Re: [gentoo-user] grub and what happens exactly when booting.

[Alex Schuster]

Dale writes:

> Neil Bothwick wrote:
> > On Fri, 16 Sep 2011 22:03:20 +0100, Peter Humphrey wrote:

> > A word of advice when starting from scratch, give your VG(s) unique
> > names. I've seen what happens when someone takes a drive from
> > one Fedora system and puts it in another, so there are two VGs called
> > vg01. It ain't nice (only one is seen, usually not the one you want).
> >
> > I prefer to give my VGs names related to the hostname, so it's
> > perfectly clear where they came from and no risk of name collisions
> > if I have to attach the drive to another computer.

I had such a collision once, but I was able to change the name of one
volume group by using vgrename with the UUID that vgdisplay shows. Dale,
unless you know about them already, check out {pv,vg,lv}{scan,display} for
information about your LVM.

> I did name it pretty well.  It is called "test" right now.  lol  Right
> now, I'm just having fun.  The biggest difference so far is that I can
> see with my new glasses.  I just wish I didn't have arthritis in my
> neck and could move my head better.  It's hard to switch between normal
> and the bifocal thingys.
>
> I'm getting this LVM thing down pat tho.

Finally!

> cfdisk to create partitions, if not using the whole drive.

I like to create several partitions, not a single one. And use pvcreate
for every partition then. This way, I can free space later just in case I
somehow need to have a conventional partition for installing Windows or
something. pvmove can transfer stuff from one physical volume to another.

I also used to have two volume groups. One small one for the system at
the start of the drive, where it is supposed to be a little faster, and
another big one for the rest. But I stopped doing so, as I lose a little
flexibility, and the effect is probably negligible, as all stuff is
encrypted here.

	Wonko