diff --git a/playbooks/roles/services/datasets/system/tasks/main.yml b/playbooks/roles/services/datasets/system/tasks/main.yml
index c5c0f69..5bb5d15 100644
--- a/playbooks/roles/services/datasets/system/tasks/main.yml
+++ b/playbooks/roles/services/datasets/system/tasks/main.yml
@@ -16,8 +16,8 @@
     name: "{{ services_containers_dataset }}"
     state: "present"
     extra_zfs_properties:
-      volsize: "100G"
-      refreservation: "none"
+      volsize: "107374182400"   # 100G
+      refreservation: "0"
       "com.sun:auto-snapshot": "false"
 
 - name: "format containers zvol"
diff --git a/playbooks/roles/services/include/vars/volumes.yml b/playbooks/roles/services/include/vars/volumes.yml
index d655881..66359d2 100644
--- a/playbooks/roles/services/include/vars/volumes.yml
+++ b/playbooks/roles/services/include/vars/volumes.yml
@@ -8,10 +8,10 @@ services_volumes:
   database:
     wal:
       extra_zfs_properties:
-        recordsize: "8K"
+        recordsize: "8192"      # 8K
     data:
       extra_zfs_properties:
-        recordsize: "8K"
+        recordsize: "8192"      # 8K
         logbias: "throughput"
   cloud:
     nextcloud: