98 lines
3.8 KiB
Go
98 lines
3.8 KiB
Go
package splitstore
|
|
|
|
import (
|
|
"fmt"
|
|
"time"
|
|
|
|
bstore "github.com/filecoin-project/lotus/blockstore"
|
|
)
|
|
|
|
const (
|
|
// When < 150 GB of space would remain during moving GC, trigger moving GC
|
|
targetThreshold = 150_000_000_000
|
|
// Don't attempt moving GC with 50 GB or less would remain during moving GC
|
|
targetBuffer = 50_000_000_000
|
|
// Fraction of garbage in badger vlog for online GC traversal to collect garbage
|
|
aggressiveOnlineGCThreshold = 0.0001
|
|
)
|
|
|
|
func (s *SplitStore) gcHotAfterCompaction() {
|
|
// Measure hotstore size, determine if we should do full GC, determine if we can do full GC.
|
|
// We should do full GC if
|
|
// FullGCFrequency is specified and compaction index matches frequency
|
|
// OR HotstoreMaxSpaceTarget is specified and total moving space is within 150 GB of target
|
|
// We can do full if
|
|
// HotstoreMaxSpaceTarget is not specified
|
|
// OR total moving space would not exceed 50 GB below target
|
|
//
|
|
// a) If we should not do full GC => online GC
|
|
// b) If we should do full GC and can => moving GC
|
|
// c) If we should do full GC and can't => aggressive online GC
|
|
var hotSize int64
|
|
var err error
|
|
sizer, ok := s.hot.(bstore.BlockstoreSize)
|
|
if ok {
|
|
hotSize, err = sizer.Size()
|
|
if err != nil {
|
|
log.Warnf("error getting hotstore size: %s, estimating empty hot store for targeting", err)
|
|
hotSize = 0
|
|
}
|
|
} else {
|
|
hotSize = 0
|
|
}
|
|
|
|
copySizeApprox := s.szKeys + s.szMarkedLiveRefs + s.szProtectedTxns + s.szWalk
|
|
shouldTarget := s.cfg.HotstoreMaxSpaceTarget > 0 && hotSize+copySizeApprox > int64(s.cfg.HotstoreMaxSpaceTarget)-targetThreshold
|
|
shouldFreq := s.cfg.HotStoreFullGCFrequency > 0 && s.compactionIndex%int64(s.cfg.HotStoreFullGCFrequency) == 0
|
|
shouldDoFull := shouldTarget || shouldFreq
|
|
canDoFull := s.cfg.HotstoreMaxSpaceTarget == 0 || hotSize+copySizeApprox < int64(s.cfg.HotstoreMaxSpaceTarget)-targetBuffer
|
|
log.Infof("measured hot store size: %d, approximate new size: %d, should do full %t, can do full %t", hotSize, copySizeApprox, shouldDoFull, canDoFull)
|
|
|
|
var opts []bstore.BlockstoreGCOption
|
|
if shouldDoFull && canDoFull {
|
|
opts = append(opts, bstore.WithFullGC(true))
|
|
} else if shouldDoFull && !canDoFull {
|
|
log.Warnf("Attention! Estimated moving GC size %d is not within safety buffer %d of target max %d, performing aggressive online GC to attempt to bring hotstore size down safely", copySizeApprox, targetBuffer, s.cfg.HotstoreMaxSpaceTarget)
|
|
log.Warn("If problem continues you can 1) temporarily allocate more disk space to hotstore and 2) reflect in HotstoreMaxSpaceTarget OR trigger manual move with `lotus chain prune hot-moving`")
|
|
log.Warn("If problem continues and you do not have any more disk space you can run continue to manually trigger online GC at agressive thresholds (< 0.01) with `lotus chain prune hot`")
|
|
|
|
opts = append(opts, bstore.WithThreshold(aggressiveOnlineGCThreshold))
|
|
}
|
|
|
|
if err := s.gcBlockstore(s.hot, opts); err != nil {
|
|
log.Warnf("error garbage collecting hostore: %s", err)
|
|
}
|
|
}
|
|
|
|
func (s *SplitStore) gcBlockstore(b bstore.Blockstore, opts []bstore.BlockstoreGCOption) error {
|
|
if gc, ok := b.(bstore.BlockstoreGC); ok {
|
|
log.Info("garbage collecting blockstore")
|
|
startGC := time.Now()
|
|
|
|
if err := gc.CollectGarbage(s.ctx, opts...); err != nil {
|
|
return err
|
|
}
|
|
|
|
log.Infow("garbage collecting blockstore done", "took", time.Since(startGC))
|
|
return nil
|
|
}
|
|
|
|
return fmt.Errorf("blockstore doesn't support garbage collection: %T", b)
|
|
}
|
|
|
|
func (s *SplitStore) gcBlockstoreOnce(b bstore.Blockstore, opts []bstore.BlockstoreGCOption) error {
|
|
if gc, ok := b.(bstore.BlockstoreGCOnce); ok {
|
|
log.Debug("gc blockstore once")
|
|
startGC := time.Now()
|
|
|
|
if err := gc.GCOnce(s.ctx, opts...); err != nil {
|
|
return err
|
|
}
|
|
|
|
log.Debugw("gc blockstore once done", "took", time.Since(startGC))
|
|
return nil
|
|
}
|
|
|
|
return fmt.Errorf("blockstore doesn't support gc once: %T", b)
|
|
}
|