AWS Add new disk volume

The procedure of add new 1 GB disk volume for AWS EC2.

Procudure:

a.) Login to AWS console and, modify ec2 disk volume.

b) Access EC2 by ssh

c.) Check the partition block and file system

d.) expand the partition block

e.) expand the file system

0. Check the petition size.

# df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        482M     0  482M   0% /dev
tmpfs           492M     0  492M   0% /dev/shm
tmpfs           492M  560K  492M   1% /run
tmpfs           492M     0  492M   0% /sys/fs/cgroup
/dev/xvda1      8.0G  7.3G  775M  91% /
tmpfs            99M     0   99M   0% /run/user/0
tmpfs            99M     0   99M   0% /run/user/1000

1. Login to AWS console and select "volume"

2. Select exit volume and select “Modify Volume”

3. Change Size and push “Modify” buton

4. Read the message and push “Yes”.

5. Close the box.

6. Check the disk volume again. but the disk volume had not been expanded.

# df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        482M     0  482M   0% /dev
tmpfs           492M     0  492M   0% /dev/shm
tmpfs           492M  504K  492M   1% /run
tmpfs           492M     0  492M   0% /sys/fs/cgroup
/dev/xvda1      8.0G  7.3G  775M  91% /
tmpfs            99M     0   99M   0% /run/user/1000

7. Check the file system. mail partition /dev/xvda1 file system is ‘xfs’.

# df -hT
Filesystem     Type      Size  Used Avail Use% Mounted on
devtmpfs       devtmpfs  482M     0  482M   0% /dev
tmpfs          tmpfs     492M     0  492M   0% /dev/shm
tmpfs          tmpfs     492M  504K  492M   1% /run
tmpfs          tmpfs     492M     0  492M   0% /sys/fs/cgroup
/dev/xvda1     xfs       8.0G  7.3G  775M  91% /
tmpfs          tmpfs      99M     0   99M   0% /run/user/1000

8. List block device and expand volume

# lsblk
NAME    MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
xvda    202:0    0   9G  0 disk
mqxvda1 202:1    0   8G  0 part /

# growpart /dev/xvda 1
CHANGED: partition=1 start=4096 old: size=16773087 end=16777183 new: size=18870239 end=18874335

9. Check the volume of the block

# lsblk
NAME    MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
xvda    202:0    0   9G  0 disk
mqxvda1 202:1    0   9G  0 part 

10. Check the file system

Check by df command and it found the partition /dev/xvda1 file system is ‘xfs’.

# df -hT
Filesystem     Type      Size  Used Avail Use% Mounted on
devtmpfs       devtmpfs  482M     0  482M   0% /dev
tmpfs          tmpfs     492M     0  492M   0% /dev/shm
tmpfs          tmpfs     492M  504K  492M   1% /run
tmpfs          tmpfs     492M     0  492M   0% /sys/fs/cgroup
/dev/xvda1     xfs       8.0G  7.3G  775M  91% /
tmpfs          tmpfs      99M     0   99M   0% /run/user/1000

11. expand xfs file system

# xfs_growfs -d /
meta-data=/dev/xvda1             isize=512    agcount=4, agsize=524159 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1 spinodes=0
data     =                       bsize=4096   blocks=2096635, 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 2096635 to 2358779

* if file system is ext4, please use resize2fs command. 

The /dev/xvda1 size is expanded to 9.0GB

# df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        482M     0  482M   0% /dev
tmpfs           492M     0  492M   0% /dev/shm
tmpfs           492M  512K  492M   1% /run
tmpfs           492M     0  492M   0% /sys/fs/cgroup
/dev/xvda1      9.0G  7.3G  1.8G  81% /
tmpfs            99M     0   99M   0% /run/user/1000