fix: crawler to skip healing the drives in a set being healed (#11274)

If an erasure set had a drive replacement recently, we don't
need to attempt healing on another drive with in the same erasure
set - this would ensure we do not double heal the same content
and also prioritizes usage for such an erasure set to be calculated
sooner.

cmd/erasure-common.go

@@ -18,7 +18,6 @@ package cmd
 
 import (
 	"context"
-	"sort"
 	"sync"
 
 	"github.com/minio/minio/pkg/sync/errgroup"
@@ -37,65 +36,6 @@ func (er erasureObjects) getLoadBalancedLocalDisks() (newDisks []StorageAPI) {
 	return newDisks
 }
 
-type sortSlices struct {
-	disks []StorageAPI
-	infos []DiskInfo
-}
-
-type sortByOther sortSlices
-
-func (sbo sortByOther) Len() int {
-	return len(sbo.disks)
-}
-
-func (sbo sortByOther) Swap(i, j int) {
-	sbo.disks[i], sbo.disks[j] = sbo.disks[j], sbo.disks[i]
-	sbo.infos[i], sbo.infos[j] = sbo.infos[j], sbo.infos[i]
-}
-
-func (sbo sortByOther) Less(i, j int) bool {
-	return sbo.infos[i].UsedInodes < sbo.infos[j].UsedInodes
-}
-
-func (er erasureObjects) getOnlineDisksSortedByUsedInodes() (newDisks []StorageAPI) {
-	disks := er.getDisks()
-	var wg sync.WaitGroup
-	var mu sync.Mutex
-	var infos []DiskInfo
-	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])
-			infos = append(infos, di)
-			mu.Unlock()
-		}()
-	}
-	wg.Wait()
-
-	slices := sortSlices{newDisks, infos}
-	sort.Sort(sortByOther(slices))
-
-	return slices.disks
-}
-
 func (er erasureObjects) getOnlineDisks() (newDisks []StorageAPI) {
 	disks := er.getDisks()
 	var wg sync.WaitGroup