minio/cmd/erasure-healing.go
Anis Elleuch 4c81201f95
fix: healing delete marker on versioned buckets (#10530)
Healing was not working correctly in the distributed mode because
errFileVersionNotFound was not properly converted in storage rest
client.

Besides, fixing the healing delete marker is not working as expected.
2020-09-21 15:16:16 -07:00

802 lines
25 KiB
Go

/*
* MinIO Cloud Storage, (C) 2016-2020 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cmd
import (
"context"
"errors"
"fmt"
"io"
"sync"
"time"
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/pkg/madmin"
"github.com/minio/minio/pkg/sync/errgroup"
)
// Heals a bucket if it doesn't exist on one of the disks, additionally
// also heals the missing entries for bucket metadata files
// `policy.json, notification.xml, listeners.json`.
func (er erasureObjects) HealBucket(ctx context.Context, bucket string, dryRun, remove bool) (
result madmin.HealResultItem, err error) {
if !dryRun {
defer ObjectPathUpdated(bucket)
}
storageDisks := er.getDisks()
storageEndpoints := er.getEndpoints()
// get write quorum for an object
writeQuorum := getWriteQuorum(len(storageDisks))
// Heal bucket.
return healBucket(ctx, storageDisks, storageEndpoints, bucket, writeQuorum, dryRun)
}
// Heal bucket - create buckets on disks where it does not exist.
func healBucket(ctx context.Context, storageDisks []StorageAPI, storageEndpoints []string, bucket string, writeQuorum int,
dryRun bool) (res madmin.HealResultItem, err error) {
// Initialize sync waitgroup.
g := errgroup.WithNErrs(len(storageDisks))
// Disk states slices
beforeState := make([]string, len(storageDisks))
afterState := make([]string, len(storageDisks))
// Make a volume entry on all underlying storage disks.
for index := range storageDisks {
index := index
g.Go(func() error {
if storageDisks[index] == nil {
beforeState[index] = madmin.DriveStateOffline
afterState[index] = madmin.DriveStateOffline
return errDiskNotFound
}
if _, serr := storageDisks[index].StatVol(ctx, bucket); serr != nil {
if serr == errDiskNotFound {
beforeState[index] = madmin.DriveStateOffline
afterState[index] = madmin.DriveStateOffline
return serr
}
if serr != errVolumeNotFound {
beforeState[index] = madmin.DriveStateCorrupt
afterState[index] = madmin.DriveStateCorrupt
return serr
}
beforeState[index] = madmin.DriveStateMissing
afterState[index] = madmin.DriveStateMissing
// mutate only if not a dry-run
if dryRun {
return nil
}
return serr
}
beforeState[index] = madmin.DriveStateOk
afterState[index] = madmin.DriveStateOk
return nil
}, index)
}
errs := g.Wait()
reducedErr := reduceWriteQuorumErrs(ctx, errs, bucketOpIgnoredErrs, writeQuorum-1)
if reducedErr == errVolumeNotFound {
return res, nil
}
// Initialize heal result info
res = madmin.HealResultItem{
Type: madmin.HealItemBucket,
Bucket: bucket,
DiskCount: len(storageDisks),
}
for i := range beforeState {
res.Before.Drives = append(res.Before.Drives, madmin.HealDriveInfo{
UUID: "",
Endpoint: storageEndpoints[i],
State: beforeState[i],
})
}
// Initialize sync waitgroup.
g = errgroup.WithNErrs(len(storageDisks))
// Make a volume entry on all underlying storage disks.
for index := range storageDisks {
index := index
g.Go(func() error {
if beforeState[index] == madmin.DriveStateMissing {
makeErr := storageDisks[index].MakeVol(ctx, bucket)
if makeErr == nil {
afterState[index] = madmin.DriveStateOk
}
return makeErr
}
return errs[index]
}, index)
}
errs = g.Wait()
reducedErr = reduceWriteQuorumErrs(ctx, errs, bucketOpIgnoredErrs, writeQuorum)
if reducedErr != nil {
return res, reducedErr
}
for i := range afterState {
res.After.Drives = append(res.After.Drives, madmin.HealDriveInfo{
UUID: "",
Endpoint: storageEndpoints[i],
State: afterState[i],
})
}
return res, nil
}
// listAllBuckets lists all buckets from all disks. It also
// returns the occurrence of each buckets in all disks
func listAllBuckets(storageDisks []StorageAPI, healBuckets map[string]VolInfo) (err error) {
for _, disk := range storageDisks {
if disk == nil {
continue
}
var volsInfo []VolInfo
volsInfo, err = disk.ListVols(context.TODO())
if err != nil {
if IsErrIgnored(err, bucketMetadataOpIgnoredErrs...) {
continue
}
return err
}
for _, volInfo := range volsInfo {
// StorageAPI can send volume names which are
// incompatible with buckets - these are
// skipped, like the meta-bucket.
if isReservedOrInvalidBucket(volInfo.Name, false) {
continue
}
// always save unique buckets across drives.
if _, ok := healBuckets[volInfo.Name]; !ok {
healBuckets[volInfo.Name] = volInfo
}
}
}
return nil
}
// Only heal on disks where we are sure that healing is needed. We can expand
// this list as and when we figure out more errors can be added to this list safely.
func shouldHealObjectOnDisk(erErr, dataErr error, meta FileInfo, quorumModTime time.Time) bool {
switch {
case errors.Is(erErr, errFileNotFound) || errors.Is(erErr, errFileVersionNotFound):
return true
case errors.Is(erErr, errCorruptedFormat):
return true
}
if erErr == nil {
// If xl.meta was read fine but there may be problem with the part.N files.
if IsErr(dataErr, []error{
errFileNotFound,
errFileVersionNotFound,
errFileCorrupt,
}...) {
return true
}
if !quorumModTime.Equal(meta.ModTime) {
return true
}
if meta.XLV1 {
return true
}
}
return false
}
// Heals an object by re-writing corrupt/missing erasure blocks.
func (er erasureObjects) healObject(ctx context.Context, bucket string, object string,
partsMetadata []FileInfo, errs []error, latestFileInfo FileInfo,
dryRun bool, remove bool, scanMode madmin.HealScanMode) (result madmin.HealResultItem, err error) {
dataBlocks := latestFileInfo.Erasure.DataBlocks
storageDisks := er.getDisks()
storageEndpoints := er.getEndpoints()
// List of disks having latest version of the object er.meta
// (by modtime).
latestDisks, modTime := listOnlineDisks(storageDisks, partsMetadata, errs)
// List of disks having all parts as per latest er.meta.
availableDisks, dataErrs := disksWithAllParts(ctx, latestDisks, partsMetadata, errs, bucket, object, scanMode)
// Initialize heal result object
result = madmin.HealResultItem{
Type: madmin.HealItemObject,
Bucket: bucket,
Object: object,
DiskCount: len(storageDisks),
ParityBlocks: len(storageDisks) / 2,
DataBlocks: len(storageDisks) / 2,
// Initialize object size to -1, so we can detect if we are
// unable to reliably find the object size.
ObjectSize: -1,
}
// Loop to find number of disks with valid data, per-drive
// data state and a list of outdated disks on which data needs
// to be healed.
outDatedDisks := make([]StorageAPI, len(storageDisks))
numAvailableDisks := 0
disksToHealCount := 0
for i, v := range availableDisks {
driveState := ""
switch {
case v != nil:
driveState = madmin.DriveStateOk
numAvailableDisks++
// If data is sane on any one disk, we can
// extract the correct object size.
result.ObjectSize = partsMetadata[i].Size
if partsMetadata[i].Erasure.ParityBlocks > 0 && partsMetadata[i].Erasure.DataBlocks > 0 {
result.ParityBlocks = partsMetadata[i].Erasure.ParityBlocks
result.DataBlocks = partsMetadata[i].Erasure.DataBlocks
}
case errs[i] == errDiskNotFound, dataErrs[i] == errDiskNotFound:
driveState = madmin.DriveStateOffline
case errs[i] == errFileNotFound, errs[i] == errFileVersionNotFound, errs[i] == errVolumeNotFound:
fallthrough
case dataErrs[i] == errFileNotFound, dataErrs[i] == errFileVersionNotFound, dataErrs[i] == errVolumeNotFound:
driveState = madmin.DriveStateMissing
default:
// all remaining cases imply corrupt data/metadata
driveState = madmin.DriveStateCorrupt
}
if shouldHealObjectOnDisk(errs[i], dataErrs[i], partsMetadata[i], modTime) {
outDatedDisks[i] = storageDisks[i]
disksToHealCount++
result.Before.Drives = append(result.Before.Drives, madmin.HealDriveInfo{
UUID: "",
Endpoint: storageEndpoints[i],
State: driveState,
})
result.After.Drives = append(result.After.Drives, madmin.HealDriveInfo{
UUID: "",
Endpoint: storageEndpoints[i],
State: driveState,
})
continue
}
result.Before.Drives = append(result.Before.Drives, madmin.HealDriveInfo{
UUID: "",
Endpoint: storageEndpoints[i],
State: driveState,
})
result.After.Drives = append(result.After.Drives, madmin.HealDriveInfo{
UUID: "",
Endpoint: storageEndpoints[i],
State: driveState,
})
}
// If less than read quorum number of disks have all the parts
// of the data, we can't reconstruct the erasure-coded data.
if numAvailableDisks < dataBlocks {
// Check if er.meta, and corresponding parts are also missing.
if m, ok := isObjectDangling(partsMetadata, errs, dataErrs); ok {
writeQuorum := m.Erasure.DataBlocks + 1
if m.Erasure.DataBlocks == 0 {
writeQuorum = getWriteQuorum(len(storageDisks))
}
if !dryRun && remove {
if latestFileInfo.VersionID == "" {
err = er.deleteObject(ctx, bucket, object, writeQuorum)
} else {
err = er.deleteObjectVersion(ctx, bucket, object, writeQuorum, FileInfo{VersionID: latestFileInfo.VersionID})
}
}
return defaultHealResult(latestFileInfo, storageDisks, storageEndpoints, errs, bucket, object), err
}
return result, toObjectErr(errErasureReadQuorum, bucket, object)
}
if disksToHealCount == 0 {
// Nothing to heal!
return result, nil
}
// After this point, only have to repair data on disk - so
// return if it is a dry-run
if dryRun {
return result, nil
}
// Latest FileInfo for reference. If a valid metadata is not
// present, it is as good as object not found.
latestMeta, pErr := pickValidFileInfo(ctx, partsMetadata, modTime, dataBlocks)
if pErr != nil {
return result, toObjectErr(pErr, bucket, object)
}
cleanFileInfo := func(fi FileInfo) FileInfo {
// Returns a copy of the 'fi' with checksums and parts nil'ed.
nfi := fi
nfi.Erasure.Checksums = nil
nfi.Parts = nil
return nfi
}
// We write at temporary location and then rename to final location.
tmpID := mustGetUUID()
migrateDataDir := mustGetUUID()
for i := range outDatedDisks {
if outDatedDisks[i] == nil {
continue
}
partsMetadata[i] = cleanFileInfo(latestMeta)
}
dataDir := latestMeta.DataDir
if latestMeta.XLV1 {
dataDir = migrateDataDir
}
if !latestMeta.Deleted {
result.DataBlocks = latestMeta.Erasure.DataBlocks
result.ParityBlocks = latestMeta.Erasure.ParityBlocks
// Reorder so that we have data disks first and parity disks next.
latestDisks = shuffleDisks(availableDisks, latestMeta.Erasure.Distribution)
outDatedDisks = shuffleDisks(outDatedDisks, latestMeta.Erasure.Distribution)
partsMetadata = shufflePartsMetadata(partsMetadata, latestMeta.Erasure.Distribution)
// Heal each part. erasureHealFile() will write the healed
// part to .minio/tmp/uuid/ which needs to be renamed later to
// the final location.
erasure, err := NewErasure(ctx, latestMeta.Erasure.DataBlocks,
latestMeta.Erasure.ParityBlocks, latestMeta.Erasure.BlockSize)
if err != nil {
return result, toObjectErr(err, bucket, object)
}
erasureInfo := latestMeta.Erasure
for partIndex := 0; partIndex < len(latestMeta.Parts); partIndex++ {
partSize := latestMeta.Parts[partIndex].Size
partActualSize := latestMeta.Parts[partIndex].ActualSize
partNumber := latestMeta.Parts[partIndex].Number
tillOffset := erasure.ShardFileOffset(0, partSize, partSize)
readers := make([]io.ReaderAt, len(latestDisks))
checksumAlgo := erasureInfo.GetChecksumInfo(partNumber).Algorithm
for i, disk := range latestDisks {
if disk == OfflineDisk {
continue
}
checksumInfo := partsMetadata[i].Erasure.GetChecksumInfo(partNumber)
partPath := pathJoin(object, 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))
for i, disk := range outDatedDisks {
if disk == OfflineDisk {
continue
}
partPath := pathJoin(tmpID, dataDir, fmt.Sprintf("part.%d", partNumber))
writers[i] = newBitrotWriter(disk, minioMetaTmpBucket, partPath, tillOffset, DefaultBitrotAlgorithm, erasure.ShardSize())
}
err = erasure.Heal(ctx, readers, writers, partSize)
closeBitrotReaders(readers)
closeBitrotWriters(writers)
if err != nil {
return result, toObjectErr(err, bucket, object)
}
// outDatedDisks that had write errors should not be
// written to for remaining parts, so we nil it out.
for i, disk := range outDatedDisks {
if disk == OfflineDisk {
continue
}
// A non-nil stale disk which did not receive
// a healed part checksum had a write error.
if writers[i] == nil {
outDatedDisks[i] = nil
disksToHealCount--
continue
}
partsMetadata[i].DataDir = dataDir
partsMetadata[i].AddObjectPart(partNumber, "", partSize, partActualSize)
partsMetadata[i].Erasure.AddChecksumInfo(ChecksumInfo{
PartNumber: partNumber,
Algorithm: checksumAlgo,
Hash: bitrotWriterSum(writers[i]),
})
}
// If all disks are having errors, we give up.
if disksToHealCount == 0 {
return result, fmt.Errorf("all disks had write errors, unable to heal")
}
}
}
defer er.deleteObject(ctx, minioMetaTmpBucket, tmpID, len(storageDisks)/2+1)
// Generate and write `xl.meta` generated from other disks.
outDatedDisks, err = writeUniqueFileInfo(ctx, outDatedDisks, minioMetaTmpBucket, tmpID,
partsMetadata, diskCount(outDatedDisks))
if err != nil {
return result, toObjectErr(err, bucket, object)
}
// Rename from tmp location to the actual location.
for i, disk := range outDatedDisks {
if disk == OfflineDisk {
continue
}
// Attempt a rename now from healed data to final location.
if err = disk.RenameData(ctx, minioMetaTmpBucket, tmpID, partsMetadata[i].DataDir, bucket, object); err != nil {
if err != errIsNotRegular && err != errFileNotFound {
logger.LogIf(ctx, err)
}
return result, toObjectErr(err, bucket, object)
}
for i, v := range result.Before.Drives {
if v.Endpoint == disk.String() {
result.After.Drives[i].State = madmin.DriveStateOk
}
}
}
// Set the size of the object in the heal result
result.ObjectSize = latestMeta.Size
return result, nil
}
// healObjectDir - heals object directory specifically, this special call
// is needed since we do not have a special backend format for directories.
func (er erasureObjects) healObjectDir(ctx context.Context, bucket, object string, dryRun bool, remove bool) (hr madmin.HealResultItem, err error) {
storageDisks := er.getDisks()
storageEndpoints := er.getEndpoints()
// Initialize heal result object
hr = madmin.HealResultItem{
Type: madmin.HealItemObject,
Bucket: bucket,
Object: object,
DiskCount: len(storageDisks),
ParityBlocks: getDefaultParityBlocks(len(storageDisks)),
DataBlocks: getDefaultDataBlocks(len(storageDisks)),
ObjectSize: 0,
}
hr.Before.Drives = make([]madmin.HealDriveInfo, len(storageDisks))
hr.After.Drives = make([]madmin.HealDriveInfo, len(storageDisks))
errs := statAllDirs(ctx, storageDisks, bucket, object)
danglingObject := isObjectDirDangling(errs)
if danglingObject {
if !dryRun && remove {
var wg sync.WaitGroup
// Remove versions in bulk for each disk
for index, disk := range storageDisks {
if disk == nil {
continue
}
wg.Add(1)
go func(index int, disk StorageAPI) {
defer wg.Done()
_ = disk.DeleteFile(ctx, bucket, object)
}(index, disk)
}
wg.Wait()
}
}
// Prepare object creation in all disks
for i, err := range errs {
drive := storageEndpoints[i]
switch err {
case nil:
hr.Before.Drives[i] = madmin.HealDriveInfo{Endpoint: drive, State: madmin.DriveStateOk}
hr.After.Drives[i] = madmin.HealDriveInfo{Endpoint: drive, State: madmin.DriveStateOk}
case errDiskNotFound:
hr.Before.Drives[i] = madmin.HealDriveInfo{State: madmin.DriveStateOffline}
hr.After.Drives[i] = madmin.HealDriveInfo{State: madmin.DriveStateOffline}
case errVolumeNotFound, errFileNotFound:
// Bucket or prefix/directory not found
hr.Before.Drives[i] = madmin.HealDriveInfo{Endpoint: drive, State: madmin.DriveStateMissing}
hr.After.Drives[i] = madmin.HealDriveInfo{Endpoint: drive, State: madmin.DriveStateMissing}
default:
hr.Before.Drives[i] = madmin.HealDriveInfo{Endpoint: drive, State: madmin.DriveStateCorrupt}
hr.After.Drives[i] = madmin.HealDriveInfo{Endpoint: drive, State: madmin.DriveStateCorrupt}
}
}
if dryRun || danglingObject {
return hr, nil
}
for i, err := range errs {
if err == errVolumeNotFound || err == errFileNotFound {
// Bucket or prefix/directory not found
merr := storageDisks[i].MakeVol(ctx, pathJoin(bucket, object))
switch merr {
case nil, errVolumeExists:
hr.After.Drives[i].State = madmin.DriveStateOk
case errDiskNotFound:
hr.After.Drives[i].State = madmin.DriveStateOffline
default:
logger.LogIf(ctx, merr)
hr.After.Drives[i].State = madmin.DriveStateCorrupt
}
}
}
return hr, nil
}
// Populates default heal result item entries with possible values when we are returning prematurely.
// This is to ensure that in any circumstance we are not returning empty arrays with wrong values.
func defaultHealResult(latestFileInfo FileInfo, storageDisks []StorageAPI, storageEndpoints []string, errs []error, bucket, object string) madmin.HealResultItem {
// Initialize heal result object
result := madmin.HealResultItem{
Type: madmin.HealItemObject,
Bucket: bucket,
Object: object,
DiskCount: len(storageDisks),
// Initialize object size to -1, so we can detect if we are
// unable to reliably find the object size.
ObjectSize: -1,
}
if latestFileInfo.IsValid() {
result.ObjectSize = latestFileInfo.Size
}
for index, disk := range storageDisks {
if disk == nil {
result.Before.Drives = append(result.Before.Drives, madmin.HealDriveInfo{
UUID: "",
Endpoint: storageEndpoints[index],
State: madmin.DriveStateOffline,
})
result.After.Drives = append(result.After.Drives, madmin.HealDriveInfo{
UUID: "",
Endpoint: storageEndpoints[index],
State: madmin.DriveStateOffline,
})
continue
}
driveState := madmin.DriveStateCorrupt
switch errs[index] {
case errFileNotFound, errVolumeNotFound:
driveState = madmin.DriveStateMissing
}
result.Before.Drives = append(result.Before.Drives, madmin.HealDriveInfo{
UUID: "",
Endpoint: storageEndpoints[index],
State: driveState,
})
result.After.Drives = append(result.After.Drives, madmin.HealDriveInfo{
UUID: "",
Endpoint: storageEndpoints[index],
State: driveState,
})
}
if !latestFileInfo.IsValid() {
// Default to most common configuration for erasure blocks.
result.ParityBlocks = getDefaultParityBlocks(len(storageDisks))
result.DataBlocks = getDefaultDataBlocks(len(storageDisks))
} else {
result.ParityBlocks = latestFileInfo.Erasure.ParityBlocks
result.DataBlocks = latestFileInfo.Erasure.DataBlocks
}
return result
}
// Stat all directories.
func statAllDirs(ctx context.Context, storageDisks []StorageAPI, bucket, prefix string) []error {
g := errgroup.WithNErrs(len(storageDisks))
for index, disk := range storageDisks {
if disk == nil {
continue
}
index := index
g.Go(func() error {
entries, err := storageDisks[index].ListDir(ctx, bucket, prefix, 1)
if err != nil {
return err
}
if len(entries) > 0 {
return errVolumeNotEmpty
}
return nil
}, index)
}
return g.Wait()
}
// ObjectDir is considered dangling/corrupted if any only
// if total disks - a combination of corrupted and missing
// files is lesser than N/2+1 number of disks.
func isObjectDirDangling(errs []error) (ok bool) {
var found int
var notFound int
var foundNotEmpty int
var otherFound int
for _, readErr := range errs {
if readErr == nil {
found++
} else if readErr == errFileNotFound || readErr == errVolumeNotFound {
notFound++
} else if readErr == errVolumeNotEmpty {
foundNotEmpty++
} else {
otherFound++
}
}
return found+foundNotEmpty+otherFound < notFound
}
// Object is considered dangling/corrupted if any only
// if total disks - a combination of corrupted and missing
// files is lesser than number of data blocks.
func isObjectDangling(metaArr []FileInfo, errs []error, dataErrs []error) (validMeta FileInfo, ok bool) {
// We can consider an object data not reliable
// when er.meta is not found in read quorum disks.
// or when er.meta is not readable in read quorum disks.
var notFoundErasureMeta, corruptedErasureMeta int
for _, readErr := range errs {
if errors.Is(readErr, errFileNotFound) || errors.Is(readErr, errFileVersionNotFound) {
notFoundErasureMeta++
} else if errors.Is(readErr, errCorruptedFormat) {
corruptedErasureMeta++
}
}
var notFoundParts int
for i := range dataErrs {
// Only count part errors, if the error is not
// same as er.meta error. This is to avoid
// double counting when both parts and er.meta
// are not available.
if errs[i] != dataErrs[i] {
if IsErr(dataErrs[i], []error{
errFileNotFound,
errFileVersionNotFound,
}...) {
notFoundParts++
}
}
}
for _, m := range metaArr {
if !m.IsValid() {
continue
}
validMeta = m
break
}
if validMeta.Deleted {
return validMeta, false
}
// We couldn't find any valid meta we are indeed corrupted, return true right away.
if validMeta.Erasure.DataBlocks == 0 {
return validMeta, true
}
// We have valid meta, now verify if we have enough files with parity blocks.
return validMeta, corruptedErasureMeta+notFoundErasureMeta+notFoundParts > validMeta.Erasure.ParityBlocks
}
// HealObject - heal the given object, automatically deletes the object if stale/corrupted if `remove` is true.
func (er erasureObjects) HealObject(ctx context.Context, bucket, object, versionID string, opts madmin.HealOpts) (hr madmin.HealResultItem, err error) {
// Create context that also contains information about the object and bucket.
// The top level handler might not have this information.
reqInfo := logger.GetReqInfo(ctx)
var newReqInfo *logger.ReqInfo
if reqInfo != nil {
newReqInfo = logger.NewReqInfo(reqInfo.RemoteHost, reqInfo.UserAgent, reqInfo.DeploymentID, reqInfo.RequestID, reqInfo.API, bucket, object)
} else {
newReqInfo = logger.NewReqInfo("", "", globalDeploymentID, "", "Heal", bucket, object)
}
healCtx := logger.SetReqInfo(GlobalContext, newReqInfo)
// Healing directories handle it separately.
if HasSuffix(object, SlashSeparator) {
return er.healObjectDir(healCtx, bucket, object, opts.DryRun, opts.Remove)
}
storageDisks := er.getDisks()
storageEndpoints := er.getEndpoints()
// Read metadata files from all the disks
partsMetadata, errs := readAllFileInfo(healCtx, storageDisks, bucket, object, versionID)
// Check if the object is dangling, if yes and user requested
// remove we simply delete it from namespace.
if m, ok := isObjectDangling(partsMetadata, errs, []error{}); ok {
writeQuorum := m.Erasure.DataBlocks + 1
if m.Erasure.DataBlocks == 0 {
writeQuorum = getWriteQuorum(len(storageDisks))
}
if !opts.DryRun && opts.Remove {
if versionID == "" {
er.deleteObject(healCtx, bucket, object, writeQuorum)
} else {
er.deleteObjectVersion(healCtx, bucket, object, writeQuorum, FileInfo{VersionID: versionID})
}
}
err = reduceReadQuorumErrs(ctx, errs, nil, writeQuorum-1)
return defaultHealResult(FileInfo{}, storageDisks, storageEndpoints, errs, bucket, object), toObjectErr(err, bucket, object)
}
latestFileInfo, err := getLatestFileInfo(healCtx, partsMetadata, errs)
if err != nil {
return defaultHealResult(FileInfo{}, storageDisks, storageEndpoints, errs, bucket, object), toObjectErr(err, bucket, object)
}
errCount := 0
for _, err := range errs {
if err != nil {
errCount++
}
}
if errCount == len(errs) {
// Only if we get errors from all the disks we return error. Else we need to
// continue to return filled madmin.HealResultItem struct which includes info
// on what disks the file is available etc.
if err = reduceReadQuorumErrs(ctx, errs, nil, latestFileInfo.Erasure.DataBlocks); err != nil {
if m, ok := isObjectDangling(partsMetadata, errs, []error{}); ok {
writeQuorum := m.Erasure.DataBlocks + 1
if m.Erasure.DataBlocks == 0 {
writeQuorum = getWriteQuorum(len(storageDisks))
}
if !opts.DryRun && opts.Remove {
if versionID == "" {
er.deleteObject(ctx, bucket, object, writeQuorum)
} else {
er.deleteObjectVersion(ctx, bucket, object, writeQuorum, FileInfo{VersionID: versionID})
}
}
}
return defaultHealResult(latestFileInfo, storageDisks, storageEndpoints, errs, bucket, object), toObjectErr(err, bucket, object)
}
}
// Heal the object.
return er.healObject(healCtx, bucket, object, partsMetadata, errs, latestFileInfo, opts.DryRun, opts.Remove, opts.ScanMode)
}