EC2 EBS ボリューム拡張

手順メモ

EC2に接続されてるボリュームをAWS管理画面上から拡張

管理画面で実行
今回は8GB -> 30GB に拡張

現状をdf

# df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        992M   56K  992M   1% /dev
tmpfs          1001M     0 1001M   0% /dev/shm
/dev/xvda1      7.8G  7.5G  173M  98% /

lsblk で確認

# lsblk
NAME    MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
xvda    202:0    0  30G  0 disk
└─xvda1 202:1    0   8G  0 part /

growpart実行

growpart - extend a partition in a partition table to fill available space

growpart manページ

# growpart /dev/xvda 1
# growpart /dev/xvda 1
CHANGED: disk=/dev/xvda partition=1: start=4096 old: size=16773086,end=16777182 new: size=62910430,end=62914526

resize2fs で拡張実行

# resize2fs /dev/xvda1
resize2fs 1.42.12 (29-Aug-2014)
Filesystem at /dev/xvda1 is mounted on /; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 2
The filesystem on /dev/xvda1 is now 7863803 (4k) blocks long.

dfで確認

# df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        992M   56K  992M   1% /dev
tmpfs          1001M     0 1001M   0% /dev/shm
/dev/xvda1       30G  7.5G   22G  26% /

完了