问题:
A . It repairs blocks that have read disk I/O errors.
B . It checks whether the alias metadata directory and the file directory are linked correctly.
C . It repairs blocks by always reading them from the mirror copy and writing them to the original location.
D . It reads the blocks from a good copy of an ASM mirror and rewrites them to an alternate location on disk if the blocks on the original location cannot be read properly.
● 参考解析
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