AWS Elastic Block Storage contd…

• File Systems on Linux:
  • xfs
  • ext4
• Finding the block devices (hard disks) sudo lsblk Refer Here
  
• To create a file system sudo mkfs -t xfs <path of block device>
  
• Create a new folder sudo mkdir /additional
• Mount the disk to folder sudo mount <block device path> /additonal
  
• Lets create some files
  
• Create an ec2 instance with ubuntu os. While creating add a volume of size 1GiB. Find the block device name. Create a filesystem and mount to /additonal and execute sudo df -h
• After this is done. Attach a new voluem of size 1 GiB and mount it to folder /tools and execute sudo df -h
• Restart the ec2 instance and execute sudo df -h
• After restart linux doesn’t remember the mounts
  
• To make this work we need to add entries in a file /etc/fstab
• Lets add entries to /etc/fstab

sudo blkid

* Add the following entries to /etc/fstab

UUID=<uuid-from-blk-id>   /additional   xfs   defaults,nofail   1   2

* Figure out how to bring in the expanded disk size into linux mounts