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#!/usr/bin/python3
# SPDX-License-Identifier: LGPL-2.1-or-later

import json
import os
import subprocess
import sys


config = json.load(sys.stdin)

qemu = f"qemu-system-{os.environ['QEMU_ARCHITECTURE']}"
result = subprocess.run([qemu, "-device", "help"], check=True, text=True, stdout=subprocess.PIPE)
if 'name "virtio-scsi-pci"' not in result.stdout:
    print("virtio-scsi-pci device driver is not available, skipping test...", file=sys.stderr)
    exit(77)

num_disk = 16

config["QemuArgs"] += ["-device", "virtio-scsi-pci,id=scsi0,num_queues=4"]

for i in range(0, num_disk):
    id = f"drive{i}"
    config["QemuDrives"] += [
        {
            "Id": id,
            "Size": "40M",
            "Options": "cache=unsafe"
        }
    ]
    config["QemuArgs"] += ["-device", f"scsi-hd,drive={id},bus=scsi0.0,channel=0,scsi-id=0,lun={i}"]

json.dump(config, sys.stdout)