Amazon web services – How to connect a root EBS volume of one instance to other instance without losing the data?

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If I were to mount the root EBS volume from server 1 to server 2 without losing data, I’ll follow these steps:

1. Stop Server 1:

   aws ec2 stop-instances --instance-ids i-1234567890abcdef0
   

2. Detach the Root EBS Volume from Server 1:

   aws ec2 detach-volume --volume-id vol-1234567890abcdef0
   

3. Attach the EBS Volume to Server 2:

   aws ec2 attach-volume --volume-id vol-1234567890abcdef0 --instance-id i-0987654321fedcba0 --device /dev/xvdf
   

4. Identify the Attached Volume on Server 2:
   Log in to Server 2 and list the block devices to confirm the attached volume:

   lsblk
   

5. Create a Mount Point:
   Create a directory to serve as the mount point if it doesn’t already exist:

   mkdir -p /home/ec2-user/storage
   

6. Mount the Volume:
   Mount the volume to the created directory:

   sudo mount /dev/xvdf1 /home/ec2-user/storage
   

   Note: Sometimes the device might appear as /dev/xvdf1 instead of /dev/xvdf. Verify the exact device name using lsblk.

7. Verify the Mount:
   Check if the volume is mounted correctly:

   df -h
   

Make sure that the device name is correct (/dev/xvdf or /dev/xvdf1). Use lsblk to find the exact device name.

If the file system is not recognized, you may need to run a file system check:

sudo fsck /dev/xvdf1

By following these steps, you should be able to successfully mount the root EBS volume of Server 1 to Server 2 without losing any data.