azureblob: remove 100MB upper limit on chunk_size as it is no longer needed

backend/azureblob/azureblob.go

@@ -50,7 +50,6 @@ const (
 	timeFormatOut         = "2006-01-02T15:04:05.000000000Z07:00"
 	storageDefaultBaseURL = "blob.core.windows.net"
 	defaultChunkSize      = 4 * fs.Mebi
-	maxChunkSize          = 100 * fs.Mebi
 	defaultAccessTier     = azblob.AccessTierNone
 	maxTryTimeout         = time.Hour * 24 * 365 //max time of an azure web request response window (whether or not data is flowing)
 	// Default storage account, key and blob endpoint for emulator support,
@@ -133,7 +132,7 @@ msi_client_id, or msi_mi_res_id parameters.`,
 			Advanced: true,
 		}, {
 			Name: "chunk_size",
-			Help: `Upload chunk size (<= 100 MiB).
+			Help: `Upload chunk size.
 
 Note that this is stored in memory and there may be up to
 "--transfers" * "--azureblob-upload-concurrency" chunks stored at once
@@ -437,9 +436,6 @@ func checkUploadChunkSize(cs fs.SizeSuffix) error {
 	if cs < minChunkSize {
 		return fmt.Errorf("%s is less than %s", cs, minChunkSize)
 	}
-	if cs > maxChunkSize {
-		return fmt.Errorf("%s is greater than %s", cs, maxChunkSize)
-	}
 	return nil
 }
 

backend/azureblob/azureblob_test.go

@@ -20,9 +20,7 @@ func TestIntegration(t *testing.T) {
 		RemoteName:    "TestAzureBlob:",
 		NilObject:     (*Object)(nil),
 		TiersToTest:   []string{"Hot", "Cool"},
-		ChunkedUpload: fstests.ChunkedUploadConfig{
-			MaxChunkSize: maxChunkSize,
-		},
+		ChunkedUpload: fstests.ChunkedUploadConfig{},
 	})
 }