oSizes: sizeHistogram{0: 1, 1: 1, 2: 2, 4: 1},
		},
		{
			path:  "/dir1/dira",
			isNil: true,
		},
		{
			path:  "/nonexistying",
			isNil: true,
		},
	}

	for _, w := range want {
		p := path.Join(bucket, w.path)
		t.Run(p, func(t *testing.T) {
			e := got.find(p)
			if w.isNil {
				if e != nil {
					t.Error("want nil, got", e)
				}
				return
			}

		db.AddError(committer.Commit())
	} else {
		db.AddError(ErrInvalidTransaction)
	}
	return db
}

// Rollback rollbacks the changes in a transaction
func (db *DB) Rollback() *DB {
	if committer, ok := db.Statement.ConnPool.(TxCommitter); ok && committer != nil {
		if !reflect.ValueOf(committer).IsNil() {
			db.AddError(committer.Rollback())
		}

				err = msgp.WrapError(err, "DiskID")
				return
			}
		case "m":
			z.ScanMode, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "ScanMode")
				return
			}
		case "c":
			if dc.IsNil() {
				err = dc.ReadNil()
				if err != nil {
					err = msgp.WrapError(err, "Cache")
					return
				}
				z.Cache = nil
			} else {
				if z.Cache == nil {
					z.Cache = new(dataUsageCache)
				}

			if dc.IsNil() {
				err = dc.ReadNil()
				if err != nil {
					err = msgp.WrapError(err, "SmallerThan")
					return
				}
				z.SmallerThan = nil
			} else {
				if z.SmallerThan == nil {
					z.SmallerThan = new(string)
				}
				*z.SmallerThan, err = dc.ReadString()
				if err != nil {
					err = msgp.WrapError(err, "SmallerThan")
					return
				}
			}
		case "SkipErrs":
			if dc.IsNil() {

	for zb0001 > 0 {
		zb0001--
		field, err = dc.ReadMapKeyPtr()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		switch msgp.UnsafeString(field) {
		case "V2Obj":
			if dc.IsNil() {
				err = dc.ReadNil()
				if err != nil {
					err = msgp.WrapError(err, "ObjectV2")
					return
				}
				z.ObjectV2 = nil
			} else {
				if z.ObjectV2 == nil {
					z.ObjectV2 = new(struct {

				return
			}
		case "Started":
			z.Started, err = dc.ReadTime()
			if err != nil {
				err = msgp.WrapError(err, "Started")
				return
			}
		case "Replicate":
			if dc.IsNil() {
				err = dc.ReadNil()
				if err != nil {
					err = msgp.WrapError(err, "Replicate")
					return
				}
				z.Replicate = nil
			} else {
				if z.Replicate == nil {

					if !fieldValue.IsValid() {
						fieldValue = reflect.New(fieldType)
					} else if fieldValue.IsNil() {
						fieldValue.Set(reflect.New(fieldType))
					}
					fieldValue.Elem().Set(reflectV)
					return
				} else if reflectValType.ConvertibleTo(fieldType) {
					if fieldValue.IsNil() {
						fieldValue.Set(reflect.New(fieldType))
					}

					fieldValue.Elem().Set(reflectV.Convert(fieldType))

		return true
	}
	if x == nil || y == nil {
		return false
	}

	xval := reflect.ValueOf(x)
	yval := reflect.ValueOf(y)
	if xval.Kind() == reflect.Ptr && xval.IsNil() ||
		yval.Kind() == reflect.Ptr && yval.IsNil() {
		return false
	}

	if valuer, ok := x.(driver.Valuer); ok {
		x, _ = valuer.Value()
	}
	if valuer, ok := y.(driver.Valuer); ok {
		y, _ = valuer.Value()
	}

				return
			}
		case "Source":
			z.Source, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "Source")
				return
			}
		case "Quorum":
			if dc.IsNil() {
				err = dc.ReadNil()
				if err != nil {
					err = msgp.WrapError(err, "Quorum")
					return
				}
				z.Quorum = nil
			} else {
				if z.Quorum == nil {
					z.Quorum = new(int)
				}

				zb0002--
				var za0001 string
				za0001, err = dc.ReadString()
				if err != nil {
					err = msgp.WrapError(err, "M")
					return
				}
				var za0002 *SRStatus
				if dc.IsNil() {
					err = dc.ReadNil()
					if err != nil {
						err = msgp.WrapError(err, "M", za0001)
						return
					}
					za0002 = nil
				} else {
					if za0002 == nil {