Tested this patch, with and without the below fix, and observing 
expected results.

https://lore.kernel.org/all/20240613164246.75205-1-kbusch@meta.com/ (local)

Tested-by: Venkat Rao Bagalkote <redacted>

Regards,
Venkat.
On 20/06/24 12:10 pm, Nilay Shroff wrote:

On 6/20/24 12:05, Daniel Wagner wrote:

quoted

On Wed, Jun 19, 2024 at 10:55:02PM GMT, Nilay Shroff wrote:

quoted

+		truncate -s "${NVME_IMG_SIZE}" "$(_nvme_def_file_path).$i"
+		uuid="$(uuidgen -r)"

This adds a new dependency on an external tool. It should be mentioned
in the README and added to the list of tools to check for:
_check_dependencies(). Alternatively you could skip the test if the tool
is not available. Anyway the rest looks good.

The "uuidgen" is part of util-linux package and I saw that it's already mentioned
as one of the required packages for blktest: https://github.com/osandov/blktests

quoted

Reviewed-by: Daniel Wagner <redacted>

Thanks,
--Nilay