Commit Graph

9 Commits

Author SHA1 Message Date
Alexander Krupenkin
2f0c495c31
lib/make-ext4-fs: more efficient store maker 2018-12-24 23:21:15 +03:00
Samuel Dionne-Riel
61bdaad9a9 sd-image: Slims the ext4 filesystem even more.
This is to try and squeeze more lost space from the image, so that hydra
starts building it again.

The fsck previous to the resize2fs is required so resize2fs works.

The one afterwards is a sanity check.

Using `-M` from resize2fs will not give much saved space due to a known
(in the manual) issue.

```
[samueldr@aarch64:~/nixpkgs]$ ls -lh result-*/*/*.img
-r--r--r-- 1 root root 2.2G Jan  1  1970 result-original/sd-image/nixos-sd-image-18.09.git.a7fd431-aarch64-linux.img
-r--r--r-- 1 root root 2.1G Jan  1  1970 result-M/sd-image/nixos-sd-image-18.09.git.a7fd431-aarch64-linux.img
-r--r--r-- 1 root root 1.9G Jan  1  1970 result-slimmed/sd-image/nixos-sd-image-18.09.git.a7fd431-aarch64-linux.img
```

```
[samueldr@aarch64:~/nixpkgs]$ nix path-info -S ./result-original
/nix/store/c8k9n78gylx293rjh762fr05a069kxp2-nixos-sd-image-18.09.git.a7fd431-aarch64-linux.img   3844125000

[samueldr@aarch64:~/nixpkgs]$ nix path-info -S ./result-slimmed
/nix/store/962238skj5mnzhrsmjy23dyzmxk77sp4-nixos-sd-image-18.09.git.a7fd431-aarch64-linux.img   3447473208
```
2018-11-30 19:11:49 -05:00
Will Fancher
47d2f92a05 make-ext4-fs: Fix cross compiling 2018-08-21 14:05:23 +03:00
Andrew Dunham
d7bfd04301 sdImage: make partition ID/UUID configurable 2018-07-12 17:02:03 +03:00
Tuomas Tynkkynen
bc828721ed nixos/lib/make-ext4-fs: Add a sanity check
I ended up with a corrupted image with the debugfs contraption once, and
given I couldn't reproduce the problem I suppose that happens if the
filesystem of the builder runs out of space.

At least in this instance fsck could detect it, so let's add it as a
sanity check.
2018-05-05 19:30:54 +03:00
Tuomas Tynkkynen
487be791d7 nixos/make-ext4-fs: Use closureInfo
exportReferencesGraph is deprecated and doesn't have the generated
initial Nix database contain the SHA256 of the contents of the store
paths, which breaks various things under Nix 2.0.
2018-04-10 00:31:36 +03:00
Ben Gamari
a2215da9a1 make-ext4-fs: Dependencies are nativeBuildInputs 2018-01-09 11:25:19 -05:00
Tuomas Tynkkynen
1d72474df7 make-ext4-fs: Fix modification timestamps in image
Use '-f' to make timestamp calls to always return the same time. Also
Nix uses the timestamp of '1' instead of epoch directly.
2017-07-29 22:03:43 +03:00
Tuomas Tynkkynen
df86813d97 nixos: Add derivations for SD card installation images on ARM
The resulting image can be copied to a SD card with `dd` and is directly
bootable by a suitably configured U-Boot. Though depending on the board, some
extra steps are required for copying U-Boot itself to the SD card.

Inside the image is a partition table, with a FAT32 /boot and a normal
writable EXT4 rootfs. It's possible to directly reuse the SD image's
partition layout and "install" NixOS on the same SD card by replacing
the default configuration.nix and nixos-rebuild, and actually is the
preferred way to use these images. To assist in this installation
method, the boot scripts on the image automatically resize the rootfs
partition to fit the SD card on the first boot.

The SD images come in two flavors; one for the ARMv6 Raspberry Pi,
and one multiplatform image for all the boards supported by the
mainline kernel's multi_v7_defconfig config target. At the moment, these
have been tested on:
    - Raspberry Pi Model B (512MB model)
    - NVIDIA Jetson TK1
    - Linksprite pcDuino3 Nano

To build, run:

nix-build '<nixpkgs/nixos>' -A config.system.build.sdImage \
    -I nixos-config='<nixpkgs/nixos/modules/installer/cd-dvd/sd-image-armv7l-multiplatform.nix>'
2015-07-26 00:31:20 +03:00