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Add support for persistent disks in the hydra iso.

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This commit is contained in:
Tom Alexander
2025-03-27 20:39:19 -04:00
parent 2b20ab5123
commit 83de1e3708
3 changed files with 105 additions and 5 deletions
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77
nix/configuration/hosts/hydra/vm_disk.nix Normal file
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@@ -0,0 +1,77 @@
{
config,
lib,
pkgs,
...
}:
{
imports = [ ];
options.me = {
vm_disk.enable = lib.mkOption {
type = lib.types.bool;
default = false;
example = true;
description = "Whether we want to mount the local disk for persistent storage.";
};
};
config = lib.mkIf config.me.vm_disk.enable (
lib.mkMerge [
{
# Mount the local disk
fileSystems = {
"/.disk" = lib.mkForce {
device = "/dev/nvme0n1p1";
fsType = "ext4";
options = [
"noatime"
"discard"
];
neededForBoot = true;
};
"/persist" = {
fsType = "none";
device = "/.disk/persist";
options = [
"bind"
"rw"
];
depends = [
"/.disk/persist"
];
};
"/state" = {
fsType = "none";
device = "/.disk/state";
options = [
"bind"
"rw"
];
depends = [
"/.disk/state"
];
};
"/nix/store" = lib.mkForce {
fsType = "overlay";
device = "overlay";
options = [
"lowerdir=/nix/.ro-store"
"upperdir=/.disk/persist/store"
"workdir=/.disk/state/work"
];
depends = [
"/nix/.ro-store"
"/.disk/persist/store"
"/.disk/state/work"
];
};
};
}
]
);
}