单选题A user calls to report they are getting I/O errors on a file system. Which of the following tools should be used to isolate this problem？（）AdfBdiagrptCerrmsgDerrpt
单选题
A user calls to report they are getting I/O errors on a file system. Which of the following tools should be used to isolate this problem？（）
A
df
B
diagrpt
C
errmsg
D
errpt
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