Ubuntu
qemu package

  1. Bug #1967814
  2. Comment #14

Comment 14 for bug 1967814

Revision history for this message
bugproxy (bugproxy) wrote : Comment bridged from LTC Bugzilla

------- Comment From <email address hidden> 2022-04-08 05:20 EDT-------
(In reply to comment #81)
> (In reply to comment #80)
> > Let me know if you had time to push the PPA through your testing.
>
> Pulled the PPA
>
> root@ilzlnx3:~# apt info qemu
> Package: qemu
> Version: 1:4.2-3ubuntu6.22~focalppa1
>
> I triggered a path failure from the host and saw the faulty paths on the
> guest but no data miscompares (first time I've ever seen it not having
> miscompares at the first try).
> Recovered and tried again, this time I did got the miscompares, I captured
> the DBGINFO and sosreport, let me know if something else is needed.

Maybe we are hitting a different case. Maybe not. In the past we used to observe multiple types of miscompares one of which is the all zero, and another one is wrong but still disktest data.

I'm curious if we see the wrong disktest data type of miscompare with the patched qemu.

Also I would like to know if the miscompare is still observable after a reboot (i.e. if you destroy and re-start the guest, and then do a manual compare with disktest on the given block (without the write phase).

Also can I help you install a self-built upstream qemu so we can test with that as well? Maybe we are just missing some more patches.