btrfs-progs/tests/template/multi-mkfs-mount

#!/bin/bash
# Create a new multi-device filesystem and test that it can be mounted

source "$TEST_TOP/common" || exit

setup_root_helper
setup_loopdevs 4
prepare_loopdevs
TEST_DEV=${loopdevs[1]}

run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f -d raid1 -m raid1 "${loopdevs[@]}"
run_check_mount_test_dev
run_check $SUDO_HELPER dd if=/dev/zero of="$TEST_MNT"/file bs=1M count=1
run_check_umount_test_dev

cleanup_loopdevs