lvresize

changes the size of a logical volume, either extending or reducing it

TLDR

Set volume to specific size

$ sudo lvresize -L 120G [vg]/[lv]

Extend with filesystem resize

$ sudo lvresize -L +120G --resizefs [vg]/[lv]

Extend to 100% free space

$ sudo lvresize -l 100%FREE [vg]/[lv]

Reduce with filesystem resize

$ sudo lvresize -L -120G --resizefs [vg]/[lv]

SYNOPSIS

lvresize [options] -L size vg/lv

DESCRIPTION

lvresize changes the size of a logical volume, either extending or reducing it. It combines the functionality of lvextend and lvreduce into a single command.

PARAMETERS

-L, --size SIZE

New size (+/- for relative change)

-l, --extents EXTENTS

Size in extents (100%FREE, +50%FREE)

-r, --resizefs

Also resize underlying filesystem

-f, --force

Force resize without confirmation

-n, --nofsck

Skip filesystem check

CAVEATS

Reducing requires filesystem resize first or --resizefs. Extending is generally safe. Always backup before reducing.