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Diffstat (limited to 'tests/cp/fiemap-extents.sh')
-rwxr-xr-x | tests/cp/fiemap-extents.sh | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/tests/cp/fiemap-extents.sh b/tests/cp/fiemap-extents.sh new file mode 100755 index 0000000..672070e --- /dev/null +++ b/tests/cp/fiemap-extents.sh @@ -0,0 +1,84 @@ +#!/bin/sh +# Test cp handles extents correctly + +# Copyright (C) 2011-2016 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=.}/tests/init.sh"; path_prepend_ ./src +print_ver_ cp + +require_sparse_support_ + +touch fiemap_chk || framework_failure_ +fiemap_capable_ fiemap_chk || + skip_ 'this file system lacks FIEMAP support' +rm fiemap_chk + +fallocate --help >/dev/null || skip_ 'The fallocate utility is required' +touch falloc.test || framework_failure_ +fallocate -l 1 -o 1 -n falloc.test || + skip_ 'this file system lacks FALLOCATE support' +rm falloc.test + +# We don't currently handle unwritten extents specially +if false; then +# Require more space than we'll actually use, so that +# tests run in parallel do not run out of space. +# Otherwise, with inadequate space, simply running the following +# fallocate command would induce a temporary disk-full condition, +# which would cause failure of unrelated tests run in parallel. +require_file_system_bytes_free_ 800000000 + +fallocate -l 1MiB num.test || + skip_ "this fallocate doesn't support numbers with IEX suffixes" + +fallocate -l 600MiB space.test || + skip_ 'this test needs at least 600MiB free space' + +# Disable this test on old BTRFS (e.g. Fedora 14) +# which reports ordinary extents for unwritten ones. +filefrag space.test || skip_ 'the 'filefrag' utility is missing' +filefrag -v space.test | grep -F 'unwritten' > /dev/null || + skip_ 'this file system does not report empty extents as "unwritten"' + +rm space.test + +# Ensure we read a large empty file quickly +fallocate -l 300MiB empty.big || framework_failure_ +timeout 3 cp --sparse=always empty.big cp.test || fail=1 +test $(stat -c %s empty.big) = $(stat -c %s cp.test) || fail=1 +rm empty.big cp.test +fi + +# Ensure we handle extents beyond file size correctly. +# Note until we support fallocate, we will not maintain +# the file allocation. FIXME: amend this test if fallocate is supported. +# Note currently this only uses fiemap logic when the allocation (-l) +# is smaller than the size, thus identifying the file as sparse. +# Note the '-l 1' case is an effective noop, and just checks +# a file with a trailing hole is copied correctly. +for sparse_mode in always auto never; do + for alloc in '-l 4194304' '-l 1048576 -o 4194304' '-l 1'; do + dd count=10 if=/dev/urandom iflag=fullblock of=unwritten.withdata + truncate -s 2MiB unwritten.withdata || framework_failure_ + fallocate $alloc -n unwritten.withdata || framework_failure_ + cp --sparse=$sparse_mode unwritten.withdata cp.test || fail=1 + test $(stat -c %s unwritten.withdata) = $(stat -c %s cp.test) || fail=1 + cmp unwritten.withdata cp.test || fail=1 + rm unwritten.withdata cp.test || framework_failure_ + done +done + +Exit $fail |