Add mountpoint check to btrfs subvol logic

Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/makechrootpkg.in b/makechrootpkg.in
index 00e538a..2309be2 100644
--- a/makechrootpkg.in
+++ b/makechrootpkg.in
@@ -142,7 +142,7 @@ create_chroot() {
 		slock 8 "$chrootdir/root.lock" "Locking clean chroot"
 
 		stat_busy "Creating clean working copy [$copy]"
-		if [[ "$chroottype" == btrfs ]]; then
+		if [[ "$chroottype" == btrfs ]] && ! mountpoint -q "$copydir"; then
 			if [[ -d $copydir ]]; then
 				btrfs subvolume delete "$copydir" >/dev/null ||
 					die "Unable to delete subvolume %s" "$copydir"