feat: add the arg batch-size

to support the feature of small chunks mergence  in nydus, we need to add the arg batch-size

Signed-off-by: Desiki-high <ding_yadong@foxmail.com>

pkg/converter/convert_unix.go

@@ -479,6 +479,7 @@ func packFromTar(ctx context.Context, dest io.Writer, opt PackOption) (io.WriteC
 				PrefetchPatterns: opt.PrefetchPatterns,
 				AlignedChunk:     opt.AlignedChunk,
 				ChunkSize:        opt.ChunkSize,
+				BatchSize:        opt.BatchSize,
 				Compressor:       opt.Compressor,
 				Timeout:          opt.Timeout,
 

pkg/converter/tool/builder.go

@@ -39,6 +39,7 @@ type PackOption struct {
 	OCIRef           bool
 	AlignedChunk     bool
 	ChunkSize        string
+	BatchSize        string
 	Timeout          *time.Duration
 
 	Features Features
@@ -132,6 +133,9 @@ func buildPackArgs(option PackOption) []string {
 	if option.ChunkSize != "" {
 		args = append(args, "--chunk-size", option.ChunkSize)
 	}
+	if option.BatchSize != "" {
+		args = append(args, "--batch-size", option.BatchSize)
+	}
 	args = append(args, option.SourcePath)
 
 	return args

pkg/converter/types.go

@@ -71,6 +71,8 @@ type PackOption struct {
 	AlignedChunk bool
 	// ChunkSize sets the size of data chunks, must be power of two and between 0x1000-0x1000000.
 	ChunkSize string
+	// BacthSize sets the size of batch data chunks, must be power of two and between 0x1000-0x1000000 or zero.
+	BatchSize string
 	// Backend uploads blobs generated by nydus-image builder to a backend storage.
 	Backend Backend
 	// Timeout cancels execution once exceed the specified time.