You can also use `File()` with `UploadFile`, for example, to set additional metadata:

{* ../../docs_src/request_files/tutorial001_03_an_py39.py hl[9,15] *}

## Multiple File Uploads { #multiple-file-uploads }

It's possible to upload several files at the same time.

They would be associated to the same "form field" sent using "form data".

To use that, declare a list of `bytes` or `UploadFile`:

			ObjectOptions{Versioned: testCase.versioned})
		if err != nil {
			t.Fatalf("Test %d: Failed to upload a random object: %v", i+1, err)
		}

		// Step 3: Upload the object with some disks offline
		sets.erasureDisksMu.Lock()
		xl.getDisks = func() []StorageAPI {
			disks := make([]StorageAPI, len(origErasureDisks))
			copy(disks, origErasureDisks)
			disks[0] = nil
			disks[1] = nil

	}

	cache := store.lock()
	defer store.unlock()

	// Load existing policy mapping
	var mp MappedPolicy
	if !isGroup {
		if userType == stsUser {
			stsMap := xsync.NewMapOf[string, MappedPolicy]()

			// Attempt to load parent user mapping for STS accounts
			store.loadMappedPolicy(context.TODO(), name, stsUser, false, stsMap)

			mp, _ = stsMap.Load(name)
		} else {

	"github.com/minio/minio/internal/logger"
	"github.com/minio/mux"
	"github.com/minio/pkg/v3/policy"
	"github.com/minio/sio"
)

// Multipart objectAPIHandlers

// NewMultipartUploadHandler - New multipart upload.
// Notice: The S3 client can send secret keys in headers for encryption related jobs,
// the handler should ensure to remove these keys before sending them to the object layer.
// Currently these keys are:

	// 1. Initiate 2 uploads for the same object
	// 2. Upload 2 parts for the second upload
	// 3. Abort the second upload.
	// 4. Abort the first upload.
	// This will test abort upload when there are more than one upload IDs
	// and the case where there is only one upload ID.

	// construct HTTP request to initiate a NewMultipart upload.

	w := es.workers.Load()
	if w == nil || len(*w) == 0 {
		return nil
	}
	workers := *w
	return workers[h%uint64(len(workers))]
}

func (es *expiryState) ResizeWorkers(n int) {
	if n == 0 {
		n = 100
	}

	// Lock to avoid multiple resizes to happen at the same time.
	es.mu.Lock()
	defer es.mu.Unlock()
	var workers []chan expiryOp

	}
	return
}

// Parse bucket url queries for ?uploads
func getBucketMultipartResources(values url.Values) (prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int, encodingType string, errCode APIErrorCode) {
	errCode = ErrNone

	if values.Get("max-uploads") != "" {
		var err error
		if maxUploads, err = strconv.Atoi(values.Get("max-uploads")); err != nil {
			errCode = ErrInvalidMaxUploads
			return
		}

func (z *erasureServerPools) loadRebalanceMeta(ctx context.Context) error {
	r := &rebalanceMeta{}
	if err := r.load(ctx, z.serverPools[0]); err == nil {
		z.rebalMu.Lock()
		z.rebalMeta = r
		z.updateRebalanceStats(ctx)
		z.rebalMu.Unlock()
	} else if !errors.Is(err, errConfigNotFound) {
		rebalanceLogIf(ctx, fmt.Errorf("failed to load rebalance metadata, continue to restart rebalance as needed: %w", err))
	}
	return nil
}

	}

	return pReader, opts, nil
}

// Reload updates config by reloading remote tier config from config store.
func (config *TierConfigMgr) Reload(ctx context.Context, objAPI ObjectLayer) error {
	newConfig, err := loadTierConfig(ctx, objAPI)

	config.Lock()
	defer config.Unlock()

	switch err {
	case nil:
		break
	case errConfigNotFound: // nothing to reload

	if err != nil {
		t.Fatalf("%s: <ERROR> %s", instanceType, err)
	}
	if bytesBuffer.String() != "The specified multipart upload does not exist. The upload ID might be invalid, or the multipart upload might have been aborted or completed." {
		t.Errorf("%s: Invalid upload ID error mismatch.", instanceType)
	}
}

// Wrapper for calling testNonExistentBucketOperations for both Erasure and FS.