btrfs-progs/tests/convert-tests/007-unsupported-block-sizes/test.sh

#!/bin/bash
# Check if block sizes smaller than 4k expectedly fail to convert

source "$TEST_TOP/common"
source "$TEST_TOP/common.convert"

setup_root_helper
prepare_test_dev
check_prereq btrfs-convert
check_global_prereq mke2fs

for bs in 1024 2048; do
	default_mke2fs="mke2fs -t ext4 -b $bs"
	convert_test_preamble '' "unsupported block size $bs" 16k "$default_mke2fs"
	convert_test_prep_fs ext4 $default_mke2fs

	run_check $SUDO_HELPER dd if=/dev/zero of="$TEST_MNT/file" bs=1M \
		count=1 seek=1024 > /dev/null 2>&1

	run_check_umount_test_dev
	run_mustfail "$bs block converted" "$TOP/btrfs-convert" "$TEST_DEV"
done