lvextend - add space to an LVM logical volume
lvextend [OPTIONS] LV [PV...]Options you will use
-l, --extents [+]NUMBER[%{VG|FREE}]- Size in extents: -l +100%FREE uses all the free space in the volume group.
-L, --size [+]SIZE- Size in bytes: -L +5G.
-r, --resizefs- Also grow the file system inside it (runs resize2fs / xfs_growfs).
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