Companycom wants to&e

单项选择题 Companycom wants to apply a PTF to the p5 590 system. After doing a preview install, the output shows there is insufficient space in the /usr filesystem. The root volume group has no available physical partitions left. They do not want to add additional disk drives to the system, but have a jfs2 filesystem that is only 8% used. What could they do to utilize space in the jfs2 filesystem to apply this PTF?（）: A、Backup the filesystem and recreate smaller; B、Use the chfs to reduce the filesystem size; C、Use cplv to copy filesystem to smaller size; D、Use migratepv to copy filesystem to smaller size

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