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ブロック温度はボリュームの移動後も維持されますか?

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環境

  • ONTAP 9
  • FabricPool
  • 階層化

回答

いいえ。ブロック温度はアグリゲートメタデータ内に格納され、ボリュームを別のアグリゲートに移動するとリセットされます。

追加情報

  • 2つのFabricPool アグリゲートが構成されている。
myCluster::*>aggr object-store show
Aggregate      Object Store Name Availability   Mirror Type
-------------- ----------------- -------------  -----------
aggr2_fp       svm-s3-DST        available      primary
aggr4_fp       svm-s3-DST        available      primary
2 entries were displayed.

 
  • ボリューム vol_fp_moveme は、 aggr2_fptiering-policyauto がおよび tiering-minimum-cooling-days に設定されたアグリゲートでホストされ 2ています。データが48時間以上読み取られないと、設定されたクラウド階層に階層化されます。
myCluster::*>vol show vol_fp_moveme -fields tiering-minimum-cooling-days, tiering-policy, aggregate
vserver   volume        aggregate tiering-policy tiering-minimum-cooling-days
--------- ------------- --------- -------------- ----------------------------
svm1      vol_fp_moveme  aggr2_fp       auto                  2
  • 現在、すべてのデータがに格納 Performance Tierされていますが、階層化されたデータはmyS3Fabricpool まだありません。
myCluster::*>vol show-footprint vol_fp_moveme
Vserver : svm1
Volume  : vol_fp_moveme
Feature                                          Used    Used%
--------------------------------           ----------    -----
Volume Data Footprint                          8.12MB       0%
Footprint in Performance Tier                  9.77MB     100%
Footprint in myS3Fabricpool                       0B       0%
  • WAFL のコールドデータレポート(CDR)統計には 2001 、経過日 0 to 2 days001 数が経過したブロックが表示されます。将来階層化されることが予想されます。
myCluster::>set adv
Warning: These advanced commands are potentially dangerous; use them only when directed to do so by NetApp personnel.
Do you want to continue? {y|n}: y

myCluster::*>statistics start -sample-id mysample -object wafl_cdr_vol
Statistics collection is being started for sample-id: mysample

myCluster::*>statistics stop -sample-id mysample
Statistics collection is being stopped for sample-id: mysample

myCluster::*>statistics show -sample-id mysample -object wafl_cdr_vol -instance aggr_aggr2_fp_vol_vol_fp_moveme -counter blks_cooled_by_ranges|blks_scanned|blks_days
Object: wafl_cdr_vol
Instance: aggr_aggr2_fp_vol_vol_fp_moveme
Start-time: 3/24/2023 14:56:01
End-time: 3/24/2023 14:56:08
Elapsed-time: 7s
Scope: myCluster-01
Counter                 Value
---------------------- ------
blks_cooled_by_ranges       -
0 to 2 days              2001
3 to 5 days                 0
6 to 14 days                0
15 to 31 days               0
32 to 45 days               0
>45 days                    0
blks_days                                                       -
000                         0
001                      2001
 
  • ボリュームが別のFabricPool アグリゲートに移動された aggr4_fp場合:
myCluster::*>volume move start -vserver svm1 -volume vol_fp_moveme -destination-aggregate aggr4_fp
[Job 1337] Job is queued: Move "vol_fp_moveme" in Vserver "svm1" to aggregate "aggr4_fp". Use the "volume move show -vserver svm1 -volume vol_fp_moveme" command to view the status of this operation.

myCluster::*>vol show vol_fp_moveme -fields tiering-minimum-cooling-days, tiering-policy, aggregate
vserver   volume        aggregate tiering-policy tiering-minimum-cooling-days
--------- ------------- --------- -------------- ----------------------------
svm1 vol_fp_moveme       aggr4_fp           auto                  2

myCluster::*>statistics start -sample-id mysample -object wafl_cdr_vol
Statistics collection is being started for sample-id: mysample

myCluster::*>statistics stop -sample-id mysample
Statistics collection is being stopped for sample-id: mysample

myCluster::*>vol show -vserver svm1 -volume vol_fp_moveme -fields name-ordinal
vserver   volume        name-ordinal
--------- ------------- ------------
svm1      vol_fp_moveme       1
 
  • ブロック温度がリセットされます。データが階層化されるまでにさらに2日かかります。
myCluster::*>statistics show -sample-id mysample -object wafl_cdr_vol -instance aggr_aggr4_fp_vol_vol_fp_moveme(1) -counter blks_cooled_by_ranges|blks_scanned|blks_days
Object: wafl_cdr_vol
Instance: aggr_aggr4_fp_vol_vol_fp_moveme(1)
Start-time: 3/24/2023 15:12:14
End-time: 3/24/2023 15:12:18
Elapsed-time: 4s
Scope: myCluster-01
Counter                 Value
---------------------- ------
blks_cooled_by_ranges       -
0 to 2 days                 0
3 to 5 days                 0
6 to 14 days                0
15 to 31 days               0
32 to 45 days               0
>45 days                    0
blks_days                 -
000                         0
001                       0


 
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