After you increase the size of an EBS volume, you must use file system–specific commands to extend the file system to the larger size. You can resize the file system as soon as the volume enters the
Important: Remember to backup! It is best to create a snapshot before attempting and file system operations.
Identifying the File System for a Volume
The following example shows a T2 instance that has a boot volume with an ext4 file system and an additional volume with an XFS file system.
sudo file -s /dev/xvd*
/dev/xvda: DOS/MBR boot sector .. /dev/xvda1: Linux rev 1.0 ext4 filesystem data ... /dev/xvdf: SGI XFS filesystem data ...
Extending a Partition
To extend the partition on the root volume, use the following growpart command. Notice that there is a space between the device name and the partition number.
sudo growpart /dev/nvme0n1 1
You can verify that the partition reflects the increased volume size by using the lsblk command again.
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT nvme1n1 259:0 0 30G 0 disk /data nvme0n1 259:1 0 16G 0 disk └─nvme0n1p1 259:2 0 16G 0 part / └─nvme0n1p128 259:3 0 1M 0 part