SSD size vs. what I see allocated

[AndyRed]

Greetings Team:

I'm confused. I have a ~1TB SSD and am struggling to see how I can use the entire SSD here.

root@pve1:~# df -h
Filesystem            Size  Used Avail Use% Mounted on
udev                   16G     0   16G   0% /dev
tmpfs                 3.2G  1.6M  3.2G   1% /run
/dev/mapper/pve-root   94G   27G   63G  30% /
tmpfs                  16G   76M   16G   1% /dev/shm
tmpfs                 5.0M     0  5.0M   0% /run/lock
/dev/sdb2             511M  328K  511M   1% /boot/efi
/dev/sdc1             229G   51G  166G  24% /mnt/backup
/dev/sda1             220G  2.3G  206G   2% /mnt/data
/dev/fuse             128M   32K  128M   1% /etc/pve
tmpfs                 3.2G     0  3.2G   0% /run/user/0
root@pve1:~# lsblk
NAME                         MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                            8:0    0 223.6G  0 disk
└─sda1                         8:1    0 223.6G  0 part /mnt/data
sdb                            8:16   0 931.5G  0 disk
├─sdb1                         8:17   0  1007K  0 part
├─sdb2                         8:18   0   512M  0 part /boot/efi
└─sdb3                         8:19   0   931G  0 part
  ├─pve-swap                 253:0    0     8G  0 lvm  [SWAP]
  ├─pve-root                 253:1    0    96G  0 lvm  /
  ├─pve-data_tmeta           253:2    0   8.1G  0 lvm
  │ └─pve-data-tpool         253:4    0 794.8G  0 lvm
  │   ├─pve-data             253:5    0 794.8G  1 lvm
  │   ├─pve-vm--100--disk--0 253:6    0    32G  0 lvm
  │   ├─pve-vm--105--disk--0 253:7    0    32G  0 lvm
  │   ├─pve-vm--106--disk--1 253:8    0    16G  0 lvm
  │   ├─pve-vm--112--disk--0 253:9    0    52G  0 lvm
  │   ├─pve-vm--113--disk--0 253:10   0    16G  0 lvm
  │   ├─pve-vm--114--disk--0 253:11   0    27G  0 lvm
  │   ├─pve-vm--114--disk--1 253:12   0   100G  0 lvm
  │   ├─pve-vm--125--disk--0 253:13   0     8G  0 lvm
  │   └─pve-vm--102--disk--0 253:14   0   200G  0 lvm
  └─pve-data_tdata           253:3    0 794.8G  0 lvm
    └─pve-data-tpool         253:4    0 794.8G  0 lvm
      ├─pve-data             253:5    0 794.8G  1 lvm
      ├─pve-vm--100--disk--0 253:6    0    32G  0 lvm
      ├─pve-vm--105--disk--0 253:7    0    32G  0 lvm
      ├─pve-vm--106--disk--1 253:8    0    16G  0 lvm
      ├─pve-vm--112--disk--0 253:9    0    52G  0 lvm
      ├─pve-vm--113--disk--0 253:10   0    16G  0 lvm
      ├─pve-vm--114--disk--0 253:11   0    27G  0 lvm
      ├─pve-vm--114--disk--1 253:12   0   100G  0 lvm
      ├─pve-vm--125--disk--0 253:13   0     8G  0 lvm
      └─pve-vm--102--disk--0 253:14   0   200G  0 lvm
sdc                            8:32   0 232.9G  0 disk
└─sdc1                         8:33   0 232.9G  0 part /mnt/backup
sr0                           11:0    1  1024M  0 rom

So I see the following:
/dev/mapper/pve-root 94G 27G 63G 30% /

Well, why is it only 94G? I have other drives installed (sdb2, sdc1, sda1). Apologies for my ignorance here.

Andy

 

[Dunuin]

Because your LV used for root filesystem is only 100 GB. 800 GB is your LVM-thin and can only be used by VMs/LXCs.

 

[AndyRed]

Because your LV used for root filesystem is only 100 GB. 800 GB is your LVM-thin and can only be used by VMs/LXCs.

Really appreciate the reply. Is LV then always a percentage of the drive size, or how is it determined?

 

[Dunuin]

Really appreciate the reply. Is LV then always a percentage of the drive size, or how is it determined?

Look here for the "Advanced LVM Configuration Options" paragraph.

 

[AndyRed]

Look here for the "Advanced LVM Configuration Options" paragraph.

Fab. Thanks much.