Hello Guys,

I have some questions regarding LVM.

I am partitioning my disk and I am planning to use LVM.

I have created 3 partitions of 5GB each (this is just for testing):

/dev/sda1 5G LVM -> swap
/dev/sda2 5G LVM -> home
/dev/sda3 5G LVM -> root

Physical Volume (PV)

# pvcreate /dev/sda1 /dev/sda2 /dev/sda3

Volume Group (VG)

# vgcreate myVirtualGroup /dev/sda1 /dev/sda2 /dev/sda3

Logical Volume (LV)

# lvcreate -n swap -L 5G myVritualGroup
# lvcreate -n home -L 5G myVritualGroup
# lvcreate -n root -L 5G myVirtualGroup

My questions are:

1. Should I create a Volume Group (VG) for each Physical Volume (PV)? or it's recommended to have all PVs in just one VG.
   
2. Is it recommended to use LVM? I guess yes, right?

Any other recommendation will be highly appreciated!

LVM principally offers flexibility - take advantage of it, and don't impose inflexibilities over the top of it. Do as you wish, but don't get into a one-to-one mapping mindset. Use what feels comfortable to your way of working.
LVM is a good option unless you have reasons not to use it.

Putting them all in one VG makes it easier to reshuffle space later if the need arises. It does mean, though, that you need to specify which PV to use when you create each of the LVs. If there were three separate VGs, that would of course be automatic.

Switching to or from multiple VGs can be done later, though not while the LVs are in use.

Indeed: any "distro" that you might use, if you choose to use LVM, will automatically set up a perfectly-acceptable partitioning arrangement and then map those to physical and then logical volumes.