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单项选择题The system administrator has determined that a new JFS log needs to be created on a different disk， in order to decrease an I/O bottleneck. Which of the following steps are the most correct？（） 

A、 mklv -t jfslog -y LVname VGname 1 PVname     logform /dev/LVname      chfs -a log=/dev/LVname /filesystemname m     ount and unmount filesystem

B、 mklv -t jfslog -y LVname VGname PVname       unmount filesystem        vi /etc/filesystems， change entry for lv to point filesystem to new JFS log       mount filesystem

C、 mklvcopy -a jfslog -y LVname VGname 1 PVname       chfs -a log=/dev/LVname /filesystemname       unmount and mount file system

D、 mklvcopy  -t jfslog -y LVname VGname 1 PVname       logform /dev/LVname        vi /etc/filesystems， change entry for lv to point filesystem to new JFS log       unmount and mount filesystem

  • A

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