Comment # 36 on bug 1193019 from Dario Faggioli

(In reply to Michiya Hagimoto from comment #35)
> I'm sorry, none of the suggested methods worked in my environment.
> I also tested it in a more compact environment and got the same results.
> Should I revert to Qemu before 15.3-2?
>
I can't be 100% sure, but I think it's time to start to think that this is due
to something that is happening inside the guest.

Not necessarily just a BTRFS bug, as I run MicroOS myself on different kind of
real hardware and in VMs, and I don't see the problem. But maybe something that
manifests when BTRFS (or some other block-related kernel component, or
whatever) works in combination with whatever else is involved in your
configuration.

I think a way to test this would be to rollback the guest, if you still have
the snapshots available, to a month ago or in general to a previous state wrt
when the problems started to show up, but I'm curious to hear what Ma Lin
thinks about this...

It may also be useful to start to bring in some block and/or filesystem people,
to see if they have ideas about how to proceed further.