From b53842df3e8fbbc97293bb58d23d8b87dae890fb Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Tue, 11 Sep 2012 10:55:56 -0400
Subject: [PATCH] Don't set the passno field for tmpfs and other FSs that have
 no device

If passno is set, then systemd will instantiate a systemd-fsck unit,
which in turn will instantiate a <device>.device unit
(e.g. "none.device").  Since no such device exists, mounting will
fail.  So don't set passno.
---
 modules/tasks/filesystems.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/tasks/filesystems.nix b/modules/tasks/filesystems.nix
index 8eaf77330a3d..ab58c0757b66 100644
--- a/modules/tasks/filesystems.nix
+++ b/modules/tasks/filesystems.nix
@@ -15,7 +15,7 @@ let
           + " " + fs.fsType
           + " " + fs.options
           + " 0"
-          + " " + (if fs.fsType == "none" || fs.fsType == "btrfs" || fs.noCheck then "0" else
+          + " " + (if fs.fsType == "none" || fs.device == "none" || fs.fsType == "btrfs" || fs.fsType == "tmpfs" || fs.noCheck then "0" else
                    if fs.mountPoint == "/" then "1" else "2")
           + "\n"
       )}