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SuicideSheep
SuicideSheep

Reputation: 5550

How to identify what is the device name or block name?

enter image description here

I've created an EC2 instance having 2 volumes attached to it, /dev/xvda is for the root volume and dev\sdb is for another magnetic volume which added.

Now when I SSH into the instance and try lsblk I couldn't find the one with dev/sdbenter image description here

since lsblk only returning me 2 blocks which are xvda and xvdb, I can safely assumed that dev/sdb was referring to xvdb but really what is their relation? Sorry I have very minimal linux/unix background and hence this question

Upvotes: 1

Views: 3657

Answers (1)

Céline Aussourd
Céline Aussourd

Reputation: 10654

AWS used to call the volumes /dev/sdb but now they are automatically called /dev/xvdb even if you attach them with the /dev/sdb name.

Depending on the block device driver of the kernel, the device could be attached with a different name than you specified. For example, if you specify a device name of /dev/sdh, your device could be renamed /dev/xvdh or /dev/hdh https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/device_naming.html

Upvotes: 6

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