diff --git a/qa/objectstore/bluestore.yaml b/qa/objectstore/bluestore.yaml
index 19dfeb036ff..07817ccb53a 100644
--- a/qa/objectstore/bluestore.yaml
+++ b/qa/objectstore/bluestore.yaml
@@ -19,6 +19,8 @@ overrides:
         osd failsafe full ratio: .95
 # this doesn't work with failures bc the log writes are not atomic across the two backends
 #        bluestore bluefs env mirror: true
+        bdev enable discard: true
+        bdev async discard: true
   ceph-deploy:
     fs: xfs
     bluestore: yes
@@ -35,4 +37,6 @@ overrides:
         mon osd backfillfull_ratio: .85
         mon osd nearfull ratio: .8
         osd failsafe full ratio: .95
+        bdev enable discard: true
+        bdev async discard: true