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#!/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 10 truncate -s1T f || framework_failure_
# Nothing can read (much less write) that many bytes in so little time.
timeout 10 cp f f2 || fail=1
Exit $fail
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