// NewMultipartUpload metadata shuffling.
func shuffleDisksAndPartsMetadataByIndex(disks []StorageAPI, metaArr []FileInfo, fi FileInfo) (shuffledDisks []StorageAPI, shuffledPartsMetadata []FileInfo) {
	shuffledDisks = make([]StorageAPI, len(disks))
	shuffledPartsMetadata = make([]FileInfo, len(disks))
	distribution := fi.Erasure.Distribution

	var inconsistent int

	store := &genericregistry.Store{
		NewFunc:                   func() runtime.Object { return &storageapi.CSINode{} },
		NewListFunc:               func() runtime.Object { return &storageapi.CSINodeList{} },
		DefaultQualifiedResource:  storageapi.Resource("csinodes"),
		SingularQualifiedResource: storageapi.Resource("csinode"),

		CreateStrategy:      csinode.Strategy,
		UpdateStrategy:      csinode.Strategy,

	etcd3testing "k8s.io/apiserver/pkg/storage/etcd3/testing"
	storageapi "k8s.io/kubernetes/pkg/apis/storage"
	_ "k8s.io/kubernetes/pkg/apis/storage/install"
	"k8s.io/kubernetes/pkg/registry/registrytest"
)

func newStorage(t *testing.T) (*REST, *etcd3testing.EtcdTestServer) {
	etcdStorage, server := registrytest.NewEtcdStorageForResource(t, storageapi.SchemeGroupVersion.WithResource("csistoragecapacities").GroupResource())

	etcd3testing "k8s.io/apiserver/pkg/storage/etcd3/testing"
	storageapi "k8s.io/kubernetes/pkg/apis/storage"
	"k8s.io/kubernetes/pkg/registry/registrytest"
)

func newStorage(t *testing.T) (*REST, *etcd3testing.EtcdTestServer) {
	etcdStorage, server := registrytest.NewEtcdStorageForResource(t, storageapi.SchemeGroupVersion.WithResource("volumeattributesclasses").GroupResource())
	restOptions := generic.RESTOptions{

}

// Returns whole-file bitrot writer.
func newWholeBitrotWriter(disk StorageAPI, volume, filePath string, algo BitrotAlgorithm, shardSize int64) io.WriteCloser {
	return &wholeBitrotWriter{disk, volume, filePath, shardSize, algo.New()}
}

// Implementation to verify bitrot for the whole file.
type wholeBitrotReader struct {
	disk       StorageAPI
	volume     string
	filePath   string

// are set to nil.
// - latest (in time) of the maximally occurring modTime(s), which has at least quorum occurrences.
func listOnlineDisks(disks []StorageAPI, partsMetadata []FileInfo, errs []error, quorum int) (onlineDisks []StorageAPI, modTime time.Time, etag string) {
	onlineDisks = make([]StorageAPI, len(disks))

	// List all the file commit ids from parts metadata.
	modTimes := listObjectModtimes(partsMetadata, errs)

// OfflineDisk represents an unavailable disk.
var OfflineDisk StorageAPI // zero value is nil

// erasureObjects - Implements ER object layer.
type erasureObjects struct {
	setDriveCount      int
	defaultParityCount int

	setIndex  int
	poolIndex int

	// getDisks returns list of storageAPIs.
	getDisks func() []StorageAPI

	// getLockers returns list of remote and local lockers.

)

// Storage REST server, storageRESTReceiver and StorageRESTClient are
// inter-dependent, below test functions are sufficient to test all of them.
func testStorageAPIDiskInfo(t *testing.T, storage StorageAPI) {
	testCases := []struct {
		expectErr bool
	}{
		{true},
	}

	for i, testCase := range testCases {
		_, err := storage.DiskInfo(context.Background(), DiskInfoOptions{Metrics: true})

package cmd

import (
	"context"
	"fmt"
	"io"
	"math/rand"
	"sync"
	"time"

	"github.com/minio/pkg/v3/sync/errgroup"
)

func (er erasureObjects) getOnlineDisks() (newDisks []StorageAPI) {
	disks := er.getDisks()
	var wg sync.WaitGroup
	var mu sync.Mutex
	r := rand.New(rand.NewSource(time.Now().UnixNano()))
	for _, i := range r.Perm(len(disks)) {
		i := i
		wg.Add(1)
		go func() {

			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
			return disks
		}
		sets.erasureDisksMu.Unlock()