[aliguori]

Sorry for that. The timeout behavior on earlier kernels is a bit of a pain.

There's a lot to love about NVMe and timeouts are not actually part of the NVMe specification itself but rather a Linux driver construct. Unfortunately, early versions of the driver used an unsigned char for the timeout value and also have a pretty short timeout for network-based storage.

As mentioned elsewhere in the thread, recent AMIs are configured to avoid this problem out of the box.