Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I created an EBS volume and attached it to a CentOS instance on /dev/sdf.
From within the instance, I see it appear as /dev/sdj.

Any explanations for this?

share|improve this question
add comment

1 Answer

up vote 2 down vote accepted

The kernel will map the device you specify depending on the drivers installed in order to avoid namespace clashes. For example most of the Ubuntu kernels I have used map /dev/sdf to /dev/xvdf.

According to this post what you are seeing is likely an artifact from a RHEL6.1 kernel change, where they intentionally remap xen drives as X+4.

share|improve this answer
    
Alright then, not a bug, but a feature. –  Laizer Jul 18 '13 at 17:39
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.