单选题A system administrator has a two-disk volume group （testvg） with one logical volume （testlv） which has just been mirrored across both disk drives. Which of the following commands can be used to turn off quorum？（）Achvg -Qn testvgBchlv -Qn testlvCvaryoffvg testvg； varyonvg -Qn testvgDvaryoffvg testvg； exportvg testvg； importvg -Qn testvg； varyonvg testvg
单选题
A system administrator has a two-disk volume group （testvg） with one logical volume （testlv） which has just been mirrored across both disk drives. Which of the following commands can be used to turn off quorum？（）
A
chvg -Qn testvg
B
chlv -Qn testlv
C
varyoffvg testvg； varyonvg -Qn testvg
D
varyoffvg testvg； exportvg testvg； importvg -Qn testvg； varyonvg testvg
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