What is $HOME/.lvm

Question

What is $HOME/.lvm (lvm history) and where we use it in LVM?

Answer 1

It appears to be a part of GNU Readline: it keeps track of history for the interactive lvm command just like bash_history does for bash. See the lvm(8) manpage for details.

Answer 2

The Logical Volume Manager (LVM) can be used either directly e.g.:

# lvdisplay
  --- Logical volume ---
  [..]

# vgscan
  Found volume group "data" using metadata type lvm2

or interactively e.g.:

# lvm
lvm> lvdisplay 
  --- Logical volume ---
  [...]
   
lvm> vgscan
  Found volume group "data" using metadata type lvm2

When used interactively the command history is kept in ~/.lvm_history:

# cat ~/.lvm_history 
lvdisplay 
vgscan

Similar to the bash history file(~/.bash_history):

# cat ~/.bash_history 
lvscan
pvscan