After expanding the disk space in the control panel, you need to expand it at the operating system level.
Open a terminal as root and type the following commands:
Check the disk information
Using the section and disk utility parted, get information about the sections:
(parted) p
Model: VMware Virtual disk (scsi)
Disk /dev/sda: %size%GB
Memorize disk size %size%GB.
Resize the section using the resizepart command of the parted utility, specifying the section number %partnum%
As "End" value we use %size% value from the (parted) p output, which you memorized earlier.
Finish the work of the utility parted with the command:
After that we will get information about the need to make changes in the fstab:
Now we will use the fdisk section utility:
After receiving the list of sections with the -l parameter, select the section we need (in our example /dev/sda)
root@Serverspace:~# fdisk /dev/sda
Create a section- section type (L) - logical
Select (default p): l
Adding logical partition %lpart%
Memorize the section number you created during the command (in the example it will be %lpart%).
Accept the value by default - press Enter twice:
Last sector, +sectors or +size{K,M,G} (XXX-YYY, default ZZZ):
Change the section type, write the number of the section you memorized earlier (in the example it was %lpart%).
Partition number (1-X): %lpart%
Hex code (type L to list codes): 8e Command (m for help): w
nform the kernel about the changes:
In the response you’ll see a line. /dev/sda: partition %lpart% added
Initialize the section, instead of %lpart% we again use the section number that we memorized earlier.
Physical volume "/dev/sda%lpart" successfully created
Add a physical section to an existing volume group:
Volume group "ubuntu-vg" successfully extended
Expand the logical volume with lvextend.
Extending logical volume root to YY.ZZ GiB
Logical volume root successfully resized
Expand the file system. with the utility resize2fs.