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Thanks a lot for @Bratchley answer and the comments. It helped me :)

My environment: Ubuntu 18.04 in VirtualBox 6.1

My case: I created 10GB fixed VDI disk and increased to 30GB dynamic using VirtualBox GUI. But still the increased space is not available to filesystem. Then came across @Bratchley answer.

Steps I ran:

1. Run below command to get PV (Physical Volume) name (Ex: /dev/sda1)

sudo pvs

2. Resize the PV

sudo pvresize <PV name from above step>   # Ex: sudo pvresize /dev/sda1

3. Run below command to get root logical volume name (Filesystem value of / row; ex: /dev/mapper/ubuntu--vg-root)

df -h

4. Expand logical volume:

sudo lvextend -r -l +100%FREE <root logical volume name from above step>   # Ex: sudo lvextend -r -l +100%FREE /dev/mapper/ubuntu--vg-root

Thanks a lot for @Bratchley answer and the comments. It helped me :)

My environment: Ubuntu 18.04 in VirtualBox 6.1

My case: I created 10GB fixed VDI disk and increased to 30GB dynamic using VirtualBox GUI. But still the increased space is not available to filesystem. Then came across @Bratchley answer.

Steps I ran:

1. Run below command to get PV (Physical Volume) name (Ex: /dev/sda1)

sudo pvs

2. Resize the PV (Ex: sudo pvresize /dev/sda1)

sudo pvresize <PV name from above step>   

3. Run below command to get root logical volume name (Filesystem value of / row; ex: /dev/mapper/ubuntu--vg-root)

df -h

4. Expand logical volume (ex : sudo lvextend -r -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv):

sudo lvextend -r -l +100%FREE <root logical volume name from above step>   

Thanks a lot for @Bratchley answer and the comments. It helped me :)

My environment: Ubuntu 18.04 in VirtualBox 6.1

My case: I created 10GB fixed VDI disk and increased to 30GB dynamic using VirtualBox GUI. But still the increased space is not available to filesystem. Then came across @Bratchley answer.

Steps I ran:

1. Run below command to get PV (Physical Volume) name (Ex: /dev/sda1)

sudo pvs

2. Resize the PV

sudo pvresize /dev/sda1

3. Run below command to get root logical volume name (Filesystem value of / row; ex: /dev/mapper/ubuntu--vg-root)

df -h

4. Expand logical volume:

sudo lvextend -r -l +100%FREE /dev/mapper/ubuntu--vg-root

Thanks a lot for @Bratchley answer and the comments. It helped me :)

My environment: Ubuntu 18.04 in VirtualBox 6.1

My case: I created 10GB fixed VDI disk and increased to 30GB dynamic using VirtualBox GUI. But still the increased space is not available to filesystem. Then came across @Bratchley answer.

Steps I ran:

1. Run below command to get PV (Physical Volume) name (Ex: /dev/sda1)

sudo pvs

2. Resize the PV

sudo pvresize <PV name from above step>   # Ex: sudo pvresize /dev/sda1

3. Run below command to get root logical volume name (Filesystem value of / row; ex: /dev/mapper/ubuntu--vg-root)

df -h

4. Expand logical volume:

sudo lvextend -r -l +100%FREE <root logical volume name from above step>   # Ex: sudo lvextend -r -l +100%FREE /dev/mapper/ubuntu--vg-root