g.Go(func() error {
			// Get the set where it would be placed.
			storageInfos[index] = getDiskInfos(ctx, pool.getHashedSet(object).getDisks()...)
			return nil
		}, index)
	}

	// Wait for the go routines.
	g.Wait()

	for i, zinfo := range storageInfos {
		if zinfo == nil {
			serverPools[i] = poolAvailableSpace{Index: i}
			continue
		}
		var available uint64
		if !isMinioMetaBucketName(bucket) {

	}
	c.updatedAt = time.Now()
	return nil
}

// IAMStorageAPI defines an interface for the IAM persistence layer
type IAMStorageAPI interface {
	// The role of the read-write lock is to prevent go routines from
	// concurrently reading and writing the IAM storage. The (r)lock()
	// functions return the iamCache. The cache can be safely written to
	// only when returned by `lock()`.
	lock() *iamCache
	unlock()

			if onlineDisks[index] == nil {
				return errDiskNotFound
			}
			return onlineDisks[index].UpdateMetadata(ctx, bucket, object, fi, opts)
		}, index)
	}

	// Wait for all the routines.
	mErrs := g.Wait()

	return reduceWriteQuorumErrs(ctx, mErrs, objectOpIgnoredErrs, fi.WriteQuorum(er.defaultWQuorum()))
}

// updateObjectMeta will update the metadata of a file.