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CONTAP-426766:EMS 日志报告 VBN 错误压缩块的 WAFL 不一致

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问题描述

NetApp 在 FAS 和 Cloud Volumes ONTAP 产品上发现了一个软件问题,该问题涉及 Flash Cache 和 FabricPool (FP) 之间的交互,可能会导致故障转移后将不正确的数据返回给客户端。
症状:

  • 读回客户端失败
    • 节点可能会记录指示故障的 EMS 条目(请参阅下面的示例)
  • 客户端应用程序失败或检测到数据不一致

EMS 日志条目示例:
  wafl.incons.compressed.buf: WAFL inconsistent: bad compressed block at VBN XXXXXXXXXXX (vvbn:XXXXXXXXXX fbn:XXXX level:X compression group first vbn:XXXXXXX compression group size X) in inode (fileid:XXXXXXX snapid:X) in volume volname@vserver:XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX.

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