‰ cat /etc/portage/patches/sys-apps/coreutils/coreutils-reflink-auto.patch --- a/src/install.c.orig 2021-04-10 15:13:14.698039128 +0300 +++ a/src/install.c 2021-04-10 15:13:24.114292838 +0300 @@ -264,7 +264,7 @@ { cp_options_default (x); x->copy_as_regular = true; - x->reflink_mode = REFLINK_NEVER; + x->reflink_mode = REFLINK_AUTO; x->dereference = DEREF_ALWAYS; x->unlink_dest_before_opening = true; x->unlink_dest_after_failed_open = false; --- a/src/cp.c.orig 2021-04-10 15:12:03.591111323 +0300 +++ a/src/cp.c 2021-04-10 15:12:40.576190820 +0300 @@ -793,7 +793,7 @@ x->move_mode = false; x->install_mode = false; x->one_file_system = false; - x->reflink_mode = REFLINK_NEVER; + x->reflink_mode = REFLINK_AUTO; x->preserve_ownership = false; x->preserve_links = false;