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ESXi vRDMを使用するLUNでスペースが再生されない

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Category:
ontap-9
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san
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環境

  • ONTAP 9
  • iSCSI
  • VMware ESXi 8.0.2
  • 仮想互換性のRDM(vRDM)
  • Windows Server 2022

問題

  • vRDMに接続されたiSCSI LUNを備えたVMware ESXi上のWindows ServerゲストOS
  • ONTAP LUNではspace-allocation が有効になっていますが、Windowsでファイルを削除しても、ONTAPに表示される使用済みスペースには影響しません。
  • Windowsで削除通知 が有効になっている場合:
fsutil behavior query DisableDeleteNotify
NTFS DisableDeleteNotify = 0  (Allows TRIM operations to be sent to the storage device)
ReFS DisableDeleteNotify = 0  (Allows TRIM operations to be sent to the storage device)
  • ONTAPがunmap_reqs を受信しない:
statistics show -sample-id lun_12
 
Object: lun
Instance: /vol/vol_12/lun_12
Start-time: 8/22/2024 14:39:49
End-time: 8/23/2024 11:04:07
Elapsed-time: 73458s
Scope: iscsi_01
Number of Constituents: 2 (complete_aggregation)
Counter                           Value
-------------------------------- --------------------------------
unmap_error_to_good_count                    0
unmap_reqs                            0
unmap_too_big_error_count                    0
unmap_too_many_error_count                    0
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