tests: ensure that FIEMAP-enabled cp copies a sparse file efficiently

* tests/cp/fiemap-perf: New file.
* tests/Makefile.am (TESTS): Add it.

2 files changed, 33 insertions, 0 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 847f18136..7855ac519 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -320,6 +320,7 @@ TESTS =						\
   cp/dir-vs-file				\
   cp/existing-perm-race				\
   cp/fail-perm					\
+  cp/fiemap-perf                                \
   cp/file-perm-race				\
   cp/into-self					\
   cp/link					\
diff --git a/tests/cp/fiemap-perf b/tests/cp/fiemap-perf
new file mode 100755
index 000000000..429e59beb
--- /dev/null
+++ b/tests/cp/fiemap-perf
@@ -0,0 +1,32 @@
+#!/bin/sh
+# ensure that a sparse file is copied efficiently, by default
+
+# Copyright (C) 2011 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+print_ver_ cp
+
+# Require a fiemap-enabled FS.
+df -T -t btrfs -t xfs -t ext4 -t ocfs2 . \
+  || skip_ "this file system lacks FIEMAP support"
+
+# Create a large-but-sparse file.
+timeout 1 dd bs=1 seek=1T of=f < /dev/null || framework_failure_
+
+# Nothing can read (much less write) that many bytes in so little time.
+timeout 3 cp f f2 || framework_failure_
+
+Exit $fail