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https://github.com/GNS3/gns3-server
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QEMU config disk - initial implementation. Ref #2958
(cherry picked from commit b69965791d)
This commit is contained in:
Bernhard Ehlers
parent
87ede50827
commit
6a1eef0627
@ -38,6 +38,7 @@ from gns3server.utils.asyncio import subprocess_check_output, cancellable_wait_r
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from .qemu_error import QemuError
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from .utils.qcow2 import Qcow2, Qcow2Error
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from ..adapters.ethernet_adapter import EthernetAdapter
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from ..error import NodeError, ImageMissingError
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from ..nios.nio_udp import NIOUDP
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from ..nios.nio_tap import NIOTAP
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from ..base_node import BaseNode
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@ -125,6 +126,22 @@ class QemuVM(BaseNode):
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self.mac_address = "" # this will generate a MAC address
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self.adapters = 1 # creates 1 adapter by default
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# config disk
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self.config_disk_name = "config.img"
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if not shutil.which("mcopy"):
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log.warning("Config disk: 'mtools' are not installed.")
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self.config_disk_name = ""
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self.config_disk_image = ""
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else:
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try:
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self.config_disk_image = self.manager.get_abs_image_path(
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self.config_disk_name, self.project.path)
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except (NodeError, ImageMissingError) as e:
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log.warning("Config disk: {}".format(e))
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self.config_disk_name = ""
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self.config_disk_image = ""
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log.info('QEMU VM "{name}" [{id}] has been created'.format(name=self._name, id=self._id))
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@property
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@ -1115,6 +1132,7 @@ class QemuVM(BaseNode):
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self._stop_cpulimit()
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if self.on_close != "save_vm_state":
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await self._clear_save_vm_stated()
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await self._export_config()
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await super().stop()
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async def _open_qemu_monitor_connection_vm(self, timeout=10):
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@ -1627,6 +1645,96 @@ class QemuVM(BaseNode):
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log.info("{} returned with {}".format(self._get_qemu_img(), retcode))
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return retcode
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async def _mcopy(self, *args):
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env = os.environ
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env["MTOOLSRC"] = 'mtoolsrc'
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try:
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process = await asyncio.create_subprocess_exec("mcopy", *args, stdin=subprocess.DEVNULL, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, cwd=self.working_dir, env=env)
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(stdout, _) = await process.communicate()
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retcode = process.returncode
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except (OSError, subprocess.SubprocessError) as e:
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log.error("mcopy failure: {}".format(e))
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return 1
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if retcode != 0:
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stdout = stdout.decode("utf-8").rstrip()
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if stdout:
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log.error("mcopy failure: {}".format(stdout))
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else:
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log.error("mcopy failure: return code {}".format(retcode))
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return retcode
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async def _export_config(self):
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disk_name = getattr(self, "config_disk_name")
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if not disk_name or \
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not os.path.exists(os.path.join(self.working_dir, disk_name)):
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return
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config_dir = os.path.join(self.working_dir, "configs")
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zip_file = os.path.join(self.working_dir, "config.zip")
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try:
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shutil.rmtree(config_dir, ignore_errors=True)
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os.mkdir(config_dir)
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if os.path.exists(zip_file):
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os.remove(zip_file)
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if await self._mcopy("-s", "-m", "x:/", config_dir) == 0:
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shutil.make_archive(zip_file[:-4], "zip", config_dir)
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except OSError as e:
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log.error("Can't export config: {}".format(e))
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finally:
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shutil.rmtree(config_dir, ignore_errors=True)
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async def _import_config(self):
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disk_name = getattr(self, "config_disk_name")
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zip_file = os.path.join(self.working_dir, "config.zip")
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if not disk_name or not os.path.exists(zip_file):
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return
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config_dir = os.path.join(self.working_dir, "configs")
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disk = os.path.join(self.working_dir, disk_name)
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try:
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shutil.rmtree(config_dir, ignore_errors=True)
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os.mkdir(config_dir)
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shutil.unpack_archive(zip_file, config_dir)
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shutil.copyfile(getattr(self, "config_disk_image"), disk)
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config_files = [os.path.join(config_dir, fname)
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for fname in os.listdir(config_dir)]
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if config_files:
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if await self._mcopy("-s", "-m", *config_files, "x:/") != 0:
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os.remove(disk)
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os.remove(zip_file)
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except OSError as e:
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log.error("Can't import config: {}".format(e))
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os.remove(zip_file)
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finally:
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shutil.rmtree(config_dir, ignore_errors=True)
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def _disk_interface_options(self, disk, disk_index, interface, format=None):
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options = []
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extra_drive_options = ""
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if format:
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extra_drive_options += ",format={}".format(format)
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# From Qemu man page: if the filename contains comma, you must double it
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# (for instance, "file=my,,file" to use file "my,file").
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disk = disk.replace(",", ",,")
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if interface == "sata":
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# special case, sata controller doesn't exist in Qemu
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options.extend(["-device", 'ahci,id=ahci{}'.format(disk_index)])
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options.extend(["-drive", 'file={},if=none,id=drive{},index={},media=disk{}'.format(disk, disk_index, disk_index, extra_drive_options)])
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options.extend(["-device", 'ide-drive,drive=drive{},bus=ahci{}.0,id=drive{}'.format(disk_index, disk_index, disk_index)])
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elif interface == "nvme":
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options.extend(["-drive", 'file={},if=none,id=drive{},index={},media=disk{}'.format(disk, disk_index, disk_index, extra_drive_options)])
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options.extend(["-device", 'nvme,drive=drive{},serial={}'.format(disk_index, disk_index)])
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elif interface == "scsi":
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options.extend(["-device", 'virtio-scsi-pci,id=scsi{}'.format(disk_index)])
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options.extend(["-drive", 'file={},if=none,id=drive{},index={},media=disk{}'.format(disk, disk_index, disk_index, extra_drive_options)])
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options.extend(["-device", 'scsi-hd,drive=drive{}'.format(disk_index)])
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#elif interface == "sd":
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# options.extend(["-drive", 'file={},id=drive{},index={}{}'.format(disk, disk_index, disk_index, extra_drive_options)])
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# options.extend(["-device", 'sd-card,drive=drive{},id=drive{}'.format(disk_index, disk_index, disk_index)])
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else:
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options.extend(["-drive", 'file={},if={},index={},media=disk,id=drive{}{}'.format(disk, interface, disk_index, disk_index, extra_drive_options)])
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return options
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async def _disk_options(self):
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options = []
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qemu_img_path = self._get_qemu_img()
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@ -1691,27 +1799,33 @@ class QemuVM(BaseNode):
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else:
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disk = disk_image
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# From Qemu man page: if the filename contains comma, you must double it
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# (for instance, "file=my,,file" to use file "my,file").
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disk = disk.replace(",", ",,")
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options.extend(self._disk_interface_options(disk, disk_index, interface))
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if interface == "sata":
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# special case, sata controller doesn't exist in Qemu
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options.extend(["-device", 'ahci,id=ahci{}'.format(disk_index)])
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options.extend(["-drive", 'file={},if=none,id=drive{},index={},media=disk'.format(disk, disk_index, disk_index)])
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options.extend(["-device", 'ide-drive,drive=drive{},bus=ahci{}.0,id=drive{}'.format(disk_index, disk_index, disk_index)])
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elif interface == "nvme":
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options.extend(["-drive", 'file={},if=none,id=drive{},index={},media=disk'.format(disk, disk_index, disk_index)])
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options.extend(["-device", 'nvme,drive=drive{},serial={}'.format(disk_index, disk_index)])
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elif interface == "scsi":
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options.extend(["-device", 'virtio-scsi-pci,id=scsi{}'.format(disk_index)])
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options.extend(["-drive", 'file={},if=none,id=drive{},index={},media=disk'.format(disk, disk_index, disk_index)])
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options.extend(["-device", 'scsi-hd,drive=drive{}'.format(disk_index)])
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#elif interface == "sd":
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# options.extend(["-drive", 'file={},id=drive{},index={}'.format(disk, disk_index, disk_index)])
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# options.extend(["-device", 'sd-card,drive=drive{},id=drive{}'.format(disk_index, disk_index, disk_index)])
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# config disk
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disk_image = getattr(self, "config_disk_image")
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if disk_image:
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if getattr(self, "_hdd_disk_image"):
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log.warning("Config disk: blocked by disk image 'hdd'")
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else:
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options.extend(["-drive", 'file={},if={},index={},media=disk,id=drive{}'.format(disk, interface, disk_index, disk_index)])
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disk_name = getattr(self, "config_disk_name")
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disk = os.path.join(self.working_dir, disk_name)
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interface = getattr(self, "hda_disk_interface", "ide")
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await self._import_config()
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if not os.path.exists(disk):
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try:
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shutil.copyfile(disk_image, disk)
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except OSError as e:
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raise QemuError("Could not create '{}' disk image: {}".format(disk_name, e))
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mtoolsrc = os.path.join(self.working_dir, "mtoolsrc")
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if not os.path.exists(mtoolsrc):
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try:
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with open(mtoolsrc, 'w') as outfile:
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outfile.write('drive x:\n')
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outfile.write(' file="{}"\n'.format(disk))
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outfile.write(' partition=1\n')
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except OSError as e:
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raise QemuError("Could not create 'mtoolsrc': {}".format(e))
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options.extend(self._disk_interface_options(disk, 3, interface, "raw"))
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return options
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