test/TEST-64-UDEV-STORAGE/nvme_subsystem.configure

   1 #!/usr/bin/python3
   2 # SPDX-License-Identifier: LGPL-2.1-or-later
   3
   4 import json
   5 import os
   6 import shutil
   7 import subprocess
   8 import sys
   9
  10
  11 config = json.load(sys.stdin)
  12
  13 qemu = shutil.which("/usr/libexec/qemu-kvm") or f"qemu-system-{os.environ['QEMU_ARCHITECTURE']}"
  14 result = subprocess.run([qemu, "-device", "help"], check=True, text=True, stdout=subprocess.PIPE)
  15 if 'name "nvme"' not in result.stdout:
  16     print("nvme device driver is not available, skipping test...", file=sys.stderr)
  17     exit(77)
  18
  19 for id in ("nvme0", "nvme1"):
  20     config["Drives"] += [
  21         {
  22             "Id": id,
  23             "Size": "1M",
  24             "Options": "cache=unsafe",
  25         }
  26
  27     ]
  28
  29 config["QemuArgs"] += [
  30     # Create an NVM Subsystem Device
  31     "-device", "nvme-subsys,id=nvme-subsys-64,nqn=subsys64",
  32     # Attach two NVM controllers to it
  33     "-device", "nvme,subsys=nvme-subsys-64,serial=deadbeef",
  34     "-device", "nvme,subsys=nvme-subsys-64,serial=deadbeef",
  35     # And create two shared namespaces attached to both controllers
  36     "-device", "nvme-ns,drive=nvme0,nsid=16,shared=on",
  37     "-device", "nvme-ns,drive=nvme1,nsid=17,shared=on",
  38 ]
  39
  40 json.dump(config, sys.stdout)