--- /dev/null
+#!/bin/bash
+# Create a base image with large hole extent, then convert to btrfs,
+# check the converted image.
+# Check if btrfs-convert can handle such large hole.
+# Fast pinpoint regression test. No options combination nor checksum
+# verification
+
+source $TOP/tests/common
+source $TOP/tests/common.convert
+
+setup_root_helper
+prepare_test_dev 512M
+check_prereq btrfs-convert
+
+default_mke2fs="mke2fs -t ext4 -b 4096"
+convert_test_preamble '' 'large hole extent test' 16k "$default_mke2fs"
+convert_test_prep_fs $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
+convert_test_do_convert