On Wed, May 26, 2021 at 05:38:02PM +0800, 韩笑 wrote: > I ran the script on a amzn2-ami-hvm-2.0.20210427.0-x86_64-gp2 instance. Just > like what you have described, the result ... That's the AMI. What is the flavor? Anyway "HVM" seems to indicate a Xen guest so maybe this is one of Amazon's old Xen instances, in which case the output is correct. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-builder quickly builds VMs from scratch http://libguestfs.org/virt-builder.1.html