fix: support healing older content (#10076)

This PR adds support for healing older
content i.e from 2yrs, 1yr. Also handles
other situations where our config was
not encrypted yet.

This PR also ensures that our Listing
is consistent and quorum friendly,
such that we don't list partial objects

cmd/admin-heal-ops.go

@@ -63,7 +63,7 @@ var (
 	errHealStopSignalled = fmt.Errorf("heal stop signaled")
 
 	errFnHealFromAPIErr = func(ctx context.Context, err error) error {
-		apiErr := toAPIError(ctx, err)
+		apiErr := toAdminAPIErr(ctx, err)
 		return fmt.Errorf("Heal internal error: %s: %s",
 			apiErr.Code, apiErr.Description)
 	}
@@ -151,7 +151,7 @@ func (ahs *allHealState) stopHealSequence(path string) ([]byte, APIError) {
 	he, exists := ahs.getHealSequence(path)
 	if !exists {
 		hsp = madmin.HealStopSuccess{
-			ClientToken: "invalid",
+			ClientToken: "unknown",
 			StartTime:   UTCNow(),
 		}
 	} else {
@@ -193,21 +193,14 @@ func (ahs *allHealState) stopHealSequence(path string) ([]byte, APIError) {
 func (ahs *allHealState) LaunchNewHealSequence(h *healSequence) (
 	respBytes []byte, apiErr APIError, errMsg string) {
 
-	existsAndLive := false
-	he, exists := ahs.getHealSequence(pathJoin(h.bucket, h.object))
-	if exists {
-		existsAndLive = !he.hasEnded()
-	}
-
-	if existsAndLive {
-		// A heal sequence exists on the given path.
-		if h.forceStarted {
-			// stop the running heal sequence - wait for it to finish.
-			he.stop()
-			for !he.hasEnded() {
-				time.Sleep(1 * time.Second)
-			}
-		} else {
+	if h.forceStarted {
+		_, apiErr = ahs.stopHealSequence(pathJoin(h.bucket, h.object))
+		if apiErr.Code != "" {
+			return respBytes, apiErr, ""
+		}
+	} else {
+		oh, exists := ahs.getHealSequence(pathJoin(h.bucket, h.object))
+		if exists && !oh.hasEnded() {
 			errMsg = "Heal is already running on the given path " +
 				"(use force-start option to stop and start afresh). " +
 				fmt.Sprintf("The heal was started by IP %s at %s, token is %s",
@@ -224,7 +217,6 @@ func (ahs *allHealState) LaunchNewHealSequence(h *healSequence) (
 	hpath := pathJoin(h.bucket, h.object)
 	for k, hSeq := range ahs.healSeqMap {
 		if !hSeq.hasEnded() && (HasPrefix(k, hpath) || HasPrefix(hpath, k)) {
-
 			errMsg = "The provided heal sequence path overlaps with an existing " +
 				fmt.Sprintf("heal path: %s", k)
 			return nil, errorCodes.ToAPIErr(ErrHealOverlappingPaths), errMsg
@@ -249,7 +241,7 @@ func (ahs *allHealState) LaunchNewHealSequence(h *healSequence) (
 	})
 	if err != nil {
 		logger.LogIf(h.ctx, err)
-		return nil, toAPIError(h.ctx, err), ""
+		return nil, toAdminAPIErr(h.ctx, err), ""
 	}
 	return b, noError, ""
 }
@@ -264,8 +256,11 @@ func (ahs *allHealState) PopHealStatusJSON(hpath string,
 	// fetch heal state for given path
 	h, exists := ahs.getHealSequence(hpath)
 	if !exists {
-		// If there is no such heal sequence, return error.
-		return nil, ErrHealNoSuchProcess
+		// heal sequence doesn't exist, must have finished.
+		jbytes, err := json.Marshal(healSequenceStatus{
+			Summary: healFinishedStatus,
+		})
+		return jbytes, toAdminAPIErrCode(GlobalContext, err)
 	}
 
 	// Check if client-token is valid
@@ -606,8 +601,7 @@ func (h *healSequence) healSequenceStart() {
 	case <-h.ctx.Done():
 		h.mutex.Lock()
 		h.endTime = UTCNow()
-		h.currentStatus.Summary = healStoppedStatus
-		h.currentStatus.FailureDetail = errHealStopSignalled.Error()
+		h.currentStatus.Summary = healFinishedStatus
 		h.mutex.Unlock()
 
 		// drain traverse channel so the traversal

cmd/config-migrate.go

@@ -24,6 +24,7 @@ import (
 	"path"
 	"path/filepath"
 	"strings"
+	"unicode/utf8"
 
 	"github.com/minio/minio/cmd/config"
 	"github.com/minio/minio/cmd/config/cache"
@@ -2506,7 +2507,7 @@ func checkConfigVersion(objAPI ObjectLayer, configFile string, version string) (
 		return false, nil, err
 	}
 
-	if globalConfigEncrypted {
+	if globalConfigEncrypted && !utf8.Valid(data) {
 		data, err = madmin.DecryptData(globalActiveCred.String(), bytes.NewReader(data))
 		if err != nil {
 			if err == madmin.ErrMaliciousData {

cmd/config.go

@@ -23,6 +23,7 @@ import (
 	"path"
 	"sort"
 	"strings"
+	"unicode/utf8"
 
 	jsoniter "github.com/json-iterator/go"
 	"github.com/minio/minio/cmd/config"
@@ -63,7 +64,7 @@ func listServerConfigHistory(ctx context.Context, objAPI ObjectLayer, withData b
 				if err != nil {
 					return nil, err
 				}
-				if globalConfigEncrypted {
+				if globalConfigEncrypted && !utf8.Valid(data) {
 					data, err = madmin.DecryptData(globalActiveCred.String(), bytes.NewReader(data))
 					if err != nil {
 						return nil, err
@@ -102,7 +103,7 @@ func readServerConfigHistory(ctx context.Context, objAPI ObjectLayer, uuidKV str
 		return nil, err
 	}
 
-	if globalConfigEncrypted {
+	if globalConfigEncrypted && !utf8.Valid(data) {
 		data, err = madmin.DecryptData(globalActiveCred.String(), bytes.NewReader(data))
 	}
 
@@ -155,7 +156,7 @@ func readServerConfig(ctx context.Context, objAPI ObjectLayer) (config.Config, e
 		return nil, err
 	}
 
-	if globalConfigEncrypted {
+	if globalConfigEncrypted && !utf8.Valid(configData) {
 		configData, err = madmin.DecryptData(globalActiveCred.String(), bytes.NewReader(configData))
 		if err != nil {
 			if err == madmin.ErrMaliciousData {

cmd/erasure-healing.go

@@ -204,7 +204,7 @@ func shouldHealObjectOnDisk(erErr, dataErr error, meta FileInfo, quorumModTime t
 		return true
 	}
 	if erErr == nil {
-		// If er.meta was read fine but there may be problem with the part.N files.
+		// If xl.meta was read fine but there may be problem with the part.N files.
 		if IsErr(dataErr, []error{
 			errFileNotFound,
 			errFileVersionNotFound,
@@ -212,6 +212,9 @@ func shouldHealObjectOnDisk(erErr, dataErr error, meta FileInfo, quorumModTime t
 		}...) {
 			return true
 		}
+		if meta.XLV1 {
+			return true
+		}
 		if !quorumModTime.Equal(meta.ModTime) {
 			return true
 		}
@@ -356,6 +359,7 @@ func (er erasureObjects) healObject(ctx context.Context, bucket string, object s
 
 	// We write at temporary location and then rename to final location.
 	tmpID := mustGetUUID()
+	migrateDataDir := mustGetUUID()
 
 	for i := range outDatedDisks {
 		if outDatedDisks[i] == nil {
@@ -396,6 +400,9 @@ func (er erasureObjects) healObject(ctx context.Context, bucket string, object s
 				}
 				checksumInfo := partsMetadata[i].Erasure.GetChecksumInfo(partNumber)
 				partPath := pathJoin(object, latestMeta.DataDir, fmt.Sprintf("part.%d", partNumber))
+				if latestMeta.XLV1 {
+					partPath = pathJoin(object, fmt.Sprintf("part.%d", partNumber))
+				}
 				readers[i] = newBitrotReader(disk, bucket, partPath, tillOffset, checksumAlgo, checksumInfo.Hash, erasure.ShardSize())
 			}
 			writers := make([]io.Writer, len(outDatedDisks))
@@ -404,6 +411,9 @@ func (er erasureObjects) healObject(ctx context.Context, bucket string, object s
 					continue
 				}
 				partPath := pathJoin(tmpID, latestMeta.DataDir, fmt.Sprintf("part.%d", partNumber))
+				if latestMeta.XLV1 {
+					partPath = pathJoin(tmpID, migrateDataDir, fmt.Sprintf("part.%d", partNumber))
+				}
 				writers[i] = newBitrotWriter(disk, minioMetaTmpBucket, partPath, tillOffset, DefaultBitrotAlgorithm, erasure.ShardSize())
 			}
 			err = erasure.Heal(ctx, readers, writers, partSize)
@@ -427,6 +437,9 @@ func (er erasureObjects) healObject(ctx context.Context, bucket string, object s
 					continue
 				}
 
+				if partsMetadata[i].XLV1 {
+					partsMetadata[i].DataDir = migrateDataDir
+				}
 				partsMetadata[i].AddObjectPart(partNumber, "", partSize, partActualSize)
 				partsMetadata[i].Erasure.AddChecksumInfo(ChecksumInfo{
 					PartNumber: partNumber,
@@ -458,7 +471,7 @@ func (er erasureObjects) healObject(ctx context.Context, bucket string, object s
 		}
 
 		// Attempt a rename now from healed data to final location.
-		if err = disk.RenameData(minioMetaTmpBucket, tmpID, latestMeta.DataDir, bucket, object); err != nil {
+		if err = disk.RenameData(minioMetaTmpBucket, tmpID, partsMetadata[0].DataDir, bucket, object); err != nil {
 			if err != errIsNotRegular && err != errFileNotFound {
 				logger.LogIf(ctx, err)
 			}

cmd/erasure-zones.go

@@ -681,10 +681,9 @@ func (z *erasureZones) listObjectsNonSlash(ctx context.Context, bucket, prefix,
 	endWalkCh := make(chan struct{})
 	defer close(endWalkCh)
 
-	const ndisks = 3
 	for _, zone := range z.zones {
 		zonesEntryChs = append(zonesEntryChs,
-			zone.startMergeWalksN(ctx, bucket, prefix, "", true, endWalkCh, ndisks))
+			zone.startMergeWalksN(ctx, bucket, prefix, "", true, endWalkCh, zone.drivesPerSet))
 	}
 
 	var objInfos []ObjectInfo
@@ -709,8 +708,8 @@ func (z *erasureZones) listObjectsNonSlash(ctx context.Context, bucket, prefix,
 			break
 		}
 
-		if quorumCount < ndisks-1 {
-			// Skip entries which are not found on upto ndisks.
+		if quorumCount < z.zones[0].drivesPerSet/2 {
+			// Skip entries which are not found on upto ndisks/2.
 			continue
 		}
 
@@ -797,18 +796,17 @@ func (z *erasureZones) listObjectsSplunk(ctx context.Context, bucket, prefix, ma
 	var zonesEntryChs [][]FileInfoCh
 	var zonesEndWalkCh []chan struct{}
 
-	const ndisks = 3
 	for _, zone := range z.zones {
 		entryChs, endWalkCh := zone.poolSplunk.Release(listParams{bucket, recursive, marker, prefix})
 		if entryChs == nil {
 			endWalkCh = make(chan struct{})
-			entryChs = zone.startSplunkMergeWalksN(ctx, bucket, prefix, marker, endWalkCh, ndisks)
+			entryChs = zone.startSplunkMergeWalksN(ctx, bucket, prefix, marker, endWalkCh, zone.drivesPerSet)
 		}
 		zonesEntryChs = append(zonesEntryChs, entryChs)
 		zonesEndWalkCh = append(zonesEndWalkCh, endWalkCh)
 	}
 
-	entries := mergeZonesEntriesCh(zonesEntryChs, maxKeys, ndisks)
+	entries := mergeZonesEntriesCh(zonesEntryChs, maxKeys, z.zones[0].drivesPerSet)
 	if len(entries.Files) == 0 {
 		return loi, nil
 	}
@@ -888,18 +886,17 @@ func (z *erasureZones) listObjects(ctx context.Context, bucket, prefix, marker,
 	var zonesEntryChs [][]FileInfoCh
 	var zonesEndWalkCh []chan struct{}
 
-	const ndisks = 3
 	for _, zone := range z.zones {
 		entryChs, endWalkCh := zone.pool.Release(listParams{bucket, recursive, marker, prefix})
 		if entryChs == nil {
 			endWalkCh = make(chan struct{})
-			entryChs = zone.startMergeWalksN(ctx, bucket, prefix, marker, recursive, endWalkCh, ndisks)
+			entryChs = zone.startMergeWalksN(ctx, bucket, prefix, marker, recursive, endWalkCh, zone.drivesPerSet)
 		}
 		zonesEntryChs = append(zonesEntryChs, entryChs)
 		zonesEndWalkCh = append(zonesEndWalkCh, endWalkCh)
 	}
 
-	entries := mergeZonesEntriesCh(zonesEntryChs, maxKeys, ndisks)
+	entries := mergeZonesEntriesCh(zonesEntryChs, maxKeys, z.zones[0].drivesPerSet)
 	if len(entries.Files) == 0 {
 		return loi, nil
 	}
@@ -1118,8 +1115,8 @@ func mergeZonesEntriesVersionsCh(zonesEntryChs [][]FileInfoVersionsCh, maxKeys i
 			break
 		}
 
-		if quorumCount < ndisks-1 {
-			// Skip entries which are not found on upto ndisks.
+		if quorumCount < ndisks/2 {
+			// Skip entries which are not found on upto ndisks/2.
 			continue
 		}
 
@@ -1149,8 +1146,8 @@ func mergeZonesEntriesCh(zonesEntryChs [][]FileInfoCh, maxKeys int, ndisks int)
 			break
 		}
 
-		if quorumCount < ndisks-1 {
-			// Skip entries which are not found on upto ndisks.
+		if quorumCount < ndisks/2 {
+			// Skip entries which are not found on upto ndisks/2.
 			continue
 		}
 
@@ -1292,18 +1289,17 @@ func (z *erasureZones) listObjectVersions(ctx context.Context, bucket, prefix, m
 	var zonesEntryChs [][]FileInfoVersionsCh
 	var zonesEndWalkCh []chan struct{}
 
-	const ndisks = 3
 	for _, zone := range z.zones {
 		entryChs, endWalkCh := zone.poolVersions.Release(listParams{bucket, recursive, marker, prefix})
 		if entryChs == nil {
 			endWalkCh = make(chan struct{})
-			entryChs = zone.startMergeWalksVersionsN(ctx, bucket, prefix, marker, recursive, endWalkCh, ndisks)
+			entryChs = zone.startMergeWalksVersionsN(ctx, bucket, prefix, marker, recursive, endWalkCh, zone.drivesPerSet)
 		}
 		zonesEntryChs = append(zonesEntryChs, entryChs)
 		zonesEndWalkCh = append(zonesEndWalkCh, endWalkCh)
 	}
 
-	entries := mergeZonesEntriesVersionsCh(zonesEntryChs, maxKeys, ndisks)
+	entries := mergeZonesEntriesVersionsCh(zonesEntryChs, maxKeys, z.zones[0].drivesPerSet)
 	if len(entries.FilesVersions) == 0 {
 		return loi, nil
 	}

cmd/iam-etcd-store.go

@@ -25,6 +25,7 @@ import (
 	"strings"
 	"sync"
 	"time"
+	"unicode/utf8"
 
 	jwtgo "github.com/dgrijalva/jwt-go"
 	"github.com/minio/minio-go/v7/pkg/set"
@@ -120,7 +121,7 @@ func (ies *IAMEtcdStore) loadIAMConfig(item interface{}, path string) error {
 		return err
 	}
 
-	if globalConfigEncrypted {
+	if globalConfigEncrypted && !utf8.Valid(pdata) {
 		pdata, err = madmin.DecryptData(globalActiveCred.String(), bytes.NewReader(pdata))
 		if err != nil {
 			return err

cmd/iam-object-store.go

@@ -24,6 +24,7 @@ import (
 	"strings"
 	"sync"
 	"time"
+	"unicode/utf8"
 
 	jwtgo "github.com/dgrijalva/jwt-go"
 
@@ -223,7 +224,7 @@ func (iamOS *IAMObjectStore) loadIAMConfig(item interface{}, path string) error
 	if err != nil {
 		return err
 	}
-	if globalConfigEncrypted {
+	if globalConfigEncrypted && !utf8.Valid(data) {
 		data, err = madmin.DecryptData(globalActiveCred.String(), bytes.NewReader(data))
 		if err != nil {
 			return err

cmd/storage-datatypes.go

@@ -80,6 +80,9 @@ type FileInfo struct {
 	// DataDir of the file
 	DataDir string
 
+	// Indicates if this object is still in V1 format.
+	XLV1 bool
+
 	// Date and time when the file was last modified, if Deleted
 	// is 'true' this value represents when while was deleted.
 	ModTime time.Time

cmd/xl-storage-format-utils.go

@@ -50,6 +50,7 @@ func getFileInfoVersions(xlMetaBuf []byte, volume, path string) (FileInfoVersion
 	}
 
 	fi.IsLatest = true // No versions so current version is latest.
+	fi.XLV1 = true     // indicates older version
 	return FileInfoVersions{
 		Volume:        volume,
 		Name:          path,
@@ -76,5 +77,6 @@ func getFileInfo(xlMetaBuf []byte, volume, path, versionID string) (FileInfo, er
 	if err == errFileNotFound && versionID != "" {
 		return fi, errFileVersionNotFound
 	}
+	fi.XLV1 = true // indicates older version
 	return fi, err
 }

cmd/xl-storage.go

@@ -1775,6 +1775,9 @@ func (s *xlStorage) CheckParts(volume, path string, fi FileInfo) error {
 
 	for _, part := range fi.Parts {
 		partPath := pathJoin(path, fi.DataDir, fmt.Sprintf("part.%d", part.Number))
+		if fi.XLV1 {
+			partPath = pathJoin(path, fmt.Sprintf("part.%d", part.Number))
+		}
 		filePath := pathJoin(volumeDir, partPath)
 		if err = checkPathLength(filePath); err != nil {
 			return err
@@ -2380,6 +2383,9 @@ func (s *xlStorage) VerifyFile(volume, path string, fi FileInfo) (err error) {
 	for _, part := range fi.Parts {
 		checksumInfo := erasure.GetChecksumInfo(part.Number)
 		partPath := pathJoin(volumeDir, path, fi.DataDir, fmt.Sprintf("part.%d", part.Number))
+		if fi.XLV1 {
+			partPath = pathJoin(volumeDir, path, fmt.Sprintf("part.%d", part.Number))
+		}
 		if err := s.bitrotVerify(partPath,
 			erasure.ShardFileSize(part.Size),
 			checksumInfo.Algorithm,