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.

On Fri, Oct 22, 2021 at 8:38 AM Tim via users <users@lists.fedoraproject.org> wrote:
On Fri, 2021-10-22 at 09:09 -0400, John Mellor wrote:
> Maybe moving up to a less complex storage system with built-in volume
> and raid management and dynamic error detection/correction (like
> btrfs or zfs) would also be a better move at this point.

I've always queried the point of using LVM by default.  I'd suggest
that *MOST* users only have one hard drive, especially if it's a
laptop.  So multi-drive-spanning systems aren't needed.

If you do want multi-drive-spanning storage, then you probably have the
knowledge to set up a system using an alternative filing system.  If
you don't, you really should, because you're in for a world of fun and
games if it goes belly up.

Yes, I'm aware LVM isn't *all* about multidisk, but it's one of its
prime features.

--

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