Add snapraid

flake.nix

@@ -99,7 +99,11 @@
 
       saikai = mkSystem "saikai" "server" [];
 
-      kadan = mkSystem "kadan" "server" [];
+      kadan = mkSystem "kadan" "server" [
+        ({pkgs, ...}: {
+          environment.systemPackages = with pkgs; [tmux];
+        })
+      ];
     };
   };
 }

hosts/kadan/hardware-configuration.nix

@@ -36,27 +36,27 @@
     fsType = "vfat";
   };
 
-  fileSystems."/media/a" = {
+  fileSystems."/mnt/a" = {
     device = "/dev/disk/by-label/sda";
     fsType = "ext4";
   };
-  fileSystems."/media/c" = {
+  fileSystems."/mnt/c" = {
     device = "/dev/disk/by-label/sdc";
     fsType = "ext4";
   };
-  fileSystems."/media/d" = {
+  fileSystems."/mnt/d" = {
     device = "/dev/disk/by-label/sdd";
     fsType = "ext4";
   };
-  fileSystems."/media/parity" = {
+  fileSystems."/mnt/parity" = {
     device = "/dev/disk/by-label/parity";
     fsType = "ext4";
   };
 
-  environment.systemPackages = with pkgs; [ mergerfs ];
-  fileSystems."/media/kyoo" = {
-    device = "/media/a:/media/c:/media/d";
-    depends = ["/media/a" "/media/c" "/media/d"];
+  environment.systemPackages = with pkgs; [mergerfs];
+  fileSystems."/mnt/kyoo" = {
+    device = "/mnt/a:/mnt/c:/mnt/d";
+    depends = ["/mnt/a" "/mnt/c" "/mnt/d"];
     fsType = "fuse.mergerfs";
     options = [
       "func.getattr=newest" # For kyoo's scanner
@@ -66,6 +66,29 @@
     ];
   };
 
+  snapraid = {
+    enable = true;
+    exclude = [
+      "*.unrecoverable"
+      "/tmp/"
+      "/lost+found/"
+    ];
+    dataDisks = {
+      a = "/mnt/a/";
+      c = "/mnt/c/";
+      d = "/mnt/d/";
+    };
+    contentFiles = [
+      "/var/snapraid.content"
+      "/mnt/a/snapraid.content"
+      "/mnt/c/snapraid.content"
+      "/mnt/d/snapraid.content"
+    ];
+    parityFiles = [
+      "/mnt/parity/snapraid.parity"
+    ];
+  };
+
   swapDevices = [];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking

modules/misc/impermanence.nix

@@ -34,6 +34,7 @@
       "/etc/ssh/ssh_host_ed25519_key.pub"
       "/etc/ssh/ssh_host_rsa_key"
       "/etc/ssh/ssh_host_rsa_key.pub"
+      "/var/snapraid.content"
     ];
     users.zoriya = {
       directories = [