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"kernel: sdX: assuming drive cache: write through" が表示される

Solution Verified - Updated -

Issue

  • システムを起動すると、次のメッセージが常に出力されます。

    kernel: sdX: Cache data unavailable
    kernel: sdX: assuming drive cache: write through
    
    -or-
    
    kernel: sdX: Asking for cache data failed
    kernel: sdX: assuming drive cache: write through
    

    sdX は、sda、sdb などを意味します。

  • これは何か問題があるということでしょうか。

Environment

  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5

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