Metadata:         nil,
		Parts:            nil,
		Erasure: ErasureInfo{
			Algorithm:    ReedSolomon.String(),
			DataBlocks:   4,
			ParityBlocks: 2,
			BlockSize:    10000,
			Index:        1,
			Distribution: []int{1, 2, 3, 4, 5, 6, 7, 8},
			Checksums: []ChecksumInfo{{
				PartNumber: 1,
				Algorithm:  HighwayHash256S,
				Hash:       nil,
			}},
		},
		MarkDeleted:      false,
		Data:             data,

	// Calculate full object size.
	var objectSize int64

	// Calculate consolidated actual size.
	var objectActualSize int64

	// Order online disks in accordance with distribution order.
	// Order parts metadata in accordance with distribution order.
	onlineDisks, partsMetadata = shuffleDisksAndPartsMetadataByIndex(onlineDisks, partsMetadata, fi)

	// Save current erasure metadata for validation.
	currentFI := fi

          "expr": "sum by (bucket,range) (minio_bucket_objects_size_distribution{job=\"$scrape_jobs\"})",
          "format": "time_series",
          "instant": false,
          "interval": "",
          "intervalFactor": 1,
          "legendFormat": "{{bucket,range}}",
          "refId": "A",
          "step": 300
        }
      ],
      "title": "Object Size Distribution",
      "type": "bargauge"
    },
    {

	fi.Erasure.Index = j.ErasureIndex
	fi.Erasure.BlockSize = j.ErasureBlockSize
	fi.Erasure.DataBlocks = j.ErasureM
	fi.Erasure.ParityBlocks = j.ErasureN
	fi.Erasure.Distribution = make([]int, len(j.ErasureDist))
	for i := range j.ErasureDist {
		fi.Erasure.Distribution[i] = int(j.ErasureDist[i])
	}
	fi.DataDir = uuid.UUID(j.DataDir).String()

	if st, ok := j.MetaSys[metaTierStatus]; ok {
		fi.TransitionStatus = string(st)
	}

	NSScanner(ctx context.Context, updates chan<- DataUsageInfo, wantCycle uint32, scanMode madmin.HealScanMode) error
	BackendInfo() madmin.BackendInfo
	Legacy() bool // Only returns true for deployments which use CRCMOD as its object distribution algorithm.
	StorageInfo(ctx context.Context, metrics bool) StorageInfo
	LocalStorageInfo(ctx context.Context, metrics bool) StorageInfo

	// Bucket operations.

			actualSha256 := actualH.Sum(nil)

			z := obj.(*erasureServerPools)
			er := z.serverPools[0].getHashedSet(object)

			disks := er.getDisks()
			distribution := hashOrder(pathJoin(bucket, object), nDisks)
			shuffledDisks := shuffleDisks(disks, distribution)

			// remove last data shard
			err = removeAll(pathJoin(shuffledDisks[11].String(), bucket, object))
			if err != nil {

	setCount, setDriveCount int
	defaultParityCount      int

	poolIndex int

	// A channel to send the set index to the MRF when
	// any disk belonging to that set is connected
	setReconnectEvent chan int

	// Distribution algorithm of choice.
	distributionAlgo string
	deploymentID     [16]byte

	lastConnectDisksOpTime time.Time
}

func (s *erasureSets) getDiskMap() map[Endpoint]StorageAPI {

	const legacyJSON = `{"version":"1.0.1","format":"xl","stat":{"size":2016,"modTime":"2021-10-11T23:40:34.914361617Z"},"erasure":{"algorithm":"klauspost/reedsolomon/vandermonde","data":2,"parity":2,"blockSize":10485760,"index":2,"distribution":[2,3,4,1],"checksum":[{"name":"part.1","algorithm":"highwayhash256S"}]},"minio":{"release":"RELEASE.2019-12-30T05-45-39Z"},"meta":{"X-Minio-Internal-Server-Side-Encryption-Iv":"kInsJB/0yxyz/40ZI+lmQYJfZacDYqZsGh2wEiv+N50=","X-Minio-Internal-S...

//
// Whenever a branch is scanned, it is assumed that it will be un-compacted
// before it hits any of the above limits.
// This will make the branch rebalance itself when scanned if the distribution of objects has changed.

// scanDataFolder will scanner the basepath+cache.Info.Name and return an updated cache.
// The returned cache will always be valid, but may not be updated from the existing.