[SOLVED] I don't understand my disk system

2aprepper · 09-05-2022, 05:36 PM

I have a 1T drive installed in my Ubuntu 20.04.1 LTS box and I can't seem to access the majority of it.

lsblk /dev/sda shows the following:

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 931.5G 0 disk
├─sda1 8:1 0 512M 0 part /boot/efi
├─sda2 8:2 0 1G 0 part /boot
└─sda3 8:3 0 930G 0 part
└─ubuntu--vg-ubuntu--lv 253:0 0 200G 0 lvm /

sda3 shows 930G in addition to the 200G logical volume that is partitioned from it. In KDE file manager the remainder of the 930G (730G?)doesn't show up at all. What am I missing?

TIA

dave67 · 09-05-2022, 06:11 PM

To access an hdd drive in linux you need have root access. But for the where your data is stored in home directory. How where theses partitions created?

2aprepper · 09-05-2022, 06:22 PM

Quote:

Originally Posted by dave67

To access an hdd drive in linux you need have root access. But for the where your data is stored in home directory. How where theses partitions created?

They were created when I installed the OS. I have access to the 200G partition.

Timothy Miller · 09-05-2022, 06:50 PM

I'd guess the entirety of sda3 was added to the VG that the LVM was created from. You can either add more of it to the existing LVM, create another LV if you need it for something else, or however you want. But you'll probably need to do it through LVM.

syg00 · 09-05-2022, 06:55 PM

What you are missing (to understand) is LVM. It is a container system that allows, amongst other things, simple resizing and movement of space between lvs - and thus the filesystems. Much simpler than "real" physical partitions.

FSVO "simple".

Plenty of guides online - Redhat have a very good guide, but it is somewhat deep and may be too much for an intro. I don't use Dolphin, so can't help there.

computersavvy · 09-05-2022, 07:00 PM

It seems you created an LVM VG and the LV for / is 200G in size.
vgscan or vgdisplay should show the full size of that VG with the used and available space. You could expand the / LV, create a new LV to use, or almost anything else with the remaining 700+ GB of space on that drive.

To understand management of the LVM tools you might try https://opensource.com/business/16/9...sers-guide-lvm

2aprepper · 09-05-2022, 07:02 PM

I will study up on LVM. Thanks to you guys for your assistance.

dave67 · 09-05-2022, 07:49 PM

Hmm I hardly ever use LVM BUT I think I will read that opensource introduction.

dave67 · 09-08-2022, 02:06 AM

I think you need think on why you would need LVM on a new home build compared to a web server.

I have used the standard partitions on linux box I built. Though I installed M.2 drive.