diff --git a/test/vhost/hotplug/blk_hotremove.sh b/test/vhost/hotplug/blk_hotremove.sh
index a350d90df..662ecb670 100644
--- a/test/vhost/hotplug/blk_hotremove.sh
+++ b/test/vhost/hotplug/blk_hotremove.sh
@@ -58,9 +58,9 @@ function blk_hotremove_tc2() {
     echo "Blk hotremove test case 2"
     # 1. Use rpc command to create blk controllers.
     $rpc_py construct_vhost_blk_controller naa.Nvme0n1p0.0 HotInNvme0n1p0
-    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p1.0 Nvme1n1p0
-    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p2.1 Nvme1n1p1
-    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p3.1 Nvme1n1p2
+    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p1.0 Mallocp0
+    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p2.1 Mallocp1
+    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p3.1 Mallocp2
     # 2. Run two VMs and attach every VM to two blk controllers.
     vm_run_with_arg "0 1"
     vms_prepare "0"
@@ -100,9 +100,9 @@ function blk_hotremove_tc3() {
     echo "Blk hotremove test case 3"
     # 1. Use rpc command to create blk controllers.
     $rpc_py construct_vhost_blk_controller naa.Nvme0n1p0.0 HotInNvme1n1p0
-    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p1.0 Nvme1n1p0
+    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p1.0 Mallocp0
     $rpc_py construct_vhost_blk_controller naa.Nvme0n1p2.1 HotInNvme1n1p1
-    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p3.1 Nvme1n1p1
+    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p3.1 Mallocp1
     # 2. Run two VMs and attach every VM to two blk controllers.
     vm_run_with_arg "0 1"
     vms_prepare "0 1"
@@ -142,9 +142,9 @@ function blk_hotremove_tc4() {
     echo "Blk hotremove test case 4"
     # 1. Use rpc command to create blk controllers.
     $rpc_py construct_vhost_blk_controller naa.Nvme0n1p0.0 HotInNvme2n1p0
-    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p1.0 Nvme1n1p0
+    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p1.0 Mallocp0
     $rpc_py construct_vhost_blk_controller naa.Nvme0n1p2.1 HotInNvme2n1p1
-    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p3.1 Nvme1n1p1
+    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p3.1 Mallocp1
     # 2. Run two VM, attached to blk controllers.
     vm_run_with_arg "0 1"
     vms_prepare "0 1"
@@ -193,9 +193,9 @@ function blk_hotremove_tc5() {
     echo "Blk hotremove test case 5"
     # 1. Use rpc command to create blk controllers.
     $rpc_py construct_vhost_blk_controller naa.Nvme0n1p0.0 HotInNvme3n1p0
-    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p1.0 Nvme1n1p0
-    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p2.1 Nvme1n1p1
-    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p3.1 Nvme1n1p2
+    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p1.0 Mallocp0
+    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p2.1 Mallocp1
+    $rpc_py construct_vhost_blk_controller naa.Nvme0n1p3.1 Mallocp2
     # 2. Run two VM, attached to blk controllers.
     vm_run_with_arg "0 1"
     vms_prepare "0 1"
diff --git a/test/vhost/hotplug/scsi_hotplug.sh b/test/vhost/hotplug/scsi_hotplug.sh
index 32fd51408..5590ca836 100755
--- a/test/vhost/hotplug/scsi_hotplug.sh
+++ b/test/vhost/hotplug/scsi_hotplug.sh
@@ -61,7 +61,8 @@ notice ""
 spdk_vhost_run
 $rpc_py set_bdev_nvme_hotplug -e
 $rpc_py construct_split_vbdev Nvme0n1 16
-$rpc_py construct_split_vbdev Nvme1n1 4
+$rpc_py construct_malloc_bdev 128 512 -b Malloc
+$rpc_py construct_split_vbdev Malloc 4
 $rpc_py construct_split_vbdev HotInNvme0n1 2
 $rpc_py construct_split_vbdev HotInNvme1n1 2
 $rpc_py construct_split_vbdev HotInNvme2n1 2
diff --git a/test/vhost/hotplug/scsi_hotremove.sh b/test/vhost/hotplug/scsi_hotremove.sh
index 829eb3f66..bc08c08f4 100644
--- a/test/vhost/hotplug/scsi_hotremove.sh
+++ b/test/vhost/hotplug/scsi_hotremove.sh
@@ -53,9 +53,9 @@ function scsi_hotremove_tc2() {
     echo "Scsi hotremove test case 2"
     # 1. Attach split NVMe bdevs to scsi controller.
     $rpc_py add_vhost_scsi_lun naa.Nvme0n1p0.0 0 HotInNvme0n1p0
-    $rpc_py add_vhost_scsi_lun naa.Nvme0n1p1.0 0 Nvme1n1p0
+    $rpc_py add_vhost_scsi_lun naa.Nvme0n1p1.0 0 Mallocp0
     $rpc_py add_vhost_scsi_lun naa.Nvme0n1p2.1 0 HotInNvme0n1p1
-    $rpc_py add_vhost_scsi_lun naa.Nvme0n1p3.1 0 Nvme1n1p1
+    $rpc_py add_vhost_scsi_lun naa.Nvme0n1p3.1 0 Mallocp1
 
     # 2. Run two VMs, attached to scsi controllers.
     vms_setup