How to Resize a Volume in AWS
03/03/2017
Useful Unix Commands
$ df -h
- gives the disk usage
$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 7.5G 12K 7.5G 1% /dev
tmpfs 1.5G 392K 1.5G 1% /run
/dev/xvda1 7.8G 5.9G 1.6G 80% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
none 5.0M 0 5.0M 0% /run/lock
none 7.5G 0 7.5G 0% /run/shm
none 100M 0 100M 0% /run/user
/dev/xvdc 296G 136G 147G 49% /mnt/mysql
$ sudo file -s /dev/xvd*
- gives information about the available volumes
$ sudo file -s /dev/xvd*
/dev/xvda: x86 boot sector
/dev/xvda1: Linux rev 1.0 ext4 filesystem data, UUID=240ad8b1-c46c-4ed6-b233-02b4d2a7ede3, volume name "cloudimg-rootfs" (needs journal recovery) (extents) (large files) (huge files)
/dev/xvdb: FoxPro FPT, blocks size 0, next free block index 1664118375
/dev/xvdc: Linux rev 1.0 ext4 filesystem data, UUID=72ebf16a-eedc-432a-9364-1e4a9f311aad (needs journal recovery) (extents) (large files) (huge files)
$ sudo resize2fs /dev/xvda1
- expands the given volume xvda1 to take up the newly allocated space (works only on ext4) file system
$ sudo resize2fs /dev/xvdc
resize2fs 1.42.9 (4-Feb-2014)
Filesystem at /dev/xvdc is mounted on /mnt/mysql; on-line resizing required
old_desc_blocks = 19, new_desc_blocks = 69
The filesystem on /dev/xvdc is now 288358400 blocks long.