[#1302] writecache: Allow to specify custom page size

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/local_object_storage/writecache/options.go

@@ -48,6 +48,8 @@ type options struct {
 	metrics Metrics
 	// disableBackgroundFlush is for testing purposes only.
 	disableBackgroundFlush bool
+	// pageSize is bbolt's page size config value
+	pageSize int
 }
 
 // WithLogger sets logger.
@@ -173,3 +175,10 @@ func WithDisableBackgroundFlush() Option {
 		o.disableBackgroundFlush = true
 	}
 }
+
+// WithPageSize sets bbolt's page size.
+func WithPageSize(s int) Option {
+	return func(o *options) {
+		o.pageSize = s
+	}
+}

pkg/local_object_storage/writecache/storage.go

@@ -32,7 +32,7 @@ func (c *cache) openStore(mod mode.ComponentMode) error {
 		return err
 	}
 
-	c.db, err = OpenDB(c.path, mod.ReadOnly(), c.openFile)
+	c.db, err = OpenDB(c.path, mod.ReadOnly(), c.openFile, c.pageSize)
 	if err != nil {
 		return fmt.Errorf("could not open database: %w", err)
 	}

pkg/local_object_storage/writecache/util.go

@@ -10,11 +10,12 @@ import (
 )
 
 // OpenDB opens BoltDB instance for write-cache. Opens in read-only mode if ro is true.
-func OpenDB(p string, ro bool, openFile func(string, int, fs.FileMode) (*os.File, error)) (*bbolt.DB, error) {
+func OpenDB(p string, ro bool, openFile func(string, int, fs.FileMode) (*os.File, error), pageSize int) (*bbolt.DB, error) {
 	return bbolt.Open(filepath.Join(p, dbName), os.ModePerm, &bbolt.Options{
 		NoFreelistSync: true,
 		ReadOnly:       ro,
 		Timeout:        100 * time.Millisecond,
 		OpenFile:       openFile,
+		PageSize:       pageSize,
 	})
 }