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		// resulting in a file with compressed size > 0 but uncompressed size ==
		// 0. We still want to fail when a directory has associated uncompressed
		// data, but we are tolerant of cases where the uncompressed size is
		// zero but compressed size is not.
		if f.UncompressedSize64 != 0 {
			return &dirReader{ErrFormat}, nil
		} else {
			return &dirReader{io.EOF}, nil
		}
	}

		// Add IP/port combo to set. Note that we set Replace to false here - we _did_ previously
		// set it to true, but in theory that could mask weird scenarios where K8S triggers events out of order ->
		// an add(sameIPreused) then delete(originalIP).
		// Which will result in the new pod starting to fail healthchecks.
		//

	return valid
}

// isTierNameInUse returns tier type and true if there exists a remote tier by
// name tierName, otherwise returns madmin.Unsupported and false. N B this
// function is meant for internal use, where the caller is expected to take
// appropriate locks.
func (config *TierConfigMgr) isTierNameInUse(tierName string) (madmin.TierType, bool) {
	if t, ok := config.Tiers[tierName]; ok {
		return t.Type, true
	}

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