diff --git a/test/TEST-15-BTRFSRAID/.shchkdir b/test/TEST-15-BTRFSRAID/.shchkdir
new file mode 100644
index 00000000..e69de29b
diff --git a/test/TEST-15-BTRFSRAID/create-root.sh b/test/TEST-15-BTRFSRAID/create-root.sh
index 0e3336e2..380a8d14 100755
--- a/test/TEST-15-BTRFSRAID/create-root.sh
+++ b/test/TEST-15-BTRFSRAID/create-root.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # don't let udev and this script step on eachother's toes
 for x in 64-lvm.rules 70-mdadm.rules 99-mount-rules; do
-    > "/etc/udev/rules.d/$x"
+    : > "/etc/udev/rules.d/$x"
 done
 modprobe btrfs
 udevadm control --reload
diff --git a/test/TEST-15-BTRFSRAID/test.sh b/test/TEST-15-BTRFSRAID/test.sh
index 43573a0b..7addd6dc 100755
--- a/test/TEST-15-BTRFSRAID/test.sh
+++ b/test/TEST-15-BTRFSRAID/test.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+# shellcheck disable=SC2034
 TEST_DESCRIPTION="root filesystem on multiple device btrfs"
 
 KVERSION=${KVERSION-$(uname -r)}
@@ -8,28 +9,30 @@ KVERSION=${KVERSION-$(uname -r)}
 test_run() {
     DISKIMAGE=$TESTDIR/TEST-15-BTRFSRAID-root.img
     MARKER_DISKIMAGE=$TESTDIR/TEST-15-BTRFSRAID-marker.img
-    dd if=/dev/zero of=$MARKER_DISKIMAGE bs=512 count=10
-    $testdir/run-qemu \
-        -drive format=raw,index=0,media=disk,file=$MARKER_DISKIMAGE \
-        -drive format=raw,index=1,media=disk,file=$DISKIMAGE \
+    dd if=/dev/zero of="$MARKER_DISKIMAGE" bs=512 count=10
+    "$testdir"/run-qemu \
+        -drive format=raw,index=0,media=disk,file="$MARKER_DISKIMAGE" \
+        -drive format=raw,index=1,media=disk,file="$DISKIMAGE" \
         -append "panic=1 systemd.crash_reboot root=LABEL=root rw rd.retry=3 rd.info console=ttyS0,115200n81 selinux=0 rd.shell=0 $DEBUGFAIL" \
-        -initrd $TESTDIR/initramfs.testing
-    grep -U --binary-files=binary -F -m 1 -q dracut-root-block-success $MARKER_DISKIMAGE || return 1
+        -initrd "$TESTDIR"/initramfs.testing
+    grep -U --binary-files=binary -F -m 1 -q dracut-root-block-success "$MARKER_DISKIMAGE" || return 1
 }
 
 test_setup() {
     # Create the blank file to use as a root filesystem
     DISKIMAGE=$TESTDIR/TEST-15-BTRFSRAID-root.img
-    rm -f -- $DISKIMAGE
-    dd if=/dev/zero of=$DISKIMAGE bs=1M count=1024
+    rm -f -- "$DISKIMAGE"
+    dd if=/dev/zero of="$DISKIMAGE" bs=1M count=1024
 
     kernel=$KVERSION
     # Create what will eventually be our root filesystem onto an overlay
     (
+        # shellcheck disable=SC2030
         export initdir=$TESTDIR/overlay/source
-        . $basedir/dracut-init.sh
+        # shellcheck disable=SC1090
+        . "$basedir"/dracut-init.sh
         (
-            cd "$initdir"
+            cd "$initdir" || exit
             mkdir -p -- dev sys proc etc var/run tmp
             mkdir -p root usr/bin usr/lib usr/lib64 usr/sbin
             for i in bin sbin lib lib64; do
@@ -49,14 +52,17 @@ test_setup() {
         inst ./test-init.sh /sbin/init
         inst_simple /etc/os-release
         find_binary plymouth > /dev/null && inst_multiple plymouth
-        cp -a /etc/ld.so.conf* $initdir/etc
+        cp -a /etc/ld.so.conf* "$initdir"/etc
         ldconfig -r "$initdir"
     )
 
     # second, install the files needed to make the root filesystem
     (
+        # shellcheck disable=SC2031
+        # shellcheck disable=SC2030
         export initdir=$TESTDIR/overlay
-        . $basedir/dracut-init.sh
+        # shellcheck disable=SC1090
+        . "$basedir"/dracut-init.sh
         inst_multiple sfdisk mkfs.btrfs poweroff cp umount dd sync
         inst_hook initqueue 01 ./create-root.sh
         inst_hook initqueue/finished 01 ./finished-false.sh
@@ -66,41 +72,44 @@ test_setup() {
     # create an initramfs that will create the target root filesystem.
     # We do it this way so that we do not risk trashing the host mdraid
     # devices, volume groups, encrypted partitions, etc.
-    $basedir/dracut.sh -l -i $TESTDIR/overlay / \
+    "$basedir"/dracut.sh -l -i "$TESTDIR"/overlay / \
         -m "bash btrfs udev-rules base rootfs-block fs-lib kernel-modules qemu" \
         -d "piix ide-gd_mod ata_piix btrfs sd_mod" \
         --nomdadmconf \
         --no-hostonly-cmdline -N \
-        -f $TESTDIR/initramfs.makeroot $KVERSION || return 1
+        -f "$TESTDIR"/initramfs.makeroot "$KVERSION" || return 1
 
-    rm -rf -- $TESTDIR/overlay
+    rm -rf -- "$TESTDIR"/overlay
 
     # Invoke KVM and/or QEMU to actually create the target filesystem.
-    $testdir/run-qemu \
-        -drive format=raw,index=0,media=disk,file=$DISKIMAGE \
+    "$testdir"/run-qemu \
+        -drive format=raw,index=0,media=disk,file="$DISKIMAGE" \
         -append "root=/dev/fakeroot rw quiet console=ttyS0,115200n81 selinux=0" \
-        -initrd $TESTDIR/initramfs.makeroot || return 1
+        -initrd "$TESTDIR"/initramfs.makeroot || return 1
 
-    dd if=$DISKIMAGE bs=512 count=4 skip=2048 | grep -U --binary-files=binary -F -m 1 -q dracut-root-block-created || return 1
+    dd if="$DISKIMAGE" bs=512 count=4 skip=2048 | grep -U --binary-files=binary -F -m 1 -q dracut-root-block-created || return 1
 
     (
+        # shellcheck disable=SC2031
         export initdir=$TESTDIR/overlay
-        . $basedir/dracut-init.sh
+        # shellcheck disable=SC1090
+        . "$basedir"/dracut-init.sh
         inst_multiple poweroff shutdown
         inst_hook shutdown-emergency 000 ./hard-off.sh
         inst_hook emergency 000 ./hard-off.sh
         inst_simple ./99-idesymlinks.rules /etc/udev/rules.d/99-idesymlinks.rules
     )
-    $basedir/dracut.sh -l -i $TESTDIR/overlay / \
+    "$basedir"/dracut.sh -l -i "$TESTDIR"/overlay / \
         -o "plymouth network kernel-network-modules" \
         -a "debug" \
         -d "piix ide-gd_mod ata_piix btrfs sd_mod" \
         --no-hostonly-cmdline -N \
-        -f $TESTDIR/initramfs.testing $KVERSION || return 1
+        -f "$TESTDIR"/initramfs.testing "$KVERSION" || return 1
 }
 
 test_cleanup() {
     return 0
 }
 
-. $testdir/test-functions
+# shellcheck disable=SC1090
+. "$testdir"/test-functions