - libguestfs LIBGUESTFS 1.26 (RELEASE NOTES FOR LIBGUESTFS 1.26) / (1.24.0) . git ChangeLog tarball . (New features) (Tools) virt-customize(1) . . virt-builder(1) virt-sysprep(1) virt-customize . virt-diff(1) . (snapshot) . virt-builder(1) . . . xzcat . Virt-builder . virt-builder . (metadata) . SELinux . . . (Pino Toscano) virt-sparsify(1) --in-place . ( ) (sparsify) . ( Paolo Bonzini) virt-sysprep(1) (scrub) . . (log) . Red Hat Subscription Manager . . (Wanlong Gao, Pino Toscano) virt-win-reg(1) URI . virt-format(1) . guestfish(1) ">" . Guestfish ( ) . (Pino Toscano) virt-make-fs(1) C . (Language bindings) OCaml "Guestfs.Errno" "Guestfs.last_errno" . PHP . (Pino Toscano) (Inspection) (Inspection) (live images) . (Architectures) ARMv7 ( ) KVM . Aarch64 ( ARM) appliance . PPC64 ..SS " (Security)" btrfs libguestfs ( libguestfs ) btrfs . (NULL pointer dereference) (denial of service) . d70ceb4cbea165c960710576efac5a5716055486 . libguestfs >= 1.26.0 >= 1.24.6 >= 1.22.8 RHEL >= 7.0 . libguestfs . root root . /dev/urandom ( ). (modulo bias) . . ( Edwin Torok ) (API) GUID API . (Pino Toscano) (New APIs) "guestfs_add_drive_opts": "discard" "discard" discard/trim . API "guestfs_fstrim" (sparse) ( thin-provisioned) . "guestfs_add_domain": : "cachemode" "discard" . "guestfs_blkdiscard" (Discard) guestfs. "discard" (sparse) . "guestfs_blkdiscardzeroes" (discarded) . "guestfs_compare_*" "guestfs_copy_*" (struct) API libguestfs "guestfs_compare_*" "guestfs_copy_*" . "guestfs_copy_attributes" ( xattrs ) . (Pino Toscano) "guestfs_disk_create" API . qemu-img(1) . "guestfs_get_backend_settings" "guestfs_set_backend_settings" (backend) ( "LIBGUESTFS_BACKEND_SETTINGS" ). TCG qemu : export LIBGUESTFS_BACKEND=direct export LIBGUESTFS_BACKEND_SETTINGS=force_tcg "guestfs_part_get_name" ( GPT). (Build changes) libguestfs 1.26 : supermin >= 5 Supermin libguestfs . flex, bison Virt-builder . xz ( ) . (Internals) PO . (Pino Toscano) --insert --verbatim "podwrapper" . libguestfs qemu -enable-fips FIPS qemu . "./configure --without-qemu" . [COW] ( ) API (".create_cow_overlay") . libvirt C XML . . ChangeLog . "git log" . (Appliance) : o libguestfs LVM . o libguestfs /proc/sys/kernel/hotplug . "CONFIG_UEVENT_HELPER_PATH=""" LVM ( libguestfs). (Peter Rajnoha) libguestfs ocamlc(1) ocamlopt(1) . (Hilko Bengen, Olaf Hering) "./configure --disable-daemon --enable-appliance" . . configure . packagelist "cpp" "m4" ..SS " (Bugs fixed)" https://bugzilla.redhat.com/1073906 java inspect_list_applications2 java.lang.ArrayIndexOutOfBoundsException : https://bugzilla.redhat.com/1063374 [RFE] clean unregister subscription manager sysprep https://bugzilla.redhat.com/1060404 virt-resize GPT https://bugzilla.redhat.com/1057504 mount-local (root) https://bugzilla.redhat.com/1056290 virt-sparsify https://bugzilla.redhat.com/1055452 libguestfs: error: invalid backend: appliance https://bugzilla.redhat.com/1054761 guestfs_pvs "unknown device" https://bugzilla.redhat.com/1053847 / https://bugzilla.redhat.com/1046509 ruby-libguestfs Guestfs::Guestfs.new "expecting 0 or 1 arguments" https://bugzilla.redhat.com/1045450 cirros 0.3.1 https://bugzilla.redhat.com/1045033 LIBVIRT_DEFAULT_URI=qemu:///system libguestfs https://bugzilla.redhat.com/1044585 virt-builder ( --install) resolv.conf nameserver 127.0.0.1 https://bugzilla.redhat.com/1044014 SSSD libvirt https://bugzilla.redhat.com/1039995 virt-make-fs fat/vfat : Device partition expected, not making filesystem on entire device '/dev/sda' (use -I to override) https://bugzilla.redhat.com/1039540 (logfiles) virt-sysprep https://bugzilla.redhat.com/1033207 (RFE): libguestfs Free4NAS https://bugzilla.redhat.com/1028660 (RFE): virt-sysprep/virt-builder https://bugzilla.redhat.com/1026688 libguestfs libvirt ceph: rbd: image name must begin with a '/' https://bugzilla.redhat.com/1022431 virt-builder $HOME/.cache https://bugzilla.redhat.com/1022184 libguestfs: jar https://bugzilla.redhat.com/1020806 LVM libguestfs Debian/Ubuntu https://bugzilla.redhat.com/1008417 part-set-gpt-type https://bugzilla.redhat.com/953907 virt-sysprep (hostname) Debian/Ubuntu https://bugzilla.redhat.com/923355 guestfish "\n" https://bugzilla.redhat.com/660687 guestmount: "touch" : touch: setting times of `timestamp': Invalid argument https://bugzilla.redhat.com/593511 [RFE] https://bugzilla.redhat.com/563450 list-devices (SEE ALSO) guestfs-examples(1), guestfs-faq(1), guestfs-performance(1), guestfs-recipes(1), guestfs-testing(1), guestfs(3), guestfish(1), http://libguestfs.org (AUTHORS) Richard W.M. Jones (COPYRIGHT) Copyright (C) 2009-2025 Red Hat Inc. (LICENSE) << >> (GNU General Public License) << >> ( ) . . << >> . : Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. (BUGS) libguestfs : https://bugzilla.redhat.com/buglist.cgi?component=libguestfs&product=Virtualization+Tools libguestfs : https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Virtualization+Tools : o libguestfs. o libguestfs ( ). o . o libguestfs-test-tool(1) . libguestfs-1.60.1 2026-07-14 guestfs-release-notes-1.26(1)