From 17555cad7965ff70ee857463f69e8b2c696dbb64 Mon Sep 17 00:00:00 2001
From: Graham Dennis <gdennis@anduril.com>
Date: Thu, 25 Jul 2024 12:35:37 +1000
Subject: [PATCH] Count hard links when sizing virtual disks

cptofs does not preserve hard links, so each hard link needs to be
accounted for separately when sizing virtual disks
---
 nixos/lib/make-disk-image.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nixos/lib/make-disk-image.nix b/nixos/lib/make-disk-image.nix
index 208eaf59dc5c..e5b3d1db70c9 100644
--- a/nixos/lib/make-disk-image.nix
+++ b/nixos/lib/make-disk-image.nix
@@ -470,7 +470,7 @@ let format' = format; in let
       additionalSpace=$(( $(numfmt --from=iec '${additionalSpace}') + reservedSpace ))
 
       # Compute required space in filesystem blocks
-      diskUsage=$(find . ! -type d -print0 | du --files0-from=- --apparent-size --block-size "${blockSize}" | cut -f1 | sum_lines)
+      diskUsage=$(find . ! -type d -print0 | du --files0-from=- --apparent-size --count-links --block-size "${blockSize}" | cut -f1 | sum_lines)
       # Each inode takes space!
       numInodes=$(find . | wc -l)
       # Convert to bytes, inodes take two blocks each!