In Ubuntu 16.04, increasing disk space

After you increase the disk in the control panel, you need to expand at the operating system level.

Open a terminal (see connection instructions ) as root and enter the following commands:
root@Ubuntu16x64:~# echo 1 > /sys/block/sda/device/rescan

Run the parted utility:
root@Ubuntu16x64:~# partedNext, execute the commands in the interface of the parted utility: Remember the disk size ZZ.ZGB. The value “End” – enter the new disk size in gigabytes – the value from the output of (parted) p, which we remembered earlier. Exit parted: The following information will be displayed:
(parted) p
Model: Virtual disk (scsi)
Disk //sda: ZZ.ZGB
...

(parted) resizepart 2
End? [YY.YGB]? ZZ.ZGB
(parted) quit

Information: You may need to update /etc/fstab.

Run fdisk:
root@Ubuntu16x64:~# fdisk /dev/sdaNext, run the commands in the fdisk utility interface.
Create a partition:
Command ( for help): nSelect the partition type – logical. (L)
Select (default p): l

Adding logical partition X

Take note of the partition number created during the execution of the command (marked as X in the example).
We accept the default values ​​- press Enter twice: Change the partition type, while specifying the partition number that we remembered earlier (in the example it is designated as X).
First sector (XXX-YYY, default ZZZ):
Last sector, +sectors or +size{K,M,G} (XXX-YYY, default ZZZ):

Command (m for help): t
Partition number (1-X): X
Hex (type L to list codes): 8e
...
Command (m for help): w

We inform the kernel about the changes:root@Ubuntu16x64:~# partx -v -a /dev/sdaIn the displayed response, we see the line.

...
/dev/sda: partition #X added
...

We initialize the section, instead of X we again use the section number that we remembered earlier.root@Ubuntu16x64:~# pvcreate /dev/sdaX

Physical volume "/dev/sdaX" successfully created

Add a physical partition to an existing volume group:root@Ubuntu16x64:~# vgextend -vg /dev/sdaX

Volume group "ubuntu-vg" successfully extended

Expanding the logical volume.root@Ubuntu16x64:~# lvextend -l +100%FREE //dev/ubuntu-vg/root

Extending logical volume root to YY.ZZ GiB
Logical volume root successfully resized

Expanding the file system.root@Ubuntu16x64:~# resize2fs /dev/ubuntu-vg/root

Done.

 

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