Pass --reflink=auto to cp

This gives faster copying on BTRFS with fallback to regular copy on
all other filesystems.

Signed-off-by: Niels Thykier <niels@thykier.net>

1 files changed, 5 insertions, 3 deletions

diff --git a/dh_install b/dh_install
index 5715e04f..ebc42070 100755
--- a/dh_install
+++ b/dh_install
@@ -203,13 +203,15 @@ foreach my $package (getpackages()) {
 				my $dir = ($basename eq '.') ? $src : "$src/..";
 				my $pwd=`pwd`;
 				chomp $pwd;
-				complex_doit("cd '$dir' && find '$basename' $exclude \\( -type f -or -type l \\) -print0 | xargs -0 -I {} cp --parents -dp {} $pwd/$tmp/$dest/");
+				complex_doit("cd '$dir' && " .
+							 "find '$basename' $exclude \\( -type f -or -type l \\) -print0 | xargs -0 -I {} cp --reflink=auto --parents -dp {} $pwd/$tmp/$dest/");
 				# cp is annoying so I need a separate pass
 				# just for empty directories
-				complex_doit("cd '$dir' && find '$basename' $exclude \\( -type d -and -empty \\) -print0 | xargs -0 -I {} cp --parents -a {} $pwd/$tmp/$dest/");
+				complex_doit("cd '$dir' && " .
+							 "find '$basename' $exclude \\( -type d -and -empty \\) -print0 | xargs -0 -I {} cp --reflink=auto --parents -a {} $pwd/$tmp/$dest/");
 			}
 			else {
-				doit("cp", "-a", $src, "$tmp/$dest/");
+				doit("cp", '--reflink=auto', "-a", $src, "$tmp/$dest/");
 			}
 
 			if ($tmpdest) {