Dirty shutdown keeps preloaded disposables on list even after qubesd restart #10326
Description
Qubes OS release
4.3
Brief summary
Qube fails to start when machine is forcefully restarted while a preloaded Qube is running/paused.
Steps to reproduce
- Make sure a Qube is preloaded. Preloading only happens when at least one dispvm was created for a template:
[user@dom0 ~]$ qvm-run --dispvm default-dvm true
Running 'true' on $dispvm:default-dvm
- Check that preloaded Qube is registered:
[user@dom0 ~]$ qvm-features default-dvm preload-dispvm
disp2639
-
"Force an unexpected reboot"
-
Try to start Qube:
[user@dom0 ~]$ qvm-run --dispvm default-dvm true
Running 'true' on $dispvm:default-dvm
$dispvm:default-dvm: Got empty response from qubesd. See journalctl in dom0 for details.
Logs:
Oct 15 08:01:56 dom0 qubesd[2677]: ERROR: unhandled exception while calling src=b'dom0' meth=b'admin.vm.CreateDisposable' dest=b'default-dv>
Oct 15 08:01:56 dom0 qubesd[2677]: Traceback (most recent call last):
Oct 15 08:01:56 dom0 qubesd[2677]: File "/usr/lib/python3.13/site-packages/qubes/api/__init__.py", line 339, in respond
Oct 15 08:01:56 dom0 qubesd[2677]: response = await self.mgmt.execute(
Oct 15 08:01:56 dom0 qubesd[2677]: ^^^^^^^^^^^^^^^^^^^^^^^^
Oct 15 08:01:56 dom0 qubesd[2677]: untrusted_payload=untrusted_payload
Oct 15 08:01:56 dom0 qubesd[2677]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 15 08:01:56 dom0 qubesd[2677]: )
Oct 15 08:01:56 dom0 qubesd[2677]: ^
Oct 15 08:01:56 dom0 qubesd[2677]: File "/usr/lib/python3.13/site-packages/qubes/api/admin.py", line 1333, in create_disposable
Oct 15 08:01:56 dom0 qubesd[2677]: dispvm = await qubes.vm.dispvm.DispVM.from_appvm(appvm)
Oct 15 08:01:56 dom0 qubesd[2677]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 15 08:01:56 dom0 qubesd[2677]: File "/usr/lib/python3.13/site-packages/qubes/vm/dispvm.py", line 505, in from_appvm
Oct 15 08:01:56 dom0 qubesd[2677]: qube = app.domains[item]
Oct 15 08:01:56 dom0 qubesd[2677]: ~~~~~~~~~~~^^^^^^
Oct 15 08:01:56 dom0 qubesd[2677]: File "/usr/lib/python3.13/site-packages/qubes/app.py", line 546, in __getitem__
Oct 15 08:01:56 dom0 qubesd[2677]: raise KeyError(key)
Oct 15 08:01:56 dom0 qubesd[2677]: KeyError: 'disp2639'
Workaround
Temporarily disable preloading:
[user@dom0 ~]$ qvm-features dom0 preload-dispvm-max
1
[user@dom0 ~]$ qvm-features dom0 preload-dispvm-max 0
[user@dom0 ~]$ qvm-features dom0 preload-dispvm-max 1
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