tier = oi.TransitionedObject.Tier
			}
			if sizeS.tiers != nil {
				if st, ok := sizeS.tiers[tier]; ok {
					sizeS.tiers[tier] = st.add(oi.tierStats())
				}
			}
		}

		// apply tier sweep action on free versions
		for _, freeVersion := range fivs.FreeVersions {
			oi := freeVersion.ToObjectInfo(item.bucket, item.objectPath(), versioned)

	}
	if evt.StorageClass != "TIER-1" {
		t.Fatalf("Expected TIER-1 but got %s", evt.StorageClass)
	}

	evt = lc.eval(obj2, now)
	if evt.Action != TransitionVersionAction {
		t.Fatalf("Expected action: %s but got %s", TransitionVersionAction, evt.Action)
	}
	if evt.StorageClass != "TIER-2" {
		t.Fatalf("Expected TIER-2 but got %s", evt.StorageClass)
	}
}

	// from latestFileInfo to get the quorum
	return dataBlocks, writeQuorum, nil
}

const (
	tierFVID     = "tier-free-versionID"
	tierFVMarker = "tier-free-marker"
	tierSkipFVID = "tier-skip-fvid"
)

// SetTierFreeVersionID sets free-version's versionID. This method is used by
// object layer to pass down a versionID to set for a free-version that may be

| `minio_node_tier_requests_success`                 | Number of requests to download object from warm tier that were successful   | 
| `minio_node_tier_requests_failure`                 | Number of requests to download object from warm tier that were failure      | 

## System Metrics

| Name                                       | Description                                                                                                     |

	// TransitionedObjName is the object name on the remote tier corresponding
	// to object (version) on the source tier.
	TransitionedObjName string `msg:"to"`
	// TransitionTier is the storage class label assigned to remote tier.
	TransitionTier string `msg:"tt"`
	// TransitionVersionID stores a version ID of the object associate
	// with the remote tier.
	TransitionVersionID string `msg:"tv"`

	const (
		ilmSrc                     = "ilm-src"
		ilmAction                  = "ilm-action"
		ilmDue                     = "ilm-due"
		ilmRuleID                  = "ilm-rule-id"
		ilmTier                    = "ilm-tier"
		ilmNewerNoncurrentVersions = "ilm-newer-noncurrent-versions"
		ilmNoncurrentDays          = "ilm-noncurrent-days"
	)
	tags := make(map[string]interface{}, 5)
	if src > lcEventSrc_None {
		tags[ilmSrc] = src.String()

	fivs, err := getAllFileInfoVersions(xlMetaBuf, volume, path, allParts)
	if err != nil {
		return fivs, err
	}
	n := 0
	for _, fi := range fivs.Versions {
		// Filter our tier object delete marker
		if !fi.TierFreeVersion() {
			fivs.Versions[n] = fi
			n++
		} else {
			fivs.FreeVersions = append(fivs.FreeVersions, fi)
		}
	}
	fivs.Versions = fivs.Versions[:n]
	// Update numversions

		vID, err := uuid.Parse(fi.TierFreeVersionID())
		if err != nil {
			panic(fmt.Errorf("Invalid Tier Object delete marker versionId %s %v", fi.TierFreeVersionID(), err))
		}
		freeEntry := xlMetaV2Version{Type: DeleteType, WrittenByVersion: globalVersionUnix}
		freeEntry.DeleteMarker = &xlMetaV2DeleteMarker{
			VersionID: vID,

		}

		if i > 3 {
			// Simulate transition of a version
			transfi := fi
			transfi.TransitionStatus = lifecycle.TransitionComplete
			transfi.TransitionTier = "MINIO-TIER"
			transfi.TransitionedObjName = mustGetUUID()
			xl.DeleteVersion(transfi)

			fi.SetTierFreeVersionID(mustGetUUID())
			// delete this version leading to a free version
			xl.DeleteVersion(fi)

			}
		case errors.Is(err, kes.ErrKeyExists):
			apiErr = APIError{
				Code:           "XMinioKMSKeyExists",
				Description:    err.Error(),
				HTTPStatusCode: http.StatusConflict,
			}

		// Tier admin API errors
		case errors.Is(err, madmin.ErrTierNameEmpty):
			apiErr = APIError{
				Code:           "XMinioAdminTierNameEmpty",
				Description:    err.Error(),
				HTTPStatusCode: http.StatusBadRequest,
			}