// Header indicates if the etag should be preserved by client
	MinIOSourceETag = "x-minio-source-etag"

	// Writes expected write quorum
	MinIOWriteQuorum = "x-minio-write-quorum"

	// Reads expected read quorum
	MinIOReadQuorum = "x-minio-read-quorum"

	// Indicates if we are using default storage class and there was problem loading config
	// if this header is set to "true"

	// This test uses two FileInfo values that represent the same object but
	// have different parities. They occur in equal number of drives, but only
	// one has read quorum. commonParity should pick the parity corresponding to
	// the FileInfo which has read quorum.
	fi1 := FileInfo{
		Volume:         "mybucket",
		Name:           "myobject",
		VersionID:      "",
		IsLatest:       true,
		Deleted:        false,

| Minimum number of drives per server when server count is 4      | 01            |
| Maximum number of drives per server                             | no-limit      |
| Read quorum                                                     | N/2           |
| Write quorum                                                    | N/2+1         |

## Limits of S3 API

}

// WriteQuorum returns expected write quorum for this FileInfo
func (fi FileInfo) WriteQuorum(dquorum int) int {
	if fi.Deleted {
		return dquorum
	}
	quorum := fi.Erasure.DataBlocks
	if fi.Erasure.DataBlocks == fi.Erasure.ParityBlocks {
		quorum++
	}
	return quorum
}

// ReadQuorum returns expected read quorum for this FileInfo
func (fi FileInfo) ReadQuorum(dquorum int) int {
	if fi.Deleted {

sleep 1m

docker system prune -f || true
docker volume prune -f || true
docker volume rm $(docker volume ls -q -f dangling=true) || true

# Stop two nodes, one of each pool, to check that all S3 calls work while quorum is still there
[ "${MODE}" == "pools" ] && docker-compose -f minio-${MODE}.yaml stop minio2
[ "${MODE}" == "pools" ] && docker-compose -f minio-${MODE}.yaml stop minio6

		return fi, nil, errErasureReadQuorum
	}

	if writeQuorum < 0 {
		return fi, nil, errErasureWriteQuorum
	}

	quorum := readQuorum
	if write {
		quorum = writeQuorum
	}

	// List all online disks.
	_, modTime, etag := listOnlineDisks(storageDisks, partsMetadata, errs, quorum)

	if write {
		err = reduceWriteQuorumErrs(ctx, errs, objectOpIgnoredErrs, writeQuorum)
	} else {

				t.Errorf("Expected %s, got %s", tt.expectedError, err)
			}
			if tt.expectedReadQuorum != actualReadQuorum {
				t.Errorf("Expected Read Quorum %d, got %d", tt.expectedReadQuorum, actualReadQuorum)
			}
			if tt.expectedWriteQuorum != actualWriteQuorum {
				t.Errorf("Expected Write Quorum %d, got %d", tt.expectedWriteQuorum, actualWriteQuorum)
			}
		})
	}
}

		name        string
		input       [][]xlMetaV2ShallowVersion
		quorum      int
		reqVersions int
		want        []xlMetaV2ShallowVersion
	}{
		{
			name: "obj-on-one",
			input: [][]xlMetaV2ShallowVersion{
				0: {vDelMarker, vObj}, // disk 0
				1: {vDelMarker},       // disk 1
				2: {vDelMarker},       // disk 2
			},
			quorum:      2,
			reqVersions: 0,

func (er erasureObjects) getObjectInfoAndQuorum(ctx context.Context, bucket, object string, opts ObjectOptions) (objInfo ObjectInfo, wquorum int, err error) {
	fi, _, _, err := er.getObjectFileInfo(ctx, bucket, object, opts, false)
	if err != nil {
		return objInfo, er.defaultWQuorum(), toObjectErr(err, bucket, object)
	}

	wquorum = fi.WriteQuorum(er.defaultWQuorum())

	localDrives := cloneDrives(globalLocalDrivesMap)
	globalLocalDrivesMu.RUnlock()

	quorum := (len(localDrives) / 2)

	buckets = make([]BucketInfo, 0, 32)
	healBuckets := map[string]VolInfo{}

	// lists all unique buckets across drives.
	if err := listAllBuckets(ctx, localDrives, healBuckets, quorum); err != nil {
		return nil, err
	}

	// include deleted buckets in listBuckets output