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使用ESXi vRDM无法回收LUN上的空间

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适用场景

  • ONTAP 9
  • iSCSI
  • VMware ESXi 8.0.2
  • 虚拟兼容性中的RDM (vRDM)
  • Windows Server 2022

问题描述

  • VMware ESXi上的Windows Server子操作系统、其中iSCSI LUN与 vRDM连接
  • ONTAP LUN已启用space-allocation 、但在Windows中删除文件不会影响ONTAP中显示的已用空间
  • Windows已 启用删除通知：
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不接收unmap_reqs ：
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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