dracut-functions.sh: cp with --reflink=auto and --sparse=auto

cp will use COW data copy most of the time. So, it's even better than
hardlink, because we don't have to care about hardlinks, when modifying
files in post.

diff --git a/dracut-functions.sh b/dracut-functions.sh
index 3b562e790ac4d1ad17b39249dfccda10711a3886..b9ce688ac1b792a4ffae1228498d232db21071f4 100755 (executable)
--- a/dracut-functions.sh
+++ b/dracut-functions.sh
@@ -435,7 +435,7 @@ inst_simple() {
         inst "${_src%/*}/.${_src##*/}.hmac" "${target%/*}/.${target##*/}.hmac"
     fi
     ddebug "Installing $_src"
-    cp --sparse=always -pfL "$_src" "${initdir}/$target"
+    cp --reflink=auto --sparse=auto -pfL "$_src" "${initdir}/$target"
 }
 
 # find symlinks linked to given library file