btrfs-progs/tests/mkfs-tests/024-fst-bitmaps/test.sh
Qu Wenruo 10a7c0eda5 btrfs-progs: tests: make sure we don't create bitmaps for empty fs
Add test case is to make sure on a relative large empty fs, we won't
create bitmaps to unnecessarily increase the size of free space tree.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2022-05-20 15:54:20 +02:00

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#!/bin/bash
# Basic check if mkfs supports the runtime feature free-space-tree
source "$TEST_TOP/common"
check_prereq mkfs.btrfs
check_prereq btrfs
setup_root_helper
setup_loopdevs 4
prepare_loopdevs
dev1=${loopdevs[1]}
tmp=$(_mktemp fst-bitmap)
test_do_mkfs()
{
run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f "$@"
if run_check_stdout "$TOP/btrfs" check "$dev1" | grep -iq warning; then
_fail "warnings found in check output"
fi
}
test_do_mkfs -m raid1 -d raid0 ${loopdevs[@]}
run_check_stdout $SUDO_HELPER "$TOP/btrfs" inspect-internal dump-tree \
-t free_space "$dev1" > "$tmp.dump-tree"
cleanup_loopdevs
if grep -q FREE_SPACE_BITMAP "$tmp.dump-tree"; then
rm -f -- "$tmp*"
_fail "free space bitmap should not be created for empty fs"
fi
rm -f -- "$tmp*"