[CentOS] When should LVM be used?

[Ron Blizzard]

On Fri, Jul 30, 2010 at 8:33 AM, Todd Denniston
<Todd.Denniston at tsb.cranrdte.navy.mil> wrote:

> Best use for LVM I have seen...
> Reducing the number of times you need to enter the LUKS pass phrase to once per boot, i.e., one LUKS
> containing an LVM of / and Swap so that the system can boot with one entry of the pass phrase and if
> you then have other partitions, such as an independent /home, /etc/crypttab can be used (with
> appropriately constructed and protected cryptpassphrase files).

At this point I don't even know what a LUKS pass phrase is -- is this
something I'm liable to run into on a home desktop computer?

-- 
RonB -- Using CentOS 5.5