feat: add leveldb spec, from go-ipfs-config

config/init.go

@@ -159,6 +159,26 @@ func badgerSpec() map[string]interface{} {
 			"syncWrites": false,
 			"truncate":   true,
 		},
+		"crust": "http://127.0.0.1:12222/api/v0",
+	}
+}
+
+func leveldbSpec() map[string]interface{} {
+	return map[string]interface{}{
+		"type": "mount",
+		"mounts": []interface{}{
+			map[string]interface{}{
+				"mountpoint": "/",
+				"type":       "measure",
+				"prefix":     "leveldb.datastore",
+				"child": map[string]interface{}{
+					"type":        "levelds",
+					"path":        "datastore",
+					"compression": "none",
+				},
+			},
+		},
+		"crust": "http://127.0.0.1:12222/api/v0",
 	}
 }
 
@@ -188,6 +208,7 @@ func flatfsSpec() map[string]interface{} {
 				},
 			},
 		},
+		"crust": "http://127.0.0.1:12222/api/v0",
 	}
 }
 

config/profile.go

@@ -203,6 +203,15 @@ NOTE: This profile may only be applied when first initializing node at IPFS_PATH
 			return nil
 		},
 	},
+	"leveldb": {
+		Description: `Only use leveldb`,
+
+		InitOnly: true,
+		Transform: func(c *Config) error {
+			c.Datastore.Spec = leveldbSpec()
+			return nil
+		},
+	},
 	"lowpower": {
 		Description: `Reduces daemon overhead on the system. May affect node
 functionality - performance of content discovery and data