ec2 metadata block device mapping duplicate entry

[John Garbutt]

The ec2 metadata now seems to have both an ami and root disk entry.

It seems like the work to add the root disk into the block device mapping the the database has caused this duplicate entry.

[John Garbutt (johngarbutt)]

For example, when launching cirros I guest:

"block-device-mapping": {"ami": "xvda", "root": "/dev/xvda"}

[Craig Tracey (craigtracey)]

Hey John,

I have launched EBS-backed instances in EC2 and they have both "root" and "ami." The only discrepancy here is that on EC2 they both use the device path (in my case '/dev/sda1').

How are you querying this data, and are you perhaps comparing different API versions?

Craig

[Sean Dague (sdague)]

old bug