modules/cluster: start supporting multiple storages

modules/cluster/default.nix

@@ -44,6 +44,10 @@ in {
       servers = servers;
       # run tasks only on these:
       client.enable = builtins.elem hostName microvmServers;
+      client.meta =
+        lib.optionalAttrs (builtins.elem hostName storageServers) {
+          "c3d2.storage" = "big";
+        };
     };
     microvmUid = 997;
 

modules/cluster/deployment-options.nix

@@ -18,5 +18,9 @@
       type = with types; listOf str;
       default = [ "/etc" "/home" "/var" ];
     };
+    storage = mkOption {
+      type = types.enum [ "fast" "big" ];
+      default = "fast";
+    };
   };
 }

modules/cluster/deployment.nix

@@ -59,7 +59,7 @@ in
       tag = builtins.replaceStrings [ "/" ] [ "-" ] (
         withoutLeadingSlash mountPoint
       );
-      source = "/glusterfs/fast/microvms/${user}/${repo}/${vmName}/${withoutLeadingSlash mountPoint}";
+      source = "/glusterfs/${config.deployment.storage}/microvms/${user}/${repo}/${vmName}/${withoutLeadingSlash mountPoint}";
       inherit mountPoint;
     }) config.deployment.persistedShares;
     volumes = [ {
@@ -76,6 +76,13 @@ in
     }) config.deployment.networks;
   };
 
+  skyflake = {
+    nomadJob.constraints = lib.optionals (config.deployment.storage == "big") [ {
+      attribute = "\${meta.c3d2.storage}";
+      value = "big";
+    } ];
+  };
+
   networking = {
     useDHCP = false;
     dhcpcd.enable = false;