由卷脱机导致的 CPU N-blade 极高延迟

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Category:: ontap-9

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ONTAP 9

问题

来自 CPU N-blade 的极高延迟
EMS 中显示卷离线

[?] Thu Aug 10 14:22:17 +0900 [node02: vv_config_worker11: wafl.vvol.offline:debug]: Volume 'xxxxxxxx' has been set temporarily offline

NFS 倒带和放弃的统计检查显示数百万个 VLDB 查找

Cluster::*> set -privilege diagnostics; statistics start -object rw_ctx -counter nfs_rewinds|nfs_giveups
Cluster::*> statistics show -node node-name
Object: rw_ctx
Instance: rw_ctx
Start-time: 4/22/2026 16:16:01
End-time: 4/22/2026 16:16:20
Elapsed-time: 19s
Scope: node-name
Counter                            Value
  -------------------------------- --------------------------------
  nfs_giveups                            -
             Credentials                 0
               Export                 0
            VLDB Lookup                 15Mil. <----