{"id":3556,"date":"2021-10-12T11:10:30","date_gmt":"2021-10-12T11:10:30","guid":{"rendered":"https:\/\/www.deftboxsolutions.com\/blog\/?p=3556"},"modified":"2021-11-08T12:38:18","modified_gmt":"2021-11-08T12:38:18","slug":"how-to-reduce-externally-attached-ebs-volume-size","status":"publish","type":"post","link":"https:\/\/www.deftboxsolutions.com\/blog\/how-to-reduce-externally-attached-ebs-volume-size\/","title":{"rendered":"How to reduce EBS volume size in AWS"},"content":{"rendered":"

Sometimes we attach large volumes while launching AWS EC2 instance, later to realise only that we don’t need large size and need to decrease it.<\/p>\n

There’s no option in AWS console to perform the same but with a small trick we can achieve the same.<\/p>\n

In this article, we’ll see detailed steps to do that. The task follow below steps.<\/p>\n

    \n
  1. Take snapshot the current volume (let’s say it’s 9 GB for this article)<\/li>\n
  2. Create a new smaller EBS volume (let’s say it’s 7 GB for this article)<\/li>\n
  3. Attach the new (smaller) volume<\/li>\n
  4. Mount the new (smaller) volume<\/li>\n
  5. Copy data from old (larger) volume to the new (smaller) volume<\/li>\n
  6. Detach and unmount old (larger) volume<\/li>\n<\/ol>\n

     <\/p>\n

    In below screen, we can see that we already have volume attached to instance and size is 9 GB.<\/p>\n

    \"\"<\/p>\n

    You can see that volume is mounted in a server under \/mnt\/Big_Volume and have some dummy files in it also.<\/p>\n

    \"\"<\/p>\n

    \"\"<\/p>\n

    Showing fstab entry for this volume.<\/p>\n

    \"\"<\/p>\n

    NOW WE WANT TO REDUCE THE SIZE FROM 9 GB TO 7 GB<\/strong>.<\/p>\n

    Create another volume of 7 GB and attach it to the instance. It’s needless to say that you have to create another volume in the same region.<\/p>\n

    \"\"<\/p>\n

    Attach this volume to an already running instance.<\/p>\n

    \"\"<\/p>\n

    Now login into the instance and execute below command :<\/p>\n