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https://github.com/GNS3/gns3-server.git
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Handle creating Qemu disk images and resizing
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grossmj committed
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@@ -234,69 +234,6 @@ class Qemu(BaseManager):
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return os.path.join("qemu", f"vm-{legacy_vm_id}")
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async def create_disk(self, qemu_img, path, options):
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"""
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Create a Qemu disk with qemu-img
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:param qemu_img: qemu-img binary path
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:param path: Image path
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:param options: Disk image creation options
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"""
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try:
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img_format = options.pop("format")
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img_size = options.pop("size")
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if not os.path.isabs(path):
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directory = self.get_images_directory()
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os.makedirs(directory, exist_ok=True)
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path = os.path.join(directory, os.path.basename(path))
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try:
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if os.path.exists(path):
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raise QemuError(f"Could not create disk image '{path}', file already exists")
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except UnicodeEncodeError:
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raise QemuError(
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"Could not create disk image '{}', "
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"path contains characters not supported by filesystem".format(path)
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)
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command = [qemu_img, "create", "-f", img_format]
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for option in sorted(options.keys()):
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command.extend(["-o", f"{option}={options[option]}"])
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command.append(path)
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command.append(f"{img_size}M")
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print(command)
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process = await asyncio.create_subprocess_exec(*command)
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await process.wait()
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except (OSError, subprocess.SubprocessError) as e:
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raise QemuError(f"Could not create disk image {path}:{e}")
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async def resize_disk(self, qemu_img, path, extend):
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"""
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Resize a Qemu disk with qemu-img
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:param qemu_img: qemu-img binary path
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:param path: Image path
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:param size: size
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"""
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if not os.path.isabs(path):
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directory = self.get_images_directory()
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os.makedirs(directory, exist_ok=True)
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path = os.path.join(directory, os.path.basename(path))
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try:
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if not os.path.exists(path):
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raise QemuError(f"Qemu disk '{path}' does not exist")
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command = [qemu_img, "resize", path, f"+{extend}M"]
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process = await asyncio.create_subprocess_exec(*command)
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await process.wait()
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log.info(f"Qemu disk '{path}' extended by {extend} MB")
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except (OSError, subprocess.SubprocessError) as e:
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raise QemuError(f"Could not update disk image {path}:{e}")
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def _init_config_disk(self):
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"""
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Initialize the default config disk
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@@ -280,7 +280,7 @@ class QemuVM(BaseNode):
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:param value: New disk value
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"""
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value = self.manager.get_abs_image_path(value, self.project.path)
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value = self.manager.get_abs_image_path(value, self.working_dir)
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if not self.linked_clone:
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for node in self.manager.nodes:
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if node != self and getattr(node, variable) == value:
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@@ -493,7 +493,7 @@ class QemuVM(BaseNode):
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"""
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if cdrom_image:
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self._cdrom_image = self.manager.get_abs_image_path(cdrom_image, self.project.path)
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self._cdrom_image = self.manager.get_abs_image_path(cdrom_image, self.working_dir)
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log.info(
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'QEMU VM "{name}" [{id}] has set the QEMU cdrom image path to {cdrom_image}'.format(
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@@ -551,7 +551,7 @@ class QemuVM(BaseNode):
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:param bios_image: QEMU bios image path
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"""
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self._bios_image = self.manager.get_abs_image_path(bios_image, self.project.path)
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self._bios_image = self.manager.get_abs_image_path(bios_image, self.working_dir)
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log.info(
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'QEMU VM "{name}" [{id}] has set the QEMU bios image path to {bios_image}'.format(
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name=self._name, id=self._id, bios_image=self._bios_image
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@@ -923,7 +923,7 @@ class QemuVM(BaseNode):
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:param initrd: QEMU initrd path
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"""
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initrd = self.manager.get_abs_image_path(initrd, self.project.path)
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initrd = self.manager.get_abs_image_path(initrd, self.working_dir)
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log.info(
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'QEMU VM "{name}" [{id}] has set the QEMU initrd path to {initrd}'.format(
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@@ -957,7 +957,7 @@ class QemuVM(BaseNode):
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:param kernel_image: QEMU kernel image path
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"""
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kernel_image = self.manager.get_abs_image_path(kernel_image, self.project.path)
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kernel_image = self.manager.get_abs_image_path(kernel_image, self.working_dir)
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log.info(
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'QEMU VM "{name}" [{id}] has set the QEMU kernel image path to {kernel_image}'.format(
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name=self._name, id=self._id, kernel_image=kernel_image
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@@ -1599,6 +1599,69 @@ class QemuVM(BaseNode):
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)
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)
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async def create_disk_image(self, disk_name, options):
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"""
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Create a Qemu disk
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:param disk_name: disk name
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:param options: disk creation options
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"""
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try:
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qemu_img_path = self._get_qemu_img()
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img_format = options.pop("format")
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img_size = options.pop("size")
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disk_path = os.path.join(self.working_dir, disk_name)
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try:
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if os.path.exists(disk_path):
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raise QemuError(f"Could not create disk image '{disk_name}', file already exists")
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except UnicodeEncodeError:
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raise QemuError(
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f"Could not create disk image '{disk_name}', "
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"Disk image name contains characters not supported by the filesystem"
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)
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command = [qemu_img_path, "create", "-f", img_format]
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for option in sorted(options.keys()):
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command.extend(["-o", f"{option}={options[option]}"])
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command.append(disk_path)
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command.append(f"{img_size}M")
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retcode = await self._qemu_img_exec(command)
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if retcode:
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stdout = self.read_qemu_img_stdout()
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raise QemuError(f"Could not create '{disk_name}' disk image: qemu-img returned with {retcode}\n{stdout}")
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else:
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log.info(f"QEMU VM '{self.name}' [{self.id}]: Qemu disk image'{disk_name}' created")
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except (OSError, subprocess.SubprocessError) as e:
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stdout = self.read_qemu_img_stdout()
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raise QemuError(f"Could not create '{disk_name}' disk image: {e}\n{stdout}")
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async def resize_disk_image(self, disk_name, extend):
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"""
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Resize a Qemu disk
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:param disk_name: disk name
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:param extend: new size
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"""
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try:
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qemu_img_path = self._get_qemu_img()
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disk_path = os.path.join(self.working_dir, disk_name)
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if not os.path.exists(disk_path):
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raise QemuError(f"Qemu disk image '{disk_name}' does not exist")
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command = [qemu_img_path, "resize", disk_path, f"+{extend}M"]
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retcode = await self._qemu_img_exec(command)
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if retcode:
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stdout = self.read_qemu_img_stdout()
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raise QemuError(f"Could not update '{disk_name}' disk image: qemu-img returned with {retcode}\n{stdout}")
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else:
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log.info(f"QEMU VM '{self.name}' [{self.id}]: Qemu disk image '{disk_name}' extended by {extend} MB")
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except (OSError, subprocess.SubprocessError) as e:
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stdout = self.read_qemu_img_stdout()
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raise QemuError(f"Could not update '{disk_name}' disk image: {e}\n{stdout}")
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@property
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def started(self):
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"""
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@@ -1791,7 +1854,8 @@ class QemuVM(BaseNode):
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*command, stdout=fd, stderr=subprocess.STDOUT, cwd=self.working_dir
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)
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retcode = await process.wait()
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log.info(f"{self._get_qemu_img()} returned with {retcode}")
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if retcode != 0:
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log.info(f"{self._get_qemu_img()} returned with {retcode}")
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return retcode
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async def _find_disk_file_format(self, disk):
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@@ -2406,20 +2470,20 @@ class QemuVM(BaseNode):
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answer[field] = getattr(self, field)
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except AttributeError:
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pass
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answer["hda_disk_image"] = self.manager.get_relative_image_path(self._hda_disk_image, self.project.path)
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answer["hda_disk_image"] = self.manager.get_relative_image_path(self._hda_disk_image, self.working_dir)
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answer["hda_disk_image_md5sum"] = md5sum(self._hda_disk_image)
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answer["hdb_disk_image"] = self.manager.get_relative_image_path(self._hdb_disk_image, self.project.path)
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answer["hdb_disk_image"] = self.manager.get_relative_image_path(self._hdb_disk_image, self.working_dir)
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answer["hdb_disk_image_md5sum"] = md5sum(self._hdb_disk_image)
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answer["hdc_disk_image"] = self.manager.get_relative_image_path(self._hdc_disk_image, self.project.path)
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answer["hdc_disk_image"] = self.manager.get_relative_image_path(self._hdc_disk_image, self.working_dir)
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answer["hdc_disk_image_md5sum"] = md5sum(self._hdc_disk_image)
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answer["hdd_disk_image"] = self.manager.get_relative_image_path(self._hdd_disk_image, self.project.path)
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answer["hdd_disk_image"] = self.manager.get_relative_image_path(self._hdd_disk_image, self.working_dir)
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answer["hdd_disk_image_md5sum"] = md5sum(self._hdd_disk_image)
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answer["cdrom_image"] = self.manager.get_relative_image_path(self._cdrom_image, self.project.path)
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answer["cdrom_image"] = self.manager.get_relative_image_path(self._cdrom_image, self.working_dir)
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answer["cdrom_image_md5sum"] = md5sum(self._cdrom_image)
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answer["bios_image"] = self.manager.get_relative_image_path(self._bios_image, self.project.path)
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answer["bios_image"] = self.manager.get_relative_image_path(self._bios_image, self.working_dir)
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answer["bios_image_md5sum"] = md5sum(self._bios_image)
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answer["initrd"] = self.manager.get_relative_image_path(self._initrd, self.project.path)
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answer["initrd"] = self.manager.get_relative_image_path(self._initrd, self.working_dir)
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answer["initrd_md5sum"] = md5sum(self._initrd)
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answer["kernel_image"] = self.manager.get_relative_image_path(self._kernel_image, self.project.path)
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answer["kernel_image"] = self.manager.get_relative_image_path(self._kernel_image, self.working_dir)
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answer["kernel_image_md5sum"] = md5sum(self._kernel_image)
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return answer
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