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单项选择题

The /systest filesystem is associated with the /dev/testlv logical volume on the testvg volume group. The testvg volume group is assigned to physical volumes hdisk2 and hdisk3. Which command can the system administrator use to determine if the /systest filesystem is mirrored？（）

A.df
B.lslv
C.lsfs
D.lsdev

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单项选择题

A system administrator has a failed disk drive that is mirrored to another disk drive. They successfully removed the logical volume copies off of the failed disk drive. Which of the following commands should be used to remove the failed disk drive from the volume group？（）

A.chvg
B.rmdev
C.reducevg
D.exportvg
单项选择题

A system administrator would like to rename volume group oldvg to newvg. This volume group resides on hdisk1. What is the appropriate procedure to perform this？（）

A.reboot the server in maintenance mode；migratevg -y newvg oldvg；reboot the server in normal mode
B.unmount all filesystems in the volume group；varyoffvg oldvg；migratepv -y oldvg -n newvg  varyonvg newvg
C.unmount all filesystems in the volume group；varyoffvg oldvg；exportvg oldvg；importvg -y newvg hdisk1；mount all
D.unmount all filesystems in the volume group；varyoffvg oldvg；for each logical volume in the volume group do cplv -v oldvg -y newvg；varyonvg newvg；mount all
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