})
	return bucketName, f, nil
}

// prepare test backend.
// create FS/Erasure/ErasureSet backend.
// return object layer, backend disks.
func prepareTestBackend(ctx context.Context, instanceType string) (ObjectLayer, []string, error) {
	switch instanceType {
	// Total number of disks for Erasure sets backend is set to 32.
	case ErasureSetsTestStr:
		return prepareErasureSets32(ctx)

		return false
	}
	return true
}

// GetBandwidth gets the bandwidth for the buckets requested.
func (s *peerRESTServer) GetBandwidth(params *grid.URLValues) (*bandwidth.BucketBandwidthReport, *grid.RemoteErr) {
	buckets := params.Values().Get("buckets")
	selectBuckets := b.SelectBuckets(buckets)
	return globalBucketMonitor.GetReport(selectBuckets), nil
}

				defer cancel()

				buckets, err = z.s3Peer.ListBuckets(ctx, opts)
				if err != nil {
					return nil, err
				}
				for i := range buckets {
					createdAt, err := globalBucketMetadataSys.CreatedAt(buckets[i].Name)
					if err == nil {
						buckets[i].Created = createdAt
					}
				}
				return buckets, nil
			},
		)

		return listBucketsCache.Get()

	return path, nil
}

// Make Erasure backend meta volumes.
func makeFormatErasureMetaVolumes(disk StorageAPI) error {
	if disk == nil {
		return errDiskNotFound
	}
	volumes := []string{
		minioMetaTmpDeletedBucket, // creates .minio.sys/tmp as well as .minio.sys/tmp/.trash
		minioMetaMultipartBucket,  // creates .minio.sys/multipart
		dataUsageBucket,           // creates .minio.sys/buckets

		// Test listing an object with uncommon delimiter and matching prefix
		{testBuckets[4], "file1/", "", "guidSplunk", 1000, resultCases[35], nil, true},
		// Test listing at prefix with expected prefix markers
		{testBuckets[5], "dir/", "", SlashSeparator, 1, resultCases[36], nil, true},
		// Test listing with prefix match
		{testBuckets[5], "foo/201910/11", "", "", 1000, resultCases[37], nil, true},

		// Init and run test on ErasureSD backend with signature v4.
		{serverType: "ErasureSD", signer: signerV4},
		// Init and run test on ErasureSD backend, with tls enabled.
		{serverType: "ErasureSD", signer: signerV4, secure: true},
		// Init and run test on Erasure backend.
		{serverType: "Erasure", signer: signerV4},
		// Init and run test on ErasureSet backend.
		{serverType: "ErasureSet", signer: signerV4},
	}

}

// DeletePolicy - deletes policy from storage and cache. When this called in
// response to a notification (i.e. isFromNotification = true), it skips the
// validation of policy usage and the attempt to delete in the backend as well
// (as this is already done by the notifying node).
func (store *IAMStoreSys) DeletePolicy(ctx context.Context, policy string, isFromNotification bool) error {
	if policy == "" {
		return errInvalidArgument

	}
}

// Benchmarks for ObjectLayer.PutObjectPart().
// The intent is to benchmark PutObjectPart for various sizes ranging from few bytes to 100MB.
// Also each of these Benchmarks are run both Erasure and FS backends.

// BenchmarkPutObjectPart5MbFS - Benchmark FS.PutObjectPart() for object size of 5MB.
func BenchmarkPutObjectPart5MbFS(b *testing.B) {
	benchmarkPutObjectPart(b, "FS", 5*humanize.MiByte)
}

		HTTPStatusCode: http.StatusNotFound,
	},
	ErrObjectLockConfigurationNotAllowed: {
		Code:           "InvalidBucketState",
		Description:    "Object Lock configuration cannot be enabled on existing buckets",
		HTTPStatusCode: http.StatusConflict,
	},
	ErrNoSuchCORSConfiguration: {
		Code:           "NoSuchCORSConfiguration",
		Description:    "The CORS configuration does not exist",

}

// LoadUser - reloads a specific user from backend disks or etcd.
func (sys *IAMSys) LoadUser(ctx context.Context, objAPI ObjectLayer, accessKey string, userType IAMUserType) error {
	if !sys.Initialized() {
		return errServerNotInitialized
	}

	return sys.store.UserNotificationHandler(ctx, accessKey, userType)
}

// LoadServiceAccount - reloads a specific service account from backend disks or etcd.