At Mon, 9 Aug 2010 04:00:27 -0500 CentOS mailing list <centos@xxxxxxxxxx> wrote:
>
> On Sat, Jul 31, 2010 at 8:52 AM, Drew <drew.kay@xxxxxxxxx> wrote:
>
> > LVM adds flexability that regular partitioning can't.
> >
> > Example 1. Say you've mounted an entire 2TB disk as /home and it's
> > almost full. Now you want to add another 2TB to /home. How do you?
> > Easiest way is with LVM. You just add the new disk into LVM's pool of
> > storage and expand the home partition (Logical volume) to use the new
> > space. Now you have a single filesystem spread across two disks.
> >
> > Example 2. Now let's say that you bought a NAS device (QNAP, Drobo,
> > Buffalo) that does iSCSI or NFS and you want to move your data off the
> > two local disks. With LVM you just add the new 'disk' into the pool
> > then tell LVM to move existing data off the 'old' disk.
> >
> > Try doing that with parted. :-P
>
> I understand the advantages when using a server, but my personal
> computer is a Small Form Factor Dell GX270 with only one hard drive
> slot. But I'll look closer into LVM options when I install on the
> bigger hard drive. Thanks.
I use LVM on my *laptop* with a 40 gig hard drive... Very convientent,
esp. when I upgraded from CentOS 4.8 to CentOS 5.<mumble>. My laptop
does NOT have any removable media -- that is it is NOT possible to boot
off a live CD to repartition the hard drive, so using something like
parted is not really a useful option. I can do a PXE boot and run the
installer that way. Is is just easier to be able to 'repartition' while
running the live system (eg doing lvcreate, lvresize, etc. as needed).
>
--
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