minio/cmd/erasure-common.go
Harshavardhana 2e6f8bdf19
do not skip healing disks during deletes (#14394)
healing disks take active I/O it is possible
that deleted objects might stay in .trash
folder for a really long time until the drive
is fully healed.

this PR changes it such that we are making sure
we purge the active content written to these
disks as well.
2022-02-23 14:30:46 -08:00

122 lines
3.2 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"
"sync"
)
func (er erasureObjects) getOnlineDisks() (newDisks []StorageAPI) {
disks := er.getDisks()
var wg sync.WaitGroup
var mu sync.Mutex
for _, i := range hashOrder(UTCNow().String(), len(disks)) {
i := i
wg.Add(1)
go func() {
defer wg.Done()
if disks[i-1] == nil {
return
}
di, err := disks[i-1].DiskInfo(context.Background())
if err != nil || di.Healing {
// - Do not consume disks which are not reachable
// unformatted or simply not accessible for some reason.
//
// - Do not consume disks which are being healed
//
// - Future: skip busy disks
return
}
mu.Lock()
newDisks = append(newDisks, disks[i-1])
mu.Unlock()
}()
}
wg.Wait()
return newDisks
}
func (er erasureObjects) getLoadBalancedLocalDisks() (newDisks []StorageAPI) {
disks := er.getDisks()
// Based on the random shuffling return back randomized disks.
for _, i := range hashOrder(UTCNow().String(), len(disks)) {
if disks[i-1] != nil && disks[i-1].IsLocal() {
newDisks = append(newDisks, disks[i-1])
}
}
return newDisks
}
// getLoadBalancedDisks - fetches load balanced (sufficiently randomized) disk slice.
// ensures to skip disks if they are not healing and online.
func (er erasureObjects) getLoadBalancedDisks(optimized bool) []StorageAPI {
disks := er.getDisks()
if !optimized {
var newDisks []StorageAPI
for _, i := range hashOrder(UTCNow().String(), len(disks)) {
newDisks = append(newDisks, disks[i-1])
}
return newDisks
}
var wg sync.WaitGroup
var mu sync.Mutex
newDisks := map[uint64][]StorageAPI{}
// Based on the random shuffling return back randomized disks.
for _, i := range hashOrder(UTCNow().String(), len(disks)) {
i := i
wg.Add(1)
go func() {
defer wg.Done()
if disks[i-1] == nil {
return
}
di, err := disks[i-1].DiskInfo(context.Background())
if err != nil || di.Healing {
// - Do not consume disks which are not reachable
// unformatted or simply not accessible for some reason.
//
// - Do not consume disks which are being healed
//
// - Future: skip busy disks
return
}
mu.Lock()
// Capture disks usage wise upto resolution of MiB
newDisks[di.Used/1024/1024] = append(newDisks[di.Used/1024/1024], disks[i-1])
mu.Unlock()
}()
}
wg.Wait()
var max uint64
for k := range newDisks {
if k > max {
max = k
}
}
// Return disks which have maximum disk usage common.
return newDisks[max]
}