Re: creating LVM partitions

[Rick Stevens <ricks nerd com>]

Waldher, Travis R wrote:
> > -----Original Message-----
> > From: redhat-install-list-bounces redhat com [mailto:redhat-install-
> > list-bounces redhat com] On Behalf Of Rick Stevens
> > Sent: Tuesday, June 09, 2009 9:58 AM
> > To: Getting started with Red Hat Linux
> > Subject: Re: creating LVM partitions
> >
> > Thomas vonSteiger swisscom com wrote:
> > >  Have a look here:
> > >
> > > http://www.redhat.com/docs/en-
> > US/Red_Hat_Enterprise_Linux/5/html/Installation_Guide/s1-
> > diskpartitioning-x86.html
> > > After create lvm partition you need to goto lvm and create vg and
> > lv's.
> >
> > One might add that once you create the VG (volume group), you'll create
> > LVs (logical volumes) inside that volume group.  You can think of LVs
> > as
> > the LVM equivalents of partitions.
> >
> > To be honest, I really don't see a huge benefit of using multiple LVs
> > except for backup purposes.  When you use LVM, you can always expand
> > the
> > volume group by adding a new PV (physical volume or disk) to the group
> > and then expanding the LV onto that new PV.  However, it's your system,
> > do what you will.
> > ----------------------------------------------------------------------
> > - Rick Stevens, Systems Engineer                      ricks nerd com -
> > - AIM/Skype: therps2        ICQ: 22643734            Yahoo: origrps2 -
> > -                                                                    -
> > -         "If you can't fix it...duct tape it!"  -- Tim Allen        -
> > ----------------------------------------------------------------------
>
> I create multiple LVs, such as:
>
> /var
> /var/adm
> /tmp
> /usr
> /
> /home
>
> The first three is so that a user or log can't fill up /.

That's valid, although it's fairly far fetched unless you have
something very misbehaved.

> /usr so that you can't accidentally fill up / installing something.

A good point, but again a fairly rare occurance.

> /home so that a user can't accidentally fill up /; this is the most likely to need to grow as well.

In the days of time-shared, multiuser systems or large servers, yes.
I find quotas to be far more effective in the server world.

> /boot should never be an LVM because it will complicate matters getting access to it in the event your system won't boot.

/boot CAN'T be an LV as grub doesn't speak LVM.  And with Fedora 11 and
the new ext4, /boot has to be a single partition on a single disk (or
RAID1) and use ext2 or ext3 filesystems.
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- Rick Stevens, Systems Engineer                      ricks nerd com -
- AIM/Skype: therps2        ICQ: 22643734            Yahoo: origrps2 -
-                                                                    -
- Life:  That which happens while you search for the remote control. -
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