Cancel buttom does not work while backing up qubes

quququbebebe · July 9, 2021, 2:08pm

Qubes OS version:

Qubes release 4.1

Everything is up to date

Are you using any testing repositories? If so, please list them AND where they are enabled (i.e., dom0, template, or standalone).

No

Affected component(s):

Backup Qubes

Steps to reproduce the behavior:

→ With the interface, start backing up some qubes
→ Click on the cancel buttom

Expected behavior:

Cancel the process of backup up qubes

Actual behavior:

Qubes manager and the backup window get frozen for ever with this error showing up once in journalctl :

Jul 09 19:48:03 dom0 qubesd[3160]: Future exception was never retrieved
Jul 09 19:48:03 dom0 qubesd[3160]: future:
Jul 09 19:48:03 dom0 qubesd[3160]: BrokenPipeError

General notes:

adw · July 9, 2021, 2:39pm

Is this the same bug?

github.com/QubesOS/qubes-issues

Backup cancel freezes qube manager

opened 06:09AM - 18 Apr 21 UTC

Eric678

C: manager/widget P: default T: bug needs diagnosis

**Qubes OS version** R4.0 **Affected component(s) or functionality** … Qube Manager **Brief summary** Cancelling a backup while the file is being written through an appVM does stop the data flow, however the manager stops processing X events. Even redraw events are ignored. A bunch of qubes-rpc processes are left hanging in the target appVM. **How Reproducible** Seems 100%, only tried a couple of times. **To Reproduce** Steps to reproduce the behavior: 1. Set up a backup through to appVM file on a volume that is attached from sys-usb 2. Start the transfer, then cancel, and qube manager freezes **Expected behavior** Manager keeps working after the cancel and no processes are left hanging in the appVM **Actual behavior** Manager freezes and needs to be killed and restarted. The manager is not using CPU when it is frozen. cats in target appVM need to be manually killed so that the volume can be unmounted **Screenshots** **Additional context** The output volume was run through another appVM(f33) to decrypt LUKS, as I don't want to do that in sys-usb. Testing to check that backup works after switching all system qubes to deb-10-min. **Solutions you've tried** Kill and restart manager, then kill rpc processes in the appVM. **Relevant [documentation](https://www.qubes-os.org/doc/) you've consulted** **Related, [non-duplicate](https://www.qubes-os.org/doc/reporting-bugs/#new-issues-should-not-be-duplicates-of-existing-issues) issues** I am guessing it was working fine in 2015 when Marek fixed #793, something must have crept in, perhaps as this is not in the test suite.

quququbebebe · July 9, 2021, 2:46pm

Ah I didn’t looked at 4.0 bugs on github, yes its indeed the same bug