guix/gnu/build/image.scm, branch master

system: hurd-boot: Prepare for runsystem in Guile.

2026-05-19T16:34:56+00:00

Fo guile to run, it needs pipe support: without pipe support it aborts at
startup.  Pipe support is currently createn in runsystem by creating a
passive translator

    settrans --create /servers/socket/1 /hurd/pflocal

However, this needs a writable root file-system, and runsystem is started with
a readonly root file-system.

This patch enables running guile early in runsystem, and thus prepares for
replacing the runsystem shell script with a guile program, by embedding the
servers/socket/1 passive translator into the hurd system image using xattr.

* gnu/build/hurd-boot.scm (make-hurd-device-nodes): Change optional root
parameter to keyword #:root.  Add #:hurd keyword parameter.  Use it to
create servers/socket/1 (pipe) and proc passive xattr translators.
* gnu/build/image.scm (initialize-root-partition): Update caller.
* gnu/system/image.scm (with-imported-modules*): Include (ice-9 optargs).
* gnu/system/images/hurd.scm (hurd-initialize-root-partition): Use it to
update caller.
* guix/scripts/system.scm (install): Update caller.

Change-Id: Ib3a672ae78bd969a2a4c0e33db8e38ccf71238ba
Merges: #8609

image: Use `unshare` to map root user for btrfs

2026-01-12T09:56:38+00:00

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 
Merges: #5536

gnu: make-iso9660-image: Do not compress any kernel, compress man pages.

2025-12-22T22:00:40+00:00

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

image: Create directory indexes for ext4 images.

2025-12-03T16:49:40+00:00

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

image: Add support for swap.

2025-11-24T22:22:52+00:00

* 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 
Signed-off-by: Ludovic Courtès

image: Add support for f2fs.

2025-11-24T22:22:51+00:00

* 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 
Signed-off-by: Ludovic Courtès

image: Create zstd-compressed qcow2 images.

2025-04-30T08:14:24+00:00

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

image: Honor parallel job count for the number of qemu-img co-routines used.

2025-04-30T08:14:24+00:00

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

image: Add support for btrfs.

2024-10-14T12:08:43+00:00

* 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

image: Use file system options in make-vfat-image.

2024-10-14T12:08:43+00:00

* gnu/build/image.scm (make-vfat-image): Use file system options.

Change-Id: I791aadd2803d1ef96fc79cf8910a74a0083d2b6e
Signed-off-by: Ludovic Courtès