214 lines
5.9 KiB
Go
214 lines
5.9 KiB
Go
/*
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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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"errors"
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"time"
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"github.com/minio/minio/cmd/logger"
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"github.com/minio/minio/pkg/color"
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"github.com/minio/minio/pkg/console"
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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 (er *erasureObjects) healErasureSet(ctx context.Context, buckets []BucketInfo) 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 := er.HealObject(ctx, minioMetaBucket, backendEncryptedFile, "", madmin.HealOpts{}); 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 := er.HealBucket(ctx, bucket.Name, madmin.HealOpts{}); 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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if serverDebugLog {
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console.Debugf(color.Green("healDisk:")+" healing bucket %s content on erasure set %d\n", bucket.Name, er.setNumber+1)
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}
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disks, _ := er.getOnlineDisksWithHealing()
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if len(disks) == 0 {
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return errors.New("healErasureSet: No non-healing disks found")
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}
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// Limit listing to 3 drives.
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if len(disks) > 3 {
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disks = disks[:3]
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}
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healEntry := func(entry metaCacheEntry) {
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if entry.isDir() {
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return
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}
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fivs, err := entry.fileInfoVersions(bucket.Name)
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if err != nil {
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logger.LogIf(ctx, err)
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return
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}
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waitForLowHTTPReq(globalHealConfig.IOCount, globalHealConfig.Sleep)
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for _, version := range fivs.Versions {
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if _, err := er.HealObject(ctx, bucket.Name, version.Name, version.VersionID, madmin.HealOpts{ScanMode: madmin.HealNormalScan, Remove: healDeleteDangling}); 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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bgSeq.logHeal(madmin.HealItemObject)
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}
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}
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err := listPathRaw(ctx, listPathRawOptions{
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disks: disks,
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bucket: bucket.Name,
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recursive: true,
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forwardTo: "", //TODO(klauspost): Set this to last known offset when resuming.
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minDisks: 1,
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reportNotFound: false,
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agreed: healEntry,
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partial: func(entries metaCacheEntries, nAgreed int, errs []error) {
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entry, _ := entries.firstFound()
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if entry != nil && !entry.isDir() {
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healEntry(*entry)
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}
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},
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finished: nil,
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})
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logger.LogIf(ctx, err)
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}
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return nil
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}
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// healObject heals given object path in deep to fix bitrot.
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func healObject(bucket, object, versionID string, scan madmin.HealScanMode) {
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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: scan,
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},
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}
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}
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}
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