compaction profile used during migration, fixes #1750 (#1751)

* compaction profile used during migration, fixes #1750

* whitespace

[ci:skip]

util/src/kvdb.rs

@@ -52,6 +52,7 @@ impl DBTransaction {
 }
 
 /// Compaction profile for the database settings
+#[derive(Clone)]
 pub struct CompactionProfile {
 	/// L0-L1 target file size
 	pub initial_file_size: u64,
@@ -61,16 +62,18 @@ pub struct CompactionProfile {
 	pub write_rate_limit: Option<u64>,
 }
 
-impl CompactionProfile {
+impl Default for CompactionProfile {
 	/// Default profile suitable for most storage
-	pub fn default() -> CompactionProfile {
+	fn default() -> CompactionProfile {
 		CompactionProfile {
 			initial_file_size: 32 * 1024 * 1024,
 			file_size_multiplier: 2,
 			write_rate_limit: None,
 		}
 	}
+}
 
+impl CompactionProfile {
 	/// Slow hdd compaction profile
 	pub fn hdd() -> CompactionProfile {
 		CompactionProfile {

util/src/migration/mod.rs

@@ -29,12 +29,15 @@ use ::kvdb::{CompactionProfile, Database, DatabaseConfig, DBTransaction};
 pub struct Config {
 	/// Defines how many elements should be migrated at once.
 	pub batch_size: usize,
+	/// Database compaction profile.
+	pub compaction_profile: CompactionProfile,
 }
 
 impl Default for Config {
 	fn default() -> Self {
 		Config {
 			batch_size: 1024,
+			compaction_profile: Default::default(),
 		}
 	}
 }
@@ -199,7 +202,7 @@ impl Manager {
 		let db_config = DatabaseConfig {
 			max_open_files: 64,
 			cache_size: None,
-			compaction: CompactionProfile::default(),
+			compaction: config.compaction_profile.clone(),
 		};
 
 		let db_root = database_path(old_path);