diff --git a/bash/fs.sh b/bash/fs.sh
index 1b2e72b..e13a498 100644
--- a/bash/fs.sh
+++ b/bash/fs.sh
@@ -1,3 +1,23 @@
+fs_make_btrfs() {
+	local device="${1}"
+	local label="${2}"
+	local uuid="${3}"
+	if [ -b "${device}" ]; then
+		set -- \
+			--force \
+			--checksum "sha256"
+		if [ -n "${label}" ]; then
+			set -- "${@}" \
+				--label "${label}"
+		fi
+		if [ -n "${uuid}" ]; then
+			set -- "${@}" \
+				--uuid "${uuid}"
+		fi
+		mkfs.btrfs "${@}" "${device}"
+	fi
+}
+
 fs_make_fat() {
 	local device="${1}"
 	local name="${2}"