212 lines
5.4 KiB
212 lines
5.4 KiB
/*
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* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"context"
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"sync"
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"time"
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"github.com/minio/minio/cmd/logger"
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"github.com/minio/minio/pkg/madmin"
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)
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const (
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bgHealingUUID = "0000-0000-0000-0000"
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)
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// NewBgHealSequence creates a background healing sequence
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// operation which crawls all objects and heal them.
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func newBgHealSequence() *healSequence {
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reqInfo := &logger.ReqInfo{API: "BackgroundHeal"}
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ctx, cancelCtx := context.WithCancel(logger.SetReqInfo(GlobalContext, reqInfo))
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hs := madmin.HealOpts{
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// Remove objects that do not have read-quorum
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Remove: true,
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ScanMode: madmin.HealNormalScan,
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}
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return &healSequence{
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sourceCh: make(chan healSource),
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respCh: make(chan healResult),
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startTime: UTCNow(),
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clientToken: bgHealingUUID,
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// run-background heal with reserved bucket
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bucket: minioReservedBucket,
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settings: hs,
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currentStatus: healSequenceStatus{
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Summary: healNotStartedStatus,
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HealSettings: hs,
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},
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cancelCtx: cancelCtx,
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ctx: ctx,
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reportProgress: false,
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scannedItemsMap: make(map[madmin.HealItemType]int64),
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healedItemsMap: make(map[madmin.HealItemType]int64),
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healFailedItemsMap: make(map[string]int64),
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}
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}
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func getLocalBackgroundHealStatus() (madmin.BgHealState, bool) {
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if globalBackgroundHealState == nil {
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return madmin.BgHealState{}, false
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}
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bgSeq, ok := globalBackgroundHealState.getHealSequenceByToken(bgHealingUUID)
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if !ok {
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return madmin.BgHealState{}, false
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}
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var healDisksMap = map[string]struct{}{}
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for _, ep := range getLocalDisksToHeal() {
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healDisksMap[ep.String()] = struct{}{}
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}
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for _, ep := range globalBackgroundHealState.getHealLocalDisks() {
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if _, ok := healDisksMap[ep.String()]; !ok {
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healDisksMap[ep.String()] = struct{}{}
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}
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}
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var healDisks []string
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for disk := range healDisksMap {
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healDisks = append(healDisks, disk)
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}
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return madmin.BgHealState{
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ScannedItemsCount: bgSeq.getScannedItemsCount(),
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LastHealActivity: bgSeq.lastHealActivity,
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HealDisks: healDisks,
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NextHealRound: UTCNow(),
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}, true
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}
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func mustGetHealSequence(ctx context.Context) *healSequence {
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// Get background heal sequence to send elements to heal
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for {
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globalHealStateLK.RLock()
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hstate := globalBackgroundHealState
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globalHealStateLK.RUnlock()
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if hstate == nil {
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time.Sleep(time.Second)
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continue
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}
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bgSeq, ok := hstate.getHealSequenceByToken(bgHealingUUID)
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if !ok {
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time.Sleep(time.Second)
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continue
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}
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return bgSeq
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}
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}
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// healErasureSet lists and heals all objects in a specific erasure set
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func healErasureSet(ctx context.Context, setIndex int, buckets []BucketInfo, disks []StorageAPI) error {
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bgSeq := mustGetHealSequence(ctx)
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buckets = append(buckets, BucketInfo{
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Name: pathJoin(minioMetaBucket, minioConfigPrefix),
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})
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// Try to pro-actively heal backend-encrypted file.
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if err := bgSeq.queueHealTask(healSource{
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bucket: minioMetaBucket,
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object: backendEncryptedFile,
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}, madmin.HealItemMetadata); err != nil {
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if !isErrObjectNotFound(err) && !isErrVersionNotFound(err) {
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logger.LogIf(ctx, err)
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}
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}
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// Heal all buckets with all objects
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for _, bucket := range buckets {
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// Heal current bucket
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if err := bgSeq.queueHealTask(healSource{
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bucket: bucket.Name,
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}, madmin.HealItemBucket); err != nil {
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if !isErrObjectNotFound(err) && !isErrVersionNotFound(err) {
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logger.LogIf(ctx, err)
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}
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}
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var entryChs []FileInfoVersionsCh
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var mu sync.Mutex
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var wg sync.WaitGroup
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for _, disk := range disks {
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disk := disk
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wg.Add(1)
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go func() {
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defer wg.Done()
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entryCh, err := disk.WalkVersions(ctx, bucket.Name, "", "", true, ctx.Done())
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if err != nil {
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// Disk walk returned error, ignore it.
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return
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}
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mu.Lock()
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entryChs = append(entryChs, FileInfoVersionsCh{
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Ch: entryCh,
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})
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mu.Unlock()
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}()
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}
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wg.Wait()
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entriesValid := make([]bool, len(entryChs))
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entries := make([]FileInfoVersions, len(entryChs))
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for {
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entry, _, ok := lexicallySortedEntryVersions(entryChs, entries, entriesValid)
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if !ok {
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break
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}
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for _, version := range entry.Versions {
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if err := bgSeq.queueHealTask(healSource{
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bucket: bucket.Name,
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object: version.Name,
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versionID: version.VersionID,
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}, madmin.HealItemObject); err != nil {
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if !isErrObjectNotFound(err) && !isErrVersionNotFound(err) {
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logger.LogIf(ctx, err)
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}
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}
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}
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}
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}
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return nil
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}
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// deepHealObject heals given object path in deep to fix bitrot.
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func deepHealObject(bucket, object, versionID string) {
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// Get background heal sequence to send elements to heal
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bgSeq, ok := globalBackgroundHealState.getHealSequenceByToken(bgHealingUUID)
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if ok {
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bgSeq.sourceCh <- healSource{
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bucket: bucket,
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object: object,
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versionID: versionID,
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opts: &madmin.HealOpts{
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Remove: true, // if found dangling purge it.
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ScanMode: madmin.HealDeepScan,
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},
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}
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}
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}
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