mirror of https://github.com/minio/minio.git
134 lines
3.6 KiB
Go
134 lines
3.6 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
|
|
//
|
|
// This file is part of MinIO Object Storage stack
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"context"
|
|
"runtime"
|
|
|
|
"github.com/minio/madmin-go/v2"
|
|
)
|
|
|
|
// healTask represents what to heal along with options
|
|
//
|
|
// path: '/' => Heal disk formats along with metadata
|
|
// path: 'bucket/' or '/bucket/' => Heal bucket
|
|
// path: 'bucket/object' => Heal object
|
|
type healTask struct {
|
|
bucket string
|
|
object string
|
|
versionID string
|
|
opts madmin.HealOpts
|
|
// Healing response will be sent here
|
|
respCh chan healResult
|
|
}
|
|
|
|
// healResult represents a healing result with a possible error
|
|
type healResult struct {
|
|
result madmin.HealResultItem
|
|
err error
|
|
}
|
|
|
|
// healRoutine receives heal tasks, to heal buckets, objects and format.json
|
|
type healRoutine struct {
|
|
tasks chan healTask
|
|
workers int
|
|
}
|
|
|
|
func activeListeners() int {
|
|
// Bucket notification and http trace are not costly, it is okay to ignore them
|
|
// while counting the number of concurrent connections
|
|
return int(globalHTTPListen.Subscribers()) + int(globalTrace.Subscribers())
|
|
}
|
|
|
|
func waitForLowHTTPReq() {
|
|
var currentIO func() int
|
|
if httpServer := newHTTPServerFn(); httpServer != nil {
|
|
currentIO = httpServer.GetRequestCount
|
|
}
|
|
|
|
globalHealConfig.Wait(currentIO, activeListeners)
|
|
}
|
|
|
|
func initBackgroundHealing(ctx context.Context, objAPI ObjectLayer) {
|
|
// Run the background healer
|
|
globalBackgroundHealRoutine = newHealRoutine()
|
|
for i := 0; i < globalBackgroundHealRoutine.workers; i++ {
|
|
go globalBackgroundHealRoutine.AddWorker(ctx, objAPI)
|
|
}
|
|
|
|
globalBackgroundHealState.LaunchNewHealSequence(newBgHealSequence(), objAPI)
|
|
}
|
|
|
|
// Wait for heal requests and process them
|
|
func (h *healRoutine) AddWorker(ctx context.Context, objAPI ObjectLayer) {
|
|
for {
|
|
select {
|
|
case task, ok := <-h.tasks:
|
|
if !ok {
|
|
return
|
|
}
|
|
|
|
var res madmin.HealResultItem
|
|
var err error
|
|
switch task.bucket {
|
|
case nopHeal:
|
|
task.respCh <- healResult{err: errSkipFile}
|
|
continue
|
|
case SlashSeparator:
|
|
res, err = healDiskFormat(ctx, objAPI, task.opts)
|
|
default:
|
|
if task.object == "" {
|
|
res, err = objAPI.HealBucket(ctx, task.bucket, task.opts)
|
|
} else {
|
|
res, err = objAPI.HealObject(ctx, task.bucket, task.object, task.versionID, task.opts)
|
|
}
|
|
}
|
|
|
|
task.respCh <- healResult{result: res, err: err}
|
|
case <-ctx.Done():
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
func newHealRoutine() *healRoutine {
|
|
workers := runtime.GOMAXPROCS(0) / 2
|
|
if workers == 0 {
|
|
workers = 4
|
|
}
|
|
return &healRoutine{
|
|
tasks: make(chan healTask),
|
|
workers: workers,
|
|
}
|
|
}
|
|
|
|
// healDiskFormat - heals format.json, return value indicates if a
|
|
// failure error occurred.
|
|
func healDiskFormat(ctx context.Context, objAPI ObjectLayer, opts madmin.HealOpts) (madmin.HealResultItem, error) {
|
|
res, err := objAPI.HealFormat(ctx, opts.DryRun)
|
|
|
|
// return any error, ignore error returned when disks have
|
|
// already healed.
|
|
if err != nil && err != errNoHealRequired {
|
|
return madmin.HealResultItem{}, err
|
|
}
|
|
|
|
return res, nil
|
|
}
|