add mixed load test, other fixes
diff --git a/scripts/hdd.fio b/scripts/hdd.fio
index c682380..33b05c0 100644
--- a/scripts/hdd.fio
+++ b/scripts/hdd.fio
@@ -5,13 +5,16 @@
 buffered=0
 iodepth=1
 softrandommap=1
-filename=/var/lib/nova/instances/b9fa1a9f-7d43-4cc6-b6cc-133c2a84ab41/xxx.bin
+filename=/media/data/xxx.bin
+# filename=/tmp/xxx.bin
 randrepeat=0
 size=10G
 ramp_time=5
-runtime=10
+runtime=15
 blocksize=4k
 rw=randwrite
 sync=1
-numjobs=1
+direct=1
+thread=1
+numjobs=50