When you boot an Amazon Linux EC2 instance it boots with a 8GB EBS volume. If you need more space you need to add additional drives. For this you need to use EBS volumes.
Before you start the process please have look at the current partition blocks loaded in your server. You can do so using the contents of partition file.
bash-4.1# cat /proc/partitions major minor #blocks name 202 1 8388608 xvda1
Now you goto EBS volume manager in AWS console and create a new volume, make sure the zone is the same in which your EC2 instance is running.
Once the volume is created you need to attach this to an instance. You can right click on the created volume and say attach. Select the instance then device will populate automatically, you can either leave it or change if you need specific device name.
Now check the partition file again. You can see a new device being added.
bash-4.1# cat /proc/partitions major minor #blocks name 202 1 8388608 xvda1 202 128 26214400 xvdi
The volume attached is not ready for use. It is like a new hard disk. You need to partition and format the same. In our case I am going to use the full disk as one partition. So I am going to skip the fdisk setup and jumping right into formatting the volume.
bash-4.1# mkfs.ext3 /dev/xvdi mke2fs 1.41.12 (17-May-2010) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 1638400 inodes, 6553600 blocks 327680 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 200 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000 Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 21 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override.
The format process can take few seconds just be patient. The drive is ready to use, and to do the same we need mount it.
bash-4.1# mkdir /media/newdrive bash-4.1# mount /dev/xvdi /media/newdrive/ bash-4.1# cd /media/newdrive/ bash-4.1# ls lost+found bash-4.1# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/xvda1 8256952 1298868 6874200 16% / tmpfs 3826296 0 3826296 0% /dev/shm /dev/xvdi 25803068 176196 24316152 1% /media/newdrive
If you wish this device to mount automatically when you reboot the server make sure you add this to your fstab file.
/dev/xvdi /media/newdrive/ ext3 noatime,nodiratime 0 0
When I started which Amazon Cloud, I found these things in a hard way, hope this can help someone 🙂