A Linux administrator needs to create a new 20GB logical volume named reports from an existing volume group called datavg. Which of the following commands will accomplish this task?
lvcreate -L 20G -n reports datavg
lvcreate -s 20G -n reports datavg
vgcreate -L 20G -n reports datavg
pvcreate --size 20G --name reports datavg
The correct command is lvcreate -L 20G -n reports datavg. The lvcreate command is used to create a new logical volume. The -L option specifies the size of the logical volume (in this case, 20 gigabytes). The -n option provides a name for the new logical volume. The final argument, datavg, is the name of the volume group from which the space will be allocated. The command vgcreate is incorrect because it is used to create volume groups, not logical volumes. The command lvcreate -s 20G... is incorrect because the -s option is used to create a snapshot of an existing logical volume, not to define the size of a new one. The command pvcreate is incorrect as it is used to initialize a physical disk or partition for use by LVM and does not create logical volumes or accept size and name parameters in this way.
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