What are the advantages of LVM?

[Dick Davies]

On 22/05/06, Michael T. Richter <ttmrichter at gmail.com> wrote:

>  On Mon, 2006-22-05 at 22:08 +1000, ruscook wrote:

>      So /home is a partition of 100G, it fills up (as they do), so I buy a new 120GB HDD.
>      If /home is LVM I can create a physical volume on the new HDD and dynamically add it to /home making /home 220G.

>  This I knew and, yes, it is seriously cool.  (If you've got a desktop machine.)  This part of LVM, however, isn't really all that useful to me given that I have a laptop and am seriously space-restricted.  I can add disks, but all removable and LVM really doesn't like storage that can vanish without warning it seems.  So if I ever get myself a desktop machine again, I'll probably configure LVM for precisely the reasons you just gave: the ability to add new disks and not have to repartition and shift data around, etc. is very, very, very nice.

It's good on a laptop (or anywhere space is tight) because you avoid those
situations where /home is 99% full and /var has 5Gb free on it.

>  I still don't see how to resize dynamically, though.  Lots of places and people positively gush over this purported ability, but I'm just not finding it.

See my earlier post in this thread.

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