graphic: 0.966
debug: 0.943
virtual: 0.941
device: 0.868
arm: 0.829
semantic: 0.783
architecture: 0.684
VMM: 0.647
ppc: 0.549
vnc: 0.495
network: 0.443
mistranslation: 0.365
PID: 0.357
hypervisor: 0.341
boot: 0.336
performance: 0.333
assembly: 0.329
KVM: 0.309
risc-v: 0.309
permissions: 0.301
socket: 0.287
kernel: 0.264
TCG: 0.258
peripherals: 0.245
user-level: 0.235
register: 0.204
files: 0.182
i386: 0.029
x86: 0.020

using the "scsi-cd" option on arm64 platform
Description of problem:
When using OpenStack to create a virtual machine instance, I need to configure the password of the root user through cloud-init. I use the ConfigDriver method, in which OpenStack will mount a virtual disk in iso9660 format to the virtual machine instance. The command line generated by OpenStack is shown above. You can see that this ConfigDrive virtual disk is mounted via "--device scsi-cd". But when I entered the virtual machine instance and used lsblk, blkid and searched in /dev/disk/by-label, I did not find the virtual disk that should be mounted. In addition, I don't have more debugging messages or error messages. I want to know if the "scsi-cd" is not fully adapted to arm64 platform.