mirror of https://github.com/minio/minio.git
92 lines
2.6 KiB
Go
92 lines
2.6 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"
|
|
"sync"
|
|
)
|
|
|
|
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() {
|
|
if disks[i-1].Healing() == nil && disks[i-1].IsOnline() {
|
|
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]
|
|
}
|