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https://github.com/nix-community/disko
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139 lines
4.8 KiB
Markdown
139 lines
4.8 KiB
Markdown
# disko - Declarative disk partitioning
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<img title="" src="./docs/logo.png" alt="Project logo" width="274">
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[Documentation Index](./docs/INDEX.md)
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NixOS is a Linux distribution where everything is described as code, with one
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exception: during installation, the disk partitioning and formatting are manual
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steps. **disko** aims to correct this sad 🤡 omission.
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This is especially useful for unattended installations, re-installation after a
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system crash or for setting up more than one identical server.
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## Overview
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**disko** can either be used after booting from a NixOS installer, or in
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conjunction with [nixos-anywhere](https://github.com/numtide/nixos-anywhere) if
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you're installing remotely.
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Before using **disko**, the specifications of the disks, partitions, type of
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formatting and the mount points must be defined in a Nix configuration. You can
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find [examples](./example) of typical configurations in the Nix community
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repository, and use one of these as the basis of your own configuration.
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You can keep your configuration and re-use it for other installations, or for a
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system rebuild.
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**disko** is flexible, in that it supports most of the common formatting and
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partitioning options, including:
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- Disk layouts: GPT, MBR, and mixed.
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- Partition tools: LVM, mdadm, LUKS, and more.
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- Filesystems: ext4, btrfs, ZFS, bcachefs, tmpfs, and others.
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It can work with these in various configurations and orders, and supports
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recursive layouts.
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## How to use disko
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Disko doesn't require installation: it can be run directly from nix-community
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repository. The [Quickstart Guide](./docs/quickstart.md) documents how to run
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Disko in its simplest form when installing NixOS. Alternatively, you can also
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use the new [disko-install](./docs/disko-install.md) tool, which combines `disko` and `nixos-install` into one step.
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For information on other use cases, including upgrading from an older version of
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**disko**, using **disko** without NixOS and downloading the module, see the
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[How To Guide](./docs/HowTo.md)
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For more detailed options, such as command line switches, see the
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[Reference Guide](./docs/reference.md)
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To access sample configurations for commonly-used disk layouts, refer to the
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[examples](./example) provided.
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Disko can be also used to create [disk images](./docs/disko-images.md).
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## Sample Configuration and CLI command
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A simple disko configuration may look like this:
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```nix
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{
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disko.devices = {
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disk = {
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my-disk = {
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device = "/dev/sda";
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type = "disk";
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content = {
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type = "gpt";
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partitions = {
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ESP = {
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type = "EF00";
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size = "500M";
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content = {
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type = "filesystem";
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format = "vfat";
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mountpoint = "/boot";
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};
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};
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root = {
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size = "100%";
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content = {
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type = "filesystem";
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format = "ext4";
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mountpoint = "/";
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};
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};
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};
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};
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};
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};
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};
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}
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```
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If you'd saved this configuration in /tmp/disk-config.nix, and wanted to create
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a disk named /dev/sda, you would run the following command to partition, format
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and mount the disk.
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```console
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sudo nix --experimental-features "nix-command flakes" run github:nix-community/disko -- --mode disko /tmp/disk-config.nix
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```
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## Related Tools
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This tool is used by
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[nixos-anywhere](https://github.com/numtide/nixos-anywhere), which carries out a
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fully-automated remote install of NixOS.
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We also acknowledge https://github.com/NixOS/nixpart, the conceptual ancestor of
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this project.
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## Licensing and Contribution details
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This software is provided free under the
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[MIT Licence](https://opensource.org/licenses/MIT).
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## Get in touch
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We have a public matrix channel at
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[disko](https://matrix.to/#/#disko:nixos.org).
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---
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This project is supported by [Numtide](https://numtide.com/).
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We are a team of independent freelancers that love open source. We help our
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customers make their project lifecycles more efficient by:
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- Providing and supporting useful tools such as this one
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- Building and deploying infrastructure, and offering dedicated DevOps support
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- Building their in-house Nix skills, and integrating Nix with their workflows
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- Developing additional features and tools
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- Carrying out custom research and development.
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[Contact us](https://numtide.com/contact) if you have a project in mind, or if
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you need help with any of our supported tools, including this one. We'd love to
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hear from you.
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