419 lines
15 KiB
Go
419 lines
15 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
|
|
// See LICENSE for copying information.
|
|
|
|
package checker
|
|
|
|
import (
|
|
"context"
|
|
"time"
|
|
|
|
"github.com/spacemonkeygo/monkit/v3"
|
|
"github.com/zeebo/errs"
|
|
"go.uber.org/zap"
|
|
"golang.org/x/sync/errgroup"
|
|
|
|
"storj.io/common/errs2"
|
|
"storj.io/common/pb"
|
|
"storj.io/common/sync2"
|
|
"storj.io/storj/satellite/internalpb"
|
|
"storj.io/storj/satellite/metainfo"
|
|
"storj.io/storj/satellite/metainfo/metabase"
|
|
"storj.io/storj/satellite/overlay"
|
|
"storj.io/storj/satellite/repair/irreparable"
|
|
"storj.io/storj/satellite/repair/queue"
|
|
)
|
|
|
|
// Error is a standard error class for this package.
|
|
var (
|
|
Error = errs.Class("checker error")
|
|
mon = monkit.Package()
|
|
)
|
|
|
|
// Config contains configurable values for checker.
|
|
type Config struct {
|
|
Interval time.Duration `help:"how frequently checker should check for bad segments" releaseDefault:"30s" devDefault:"0h0m10s"`
|
|
IrreparableInterval time.Duration `help:"how frequently irrepairable checker should check for lost pieces" releaseDefault:"30m" devDefault:"0h0m5s"`
|
|
|
|
ReliabilityCacheStaleness time.Duration `help:"how stale reliable node cache can be" releaseDefault:"5m" devDefault:"5m"`
|
|
RepairOverride int `help:"override value for repair threshold" releaseDefault:"52" devDefault:"0"`
|
|
}
|
|
|
|
// durabilityStats remote segment information.
|
|
type durabilityStats struct {
|
|
objectsChecked int64
|
|
remoteSegmentsChecked int64
|
|
remoteSegmentsNeedingRepair int64
|
|
newRemoteSegmentsNeedingRepair int64
|
|
remoteSegmentsLost int64
|
|
remoteSegmentsFailedToCheck int64
|
|
remoteSegmentInfo []metabase.ObjectLocation
|
|
// remoteSegmentsOverThreshold[0]=# of healthy=rt+1, remoteSegmentsOverThreshold[1]=# of healthy=rt+2, etc...
|
|
remoteSegmentsOverThreshold [5]int64
|
|
}
|
|
|
|
// Checker contains the information needed to do checks for missing pieces
|
|
//
|
|
// architecture: Chore
|
|
type Checker struct {
|
|
logger *zap.Logger
|
|
repairQueue queue.RepairQueue
|
|
irrdb irreparable.DB
|
|
metainfo *metainfo.Service
|
|
metaLoop *metainfo.Loop
|
|
nodestate *ReliabilityCache
|
|
repairOverride int32
|
|
Loop *sync2.Cycle
|
|
IrreparableLoop *sync2.Cycle
|
|
}
|
|
|
|
// NewChecker creates a new instance of checker.
|
|
func NewChecker(logger *zap.Logger, repairQueue queue.RepairQueue, irrdb irreparable.DB, metainfo *metainfo.Service, metaLoop *metainfo.Loop, overlay *overlay.Service, config Config) *Checker {
|
|
return &Checker{
|
|
logger: logger,
|
|
|
|
repairQueue: repairQueue,
|
|
irrdb: irrdb,
|
|
metainfo: metainfo,
|
|
metaLoop: metaLoop,
|
|
nodestate: NewReliabilityCache(overlay, config.ReliabilityCacheStaleness),
|
|
repairOverride: int32(config.RepairOverride),
|
|
|
|
Loop: sync2.NewCycle(config.Interval),
|
|
IrreparableLoop: sync2.NewCycle(config.IrreparableInterval),
|
|
}
|
|
}
|
|
|
|
// Run the checker loop.
|
|
func (checker *Checker) Run(ctx context.Context) (err error) {
|
|
defer mon.Task()(&ctx)(&err)
|
|
|
|
group, ctx := errgroup.WithContext(ctx)
|
|
|
|
group.Go(func() error {
|
|
return checker.Loop.Run(ctx, checker.IdentifyInjuredSegments)
|
|
})
|
|
|
|
group.Go(func() error {
|
|
return checker.IrreparableLoop.Run(ctx, checker.IrreparableProcess)
|
|
})
|
|
|
|
return group.Wait()
|
|
}
|
|
|
|
// RefreshReliabilityCache forces refreshing node online status cache.
|
|
func (checker *Checker) RefreshReliabilityCache(ctx context.Context) error {
|
|
return checker.nodestate.Refresh(ctx)
|
|
}
|
|
|
|
// Close halts the Checker loop.
|
|
func (checker *Checker) Close() error {
|
|
checker.Loop.Close()
|
|
return nil
|
|
}
|
|
|
|
// IdentifyInjuredSegments checks for missing pieces off of the metainfo and overlay.
|
|
func (checker *Checker) IdentifyInjuredSegments(ctx context.Context) (err error) {
|
|
defer mon.Task()(&ctx)(&err)
|
|
|
|
startTime := time.Now()
|
|
|
|
observer := &checkerObserver{
|
|
repairQueue: checker.repairQueue,
|
|
irrdb: checker.irrdb,
|
|
nodestate: checker.nodestate,
|
|
monStats: durabilityStats{},
|
|
overrideRepair: checker.repairOverride,
|
|
log: checker.logger,
|
|
}
|
|
err = checker.metaLoop.Join(ctx, observer)
|
|
if err != nil {
|
|
if !errs2.IsCanceled(err) {
|
|
checker.logger.Error("IdentifyInjuredSegments error", zap.Error(err))
|
|
}
|
|
return err
|
|
}
|
|
|
|
// remove all segments which were not seen as unhealthy by this checker iteration
|
|
healthyDeleted, err := checker.repairQueue.Clean(ctx, startTime)
|
|
if err != nil {
|
|
return Error.Wrap(err)
|
|
}
|
|
|
|
mon.IntVal("remote_files_checked").Observe(observer.monStats.objectsChecked) //mon:locked
|
|
mon.IntVal("remote_segments_checked").Observe(observer.monStats.remoteSegmentsChecked) //mon:locked
|
|
mon.IntVal("remote_segments_failed_to_check").Observe(observer.monStats.remoteSegmentsFailedToCheck) //mon:locked
|
|
mon.IntVal("remote_segments_needing_repair").Observe(observer.monStats.remoteSegmentsNeedingRepair) //mon:locked
|
|
mon.IntVal("new_remote_segments_needing_repair").Observe(observer.monStats.newRemoteSegmentsNeedingRepair) //mon:locked
|
|
mon.IntVal("remote_segments_lost").Observe(observer.monStats.remoteSegmentsLost) //mon:locked
|
|
mon.IntVal("remote_files_lost").Observe(int64(len(observer.monStats.remoteSegmentInfo))) //mon:locked
|
|
mon.IntVal("remote_segments_over_threshold_1").Observe(observer.monStats.remoteSegmentsOverThreshold[0]) //mon:locked
|
|
mon.IntVal("remote_segments_over_threshold_2").Observe(observer.monStats.remoteSegmentsOverThreshold[1]) //mon:locked
|
|
mon.IntVal("remote_segments_over_threshold_3").Observe(observer.monStats.remoteSegmentsOverThreshold[2]) //mon:locked
|
|
mon.IntVal("remote_segments_over_threshold_4").Observe(observer.monStats.remoteSegmentsOverThreshold[3]) //mon:locked
|
|
mon.IntVal("remote_segments_over_threshold_5").Observe(observer.monStats.remoteSegmentsOverThreshold[4]) //mon:locked
|
|
mon.IntVal("healthy_segments_removed_from_queue").Observe(healthyDeleted) //mon:locked
|
|
|
|
allUnhealthy := observer.monStats.remoteSegmentsNeedingRepair + observer.monStats.remoteSegmentsFailedToCheck
|
|
allChecked := observer.monStats.remoteSegmentsChecked
|
|
allHealthy := allChecked - allUnhealthy
|
|
mon.FloatVal("remote_segments_healthy_percentage").Observe(100 * float64(allHealthy) / float64(allChecked)) //mon:locked
|
|
|
|
return nil
|
|
}
|
|
|
|
// checks for a object location in slice.
|
|
func containsObjectLocation(a []metabase.ObjectLocation, x metabase.ObjectLocation) bool {
|
|
for _, n := range a {
|
|
if x == n {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func (checker *Checker) updateIrreparableSegmentStatus(ctx context.Context, pointer *pb.Pointer, key metabase.SegmentKey) (err error) {
|
|
// TODO figure out how to reduce duplicate code between here and checkerObs.RemoteSegment
|
|
defer mon.Task()(&ctx)(&err)
|
|
remote := pointer.GetRemote()
|
|
if pointer.GetType() == pb.Pointer_INLINE || remote == nil {
|
|
return nil
|
|
}
|
|
|
|
pieces := remote.GetRemotePieces()
|
|
if pieces == nil {
|
|
checker.logger.Debug("no pieces on remote segment")
|
|
return nil
|
|
}
|
|
|
|
missingPieces, err := checker.nodestate.MissingPieces(ctx, pointer.CreationDate, pieces)
|
|
if err != nil {
|
|
return errs.Combine(Error.New("error getting missing pieces"), err)
|
|
}
|
|
|
|
numHealthy := int32(len(pieces) - len(missingPieces))
|
|
redundancy := pointer.Remote.Redundancy
|
|
|
|
repairThreshold := redundancy.RepairThreshold
|
|
if checker.repairOverride != 0 {
|
|
repairThreshold = checker.repairOverride
|
|
}
|
|
|
|
// we repair when the number of healthy pieces is less than or equal to the repair threshold and is greater or equal to
|
|
// minimum required pieces in redundancy
|
|
// except for the case when the repair and success thresholds are the same (a case usually seen during testing)
|
|
//
|
|
// If the segment is suddenly entirely healthy again, we don't need to repair and we don't need to
|
|
// keep it in the irreparabledb queue either.
|
|
if numHealthy >= redundancy.MinReq && numHealthy <= repairThreshold && numHealthy < redundancy.SuccessThreshold {
|
|
_, err = checker.repairQueue.Insert(ctx, &internalpb.InjuredSegment{
|
|
Path: key,
|
|
LostPieces: missingPieces,
|
|
InsertedTime: time.Now().UTC(),
|
|
}, int(numHealthy))
|
|
if err != nil {
|
|
return errs.Combine(Error.New("error adding injured segment to queue"), err)
|
|
}
|
|
|
|
// delete always returns nil when something was deleted and also when element didn't exists
|
|
err = checker.irrdb.Delete(ctx, key)
|
|
if err != nil {
|
|
checker.logger.Error("error deleting entry from irreparable db: ", zap.Error(err))
|
|
}
|
|
} else if numHealthy < redundancy.MinReq && numHealthy < repairThreshold {
|
|
|
|
// make an entry into the irreparable table
|
|
segmentInfo := &internalpb.IrreparableSegment{
|
|
Path: key,
|
|
SegmentDetail: pointer,
|
|
LostPieces: int32(len(missingPieces)),
|
|
LastRepairAttempt: time.Now().Unix(),
|
|
RepairAttemptCount: int64(1),
|
|
}
|
|
|
|
// add the entry if new or update attempt count if already exists
|
|
err := checker.irrdb.IncrementRepairAttempts(ctx, segmentInfo)
|
|
if err != nil {
|
|
return errs.Combine(Error.New("error handling irreparable segment to queue"), err)
|
|
}
|
|
} else if numHealthy > repairThreshold || numHealthy >= redundancy.SuccessThreshold {
|
|
err = checker.irrdb.Delete(ctx, key)
|
|
if err != nil {
|
|
return Error.New("error removing segment from irreparable queue: %v", err)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
var _ metainfo.Observer = (*checkerObserver)(nil)
|
|
|
|
// checkerObserver implements the metainfo loop Observer interface
|
|
//
|
|
// architecture: Observer
|
|
type checkerObserver struct {
|
|
repairQueue queue.RepairQueue
|
|
irrdb irreparable.DB
|
|
nodestate *ReliabilityCache
|
|
monStats durabilityStats
|
|
overrideRepair int32
|
|
log *zap.Logger
|
|
}
|
|
|
|
func (obs *checkerObserver) RemoteSegment(ctx context.Context, segment *metainfo.Segment) (err error) {
|
|
defer mon.Task()(&ctx)(&err)
|
|
|
|
// ignore pointer if expired
|
|
if segment.Expired(time.Now()) {
|
|
return nil
|
|
}
|
|
|
|
obs.monStats.remoteSegmentsChecked++
|
|
|
|
pieces := segment.Pieces
|
|
if len(pieces) == 0 {
|
|
obs.log.Debug("no pieces on remote segment")
|
|
return nil
|
|
}
|
|
|
|
pbPieces := make([]*pb.RemotePiece, len(pieces))
|
|
for i, piece := range pieces {
|
|
pbPieces[i] = &pb.RemotePiece{
|
|
PieceNum: int32(piece.Number),
|
|
NodeId: piece.StorageNode,
|
|
}
|
|
}
|
|
|
|
// TODO: update MissingPieces to accept metabase.Pieces
|
|
missingPieces, err := obs.nodestate.MissingPieces(ctx, segment.CreationDate, pbPieces)
|
|
if err != nil {
|
|
obs.monStats.remoteSegmentsFailedToCheck++
|
|
return errs.Combine(Error.New("error getting missing pieces"), err)
|
|
}
|
|
|
|
numHealthy := len(pieces) - len(missingPieces)
|
|
mon.IntVal("checker_segment_total_count").Observe(int64(len(pieces))) //mon:locked
|
|
mon.IntVal("checker_segment_healthy_count").Observe(int64(numHealthy)) //mon:locked
|
|
|
|
segmentAge := time.Since(segment.CreationDate)
|
|
mon.IntVal("checker_segment_age").Observe(int64(segmentAge.Seconds())) //mon:locked
|
|
|
|
required := int(segment.Redundancy.RequiredShares)
|
|
repairThreshold := int(segment.Redundancy.RepairShares)
|
|
if obs.overrideRepair != 0 {
|
|
repairThreshold = int(obs.overrideRepair)
|
|
}
|
|
successThreshold := int(segment.Redundancy.OptimalShares)
|
|
|
|
key := segment.Location.Encode()
|
|
// we repair when the number of healthy pieces is less than or equal to the repair threshold and is greater or equal to
|
|
// minimum required pieces in redundancy
|
|
// except for the case when the repair and success thresholds are the same (a case usually seen during testing)
|
|
if numHealthy >= required && numHealthy <= repairThreshold && numHealthy < successThreshold {
|
|
obs.monStats.remoteSegmentsNeedingRepair++
|
|
alreadyInserted, err := obs.repairQueue.Insert(ctx, &internalpb.InjuredSegment{
|
|
Path: key,
|
|
LostPieces: missingPieces,
|
|
InsertedTime: time.Now().UTC(),
|
|
}, numHealthy)
|
|
if err != nil {
|
|
obs.log.Error("error adding injured segment to queue", zap.Error(err))
|
|
return nil
|
|
}
|
|
|
|
if !alreadyInserted {
|
|
obs.monStats.newRemoteSegmentsNeedingRepair++
|
|
}
|
|
|
|
// delete always returns nil when something was deleted and also when element didn't exists
|
|
err = obs.irrdb.Delete(ctx, key)
|
|
if err != nil {
|
|
obs.log.Error("error deleting entry from irreparable db", zap.Error(err))
|
|
return nil
|
|
}
|
|
} else if numHealthy < required && numHealthy < repairThreshold {
|
|
lostSegInfo := segment.Location.Object()
|
|
if !containsObjectLocation(obs.monStats.remoteSegmentInfo, lostSegInfo) {
|
|
obs.monStats.remoteSegmentInfo = append(obs.monStats.remoteSegmentInfo, lostSegInfo)
|
|
}
|
|
|
|
var segmentAge time.Duration
|
|
if segment.CreationDate.Before(segment.LastRepaired) {
|
|
segmentAge = time.Since(segment.LastRepaired)
|
|
} else {
|
|
segmentAge = time.Since(segment.CreationDate)
|
|
}
|
|
mon.IntVal("checker_segment_time_until_irreparable").Observe(int64(segmentAge.Seconds())) //mon:locked
|
|
|
|
obs.monStats.remoteSegmentsLost++
|
|
// make an entry into the irreparable table
|
|
segmentInfo := &internalpb.IrreparableSegment{
|
|
Path: key,
|
|
SegmentDetail: segment.Pointer, // TODO: replace with something better than pb.Pointer
|
|
LostPieces: int32(len(missingPieces)),
|
|
LastRepairAttempt: time.Now().Unix(),
|
|
RepairAttemptCount: int64(1),
|
|
}
|
|
|
|
// add the entry if new or update attempt count if already exists
|
|
err := obs.irrdb.IncrementRepairAttempts(ctx, segmentInfo)
|
|
if err != nil {
|
|
obs.log.Error("error handling irreparable segment to queue", zap.Error(err))
|
|
return nil
|
|
}
|
|
} else if numHealthy > repairThreshold && numHealthy <= (repairThreshold+len(obs.monStats.remoteSegmentsOverThreshold)) {
|
|
// record metrics for segments right above repair threshold
|
|
// numHealthy=repairThreshold+1 through numHealthy=repairThreshold+5
|
|
for i := range obs.monStats.remoteSegmentsOverThreshold {
|
|
if numHealthy == (repairThreshold + i + 1) {
|
|
obs.monStats.remoteSegmentsOverThreshold[i]++
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (obs *checkerObserver) Object(ctx context.Context, object *metainfo.Object) (err error) {
|
|
defer mon.Task()(&ctx)(&err)
|
|
|
|
obs.monStats.objectsChecked++
|
|
|
|
return nil
|
|
}
|
|
|
|
func (obs *checkerObserver) InlineSegment(ctx context.Context, segment *metainfo.Segment) (err error) {
|
|
defer mon.Task()(&ctx)(&err)
|
|
return nil
|
|
}
|
|
|
|
// IrreparableProcess iterates over all items in the irreparabledb. If an item can
|
|
// now be repaired then it is added to a worker queue.
|
|
func (checker *Checker) IrreparableProcess(ctx context.Context) (err error) {
|
|
defer mon.Task()(&ctx)(&err)
|
|
const limit = 1000
|
|
lastSeenSegmentKey := metabase.SegmentKey{}
|
|
|
|
for {
|
|
segments, err := checker.irrdb.GetLimited(ctx, limit, lastSeenSegmentKey)
|
|
if err != nil {
|
|
return errs.Combine(Error.New("error reading segment from the queue"), err)
|
|
}
|
|
|
|
// zero segments returned with nil err
|
|
if len(segments) == 0 {
|
|
break
|
|
}
|
|
|
|
lastSeenSegmentKey = metabase.SegmentKey(segments[len(segments)-1].Path)
|
|
|
|
for _, segment := range segments {
|
|
err = checker.updateIrreparableSegmentStatus(ctx, segment.GetSegmentDetail(), metabase.SegmentKey(segment.GetPath()))
|
|
if err != nil {
|
|
checker.logger.Error("irrepair segment checker failed: ", zap.Error(err))
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|