【单项选择题】
An administrator needs to apply a Technology Level update. During the preview install, the output indicates that there is insufficientspace in the /usr filesystem. Review of the root volume group indicates there are no available physical partitions, but the /test jfs2 filesystem is only 8% used.<br /> What is the most efficient method to use the available space in the /test filesystem to apply theupdate?（）<p> An administrator needs to apply a Technology Level update. During the preview install, the output indicates that there is insufficientspace in the /usr filesystem. Review of the root volume group indicates there are no available physical partitions, but the /test jfs2 filesystem is only 8% used.<br /> What is the most efficient method to use the available space in the /test filesystem to apply theupdate?（）</p>
A、A.Use chfs to reduce the /test filesystem
B、B.Use cplv to copy the /test filesystem to a smaller logical volume
C、C.Use migratepv l to move the /test filesystem to a different volume group
D、D.Backup the /test filesystem, remove it, and recreate it with a smaller size
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