[Bug 35946] New: Cannot mark a VM for maintenance if it is running a task

http://bugs.winehq.org/show_bug.cgi?id=35946

Bug ID: 35946
           Summary: Cannot mark a VM for maintenance if it is running a
                    task
           Product: Wine-Testbot
           Version: unspecified
          Hardware: x86
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: unknown
          Assignee: [e-mail]
          Reporter: [e-mail]

To mark a VM for maintenance one sets its status to 'maintenance'.
The problem is that when a VM runs a task its status is 'running' and once its
done the task script blindly sets its status to 'dirty' hence overwriting the
'maintenance' status.

Note that even setting the VM role to 'retired' does not work although the task
script does not explicitly change it. It seems like the whole VM's row gets
rewritten when the the task script saves the new status.

So the task script should refresh its view of the VM status and check that it's
still 'running' before changing it. That still leaves open a small window for
races but that's probably acceptable.

The same problem exists in the RevrtVM.pl script with the 'reverting' and
'sleeping' states.