for: 5m
    labels:
      severity: critical
    annotations:
      summary: "Instance {{ $labels.server }} has lost quorum on pool {{ $labels.pool }} on set {{ $labels.set }}"
      description: "MinIO instance {{ $labels.server }} of job {{ $labels.job }} has lost quorum on pool {{ $labels.pool }} on set {{ $labels.set }} for more than 5 minutes."
```

## Verify the configuration and alerts

func isObjectDangling(metaArr []FileInfo, errs []error, dataErrsByPart map[int][]int) (validMeta FileInfo, ok bool) {
	// We can consider an object data not reliable
	// when xl.meta is not found in read quorum disks.
	// or when xl.meta is not readable in read quorum disks.
	notFoundMetaErrs, nonActionableMetaErrs := danglingMetaErrsCount(errs)

	notFoundPartsErrs, nonActionablePartsErrs := 0, 0
	for _, dataErrs := range dataErrsByPart {

// Encode reads from the reader, erasure-encodes the data and writes to the writers.
func (e *Erasure) Encode(ctx context.Context, src io.Reader, writers []io.Writer, buf []byte, quorum int) (total int64, err error) {
	writer := &multiWriter{
		writers:     writers,
		writeQuorum: quorum,
		errs:        make([]error, len(writers)),
	}

	for {
		var blocks [][]byte
		n, err := io.ReadFull(src, buf)
		if err != nil {

package cmd

import "errors"

// errErasureReadQuorum - did not meet read quorum.
var errErasureReadQuorum = errors.New("Read failed. Insufficient number of drives online")

// errErasureWriteQuorum - did not meet write quorum.
var errErasureWriteQuorum = errors.New("Write failed. Insufficient number of drives online")

		"Overall write quorum across pools and sets")
	erasureSetOverallHealthMD = NewGaugeMD(erasureSetOverallHealth,
		"Overall health across pools and sets (1=healthy, 0=unhealthy)")
	erasureSetReadQuorumMD = NewGaugeMD(erasureSetReadQuorum,
		"Read quorum for the erasure set in a pool", poolIDL, setIDL)
	erasureSetWriteQuorumMD = NewGaugeMD(erasureSetWriteQuorum,
		"Write quorum for the erasure set in a pool", poolIDL, setIDL)

	Group           bool   // indicates if it was a group lock.
	Owner           string // Owner represents the UUID of the owner who originally requested the lock.
	Quorum          int    // Quorum represents the quorum required for this lock to be active.
	idx             int    `msg:"-"` // index of the lock in the lockMap.
}

// isWriteLock returns whether the lock is a write or read lock.

			if succModTimes != nil {
				fis[i].SuccessorModTime = succModTimes[i]
				fis[i].IsLatest = succModTimes[i].IsZero()
			}
			if numVersions != nil {
				fis[i].NumVersions = numVersions[i]
			}
			quorum--
			if quorum == 0 {
				break
			}
		}
		return fis
	}

	commonSuccModTime := time.Date(2023, time.August, 25, 0, 0, 0, 0, time.UTC)
	succModTimesInQuorum := make([]time.Time, 16)

				return entries, io.EOF
			}
			partN++
			retries = 0
		}
	}
}

// getListQuorum interprets list quorum values and returns appropriate
// acceptable quorum expected for list operations
func getListQuorum(quorum string, driveCount int) int {
	switch quorum {
	case "disk":
		return 1
	case "reduced":
		return 2
	case "optimal":
		return (driveCount + 1) / 2
	case "auto":

			return nil, err
		}

		return format, nil
	}

	// Return error when quorum unformatted disks - indicating we are
	// waiting for first server to be online.
	unformattedDisks := quorumUnformattedDisks(sErrs)
	if unformattedDisks && !firstDisk {
		return nil, errNotFirstDisk
	}

	// Return error when quorum unformatted disks but waiting for rest
	// of the servers to be online.

		}

		if isErrReadQuorum(pinfo.Err) && !opts.MetadataChg {
			// read quorum is returned when the object is visibly
			// present but its unreadable, we simply ask the writes to
			// schedule to this pool instead. If there is no quorum
			// it will fail anyways, however if there is quorum available
			// with enough disks online but sufficiently inconsistent to