google-compute-image: copy store paths with rsync

In `nixos/modules/virtualisation/google-compute-image.nix`, copy store paths with `rsync -a` rather than `cp -prd`, because `rsync` seems better able to handle the hard-links that may be present in the store, whereas `cp` may fail to copy them. I have tested that the Google Compute Engine image builds successfully for me with this patch, whereas it did not without this patch. This is the same fix applied for Azure images in commit 097ef6e. Fixes #23973.
NixOS · Mar 24, 2017 · e0e520a · e0e520a
1 parent 82624cb
commit e0e520a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/nixos/modules/virtualisation/google-compute-image.nix b/nixos/modules/virtualisation/google-compute-image.nix
@@ -62,7 +62,7 @@ in
 
           mkdir -p /mnt/nix/store
           echo "copying everything (will take a while)..."
-          cp -prd $storePaths /mnt/nix/store/
+          ${pkgs.rsync}/bin/rsync -a $storePaths /mnt/nix/store/
 
           # Register the paths in the Nix database.
           printRegistration=1 perl ${pkgs.pathsFromGraph} /tmp/xchg/closure | \