How to extend AWS EBS volumes with no downtime
If you need to extend your EBS volume With No Downtime, please follow these simple steps:
- Login to your AWS console
- Choose “EC2” from the services list
- Click on “Volumes” under ELASTIC BLOCK STORE menu.
- Choose the volume that you want to resize, right click on it and click “Modify Volume”
Set the new size for your EBS volume (in this case i have extended an 8GB volume to 50GB)
- Click on modify.
Now, we need to extend the partition itself.
- SSH to the EC2 instance where the EBS volume is attached.
- Type the following command to list our block devices:
[root@awsserver ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
xvda 202:0 0 50G 0 disk
└─xvda1 202:1 0 8G 0 part /
- As you can See root Device is showing 50GB but the partition is showing 8GB. Now Grow the partition.
[root@awsserver ~]# growpart /dev/xvda 1
CHANGED: partition=1 start=2048 old: size=16775168 end=16777216 new: size=104855519,end=104857567
- We have a XFS filesystem so ran , xfs_growfs
[root@awsserver ~]# xfs_growfs /
meta-data=/dev/xvda1 isize=512 agcount=4, agsize=524224 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=2096896, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 2096896 to 13106939
[root@awsserver ~]#
- Now Check the File System Size :
[centos@awsserver ~]$ df -h /
Filesystem Size Used Avail Use% Mounted on
/dev/xvda1 50G 12G 39G 23% /
[centos@awsserver ~]$
You have just extended your EBS volume size.
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