On Oct 22, 2021, at 13:16, Roger Heflin <rogerhef...@gmail.com> wrote:
> 
> LVM is also used to make separate LV's such that critical filesystems can 
> have their own space and be protected against another filesystem filling up 
> (if you only had a single filesystem).
> 
> There are reasons to use it, especially if you don't want filling up a /data 
> only filesystem to impact the OS.

While you can do this with separate partitions with file systems on them, the 
advantage of LVM is that you can resize the volumes and not have to 
repartition.  Root volume running out of space?  Grow it and take the space 
from your Home volume.

I’ve also used the fact that LVM allows you to seamlessly transfer data to a 
new disk, live, when moving to new hardware.

Eventually, I hope btrfs makes LVM obsolete.  

—
Jonathan Billings
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