I would like to move to t3 instances from t2 instances on ec2 but my chef deployment script fails on t3 instances but works on t2 instances running under either ubuntu 16.04 or 18.04.
I can create and attach an ec2 volume successfully but creating the filesystem fails with: mkfs -t ext4 /dev/sdf
saying: The file /dev/sdf does not exist and no size was specified.
I can verify in the web console that the volume is created and attached to the instance and available as /dev/sdf.
Is there a change with t3 instances that I need to be aware of?