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ボリューム移動処理が遅い

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ontap-9
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perf<a>2009386844</a>
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環境

ONTAP 9

問題

  • 複数ボリュームの移動操作の実行中に速度低下が報告されました。
  • ボリューム移動については、エラーもエラーもハングも発生しません
  • statit 出力にディスク使用率が高いことがレポートされる。

disk        ut%  xfers  ureads--chain-usecs writes--chain-usecs cpreads-chain-usecs greads--chain-usecs gwrites-chain-usecs
/data_aggr1/plex0/rg0:                                  
0b.03.11      10  23.42   0.00   ....    .  11.21  61.56   133  12.21  57.15   50   0.00   ....    .   0.00   ....    .  
0b.03.13      11  23.80   0.00   ....    .  11.66  59.25   147  12.14  57.37   55   0.00   ....    .   0.00   ....    .  
0b.03.15      100 158.69  120.29   5.43  2299  10.26  34.39   553  28.15   9.93   839   0.00   ....    .   0.00   ....    .  
0b.03.17      100 156.09  118.85   5.39  2253   9.96  34.97   553  27.28  10.05   794   0.00   ....    .   0.00   ....    .  
0b.03.19      100 158.41  121.44   5.35  2337   9.95  35.11   542  27.01   9.93   835   0.00   ....    .   0.00   ....    .  
0b.03.21      100 153.05  115.90   5.59  2158   9.88  35.00   524  27.27   9.97   803   0.00   ....    .   0.00   ....    .  
0b.03.23      100 162.10  124.59   5.45  2262  10.05  35.10   528  27.45  10.10   809   0.00   ....    .   0.00   ....    .  
0b.03.25      100 158.72  121.88   5.39  2298   9.82  34.82   573  27.02  10.05   838   0.00   ....    .   0.00   ....    .  
0b.03.27      100 157.60  120.63   5.49  2274   9.85  34.90   571  27.11   9.82   875   0.00   ....    .   0.00   ....    .  
0b.03.29      100 157.67  120.74   5.39  2328   9.96  35.29   568  26.97  10.10   857   0.00   ....    .   0.00   ....    .  

 

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