Dynamic volume expansion of AWS T2 instances

Requirements: the original 30G storage of AWS T2 instance needs to be expanded to 200G.

1. Modify the volume size

Find Volume-> Select corresponding Volume-> Action: modify Volume

Expand from 30G to 200G, the status will be initialized after submission, and it will be successful when the status changes to in-use.

2. Extended partition

Using lsblk to see that the volume size has been expanded to 200G, but the partition size is still 30G.

Use the growpart command to expand the partition. Notice that there is a space between the device name and the partition number

Growpart / dev/xvda 1

3. Extend the file system

# View the file system type, which is XFS type

File-s / dev/xvd*

# install the xfsprogs tool

Yum install-y xfsprogs

# extending the XFS file system

Xfs_growfs-d /

You can see from the df-h command that it has been expanded to 200G.

Reference official website: https://docs.aws.amazon.com/zh_cn/AWSEC2/latest/UserGuide/recognize-expanded-volume-linux.html

Attached:

1. For ext4 file systems, use the following command

Pvresize / dev/xvdf

Lvextend-r-l + 100%FREE / dev/mapper/vg_mysqlbackup

2. If it is a LVM2 file system, use the following command

# expanding logical volumes

Growpart / dev/xvdb 1

# View pv name

Pvs

# expand pv size

Pvresize / dev/sdb1

# View lv name

Df-h

# expand lv size

Lvextend-r-l + 100%FREE / dev/mapper/vg_opt-lv_opt