51 lines
2.2 KiB
Nix
51 lines
2.2 KiB
Nix
{ lib, pkgs, ... }:
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{
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boot.initrd.supportedFilesystems = [ "ext4" "btrfs" "ext2" "ext3" "vfat" ];
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# useful emergency utils
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boot.initrd.extraUtilsCommands = ''
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copy_bin_and_libs ${pkgs.btrfs-progs}/bin/btrfstune
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copy_bin_and_libs ${pkgs.util-linux}/bin/{cfdisk,lsblk,lscpu}
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copy_bin_and_libs ${pkgs.gptfdisk}/bin/{cgdisk,gdisk}
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copy_bin_and_libs ${pkgs.smartmontools}/bin/smartctl
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copy_bin_and_libs ${pkgs.e2fsprogs}/bin/resize2fs
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'' + lib.optionalString pkgs.stdenv.hostPlatform.isx86_64 ''
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copy_bin_and_libs ${pkgs.nvme-cli}/bin/nvme # doesn't cross compile
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'';
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boot.kernelParams = [
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"boot.shell_on_fail"
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#v experimental full pre-emption for hopefully better call/audio latency on moby.
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# also toggleable at runtime via /sys/kernel/debug/sched/preempt
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# defaults to preempt=voluntary
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# "preempt=full"
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];
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# other kernelParams:
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# "boot.trace"
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# "systemd.log_level=debug"
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# "systemd.log_target=console"
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# moby has to run recent kernels (defined elsewhere).
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# meanwhile, kernel variation plays some minor role in things like sandboxing (landlock) and capabilities.
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# simpler to keep near the latest kernel on all devices,
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# and also makes certain that any weird system-level bugs i see aren't likely to be stale kernel bugs.
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# servo needs zfs though, which doesn't support every kernel.
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boot.kernelPackages = lib.mkDefault pkgs.zfs.latestCompatibleLinuxPackages;
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# hack in the `boot.shell_on_fail` arg since that doesn't always seem to work.
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boot.initrd.preFailCommands = "allowShell=1";
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# default: 4 (warn). 7 is debug
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boot.consoleLogLevel = 7;
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boot.loader.grub.enable = lib.mkDefault false;
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boot.loader.generic-extlinux-compatible.enable = lib.mkDefault true;
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# non-free firmware
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hardware.enableRedistributableFirmware = true;
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# default is 252274, which is too low particularly for servo.
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# manifests as spurious "No space left on device" when trying to install watches,
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# e.g. in dyn-dns by `systemctl start dyn-dns-watcher.path`.
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# see: <https://askubuntu.com/questions/828779/failed-to-add-run-systemd-ask-password-to-directory-watch-no-space-left-on-dev>
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boot.kernel.sysctl."fs.inotify.max_user_watches" = 1048576;
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}
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