mirror of
https://github.com/minio/minio.git
synced 2024-12-25 06:35:56 -05:00
fa9cf1251b
* Provide information on *actively* healing, buckets healed/queued, objects healed/failed. * Add concurrent healing of multiple sets (typically on startup). * Add bucket level resume, so restarts will only heal non-healed buckets. * Print summary after healing a disk is done.
441 lines
13 KiB
Go
441 lines
13 KiB
Go
/*
|
|
* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"sort"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/dustin/go-humanize"
|
|
"github.com/minio/minio-go/v7/pkg/set"
|
|
"github.com/minio/minio/cmd/logger"
|
|
"github.com/minio/minio/pkg/color"
|
|
"github.com/minio/minio/pkg/console"
|
|
"github.com/minio/minio/pkg/madmin"
|
|
)
|
|
|
|
const (
|
|
defaultMonitorNewDiskInterval = time.Second * 10
|
|
healingTrackerFilename = ".healing.bin"
|
|
)
|
|
|
|
//go:generate msgp -file $GOFILE -unexported
|
|
|
|
// healingTracker is used to persist healing information during a heal.
|
|
type healingTracker struct {
|
|
disk StorageAPI `msg:"-"`
|
|
|
|
ID string
|
|
PoolIndex int
|
|
SetIndex int
|
|
DiskIndex int
|
|
Path string
|
|
Endpoint string
|
|
Started time.Time
|
|
LastUpdate time.Time
|
|
ObjectsHealed uint64
|
|
ObjectsFailed uint64
|
|
BytesDone uint64
|
|
BytesFailed uint64
|
|
|
|
// Last object scanned.
|
|
Bucket string `json:"-"`
|
|
Object string `json:"-"`
|
|
|
|
// Numbers when current bucket started healing,
|
|
// for resuming with correct numbers.
|
|
ResumeObjectsHealed uint64 `json:"-"`
|
|
ResumeObjectsFailed uint64 `json:"-"`
|
|
ResumeBytesDone uint64 `json:"-"`
|
|
ResumeBytesFailed uint64 `json:"-"`
|
|
|
|
// Filled on startup/restarts.
|
|
QueuedBuckets []string
|
|
|
|
// Filled during heal.
|
|
HealedBuckets []string
|
|
// Add future tracking capabilities
|
|
// Be sure that they are included in toHealingDisk
|
|
}
|
|
|
|
// loadHealingTracker will load the healing tracker from the supplied disk.
|
|
// The disk ID will be validated against the loaded one.
|
|
func loadHealingTracker(ctx context.Context, disk StorageAPI) (*healingTracker, error) {
|
|
if disk == nil {
|
|
return nil, errors.New("loadHealingTracker: nil disk given")
|
|
}
|
|
diskID, err := disk.GetDiskID()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
b, err := disk.ReadAll(ctx, minioMetaBucket,
|
|
pathJoin(bucketMetaPrefix, slashSeparator, healingTrackerFilename))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var h healingTracker
|
|
_, err = h.UnmarshalMsg(b)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if h.ID != diskID && h.ID != "" {
|
|
return nil, fmt.Errorf("loadHealingTracker: disk id mismatch expected %s, got %s", h.ID, diskID)
|
|
}
|
|
h.disk = disk
|
|
h.ID = diskID
|
|
return &h, nil
|
|
}
|
|
|
|
// newHealingTracker will create a new healing tracker for the disk.
|
|
func newHealingTracker(disk StorageAPI) *healingTracker {
|
|
diskID, _ := disk.GetDiskID()
|
|
h := healingTracker{
|
|
disk: disk,
|
|
ID: diskID,
|
|
Path: disk.String(),
|
|
Endpoint: disk.Endpoint().String(),
|
|
Started: time.Now().UTC(),
|
|
}
|
|
h.PoolIndex, h.SetIndex, h.DiskIndex = disk.GetDiskLoc()
|
|
return &h
|
|
}
|
|
|
|
// update will update the tracker on the disk.
|
|
// If the tracker has been deleted an error is returned.
|
|
func (h *healingTracker) update(ctx context.Context) error {
|
|
if h.disk.Healing() == nil {
|
|
return fmt.Errorf("healingTracker: disk %q is not marked as healing", h.ID)
|
|
}
|
|
if h.ID == "" || h.PoolIndex < 0 || h.SetIndex < 0 || h.DiskIndex < 0 {
|
|
h.ID, _ = h.disk.GetDiskID()
|
|
h.PoolIndex, h.SetIndex, h.DiskIndex = h.disk.GetDiskLoc()
|
|
}
|
|
return h.save(ctx)
|
|
}
|
|
|
|
// save will unconditionally save the tracker and will be created if not existing.
|
|
func (h *healingTracker) save(ctx context.Context) error {
|
|
if h.PoolIndex < 0 || h.SetIndex < 0 || h.DiskIndex < 0 {
|
|
// Attempt to get location.
|
|
if api := newObjectLayerFn(); api != nil {
|
|
if ep, ok := api.(*erasureServerPools); ok {
|
|
h.PoolIndex, h.SetIndex, h.DiskIndex, _ = ep.getPoolAndSet(h.ID)
|
|
}
|
|
}
|
|
}
|
|
h.LastUpdate = time.Now().UTC()
|
|
htrackerBytes, err := h.MarshalMsg(nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
globalBackgroundHealState.updateHealStatus(h)
|
|
return h.disk.WriteAll(ctx, minioMetaBucket,
|
|
pathJoin(bucketMetaPrefix, slashSeparator, healingTrackerFilename),
|
|
htrackerBytes)
|
|
}
|
|
|
|
// delete the tracker on disk.
|
|
func (h *healingTracker) delete(ctx context.Context) error {
|
|
return h.disk.Delete(ctx, minioMetaBucket,
|
|
pathJoin(bucketMetaPrefix, slashSeparator, healingTrackerFilename),
|
|
false)
|
|
}
|
|
|
|
func (h *healingTracker) isHealed(bucket string) bool {
|
|
for _, v := range h.HealedBuckets {
|
|
if v == bucket {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// resume will reset progress to the numbers at the start of the bucket.
|
|
func (h *healingTracker) resume() {
|
|
h.ObjectsHealed = h.ResumeObjectsHealed
|
|
h.ObjectsFailed = h.ResumeObjectsFailed
|
|
h.BytesDone = h.ResumeBytesDone
|
|
h.BytesFailed = h.ResumeBytesFailed
|
|
}
|
|
|
|
// bucketDone should be called when a bucket is done healing.
|
|
// Adds the bucket to the list of healed buckets and updates resume numbers.
|
|
func (h *healingTracker) bucketDone(bucket string) {
|
|
h.ResumeObjectsHealed = h.ObjectsHealed
|
|
h.ResumeObjectsFailed = h.ObjectsFailed
|
|
h.ResumeBytesDone = h.BytesDone
|
|
h.ResumeBytesFailed = h.BytesFailed
|
|
h.HealedBuckets = append(h.HealedBuckets, bucket)
|
|
for i, b := range h.QueuedBuckets {
|
|
if b == bucket {
|
|
// Delete...
|
|
h.QueuedBuckets = append(h.QueuedBuckets[:i], h.QueuedBuckets[i+1:]...)
|
|
}
|
|
}
|
|
}
|
|
|
|
// setQueuedBuckets will add buckets, but exclude any that is already in h.HealedBuckets.
|
|
// Order is preserved.
|
|
func (h *healingTracker) setQueuedBuckets(buckets []BucketInfo) {
|
|
s := set.CreateStringSet(h.HealedBuckets...)
|
|
h.QueuedBuckets = make([]string, 0, len(buckets))
|
|
for _, b := range buckets {
|
|
if !s.Contains(b.Name) {
|
|
h.QueuedBuckets = append(h.QueuedBuckets, b.Name)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (h *healingTracker) printTo(writer io.Writer) {
|
|
b, err := json.MarshalIndent(h, "", " ")
|
|
if err != nil {
|
|
writer.Write([]byte(err.Error()))
|
|
}
|
|
writer.Write(b)
|
|
}
|
|
|
|
// toHealingDisk converts the information to madmin.HealingDisk
|
|
func (h *healingTracker) toHealingDisk() madmin.HealingDisk {
|
|
return madmin.HealingDisk{
|
|
ID: h.ID,
|
|
Endpoint: h.Endpoint,
|
|
PoolIndex: h.PoolIndex,
|
|
SetIndex: h.SetIndex,
|
|
DiskIndex: h.DiskIndex,
|
|
Path: h.Path,
|
|
Started: h.Started.UTC(),
|
|
LastUpdate: h.LastUpdate.UTC(),
|
|
ObjectsHealed: h.ObjectsHealed,
|
|
ObjectsFailed: h.ObjectsFailed,
|
|
BytesDone: h.BytesDone,
|
|
BytesFailed: h.BytesFailed,
|
|
Bucket: h.Bucket,
|
|
Object: h.Object,
|
|
QueuedBuckets: h.QueuedBuckets,
|
|
HealedBuckets: h.HealedBuckets,
|
|
}
|
|
}
|
|
|
|
func initAutoHeal(ctx context.Context, objAPI ObjectLayer) {
|
|
z, ok := objAPI.(*erasureServerPools)
|
|
if !ok {
|
|
return
|
|
}
|
|
|
|
initBackgroundHealing(ctx, objAPI) // start quick background healing
|
|
|
|
bgSeq := mustGetHealSequence(ctx)
|
|
|
|
globalBackgroundHealState.pushHealLocalDisks(getLocalDisksToHeal()...)
|
|
|
|
if drivesToHeal := globalBackgroundHealState.healDriveCount(); drivesToHeal > 0 {
|
|
logger.Info(fmt.Sprintf("Found drives to heal %d, waiting until %s to heal the content...",
|
|
drivesToHeal, defaultMonitorNewDiskInterval))
|
|
|
|
// Heal any disk format and metadata early, if possible.
|
|
// Start with format healing
|
|
if err := bgSeq.healDiskFormat(); err != nil {
|
|
if newObjectLayerFn() != nil {
|
|
// log only in situations, when object layer
|
|
// has fully initialized.
|
|
logger.LogIf(bgSeq.ctx, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
if err := bgSeq.healDiskMeta(objAPI); err != nil {
|
|
if newObjectLayerFn() != nil {
|
|
// log only in situations, when object layer
|
|
// has fully initialized.
|
|
logger.LogIf(bgSeq.ctx, err)
|
|
}
|
|
}
|
|
|
|
go monitorLocalDisksAndHeal(ctx, z, bgSeq)
|
|
}
|
|
|
|
func getLocalDisksToHeal() (disksToHeal Endpoints) {
|
|
for _, ep := range globalEndpoints {
|
|
for _, endpoint := range ep.Endpoints {
|
|
if !endpoint.IsLocal {
|
|
continue
|
|
}
|
|
// Try to connect to the current endpoint
|
|
// and reformat if the current disk is not formatted
|
|
disk, _, err := connectEndpoint(endpoint)
|
|
if errors.Is(err, errUnformattedDisk) {
|
|
disksToHeal = append(disksToHeal, endpoint)
|
|
} else if err == nil && disk != nil && disk.Healing() != nil {
|
|
disksToHeal = append(disksToHeal, disk.Endpoint())
|
|
}
|
|
}
|
|
}
|
|
return disksToHeal
|
|
|
|
}
|
|
|
|
func initBackgroundHealing(ctx context.Context, objAPI ObjectLayer) {
|
|
// Run the background healer
|
|
globalBackgroundHealRoutine = newHealRoutine()
|
|
go globalBackgroundHealRoutine.run(ctx, objAPI)
|
|
|
|
globalBackgroundHealState.LaunchNewHealSequence(newBgHealSequence(), objAPI)
|
|
}
|
|
|
|
// monitorLocalDisksAndHeal - ensures that detected new disks are healed
|
|
// 1. Only the concerned erasure set will be listed and healed
|
|
// 2. Only the node hosting the disk is responsible to perform the heal
|
|
func monitorLocalDisksAndHeal(ctx context.Context, z *erasureServerPools, bgSeq *healSequence) {
|
|
// Perform automatic disk healing when a disk is replaced locally.
|
|
diskCheckTimer := time.NewTimer(defaultMonitorNewDiskInterval)
|
|
defer diskCheckTimer.Stop()
|
|
|
|
for {
|
|
select {
|
|
case <-ctx.Done():
|
|
return
|
|
case <-diskCheckTimer.C:
|
|
// Reset to next interval.
|
|
diskCheckTimer.Reset(defaultMonitorNewDiskInterval)
|
|
|
|
var erasureSetInPoolDisksToHeal []map[int][]StorageAPI
|
|
|
|
healDisks := globalBackgroundHealState.getHealLocalDiskEndpoints()
|
|
if len(healDisks) > 0 {
|
|
// Reformat disks
|
|
bgSeq.sourceCh <- healSource{bucket: SlashSeparator}
|
|
|
|
// Ensure that reformatting disks is finished
|
|
bgSeq.sourceCh <- healSource{bucket: nopHeal}
|
|
|
|
logger.Info(fmt.Sprintf("Found drives to heal %d, proceeding to heal content...",
|
|
len(healDisks)))
|
|
|
|
erasureSetInPoolDisksToHeal = make([]map[int][]StorageAPI, len(z.serverPools))
|
|
for i := range z.serverPools {
|
|
erasureSetInPoolDisksToHeal[i] = map[int][]StorageAPI{}
|
|
}
|
|
}
|
|
|
|
if serverDebugLog {
|
|
console.Debugf(color.Green("healDisk:")+" disk check timer fired, attempting to heal %d drives\n", len(healDisks))
|
|
}
|
|
|
|
// heal only if new disks found.
|
|
for _, endpoint := range healDisks {
|
|
disk, format, err := connectEndpoint(endpoint)
|
|
if err != nil {
|
|
printEndpointError(endpoint, err, true)
|
|
continue
|
|
}
|
|
|
|
poolIdx := globalEndpoints.GetLocalPoolIdx(disk.Endpoint())
|
|
if poolIdx < 0 {
|
|
continue
|
|
}
|
|
|
|
// Calculate the set index where the current endpoint belongs
|
|
z.serverPools[poolIdx].erasureDisksMu.RLock()
|
|
// Protect reading reference format.
|
|
setIndex, _, err := findDiskIndex(z.serverPools[poolIdx].format, format)
|
|
z.serverPools[poolIdx].erasureDisksMu.RUnlock()
|
|
if err != nil {
|
|
printEndpointError(endpoint, err, false)
|
|
continue
|
|
}
|
|
|
|
erasureSetInPoolDisksToHeal[poolIdx][setIndex] = append(erasureSetInPoolDisksToHeal[poolIdx][setIndex], disk)
|
|
}
|
|
|
|
buckets, _ := z.ListBuckets(ctx)
|
|
|
|
buckets = append(buckets, BucketInfo{
|
|
Name: pathJoin(minioMetaBucket, minioConfigPrefix),
|
|
})
|
|
|
|
// Heal latest buckets first.
|
|
sort.Slice(buckets, func(i, j int) bool {
|
|
a, b := strings.HasPrefix(buckets[i].Name, minioMetaBucket), strings.HasPrefix(buckets[j].Name, minioMetaBucket)
|
|
if a != b {
|
|
return a
|
|
}
|
|
return buckets[i].Created.After(buckets[j].Created)
|
|
})
|
|
|
|
// TODO(klauspost): This will block until all heals are done,
|
|
// in the future this should be able to start healing other sets at once.
|
|
var wg sync.WaitGroup
|
|
for i, setMap := range erasureSetInPoolDisksToHeal {
|
|
i := i
|
|
for setIndex, disks := range setMap {
|
|
if len(disks) == 0 {
|
|
continue
|
|
}
|
|
wg.Add(1)
|
|
go func(setIndex int, disks []StorageAPI) {
|
|
defer wg.Done()
|
|
for _, disk := range disks {
|
|
logger.Info("Healing disk '%v' on %s pool", disk, humanize.Ordinal(i+1))
|
|
|
|
// So someone changed the drives underneath, healing tracker missing.
|
|
tracker, err := loadHealingTracker(ctx, disk)
|
|
if err != nil {
|
|
logger.Info("Healing tracker missing on '%s', disk was swapped again on %s pool", disk, humanize.Ordinal(i+1))
|
|
tracker = newHealingTracker(disk)
|
|
}
|
|
|
|
tracker.PoolIndex, tracker.SetIndex, tracker.DiskIndex = disk.GetDiskLoc()
|
|
tracker.setQueuedBuckets(buckets)
|
|
if err := tracker.save(ctx); 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.
|
|
return
|
|
}
|
|
|
|
err = z.serverPools[i].sets[setIndex].healErasureSet(ctx, buckets, tracker)
|
|
if err != nil {
|
|
logger.LogIf(ctx, err)
|
|
continue
|
|
}
|
|
|
|
logger.Info("Healing disk '%s' on %s pool complete", disk, humanize.Ordinal(i+1))
|
|
var buf bytes.Buffer
|
|
tracker.printTo(&buf)
|
|
logger.Info("Summary:\n%s", buf.String())
|
|
logger.LogIf(ctx, tracker.delete(ctx))
|
|
|
|
// Only upon success pop the healed disk.
|
|
globalBackgroundHealState.popHealLocalDisks(disk.Endpoint())
|
|
}
|
|
}(setIndex, disks)
|
|
}
|
|
}
|
|
wg.Wait()
|
|
}
|
|
}
|
|
}
|