From 3ade16c9c842bb18a5c0edb56ed8153c250ddeaf Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@redhat.com>
Date: Thu, 23 Jun 2016 17:47:03 +0100
Subject: fstab-generator: ignore root=/dev/nfs (#3591)

root=/dev/nfs is a legacy option for the kernel to handle root on NFS.

Documentation for this kernel command line option
can be found in the kernel source tree:

Documentation/filesystems/nfs/nfsroot.txt
---
 src/fstab-generator/fstab-generator.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/fstab-generator/fstab-generator.c b/src/fstab-generator/fstab-generator.c
index fc7cf39847..880dc1bd2a 100644
--- a/src/fstab-generator/fstab-generator.c
+++ b/src/fstab-generator/fstab-generator.c
@@ -502,6 +502,12 @@ static int add_sysroot_mount(void) {
                 return 0;
         }
 
+        if (streq(arg_root_what, "/dev/nfs")) {
+                /* This is handled by the kernel or the initrd */
+                log_debug("Skipping root directory handling, as /dev/nfs was requested.");
+                return 0;
+        }
+
         what = fstab_node_to_udev_node(arg_root_what);
         if (!what)
                 return log_oom();
-- 
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