NFS: Difference between revisions

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      options = [ "x-systemd.idle-timeout=600" ]; # disconnects after 10 minutes (i.e. 600 seconds)
    };
+}
+</syntaxhighlight>
+=== Using systemd.mounts and systemd.automounts ===
+Using <code>systemd.mounts</code> and <code>systemd.automounts</code> was the only way to solve NFS client hangs experienced with the above configurations. Here is an example with auto-disconnecting and lazy-mounting implemented, and the <code>noatime</code> mount option added.
+Note that <code>wantedBy = [ "multi-user.target" ];</code> is required for the automount unit to start at boot.
+Also note that <code>x-systemd</code> mount options are unneeded, as they are a representation of systemd options in <code>fstab(5)</code> format. They get parsed and converted to unit files by <code>systemd-fstab-generator(8)</code> as mentioned in <code>systemd.mount(5)</code>.
+<syntaxhighlight lang="nix">
+{
+  systemd.mounts = {
+    type = "nfs";
+    mountConfig = {
+      Options = "noatime";
+    };
+    what = "server:/tomoyo";
+    where = "/mnt/tomoyo";
+  };
+  systemd.automounts = {
+    wantedBy = [ "multi-user.target" ];
+    automountConfig = {
+      TimeoutIdleSec = "600";
+    };
+    where = "/mnt/tomoyo";
+  };
+}
+</syntaxhighlight>
+Multiple mounts with the exact same options can benefit from abstraction.
+<syntaxhighlight lang="nix">
+{
+  systemd.mounts = let commonMountOptions = {
+    type = "nfs";
+    mountConfig = {
+      Options = "noatime";
+    };
+  };
+  in
+  [
+    (commonMountOptions // {
+      what = "server:/tomoyo";
+      where = "/mnt/tomoyo";
+    })
+    (commonMountOptions // {
+      what = "server:/oyomot";
+      where = "/mnt/oyomot";
+    })
+  ];
+  systemd.automounts = let commonAutoMountOptions = {
+    wantedBy = [ "multi-user.target" ];
+    automountConfig = {
+      TimeoutIdleSec = "600";
+    };
+  };
+  in
+  [
+    (commonAutoMountOptions // { where = "/mnt/tomoyo"; })
+    (commonAutoMountOptions // { where = "/mnt/oyomot"; })
+  ];
 }
 </syntaxhighlight>