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Fix Qemu VM state support after closing a project and check for JSON data returned by qemu-img. Fixes #1591

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This commit is contained in:
grossmj
2019-05-19 17:59:00 +07:00
parent 424db843ca
commit e8b8554c1a
3 changed files with 48 additions and 23 deletions
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58
gns3server/compute/qemu/qemu_vm.py
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@ -966,7 +966,10 @@ class QemuVM(BaseNode):
set_link_commands.append("set_link gns3-{} off".format(adapter_number))
else:
set_link_commands.append("set_link gns3-{} off".format(adapter_number))
await self._control_vm_commands(set_link_commands)
if "-loadvm" not in command_string:
# only set the link statuses if not restoring a previous VM state
await self._control_vm_commands(set_link_commands)
try:
await self.start_wrap_console()
@ -1143,7 +1146,9 @@ class QemuVM(BaseNode):
if not (await super().close()):
return False
self.on_close = "power_off"
#FIXME: Don't wait for ACPI shutdown when closing the project, should we?
if self.on_close == "shutdown_signal":
self.on_close = "power_off"
await self.stop()
for adapter in self._ethernet_adapters:
@ -1848,18 +1853,22 @@ class QemuVM(BaseNode):
if not os.path.exists(disk):
continue
output = await subprocess_check_output(qemu_img_path, "info", "--output=json", disk)
json_data = json.loads(output)
if "snapshots" in json_data:
for snapshot in json_data["snapshots"]:
if snapshot["name"] == snapshot_name:
# delete the snapshot
command = [qemu_img_path, "snapshot", "-d", snapshot_name, disk]
retcode = await self._qemu_img_exec(command)
if retcode:
stdout = self.read_qemu_img_stdout()
log.warning("Could not delete saved VM state from disk {}: {}".format(disk, stdout))
else:
log.info("Deleted saved VM state from disk {}".format(disk))
if output:
try:
json_data = json.loads(output)
except ValueError as e:
raise QemuError("Invalid JSON data returned by qemu-img while looking for the Qemu VM saved state snapshot: {}".format(e))
if "snapshots" in json_data:
for snapshot in json_data["snapshots"]:
if snapshot["name"] == snapshot_name:
# delete the snapshot
command = [qemu_img_path, "snapshot", "-d", snapshot_name, disk]
retcode = await self._qemu_img_exec(command)
if retcode:
stdout = self.read_qemu_img_stdout()
log.warning("Could not delete saved VM state from disk {}: {}".format(disk, stdout))
else:
log.info("Deleted saved VM state from disk {}".format(disk))
except subprocess.SubprocessError as e:
raise QemuError("Error while looking for the Qemu VM saved state snapshot: {}".format(e))
@ -1879,14 +1888,19 @@ class QemuVM(BaseNode):
if not os.path.exists(disk):
continue
output = await subprocess_check_output(qemu_img_path, "info", "--output=json", disk)
json_data = json.loads(output)
if "snapshots" in json_data:
for snapshot in json_data["snapshots"]:
if snapshot["name"] == snapshot_name:
log.info('QEMU VM "{name}" [{id}] VM saved state detected (snapshot name: {snapshot})'.format(name=self._name,
id=self.id,
snapshot=snapshot_name))
return ["-loadvm", snapshot_name]
if output:
try:
json_data = json.loads(output)
except ValueError as e:
raise QemuError("Invalid JSON data returned by qemu-img while looking for the Qemu VM saved state snapshot: {}".format(e))
if "snapshots" in json_data:
for snapshot in json_data["snapshots"]:
if snapshot["name"] == snapshot_name:
log.info('QEMU VM "{name}" [{id}] VM saved state detected (snapshot name: {snapshot})'.format(name=self._name,
id=self.id,
snapshot=snapshot_name))
return ["-loadvm", snapshot_name]
except subprocess.SubprocessError as e:
raise QemuError("Error while looking for the Qemu VM saved state snapshot: {}".format(e))
return []