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nixos/modules/disko/linode.nix
beatzaplentyandClaude Sonnet 5 a351cbcf80 Give linode-* hosts a real Disko config, simplify auto-install.sh
Linode provisions and sizes /dev/sda (root) and /dev/sdb (swap) itself
as whole, unpartitioned block devices before the OS ever boots.
modules/disko/linode.nix declares them with destroy = false (skips
Disko's wipe stage for these disks entirely) and a bare filesystem/swap
content type matching that existing layout, so re-running it against an
already-provisioned disk only mkfs/mkswaps if blkid shows it isn't
formatted yet -- never repartitions or destroys data.

With every host reachable through the installer menu now carrying a
Disko config, auto-install.sh no longer needs to probe the flake and
branch between `disko --mode destroy,format,mount` and a bind-mount
fallback -- it just always runs Disko.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01La55Nsss8jZ7ZuzUV9mfot
2026-07-20 08:04:34 +10:00

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Nix

_:
{
# Linode provisions and sizes these disks itself (via the Linode
# dashboard/API) before the OS ever boots, and presents them as whole,
# unpartitioned block devices — /dev/sda is the root filesystem directly,
# /dev/sdb is swap directly, no partition table on either. Nothing here
# should ever repartition or resize them:
# - `destroy = false` skips each disk entirely during disko's destroy
# stage (see disko's disk.destroy option) — no wipefs, ever.
# - the filesystem content type's own create step only runs mkfs if the
# device isn't already formatted (checked via `blkid`), so re-running
# this against an already-provisioned Linode disk is a no-op.
disko.devices.disk = {
main = {
device = "/dev/sda";
destroy = false;
content = {
type = "filesystem";
format = "ext4";
mountpoint = "/";
};
};
swap = {
device = "/dev/sdb";
destroy = false;
content = {
type = "swap";
};
};
};
}