CODEWITHSUNDEEP
amazon-web-servicesamazon-ec2centoscloudblock-device
Vatsal Thakor
Vatsal Thakor

Reputation: 13

AWS Block Devices name doesn't match with CentOS SoftLink

On AWS EC2 Block Device is identified as /dev/sda, /dev/sdf and /dev/sdg, but inside EC2 CentOS instance when I do ll /dev/sd* it gives following:

lrwxrwxrwx. 1 root root 4 Feb 17 03:10 /dev/sda -> xvde
lrwxrwxrwx. 1 root root 4 Feb 17 03:10 /dev/sdj -> xvdj
lrwxrwxrwx. 1 root root 4 Feb 17 03:10 /dev/sdk -> xvdk
lrwxrwxrwx. 1 root root 5 Feb 17 03:10 /dev/sdk1 -> xvdk1

When I run ec2-describe-instances --aws-access-key xxxxxx<MyKey>xxx --aws-secret-key xxxxxx<MyKey>xxx --region us-east-1 ``curl -s http://169.254.169.254/latest/meta-data/instance-id`` | grep -i BLOCKDEVICE output is as follow:

/dev/sda
/dev/sdf
/dev/sdg

I am wondering how to link these two: AWS GUI Console's Block Devices and within EC2 instance Block Devices?

Thanks,

Upvotes: 1

Views: 413

Answers (1)

user1832464
user1832464

Reputation:

This is a device mapping alias problem. You can see more details with a solution here:

https://forums.aws.amazon.com/message.jspa?messageID=255240

Make sure you take backups of everything before making any changes!

Upvotes: 1

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