Re: [Xen-devel] Test for osstest, features used in Qubes OS

[Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>]

On Thu, May 17, 2018 at 01:26:30PM +0100, Ian Jackson wrote:
> Marek Marczykowski-Górecki writes ("Test for osstest, features used in Qubes 
> OS"):
> > As discussed some time ago, I'd like to help with adding tests for some
> > features we use in Qubes OS.
> > 
> > IMO the easiest thing to test is host suspend. You just need to execute
> > "rtcwake -s 30 -m mem", and see if the host is back to live after ~30s.
> > Right now I know it works on Xen 4.8, but supposedly is broken on
> > staging (haven't tested the most recent version).
> > Next step would be the same while having some domains running.
> > 
> > How the test should look like (where to add this? etc)?
> 
> I guess this should be a new
>   ts-host-suspend-test
> script.
> 
> Is it likely that this will depend on non-buggy host firmware ?  If so
> then we need to make arrangements to test it and only do it on hosts
> which are not buggy.  In practice this probably means wiring it up to
> the automatic host examiner.

Yes, probably.

> > Next things would be mostly related to PCI passthrough:
> >  - PCI passthrough with qemu in stubdomain
> >  - the same as above, but with Linux-based stubdomain (we need cleanup
> >    and send patches for that first, probably 4.12 material)
> >  - guest suspend (recently added libxl_domain_suspend_only), for
> >    different guest types (PV, PVH, HVM), also with/without PCI device
> > 
> > For this, the machine obviously need to have IOMMU (I assume at least
> > some of the hardware used in test lab have it), and some spare PCI
> > device. I use sound card for some of such tests. But testing on USB
> > controllers would be more useful (from out experience, one of the most
> > problematic devices for suspend, sadly also lacking FLR or such...).
> 
> I doubt any of our x86 machines have sound cards. ...  Just looked at
> one and it says
>   00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core
>   Processor HD Audio Controller (rev 06)
> which is obviously mad.
> 
> I'm pretty sure they all have usb controllers.  Almost all of them
> have multiple NICs, often on different pci devices, although it is
> difficult to tell if a NIC not connected to anything is working.
> 
> Eg,
> 
>   02:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network
>   Connection (rev 03)
> 
>   03:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network
>   Connection (rev 03)
> 
> Is there some kind of cheap USB HID, that is interactable-with, which
> we could plug into each machine's USB port ?  I'm slightly concerned
> that plugging in a storage device, or connecting the other NIC, might
> interfere with booting.

I use mass storage for tests... But if you use network boot, it
shouldn't really interfere, no?

> If you want to get pci passthrough tests working I would suggest
> testing it with non-stubdom first.  I assume the config etc. is the
> same, so having got that working, osstest would be able to test it for
> the stubdom tests too.

Oh, I though there are already tests for that...
Yes, good idea.

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?

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