lvreduce:tldr:7cd2a
lvreduce: Reduce a volume's size by 40 GB as well as the underlying filesystem.
$ lvreduce --size -${40G} -r ${logical_volume}
try on your machine
This command is used to reduce the size of a logical volume in Linux.
Here is a breakdown of the different parts of the command:
lvreduce: This is the command used to reduce the size of a logical volume.--size: This option is used to specify the new size of the logical volume.-${40G}: This specifies the amount by which the logical volume should be reduced. The${40G}is a variable indicating a value of 40 gigabytes (G). The minus sign (-) before the value indicates that the size should be reduced.-r: This option is used to also resize the file system on the logical volume. By including this option, the file system will be resized along with the logical volume.${logical_volume}: This variable represents the name of the logical volume that you want to reduce.
So, when this command is executed, it will reduce the size of the specified logical volume by the specified amount, and also resize the file system accordingly.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.