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fix: save healing tracker right before healing (#10915)

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this change avoids a situation where accidentally
if the user deleted the healing tracker or drives
were replaced again within the 10sec window.
This commit is contained in:
Harshavardhana 2020-11-18 09:34:46 -08:00 committed by GitHub
parent 9738d605e4
commit d1b1fee080
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 35 additions and 10 deletions
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21
cmd/background-newdisks-heal-ops.go
View File

@ -118,6 +118,7 @@ func initBackgroundHealing(ctx context.Context, objAPI ObjectLayer) {
// 2. Only the node hosting the disk is responsible to perform the heal // 2. Only the node hosting the disk is responsible to perform the heal
func monitorLocalDisksAndHeal(ctx context.Context, z *erasureServerSets, bgSeq *healSequence) { func monitorLocalDisksAndHeal(ctx context.Context, z *erasureServerSets, bgSeq *healSequence) {
// Perform automatic disk healing when a disk is replaced locally. // Perform automatic disk healing when a disk is replaced locally.
wait:
for { for {
select { select {
case <-ctx.Done(): case <-ctx.Done():
@ -176,6 +177,26 @@ func monitorLocalDisksAndHeal(ctx context.Context, z *erasureServerSets, bgSeq *
for _, disk := range disks { for _, disk := range disks {
logger.Info("Healing disk '%s' on %s zone", disk, humanize.Ordinal(i+1)) logger.Info("Healing disk '%s' on %s zone", disk, humanize.Ordinal(i+1))
// So someone changed the drives underneath, healing tracker missing.
if !disk.Healing() {
logger.Info("Healing tracker missing on '%s', disk was swapped again on %s zone", disk, humanize.Ordinal(i+1))
diskID, err := disk.GetDiskID()
if err != nil {
logger.LogIf(ctx, err)
// reading format.json failed or not found, proceed to look
// for new disks to be healed again, we cannot proceed further.
goto wait
}
if err := saveHealingTracker(disk, diskID); err != nil {
logger.LogIf(ctx, err)
// Unable to write healing tracker, permission denied or some
// other unexpected error occurred. Proceed to look for new
// disks to be healed again, we cannot proceed further.
goto wait
}
}
lbDisks := z.serverSets[i].sets[setIndex].getOnlineDisks() lbDisks := z.serverSets[i].sets[setIndex].getOnlineDisks()
if err := healErasureSet(ctx, setIndex, buckets, lbDisks); err != nil { if err := healErasureSet(ctx, setIndex, buckets, lbDisks); err != nil {
logger.LogIf(ctx, err) logger.LogIf(ctx, err)

24
cmd/format-erasure.go
View File

@ -339,6 +339,19 @@ func loadFormatErasureAll(storageDisks []StorageAPI, heal bool) ([]*formatErasur
return formats, g.Wait() return formats, g.Wait()
} }
func saveHealingTracker(disk StorageAPI, diskID string) error {
htracker := healingTracker{
ID: diskID,
}
htrackerBytes, err := htracker.MarshalMsg(nil)
if err != nil {
return err
}
return disk.WriteAll(context.TODO(), minioMetaBucket,
pathJoin(bucketMetaPrefix, slashSeparator, healingTrackerFilename),
htrackerBytes)
}
func saveFormatErasure(disk StorageAPI, format *formatErasureV3, heal bool) error { func saveFormatErasure(disk StorageAPI, format *formatErasureV3, heal bool) error {
if disk == nil || format == nil { if disk == nil || format == nil {
return errDiskNotFound return errDiskNotFound
@ -373,16 +386,7 @@ func saveFormatErasure(disk StorageAPI, format *formatErasureV3, heal bool) erro
disk.SetDiskID(diskID) disk.SetDiskID(diskID)
if heal { if heal {
htracker := healingTracker{ return saveHealingTracker(disk, diskID)
ID: diskID,
}
htrackerBytes, err := htracker.MarshalMsg(nil)
if err != nil {
return err
}
return disk.WriteAll(context.TODO(), minioMetaBucket,
pathJoin(bucketMetaPrefix, slashSeparator, healingTrackerFilename),
htrackerBytes)
} }
return nil return nil
} }