diff --git a/test/sharness/t0024-datastore-config.sh b/test/sharness/t0024-datastore-config.sh
new file mode 100755
index 000000000..3811dbf36
--- /dev/null
+++ b/test/sharness/t0024-datastore-config.sh
@@ -0,0 +1,114 @@
+#!/bin/sh
+
+test_description="Test datastore config"
+
+. lib/test-lib.sh
+
+test_init_ipfs
+
+test_launch_ipfs_daemon
+test_kill_ipfs_daemon
+
+SPEC_ORIG=$(cat <<EOF)
+{
+  "mounts": [
+    {
+      "child": {
+        "path": "blocks",
+        "shardFunc": "/repo/flatfs/shard/v1/next-to-last/2",
+        "sync": true,
+        "type": "flatfs"
+      },
+      "mountpoint": "/blocks",
+      "prefix": "flatfs.datastore",
+      "type": "measure"
+    },
+    {
+      "child": {
+        "compression": "none",
+        "path": "datastore",
+        "type": "levelds"
+      },
+      "mountpoint": "/",
+      "prefix": "leveldb.datastore",
+      "type": "measure"
+    }
+  ],
+  "type": "mount"
+}
+EOF
+
+SPEC_NOSYNC=$(cat <<'EOF')
+{
+  "mounts": [
+    {
+      "child": {
+        "path": "blocks",
+        "shardFunc": "/repo/flatfs/shard/v1/next-to-last/2",
+        "sync": false,
+        "type": "flatfs"
+      },
+      "mountpoint": "/blocks",
+      "prefix": "flatfs.datastore",
+      "type": "measure"
+    },
+    {
+      "child": {
+        "compression": "none",
+        "path": "datastore",
+        "type": "levelds"
+      },
+      "mountpoint": "/",
+      "prefix": "leveldb.datastore",
+      "type": "measure"
+    }
+  ],
+  "type": "mount"
+}
+EOF
+
+SPEC_NEWSHARDFUN=$(cat <<'EOF')
+{
+  "mounts": [
+    {
+      "child": {
+        "path": "blocks",
+        "shardFunc": "/repo/flatfs/shard/v1/next-to-last/3",
+        "sync": true,
+        "type": "flatfs"
+      },
+      "mountpoint": "/blocks",
+      "prefix": "flatfs.datastore",
+      "type": "measure"
+    },
+    {
+      "child": {
+        "compression": "none",
+        "path": "datastore",
+        "type": "levelds"
+      },
+      "mountpoint": "/",
+      "prefix": "leveldb.datastore",
+      "type": "measure"
+    }
+  ],
+  "type": "mount"
+}
+EOF
+
+test_expect_success "change runtime value in spec config" '
+  ipfs config --json Datastore.Spec "$SPEC_NOSYNC"
+'
+
+test_launch_ipfs_daemon
+test_kill_ipfs_daemon
+
+test_expect_success "change on-disk value in spec config" '
+  ipfs config --json Datastore.Spec "$SPEC_NEWSHARDFUN"
+'
+
+test_expect_success "can not launch daemon after on-disk value change" '
+  test_must_fail ipfs daemon
+'
+
+test_done