wg.Add(n)
	for range n {
		go func() {
			defer wg.Done()
			// Sync start.
			<-start
			if err := obj.MakeBucket(GlobalContext, bucketName1, MakeBucketOptions{}); err != nil {
				if _, ok := err.(BucketExists); !ok {
					t.Logf("unexpected error: %T: %v", err, err)
					return
				}
				mu.Lock()
				errs++
				mu.Unlock()
				return
			}
			mu.Lock()
			ok++
			mu.Unlock()
		}()
	}

		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(apiErr), r.URL)
		return
	}

	// Proceed to creating a bucket.
	if err := objectAPI.MakeBucket(ctx, bucket, opts); err != nil {
		if _, ok := err.(BucketExists); ok {
			// Though bucket exists locally, we send the site-replication
			// hook to ensure all sites have this bucket. If the hook
			// succeeds, the client will still receive a bucket exists
			// message.

			if err != nil {
				return err
			}

			ctx = lkctx.Context()
			defer lk.Unlock(lkctx)
		}
	}

	if err := z.s3Peer.MakeBucket(ctx, bucket, opts); err != nil {
		if _, ok := err.(BucketExists); !ok {
			// Delete created buckets, ignoring errors.
			z.DeleteBucket(context.Background(), bucket, DeleteBucketOptions{
				NoLock:     true,
				NoRecreate: true,
			})
		}
		return err
	}

	case BucketAlreadyOwnedByYou:
		apiErr = ErrBucketAlreadyOwnedByYou
	case BucketNotEmpty:
		apiErr = ErrBucketNotEmpty
	case BucketAlreadyExists:
		apiErr = ErrBucketAlreadyExists
	case BucketExists:
		apiErr = ErrBucketAlreadyOwnedByYou
	case ObjectNotFound:
		apiErr = ErrNoSuchKey
	case MethodNotAllowed:
		apiErr = ErrMethodNotAllowed
	case ObjectLocked:
		apiErr = ErrObjectLocked

		if clnt == nil {
			return sameTarget, toAPIError(ctx, BucketRemoteTargetNotFound{Bucket: bucket})
		}
		if opts.CheckRemoteBucket { // validate remote bucket
			found, err := clnt.BucketExists(ctx, arn.Bucket)
			if err != nil {
				return sameTarget, errorCodes.ToAPIErrWithErr(ErrRemoteDestinationNotFoundError, err)
			}
			if !found {