VMs: Not showing full drive space?

[oguruma]

I have a 20G Ubuntu VM that I have set up with LVM. Storage is from a ZFS Pool.

My virtualmin dashboard that I installed on that VM is telling me I have used 4GB of 4.82GB drive space.


Where did the other 16G of space go?

 

[Stefan_R]

What's your LVM layout inside the VM (lvs -a)? Potentially the installer only reserved what's necessary from the available disk space on the root LVM volume.

 

[oguruma]

What's your LVM layout inside the VM (lvs -a)? Potentially the installer only reserved what's necessary from the available disk space on the root LVM volume.

LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
ubuntu-lv ubuntu-vg -wi-ao---- 4.00g

fdisk -l shows

Disk /dev/loop0: 89.1 MiB, 93417472 bytes, 182456 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop1: 93.9 MiB, 98484224 bytes, 192352 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sda: 20 GiB, 21474836480 bytes, 41943040 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 6D6D35B1-F58F-4817-8E36-ADA8D209D7E8

Device       Start      End  Sectors Size Type
/dev/sda1  2048 4095 2048 1M BIOS boot
/dev/sda2     4096  2101247  2097152   1G Linux filesystem
/dev/sda3  2101248 41940991 39839744  19G Linux filesystem


Disk /dev/mapper/ubuntu--vg-ubuntu--lv: 4 GiB, 4294967296 bytes, 8388608 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
jrangel@rangelnet:~$

 

[Stefan_R]

As you can see your LV for root is only 4G in size. You should be able to expand it using 'lvextend' and 'resize2fs'. See here for example.