diff --git a/tests/sys/cddl/zfs/tests/slog/slog_012_neg.ksh b/tests/sys/cddl/zfs/tests/slog/slog_012_neg.ksh
index 0535c4ee4a15..f1d1e09501f5 100644
--- a/tests/sys/cddl/zfs/tests/slog/slog_012_neg.ksh
+++ b/tests/sys/cddl/zfs/tests/slog/slog_012_neg.ksh
@@ -74,7 +74,9 @@ function test_slog_mirror_corruption # <pooltype> <sparetype>
 	log_must $DD if=/dev/urandom of=$mntpnt/testfile.${TESTCASE_ID} count=100
 
 	ldev=$(random_get $LDEV)
-	log_must create_vdevs $ldev
+	eval `$STAT -s $ldev`
+	log_must $TRUNCATE -s0 $ldev
+	log_must $TRUNCATE -s $st_size $ldev
 	log_must $ZPOOL scrub $TESTPOOL
 
 	log_must display_status $TESTPOOL