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https://github.com/GNS3/gns3-server
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Refactor code for avoid duplicate in disk management for Qemu
This commit is contained in:
Julien Duponchelle
parent
06b9e46cd2
commit
7422b31b2c
@ -1233,90 +1233,37 @@ class QemuVM(BaseVM):
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options = []
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qemu_img_path = self._get_qemu_img()
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if self._hda_disk_image:
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if not os.path.isfile(self._hda_disk_image) or not os.path.exists(self._hda_disk_image):
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if os.path.islink(self._hda_disk_image):
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raise QemuError("hda disk image '{}' linked to '{}' is not accessible".format(self._hda_disk_image, os.path.realpath(self._hda_disk_image)))
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drives = ["a", "b", "c", "d"]
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for disk_index, drive in enumerate(drives):
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disk_image = getattr(self, "_hd{}_disk_image".format(drive))
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interface = getattr(self, "hd{}_disk_interface".format(drive))
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if not disk_image:
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continue
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disk_name = "hd" + drive
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if not os.path.isfile(disk_image) or not os.path.exists(disk_image):
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if os.path.islink(disk_image):
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raise QemuError("{} disk image '{}' linked to '{}' is not accessible".format(disk_name, disk_image, os.path.realpath(disk_image)))
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else:
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raise QemuError("hda disk image '{}' is not accessible".format(self._hda_disk_image))
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raise QemuError("{} disk image '{}' is not accessible".format(disk_name, disk_image))
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if self._linked_clone:
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hda_disk = os.path.join(self.working_dir, "hda_disk.qcow2")
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if not os.path.exists(hda_disk):
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disk = os.path.join(self.working_dir, "{}_disk.qcow2".format(disk_name))
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if not os.path.exists(disk):
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# create the disk
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try:
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process = yield from asyncio.create_subprocess_exec(qemu_img_path, "create", "-o",
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"backing_file={}".format(self._hda_disk_image),
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"-f", "qcow2", hda_disk)
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"backing_file={}".format(disk_image),
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"-f", "qcow2", disk)
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retcode = yield from process.wait()
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log.info("{} returned with {}".format(qemu_img_path, retcode))
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except (OSError, subprocess.SubprocessError) as e:
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raise QemuError("Could not create hda disk image {}".format(e))
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raise QemuError("Could not create {} disk image {}".format(disk_name, e))
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else:
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hda_disk = self._hda_disk_image
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options.extend(["-drive", 'file={},if={},index=0,media=disk'.format(hda_disk, self.hda_disk_interface)])
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if self._hdb_disk_image:
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if not os.path.isfile(self._hdb_disk_image) or not os.path.exists(self._hdb_disk_image):
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if os.path.islink(self._hdb_disk_image):
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raise QemuError("hdb disk image '{}' linked to '{}' is not accessible".format(self._hdb_disk_image, os.path.realpath(self._hdb_disk_image)))
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else:
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raise QemuError("hdb disk image '{}' is not accessible".format(self._hdb_disk_image))
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if self._linked_clone:
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hdb_disk = os.path.join(self.working_dir, "hdb_disk.qcow2")
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if not os.path.exists(hdb_disk):
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try:
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process = yield from asyncio.create_subprocess_exec(qemu_img_path, "create", "-o",
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"backing_file={}".format(self._hdb_disk_image),
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"-f", "qcow2", hdb_disk)
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retcode = yield from process.wait()
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log.info("{} returned with {}".format(qemu_img_path, retcode))
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except (OSError, subprocess.SubprocessError) as e:
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raise QemuError("Could not create hdb disk image {}".format(e))
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else:
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hdb_disk = self._hdb_disk_image
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options.extend(["-drive", 'file={},if={},index=1,media=disk'.format(hdb_disk, self.hdb_disk_interface)])
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if self._hdc_disk_image:
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if not os.path.isfile(self._hdc_disk_image) or not os.path.exists(self._hdc_disk_image):
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if os.path.islink(self._hdc_disk_image):
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raise QemuError("hdc disk image '{}' linked to '{}' is not accessible".format(self._hdc_disk_image, os.path.realpath(self._hdc_disk_image)))
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else:
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raise QemuError("hdc disk image '{}' is not accessible".format(self._hdc_disk_image))
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if self._linked_clone:
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hdc_disk = os.path.join(self.working_dir, "hdc_disk.qcow2")
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if not os.path.exists(hdc_disk):
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try:
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process = yield from asyncio.create_subprocess_exec(qemu_img_path, "create", "-o",
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"backing_file={}".format(self._hdc_disk_image),
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"-f", "qcow2", hdc_disk)
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retcode = yield from process.wait()
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log.info("{} returned with {}".format(qemu_img_path, retcode))
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except (OSError, subprocess.SubprocessError) as e:
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raise QemuError("Could not create hdc disk image {}".format(e))
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else:
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hdc_disk = self._hdc_disk_image
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options.extend(["-drive", 'file={},if={},index=2,media=disk'.format(hdc_disk, self.hdc_disk_interface)])
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if self._hdd_disk_image:
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if not os.path.isfile(self._hdd_disk_image) or not os.path.exists(self._hdd_disk_image):
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if os.path.islink(self._hdd_disk_image):
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raise QemuError("hdd disk image '{}' linked to '{}' is not accessible".format(self._hdd_disk_image, os.path.realpath(self._hdd_disk_image)))
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else:
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raise QemuError("hdd disk image '{}' is not accessible".format(self._hdd_disk_image))
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if self._linked_clone:
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hdd_disk = os.path.join(self.working_dir, "hdd_disk.qcow2")
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if not os.path.exists(hdd_disk):
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try:
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process = yield from asyncio.create_subprocess_exec(qemu_img_path, "create", "-o",
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"backing_file={}".format(self._hdd_disk_image),
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"-f", "qcow2", hdd_disk)
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retcode = yield from process.wait()
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log.info("{} returned with {}".format(qemu_img_path, retcode))
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except (OSError, subprocess.SubprocessError) as e:
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raise QemuError("Could not create hdd disk image {}".format(e))
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else:
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hdd_disk = self._hdd_disk_image
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options.extend(["-drive", 'file={},if={},index=3,media=disk'.format(hdd_disk, self.hdd_disk_interface)])
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disk = disk_image
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options.extend(["-drive", 'file={},if={},index={},media=disk'.format(disk, interface, disk_index)])
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return options
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@ -321,11 +321,35 @@ def test_disk_options(vm, tmpdir, loop, fake_qemu_img_binary):
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open(vm._hda_disk_image, "w+").close()
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with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
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loop.run_until_complete(asyncio.async(vm._disk_options()))
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options = loop.run_until_complete(asyncio.async(vm._disk_options()))
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assert process.called
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args, kwargs = process.call_args
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assert args == (fake_qemu_img_binary, "create", "-o", "backing_file={}".format(vm._hda_disk_image), "-f", "qcow2", os.path.join(vm.working_dir, "hda_disk.qcow2"))
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assert options == ['-drive', 'file=' + os.path.join(vm.working_dir, "hda_disk.qcow2") + ',if=ide,index=0,media=disk']
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def test_disk_options_multiple_disk(vm, tmpdir, loop, fake_qemu_img_binary):
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vm._hda_disk_image = str(tmpdir / "test0.qcow2")
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vm._hdb_disk_image = str(tmpdir / "test1.qcow2")
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vm._hdc_disk_image = str(tmpdir / "test2.qcow2")
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vm._hdd_disk_image = str(tmpdir / "test3.qcow2")
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open(vm._hda_disk_image, "w+").close()
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open(vm._hdb_disk_image, "w+").close()
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open(vm._hdc_disk_image, "w+").close()
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open(vm._hdd_disk_image, "w+").close()
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with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
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options = loop.run_until_complete(asyncio.async(vm._disk_options()))
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assert options == [
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'-drive', 'file=' + os.path.join(vm.working_dir, "hda_disk.qcow2") + ',if=ide,index=0,media=disk',
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'-drive', 'file=' + os.path.join(vm.working_dir, "hdb_disk.qcow2") + ',if=ide,index=1,media=disk',
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'-drive', 'file=' + os.path.join(vm.working_dir, "hdc_disk.qcow2") + ',if=ide,index=2,media=disk',
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'-drive', 'file=' + os.path.join(vm.working_dir, "hdd_disk.qcow2") + ',if=ide,index=3,media=disk'
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]
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@pytest.mark.skipif(sys.platform.startswith("win"), reason="Not supported on Windows")
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def test_set_process_priority(vm, loop, fake_qemu_img_binary):
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