Re: [Xen-devel] Windows "heinsenbug" (WAS: Re: Notes Design Session: Making Releases Lessons Learned: Improving Our Release Process and Tooling)

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Xen-devel [mailto:xen-devel-bounces@xxxxxxxxxxxxx] On Behalf Of
> Julien Grall
> Sent: 13 September 2017 10:52
> To: Ian Jackson <Ian.Jackson@xxxxxxxxxx>; Jan Beuli ch <jbeulich@xxxxxxxx>
> Cc: Juergen Gross <jgross@xxxxxxxx>; Wei Liu <wei.liu2@xxxxxxxxxx>;
> ross.philipson@xxxxxxxxx; lars.kurth.xen@xxxxxxxxx; xen-
> devel@xxxxxxxxxxxxx; committers@xxxxxxxxxxxxxx
> Subject: [Xen-devel] Windows "heinsenbug" (WAS: Re: Notes Design
> Session: Making Releases Lessons Learned: Improving Our Release Process
> and Tooling)
> 
> Hi all,
> 
> On 07/27/2017 05:56 PM, Ian Jackson wrote:
> > Jan Beulich writes ("Re: Notes Design Session: Making Releases Lessons
> Learned: Improving Our Release Process and Tooling"):
> >> [Lars:]
> >>> Ian: These are most likely software problems, most likely in Xen.
> >>> ISSUE: nobody wants to debug Windows Heisenbugs
> >>
> >> Hmm, I think we believe to have understood what the issue is, it's just
> that
> >> the change needed is on the tool stack side (gracefully deal with a domain
> >> rebooting while being migrated).
> >
> > No, the problem is that we don't understand why the domain is
> > rebooting.  It should not be.
> 
> This bug still seem to be around and likely going to impact once again
> the release testing.
> 
> As discussed during the summit, I am really thinking to make this
> "heinsenbug" a blocker until somehow finally spend sometimes
> investigating the problem and suggest actions.

If testing was done with PV drivers installed then we could get a lot more 
information into the logs. BSODs vs. clean shutdowns (perhaps due to Windows 
Update) would then become obvious.

  Paul

> 
> Cheers,
> 
> --
> Julien Grall
> 
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