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update packages + some tweaks

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Reid 2026-04-18 18:41:55 -07:00
parent 527378ad95
commit edfb60dd12
Signed by: reidlab
GPG key ID: DAF5EAF6665839FD
26 changed files with 304 additions and 319 deletions
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36
modules/hardware/fs/fstrim.nix
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@ -1,36 +0,0 @@
{ config, lib, ... }:
with lib;
{
# if lvm is enabled, then tell it to issue discards
# (this is good for SSDs and has almost no downsides on HDDs, so
# it's a good idea to enable it unconditionally)
environment.etc."lvm/lvm.conf".text = mkIf config.services.lvm.enable ''
devices {
issue_discards = 1
}
'';
# discard blocks that are not in use by the filesystem, good for SSDs
services.fstrim = {
# we may enable this unconditionally across all systems becuase it's performance
# impact is negligible on systems without a SSD - which means it's a no-op with
# almost no downsides aside from the service firing once per week
enable = true;
# the default value, good enough for average-load systems
interval = "weekly";
};
# tweak fstrim service to run only when on AC power
# and to be nice to other processes
# (this is a good idea for any service that runs periodically)
systemd.services.fstrim = {
unitConfig.ConditionACPower = true;
serviceConfig = {
Nice = 19;
IOSchedulingClass = "idle";
};
};
}

7
modules/hardware/fs/lvm.nix
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@ -1,7 +0,0 @@
{ config, lib, ... }:
with lib;
{
# i don't use lvm, can be disabled
services.lvm.enable = mkDefault false;
}

16
modules/hardware/fs/scrub.nix
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@ -1,16 +0,0 @@
{ config, lib, ... }:
with lib;
let
supportedFilesystems = builtins.map (builtins.getAttr "fsType") (builtins.attrValues config.fileSystems);
mkScrubConfig = fsType: {
enable = builtins.elem fsType supportedFilesystems;
interval = "weekly";
};
in {
services.btrfs.autoScrub = mkScrubConfig "btrfs";
services.zfs.autoScrub = mkScrubConfig "zfs";
# bcachefs exists but it was "ejected from the kernel" for "repeated violations of kernel dev. guidelines"
# linus "tech tips" torvalds said himself "nobody sane uses bcachefs and expects it to be stable" (https://en.wikipedia.org/wiki/Bcachefs#Stability)
}