diff --git a/Mesa-drivers.changes b/Mesa-drivers.changes
index b1a1e15..91b7be9 100644
--- a/Mesa-drivers.changes
+++ b/Mesa-drivers.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Jan 17 16:52:35 UTC 2018 - normand@linux.vnet.ibm.com
+
+- Add _constraints to select 6G disk for PowerPC
+  to avoid cpio: write error on obs-power8-05 workers boo#1076325
+
 -------------------------------------------------------------------
 Mon Jan 15 15:08:13 UTC 2018 - msrb@suse.com
 
diff --git a/Mesa.changes b/Mesa.changes
index b1a1e15..91b7be9 100644
--- a/Mesa.changes
+++ b/Mesa.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Jan 17 16:52:35 UTC 2018 - normand@linux.vnet.ibm.com
+
+- Add _constraints to select 6G disk for PowerPC
+  to avoid cpio: write error on obs-power8-05 workers boo#1076325
+
 -------------------------------------------------------------------
 Mon Jan 15 15:08:13 UTC 2018 - msrb@suse.com
 
diff --git a/_constraints b/_constraints
new file mode 100644
index 0000000..5f95421
--- /dev/null
+++ b/_constraints
@@ -0,0 +1,14 @@
+<constraints>
+  <overwrite>
+    <conditions>
+      <arch>ppc</arch>
+      <arch>ppc64</arch>
+      <arch>ppc64le</arch>
+    </conditions>
+    <hardware>
+      <disk>
+        <size unit="G">6</size>
+      </disk>
+    </hardware>
+  </overwrite>
+</constraints>