updateInProgress: true,
			count:            v.count + 1,
			bucket:           bucket,
		}
	}
}

func (sys *BucketTargetSys) markRefreshDone(bucket, arn string) {
	sys.aMutex.Lock()
	defer sys.aMutex.Unlock()
	if v, ok := sys.arnErrsMap[arn]; ok {
		sys.arnErrsMap[arn] = arnErrs{
			updateInProgress: false,
			count:            v.count,
			bucket:           bucket,
		}
	}
}

	for _, format := range formats {
		if format == nil {
			continue
		}
		formatCountMap[format.Drives()]++
	}

	maxDrives := 0
	maxCount := 0
	for drives, count := range formatCountMap {
		if count > maxCount {
			maxCount = count
			maxDrives = drives
		}
	}

	if maxDrives == 0 {
		return nil, errErasureReadQuorum
	}

	if maxCount < len(formats)/2 {
		return nil, errErasureReadQuorum

| `minio_cluster_health_drives_offline_count`        | `gauge` | Count of offline drives in the cluster         |        |
| `minio_cluster_health_drives_online_count`         | `gauge` | Count of online drives in the cluster          |        |
| `minio_cluster_health_drives_count`                | `gauge` | Count of all drives in the cluster             |        |

	for i := 1; i < len(totalSizes); i++ {
		result = gcd(result, totalSizes[i])
	}
	return result
}

// isValidSetSize - checks whether given count is a valid set size for erasure coding.
var isValidSetSize = func(count uint64) bool {
	return (count >= setSizes[0] && count <= setSizes[len(setSizes)-1])
}

func commonSetDriveCount(divisibleSize uint64, setCounts []uint64) (setSize uint64) {

						decomLogIf(ctx, err)
						failure = true
					}
					z.poolMetaMutex.Lock()
					z.poolMeta.CountItem(idx, 0, failure)
					z.poolMetaMutex.Unlock()
					if !failure {
						// Success keep a count.
						decommissioned++
					}
					auditLogDecom(ctx, "DecomCopyDeleteMarker", bi.Name, version.Name, versionID, err)
					continue
				}

				var failure, ignore bool

func (cred Credentials) IsTemp() bool {
	return cred.SessionToken != "" && !cred.Expiration.IsZero() && !cred.Expiration.Equal(timeSentinel)
}

// IsServiceAccount - returns whether credential is a service account or not
func (cred Credentials) IsServiceAccount() bool {
	_, ok := cred.Claims[iamPolicyClaimNameSA]
	return cred.ParentUser != "" && ok
}

	}

	user, _, s3Err := getReqAccessKeyV4(r, globalSite.Region, serviceSTS)
	if s3Err != ErrNone {
		return auth.Credentials{}, s3Err
	}

	// Temporary credentials or Service accounts cannot generate further temporary credentials.
	if user.IsTemp() || user.IsServiceAccount() {
		return auth.Credentials{}, ErrAccessDenied
	}

	// Session tokens are not allowed in STS AssumeRole requests.

	filter := func(list []uint64) (commonCount uint64) {
		max := 0
		signatureMap := map[uint64]int{}
		for _, v := range list {
			signatureMap[v]++
		}
		for ops, count := range signatureMap {
			if max < count && commonCount < ops {
				max = count
				commonCount = ops
			}
		}
		if max < readQuorum {
			return 0
		}
		return commonCount
	}

	commonWrite = filter(writes)

}

// Cache structure and compaction:
//
// A cache structure will be kept with a tree of usages.
// The cache is a tree structure where each keeps track of its children.
//
// An uncompacted branch contains a count of the files only directly at the
// branch level, and contains link to children branches or leaves.
//
// The leaves are "compacted" based on a number of properties.

}

// SetDriveCount returns the current drives per set.
func (s *erasureSets) SetDriveCount() int {
	return s.setDriveCount
}

// ParityCount returns the default parity count used while erasure
// coding objects
func (s *erasureSets) ParityCount() int {
	return s.defaultParityCount
}

// StorageInfo - combines output of StorageInfo across all erasure coded object sets.