Russ Cox <******@****.***> 1410149331 -0400

			t.Fatal(err)
		}
	}

	format := newFormatErasureV3(1, 8)
	format.Erasure.DistributionAlgo = formatErasureVersionV2DistributionAlgoV1
	formats := make([]*formatErasureV3, 8)

	for j := range 8 {
		newFormat := format.Clone()
		newFormat.Erasure.This = format.Erasure.Sets[0][j]
		formats[j] = newFormat
	}

	formats[1] = nil
	expThis := formats[2].Erasure.This
	formats[2].Erasure.This = ""

			osErrToFileErr(err)))
	}

	// format-V2 struct is exactly same as format-V1 except that version is "3"
	// which indicates the simplified multipart backend.
	formatV3 := formatErasureV3{}
	formatV3.Version = formatV2.Version
	formatV3.Format = formatV2.Format
	formatV3.Erasure = formatV2.Erasure
	formatV3.Erasure.Version = formatErasureVersionV3

	return json.Marshal(formatV3)
}

	FormatGNU

	// Schily's tar format, which is incompatible with USTAR.
	// This does not cover STAR extensions to the PAX format; these fall under
	// the PAX format.
	formatSTAR

	formatMax
)

func (f Format) has(f2 Format) bool   { return f&f2 != 0 }
func (f *Format) mayBe(f2 Format)     { *f |= f2 }
func (f *Format) mayOnlyBe(f2 Format) { *f &= f2 }
func (f *Format) mustNotBe(f2 Format) { *f &^= f2 }

		formats: FormatUSTAR | FormatPAX | FormatGNU,
	}}

	for i, v := range vectors {
		formats, paxHdrs, err := v.header.allowedFormats()
		if formats != v.formats {
			t.Errorf("test %d, allowedFormats(): got %v, want %v", i, formats, v.formats)
		}
		if formats&FormatPAX > 0 && !maps.Equal(paxHdrs, v.paxHdrs) && !(len(paxHdrs) == 0 && len(v.paxHdrs) == 0) {

		return nil, errFirstDiskWait
	}

	format, err = getFormatErasureInQuorum(formatConfigs)
	if err != nil {
		var drivesNotFound int
		for _, format := range formatConfigs {
			if format != nil {
				continue
			}
			drivesNotFound++
		}
		return nil, fmt.Errorf("%w (offline-drives=%d/%d)", err, drivesNotFound, len(formatConfigs))
	}

	if format.ID == "" {

			}
		}

		// Save new formats `format.json` on unformatted disks.
		for index, format := range tmpNewFormats {
			if storageDisks[index] == nil || format == nil {
				continue
			}
			if err := saveFormatErasure(storageDisks[index], format, formatOpID); err != nil {
				healingLogIf(ctx, fmt.Errorf("Drive %s failed to write updated 'format.json': %v", storageDisks[index], err))

			wantFormat.mayBe(FormatUSTAR) // PAX implies USTAR allowed too
		}
		format.mayOnlyBe(wantFormat) // Set union of formats allowed and format wanted
	}
	if format == FormatUnknown {
		switch h.Format {
		case FormatUSTAR:
			err = headerError{"Format specifies USTAR", whyNoUSTAR, whyOnlyPAX, whyOnlyGNU}
		case FormatPAX:
			err = headerError{"Format specifies PAX", whyNoPAX, whyOnlyGNU}
		case FormatGNU:

func recover() any

// The print built-in function formats its arguments in an
// implementation-specific way and writes the result to standard error.
// Print is useful for bootstrapping and debugging; it is not guaranteed
// to stay in the language.
func print(args ...Type)

// The println built-in function formats its arguments in an
// implementation-specific way and writes the result to standard error.

            assertFalse(ModelVersionUtils.isValidModelVersion(version));
        }

        @ParameterizedTest
        @MethodSource("provideInvalidVersions")
        @DisplayName("should reject invalid version formats")
        void shouldRejectInvalidVersionFormats(String version, String description) {
            assertFalse(
                    ModelVersionUtils.isValidModelVersion(version), "Should reject " + description + ": " + version);