57 lines
2.0 KiB
Nix
57 lines
2.0 KiB
Nix
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{...}: {
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# Every filesystem on shadow lives here, hand-maintained.
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#
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# hardware.nix is generated with `--no-filesystems` precisely so it never
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# emits fileSystems/swapDevices entries of its own. That keeps regeneration
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# (`nix run .#sync-hardware`) safe: re-running it can never clobber these
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# definitions, nor produce duplicates for whichever data drives happened to
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# be mounted at the time it ran.
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flake.nixosModules.shadowDisks = {...}: let
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# Secondary data drive, addressed by filesystem label.
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#
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# noauto + x-systemd.automount makes systemd generate an .automount unit and
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# mount on first access to the path rather than at boot — the two 2.7T
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# spinners stay parked until something actually touches them. idle-timeout
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# unmounts them again once quiet so they can spin back down.
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#
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# nofail matters even with automount: it stops a missing or dying disk from
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# becoming a failed dependency that drops the boot into emergency mode.
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#
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# On-disk ownership is already ahmza mode 755 on all three, so no uid mapping
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# is needed — ext4 stores ownership in the filesystem and ignores uid=/gid=.
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dataDrive = label: {
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device = "/dev/disk/by-label/${label}";
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fsType = "ext4";
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options = [
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"nofail"
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"noauto"
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"x-systemd.automount"
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"x-systemd.idle-timeout=600"
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"x-systemd.device-timeout=10"
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];
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};
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in {
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fileSystems = {
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# Boot essentials, by UUID. UUIDs rather than labels here on purpose:
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# these two must resolve unambiguously, and a label is only as unique as
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# the last disk someone plugged in.
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"/" = {
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device = "/dev/disk/by-uuid/deff63fc-1738-4cfc-a79c-06e58c78471a";
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fsType = "ext4";
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};
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"/boot" = {
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device = "/dev/disk/by-uuid/5873-AD05";
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fsType = "vfat";
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options = ["fmask=0077" "dmask=0077"];
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};
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"/mnt/dump" = dataDrive "DUMP";
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"/mnt/games" = dataDrive "GAMES";
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"/mnt/bak" = dataDrive "BAK";
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};
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swapDevices = [];
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};
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}
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