serverPools := make(serverPoolsAvailableSpace, len(z.serverPools))

	storageInfos := make([][]*DiskInfo, len(z.serverPools))
	nSets := make([]int, len(z.serverPools))
	g := errgroup.WithNErrs(len(z.serverPools))
	for index := range z.serverPools {
		index := index