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better tmp handling

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Christoph Cullmann 2024-07-12 19:35:16 +02:00
parent 1104bb6af3
commit 0788d1aa4d
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2 changed files with 10 additions and 22 deletions
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24
common.nix
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@ -123,21 +123,24 @@ in
environment.persistence."/nix/persistent" = { environment.persistence."/nix/persistent" = {
hideMounts = true; hideMounts = true;
directories = [ directories = [
# tmp dir, don't fill our tmpfs root with that
{ directory = "/tmp"; user = "root"; group = "root"; mode = "1777"; }
# systemd timers # systemd timers
{ directory = "/var/lib/systemd/timers"; user = "root"; group = "root"; mode = "u=rwx,g=rx,o=rx"; } { directory = "/var/lib/systemd/timers"; user = "root"; group = "root"; mode = "u=rwx,g=rx,o=rx"; }
# alsa state for persistent sound settings # alsa state for persistent sound settings
{ directory = "/var/lib/alsa"; user = "root"; group = "root"; mode = "u=rwx,g=rx,o=rx"; } { directory = "/var/lib/alsa"; user = "root"; group = "root"; mode = "u=rwx,g=rx,o=rx"; }
# nix tmp dir for rebuilds, don't fill our tmpfs root with that
{ directory = "/var/cache/nix"; user = "root"; group = "root"; mode = "u=rwx,g=rx,o=rx"; }
# NetworkManager connections # NetworkManager connections
{ directory = "/etc/NetworkManager"; user = "root"; group = "root"; mode = "u=rwx,g=rx,o=rx"; } { directory = "/etc/NetworkManager"; user = "root"; group = "root"; mode = "u=rwx,g=rx,o=rx"; }
{ directory = "/var/lib/NetworkManager"; user = "root"; group = "root"; mode = "u=rwx,g=rx,o=rx"; } { directory = "/var/lib/NetworkManager"; user = "root"; group = "root"; mode = "u=rwx,g=rx,o=rx"; }
]; ];
}; };
# kill the tmp content on reboots, we mount that to /nix/persistent to avoid memory fill-up
boot.tmp.cleanOnBoot = true;
# ensure our data is not rotting # ensure our data is not rotting
services.zfs.autoScrub = { services.zfs.autoScrub = {
enable = true; enable = true;
@ -253,20 +256,6 @@ in
''; '';
}; };
# move nix tmp directory off the tmpfs for large updates
# for nixos-build we set that directory as tmp dir in the command
systemd.services.nix-daemon = {
environment = {
# Location for temporary files
TMPDIR = "/var/cache/nix";
};
serviceConfig = {
# Create /var/cache/nix automatically on Nix Daemon start
CacheDirectory = "nix";
};
};
environment.variables.NIX_REMOTE = "daemon";
# auto update # auto update
system.autoUpgrade = { system.autoUpgrade = {
enable = true; enable = true;
@ -300,7 +289,6 @@ in
btop btop
calibre calibre
chromium chromium
clamav
clinfo clinfo
config.boot.kernelPackages.perf config.boot.kernelPackages.perf
delta delta

8
home.nix
View file

@ -31,10 +31,10 @@
# aliases # aliases
shellAliases = { shellAliases = {
# system build/update/cleanup # system build/update/cleanup
update = "sudo TMPDIR=/var/cache/nix nixos-rebuild boot"; update = "sudo nixos-rebuild boot";
upgrade = "sudo TMPDIR=/var/cache/nix nixos-rebuild boot --upgrade"; upgrade = "sudo nixos-rebuild boot --upgrade";
updatenow = "sudo TMPDIR=/var/cache/nix nixos-rebuild switch"; updatenow = "sudo nixos-rebuild switch";
upgradenow = "sudo TMPDIR=/var/cache/nix nixos-rebuild switch --upgrade"; upgradenow = "sudo nixos-rebuild switch --upgrade";
gc = "sudo nix-collect-garbage --delete-older-than 7d"; gc = "sudo nix-collect-garbage --delete-older-than 7d";
verify = "sudo nix --extra-experimental-features nix-command store verify --all"; verify = "sudo nix --extra-experimental-features nix-command store verify --all";
optimize = "sudo nix --extra-experimental-features nix-command store optimise"; optimize = "sudo nix --extra-experimental-features nix-command store optimise";