diff --git a/qa/suites/rados/basic/clusters/openstack.yaml b/qa/suites/rados/basic/clusters/openstack.yaml
index e4d84236abc..e559d9126e8 100644
--- a/qa/suites/rados/basic/clusters/openstack.yaml
+++ b/qa/suites/rados/basic/clusters/openstack.yaml
@@ -1,4 +1,4 @@
 openstack:
   - volumes: # attached to each instance
-      count: 3
+      count: 4
       size: 10 # GB
diff --git a/qa/suites/rados/thrash-erasure-code-big/cluster/openstack.yaml b/qa/suites/rados/thrash-erasure-code-big/cluster/openstack.yaml
index e4d84236abc..e559d9126e8 100644
--- a/qa/suites/rados/thrash-erasure-code-big/cluster/openstack.yaml
+++ b/qa/suites/rados/thrash-erasure-code-big/cluster/openstack.yaml
@@ -1,4 +1,4 @@
 openstack:
   - volumes: # attached to each instance
-      count: 3
+      count: 4
       size: 10 # GB
diff --git a/qa/suites/rados/thrash/clusters/openstack.yaml b/qa/suites/rados/thrash/clusters/openstack.yaml
index f4d1349b482..b0f3b9b4da2 100644
--- a/qa/suites/rados/thrash/clusters/openstack.yaml
+++ b/qa/suites/rados/thrash/clusters/openstack.yaml
@@ -1,4 +1,4 @@
 openstack:
   - volumes: # attached to each instance
-      count: 3
+      count: 4
       size: 30 # GB
diff --git a/qa/suites/rados/verify/clusters/openstack.yaml b/qa/suites/rados/verify/clusters/openstack.yaml
index e4d84236abc..e559d9126e8 100644
--- a/qa/suites/rados/verify/clusters/openstack.yaml
+++ b/qa/suites/rados/verify/clusters/openstack.yaml
@@ -1,4 +1,4 @@
 openstack:
   - volumes: # attached to each instance
-      count: 3
+      count: 4
       size: 10 # GB
diff --git a/qa/suites/rbd/thrash/clusters/openstack.yaml b/qa/suites/rbd/thrash/clusters/openstack.yaml
index 39e43d021ac..40fef4770b9 100644
--- a/qa/suites/rbd/thrash/clusters/openstack.yaml
+++ b/qa/suites/rbd/thrash/clusters/openstack.yaml
@@ -4,5 +4,5 @@ openstack:
       ram: 8000 # MB
       cpus: 1
     volumes: # attached to each instance
-      count: 3
+      count: 4
       size: 30 # GB