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2026-01-12image: Use `unshare` to map root user for btrfsRyan Sundberg
The current version of `mkfs.btrfs` has a regression when combined with `fakeroot` where it does not detect the faked root uid/gid of files when building the filesystem. This produces partition images with `/` owned by the guixbuild user when it should be owned by root. Using `unshare` rather than `fakeroot` resolves this by doing the uid mapping at the kernel level rather than overloading the `stat` function. An equivalent issue was [reported and patched in NixOS](https://github.com/NixOS/nixpkgs/pull/434122) * gnu/build/image.scm (system-disk-image): Import `util-linux` instead of `fakeroot`. * gnu/system/image.scm (make-btrfs-image): Use `unshare --map-root-user` Change-Id: Id4eeaf510f3ec5f4a23b4d700a73e2cf46da40b1 Signed-off-by: Ludovic Courtès <ludo@gnu.org> Merges: #5536
2025-12-22gnu: make-iso9660-image: Do not compress any kernel, compress man pages.Rutherther
Because the linux image is called differently based on the architectures, see system-linu/-image-file-name from gnu/system.scm, the kernel image on aarch64, mips and armhf has still been compressed. This means that grub cannot boot. Man pages have moved from gz to zst, so compress them as well. * gnu/build/image.scm (make-iso9660-image): Do not compress Image, vmlinuz and zImage; Compress all man pages. Change-Id: I68b35f383c84ff231865d580aa9e79d9fd88ace1 Signed-off-by: Rutherther <rutherther@ditigal.xyz>
2025-12-03image: Create directory indexes for ext4 images.Ludovic Courtès
Fixes a bug whereby the store in ext4 partitions created with ‘guix system image’ would be limited to 65,000 sub-directories. * gnu/build/image.scm (make-ext-image): Invoke “e2fsck -fDy”. Fixes: guix/guix#4396 Change-Id: I02d3470fac8bdd8971083be8fce192b72bf6510c
2025-11-24image: Add support for swap.Denis 'GNUtoo' Carikli
* gnu/build/image.scm (make-swap-image): New variable. (make-partition-image): Support swap. * gnu/system/image.scm (system-disk-image): Support swap. * doc/guix.texi: (partition Reference): Support swap. Change-Id: I1c201e6aa5dd207d53e5732617910860ee894990 Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org> Signed-off-by: Ludovic Courtès <ludo@gnu.org>
2025-11-24image: Add support for f2fs.Denis 'GNUtoo' Carikli
* gnu/build/image.scm (make-f2fs-image): New variable. (make-partition-image): Support f2fs. (estimate-partition-size): Add optional margin. * gnu/system/image.scm (system-disk-image): Support f2fs. * doc/guix.texi: (partition Reference): Support f2fs. Change-Id: Ia7fc4483c3cc1af5f34fac86a529a90a1bd7c2c6 Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org> Signed-off-by: Ludovic Courtès <ludo@gnu.org>
2025-04-30image: Create zstd-compressed qcow2 images.Maxim Cournoyer
This should be about twice as fast as the default zlib compressor used for qcow2, and potentially multi-thread aware given some improvements to qemu-img in the future (zstd supports its but it's not currently used by QEMU). * gnu/build/image.scm (convert-disk-image): Specify 'compression_type=zstd' option. Change-Id: Ie9c66f0c13e789ec863c95a5e549f035b6a17bf9
2025-04-30image: Honor parallel job count for the number of qemu-img co-routines used.Maxim Cournoyer
This doesn't seem to change anything currently (the default is 8). Perhaps useful in the future, for example if the compressor used by qemu-img starts honoring it. * gnu/build/image.scm (convert-disk-image): Specify the '-m' option. Change-Id: Ia288c85af8a0621d61cf6b9f0d3f73f5a3026d66
2024-10-14image: Add support for btrfs.Roman Scherer
* gnu/build/image.scm (make-btrfs-image): New variable. * gnu/system/image.scm (system-disk-image): Support btrfs. Change-Id: I80a5b52ec478ce5927d6208e324cbb70282c647a Signed-off-by: Ludovic Courtès <ludo@gnu.org>
2024-10-14image: Use file system options in make-vfat-image.Roman Scherer
* gnu/build/image.scm (make-vfat-image): Use file system options. Change-Id: I791aadd2803d1ef96fc79cf8910a74a0083d2b6e Signed-off-by: Ludovic Courtès <ludo@gnu.org>
2024-08-31gnu: image: Reformat comments.Tobias Geerinckx-Rice
I wrote these to fit on their lines, so the pointless widows bug me. * gnu/build/image.scm (make-iso9660-image): M-q comments.
2023-06-14gnu: image: Add support for unformatted partitions.Efraim Flashner
* gnu/build/image.scm (make-unformatted-image): New procedure. (make-partition-image): Add support for unformatted partition. * gnu/system/image.scm (system-disk-image)[partition->gpt-type]: Add case for using unformatted partition uuid.
2022-12-12image: Use 512 byte blocks for EFI partitions.Efraim Flashner
Addresses <https://issues.guix.gnu.org/59695>. * gnu/build/image.scm (make-vfat-image): When creating a fat filesystem for UEFI bootable partition use 512 byte blocks.
2022-08-30build: image: Make partition uuid optional.Mathieu Othacehe
The uuid field of <partition> defaults to #false. This should be reflected when creating the partition. * gnu/build/image.scm (make-ext-image): Make it optional.
2022-08-30build: image: Remove unused variable.Mathieu Othacehe
* gnu/build/image.scm (make-ext-image): Remove the unused flags variable.
2022-06-24image: Add support for 32bit UEFI.Denis 'GNUtoo' Carikli
* gnu/bootloader/grub.scm (grub-efi32-bootloader): New variable. (install-grub-efi32): New variable. * gnu/build/bootloader.scm (install-efi): Add a 'targets' keyword argument. (install-efi-loader): Likewise. * gnu/build/image.scm (initialize-efi32-partition): New procedure. * gnu/packages/bootloaders.scm (grub-efi32): New variable. * gnu/system/image.scm (esp32-partition): New variable (efi32-disk-image): New variable. (efi32-raw-image-type): New variable. (system-disk-image)[partition-image]: Set '#:grub-efi32' when calling the partition initializer. Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
2022-05-31image: Add fat32 support.Pavel Shlyak
* gnu/build/image.scm (make-vfat-image): Pass fs-bits as an argument and force 1kb logical sector size only if "ESP" flag is set. (make-partition-image): Add "fat32" partition type, support explicit "fat16" type with vfat alias. * gnu/system/image.scm (partition->dos-type partition): Return file system IDs for "fat16" and "fat32" partitions. (partition->gpt-type partition): Ditto. Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
2022-05-23image: Add bootable flag support.Pavel Shlyak
* gnu/build/image.scm (sexp->partition): Add flags support. * gnu/system/image.scm (partition->gexp): Ditto. (system-disk-image): Set the genimage bootable flag if it is part of the partition flags. Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
2022-02-07build: image: Account for fixed-size file system structures.Tobias Geerinckx-Rice
Workaround for <https://issues.guix.gnu.org/53194>. * gnu/build/image.scm (estimate-partition-size): Enforce a 1-MiB minimum. Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
2021-12-23build: image: Add optional closure copy support.Mathieu Othacehe
* gnu/build/image.scm (initialize-root-partition): Add a closure-copy? argument and honor it.
2021-08-15Update copyright/name notices for Christine Lemmer-Webber.Christopher Lemmer Webber
* doc/guix-cookbook.texi: Update copyright/name for Christine Lemmer-Webber. * gnu/build/image.scm: Likewise. * gnu/build/vm.scm: Likewise. * gnu/packages/admin.scm: Likewise. * gnu/packages/assembly.scm: Likewise. * gnu/packages/audio.scm: Likewise. * gnu/packages/backup.scm: Likewise. * gnu/packages/check.scm: Likewise. * gnu/packages/databases.scm: Likewise. * gnu/packages/emacs-xyz.scm: Likewise. * gnu/packages/finance.scm: Likewise. * gnu/packages/gnupg.scm: Likewise. * gnu/packages/guile-xyz.scm: Likewise. * gnu/packages/guile.scm: Likewise. * gnu/packages/haskell-xyz.scm: Likewise. * gnu/packages/linux.scm: Likewise. * gnu/packages/mail.scm: Likewise. * gnu/packages/password-utils.scm: Likewise. * gnu/packages/perl.scm: Likewise. * gnu/packages/python-web.scm: Likewise. * gnu/packages/python-xyz.scm: Likewise. * gnu/packages/python.scm: Likewise. * gnu/packages/sphinx.scm: Likewise. * gnu/packages/ssh.scm: Likewise. * gnu/packages/xdisorg.scm: Likewise. * gnu/services/networking.scm: Likewise. * gnu/system/vm.scm: Likewise.
2021-04-21image: Fix spelling of "evaluate"Vagrant Cascadian
* gnu/build/image.scm: Fix typo.
2020-12-15database: Remove #:deduplicate? from 'register-items'.Ludovic Courtès
It is now up to the caller to deduplicate store contents. * guix/store/database.scm (register-items): Remove #:deduplicate? parameter and call to 'deduplicate'. (register-path): Call 'deduplicate' when #:deduplicate? is true. * gnu/build/image.scm (register-closure): Adjust call accordingly. * gnu/build/vm.scm (register-closure): Likewise. * guix/nar.scm (finalize-store-file): Likewise. * guix/scripts/pack.scm (store-database): Likewise.
2020-12-15image: 'register-closure' leaves it up to the caller to deduplicate.Ludovic Courtès
* gnu/build/image.scm (register-closure): Remove #:deduplicate? parameter and pass #:deduplicate? #f to 'register-items'. (initialize-root-partition): Adjust accordingly. * gnu/build/vm.scm (register-closure, root-partition-initializer): Likewise.
2020-12-15store-copy: 'populate-store' can optionally deduplicate files.Ludovic Courtès
Until now deduplication was performed as an additional pass after copying files, which involve re-traversing all the files that had just been copied. * guix/store/deduplication.scm (copy-file/deduplicate): New procedure. * tests/store-deduplication.scm ("copy-file/deduplicate"): New test. * guix/build/store-copy.scm (populate-store): Add #:deduplicate? parameter and honor it. * tests/gexp.scm ("gexp->derivation, store copy"): Pass #:deduplicate? #f to 'populate-store'. * gnu/build/image.scm (initialize-root-partition): Pass #:deduplicate? to 'populate-store'. Pass #:deduplicate? #f to 'register-closure'. * gnu/build/vm.scm (root-partition-initializer): Likewise. * gnu/build/install.scm (populate-single-profile-directory): Pass #:deduplicate? #f to 'populate-store'. * gnu/build/linux-initrd.scm (build-initrd): Likewise. * guix/scripts/pack.scm (self-contained-tarball)[import-module?]: New procedure. [build]: Pass it as an argument to 'source-module-closure'. * guix/scripts/pack.scm (squashfs-image)[build]: Wrap in 'with-extensions'. * gnu/system/linux-initrd.scm (expression->initrd)[import-module?]: New procedure. [builder]: Pass it to 'source-module-closure'. * gnu/system/install.scm (cow-store-service-type)[import-module?]: New procedure. Pass it to 'source-module-closure'.
2020-12-15database: Remove #:reset-timestamps? from 'register-items'.Ludovic Courtès
The assumption now is that the caller took care of resetting timestamps and permissions. * guix/store/database.scm (register-items): Remove #:reset-timestamps? parameter and the call to 'reset-timestamps'. (register-path): Adjust accordingly and add call to 'reset-timestamps'. * gnu/build/image.scm (register-closure): Remove #:reset-timestamps? parameter to 'register-items'. * gnu/build/vm.scm (register-closure): Likewise. * guix/nar.scm (finalize-store-file): Adjust accordingly. * guix/scripts/pack.scm (store-database)[build]: Likewise.
2020-12-15image: 'register-closure' assumes already-reset timestamps.Ludovic Courtès
* gnu/build/image.scm (register-closure): Remove #:reset-timestamps? parameter. Pass #:reset-timestamps? #f to 'register-items'. (initialize-root-partition): Adjust accordingly. * gnu/build/vm.scm (register-closure, root-partition-initializer): Likewise.
2020-12-15store-copy: 'populate-store' resets timestamps.Ludovic Courtès
Until now, 'populate-store' would reset permissions but not timestamps, so callers would resort to going through an extra directory traversal to reset timestamps. * guix/build/store-copy.scm (reset-permissions): Remove. (copy-recursively): New procedure. (populate-store): Pass #:keep-permissions? to 'copy-recursively'. Remove call to 'reset-permissions'. * tests/gexp.scm ("gexp->derivation, store copy"): In BUILD-DRV, check whether 'populate-store' canonicalizes permissions and timestamps. * gnu/build/image.scm (initialize-root-partition): Pass #:reset-timestamps? #f to 'register-closure'. * gnu/build/vm.scm (root-partition-initializer): Likewise.
2020-11-05image: Error out when passed an unsupported partition type.Ludovic Courtès
* gnu/build/image.scm (make-partition-image): Use 'raise' instead of 'format' when TYPE is not supported. (convert-disk-image): Remove unneeded 'begin'.
2020-09-29image: Add support for compressed-qcow2 format.Mathieu Othacehe
* gnu/build/image.scm (convert-disk-image): New procedure. (genimage): Remove target argument. * gnu/system/image.scm (system-disk-image): Add support for 'compressed-qcow2 image format. Call "convert-disk-image" to apply image conversions on the final image. Add "qemu-minimal" to the build inputs. (system-image): Also add support for 'compressed-qcow2.
2020-07-11image: Do not set journal_model=WAL for the Hurd.Jan (janneke) Nieuwenhuizen
This fixes <https://bugs.gnu.org/42151>. * gnu/system/images/hurd.scm (hurd-initialize-root-partition): Use #:wal-mode #f in call to ... * gnu/build/image.scm (initialize-root-partition): ... this, add #:wal-mode? parameter, pass it to ... (register-closure): ... this, add #:wal-mode? parameter, pass it to ... * guix/store/database.scm (with-database): ... this, add #:wal-mode? parameter, pass it to ... (call-with-database): ... this, add #:wal-mode? parameter; when set to #f, do not set journal_model=WAL.
2020-06-22system: image: Remove "image-root" when building raw disk-images.Mathieu Othacehe
The "image-root" derivation output is used as a temporary directory that is passed to mke2fs and mkdosfs later on. By merging the creation of this directory and the production of partition images, we can get rid of the derivation. As mke2fs and mkdosfs are not able to override file permissions, call those commands with fakeroot. This way, all the image files will be owned by root, even if image generation is done in an unprivilegded context. * gnu/system/image.scm (system-disk-image): Merge "image-root" and "iso9660-image" derivations so that we spare an extra derivation. Also add "fakeroot" and its runtime dependencies to the inputs. * gnu/build/image.scm (make-ext-image, make-vfat-image): Make sure that mke2fs and mkdosfs are respectively called by fakeroot.
2020-06-18database: 'register-items' takes an open database.Ludovic Courtès
* guix/store/database.scm (store-database-directory) (store-database-file): New procedures. (call-with-database): Add call to 'mkdir-p'. (register-items): Add 'db' parameter and remove #:state-directory and #:schema. (register-path): Use 'store-database-file' and 'with-database', and parameterize SQL-SCHEMA. * gnu/build/image.scm (register-closure): Likewise. * gnu/build/vm.scm (register-closure): Likewise. * guix/scripts/pack.scm (store-database)[build]: Likewise.
2020-06-09build: image: Do not call make-essential-device-nodes by default.Mathieu Othacehe
Calling "mknod" without root permissions fails. Plus those device nodes do not appear to be needed to boot. * gnu/build/image.scm (initialize-root-partition): Do not use make-essential-device-nodes as default make-device-nodes procedure.
2020-06-08image: Add Hurd support.Mathieu Othacehe
* gnu/system/image.scm (hurd-disk-image): New exported variable, (root-offset, root-label): new variables, (esp-partition, root-partition): adapt accordingly, (find-image): add Hurd support.
2020-05-29build: image: Fix initialize-efi-partition docstring.Mathieu Othacehe
* gnu/build/image.scm (initialize-efi-partition): Turn BOOTLOADER-PACKAGE into GRUB-EFI.
2020-05-29image: Use grub-efi to install the EFI bootloader.Mathieu Othacehe
* gnu/build/image.scm (initialize-efi-partition): Rename bootloader-package argument to grub-efi. * gnu/system/image.scm (system-disk-image): Adapt accordingly to pass grub-efi package.
2020-05-29image: Add bootloader installation support.Mathieu Othacehe
* gnu/build/image.scm (initialize-root-partition): Add bootloader-package and bootloader-installer arguments. Run the bootloader-installer if defined. * gnu/system/image.scm (system-disk-image): Adapt the partition initializer call accordingly.
2020-05-26image: Add partition file-system options support.Mathieu Othacehe
* gnu/image.scm (<partition>)[file-system-options]: New field, (partition-file-system-options): new exported procedure. * gnu/system/image.scm (partition->gexp): Adapt accordingly. * gnu/build/image.scm (sexp->partition): Also adapt accordingly, (make-ext-image): and pass file-system options to mke2fs.
2020-05-26build: image: Add support for EXT2 and EXT3 file-systems.Mathieu Othacehe
* gnu/build/image.scm (make-ext4-image): Rename to ... (make-ext-image): ... it, and pass the file-system type to mke2fs, (make-partition-image): Adapt to call "make-ext-image" if the partition file-system is prefixed by "ext".
2020-05-05image: Add a new API.Mathieu Othacehe
Raw disk-images and ISO9660 images are created in a Qemu virtual machine. This is quite fragile, very slow, and almost unusable without KVM. For all these reasons, add support for host image generation. This implies the use new image generation mechanisms. - Raw disk images: images of partitions are created using tools such as mke2fs and mkdosfs depending on the partition file-system type. The partition images are then assembled into a final image using genimage. - ISO9660 images: the ISO root directory is populated within the store. GNU xorriso is then called on that directory, in the exact same way as this is done in (gnu build vm) module. Those mechanisms are built upon the new (gnu image) module. * gnu/image.scm: New file. * gnu/system/image.scm: New file. * gnu/build/image: New file. * gnu/local.mk: Add them. * gnu/system/vm.scm (system-disk-image): Rename to system-disk-image-in-vm. * gnu/ci.scm (qemu-jobs): Adapt to new API. * gnu/tests/install.scm (run-install): Ditto. * guix/scripts/system.scm (system-derivation-for-action): Ditto.
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