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List:       fedora-test-list
Subject:    Re: Validation test proposal: mediawriter testing table
From:       Martin Bříza <mbriza () redhat ! com>
Date:       2017-01-13 8:13:52
Message-ID: op.ytzvtfrgtrc8xl () dhcp-4-209 ! brq ! redhat ! com
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On Fri, 13 Jan 2017 04:30:38 +0100, Chris Murphy <lists@colorremedies.com>  
wrote:

> On Thu, Jan 12, 2017 at 4:32 PM, Adam Williamson
> <adamwill@fedoraproject.org> wrote:
>> Hi folks! So I finally got around to that 'think about USB test
>> coverage' item that's been on my todo list forever.
>>
>> I propose we add a table to the Installation Validation page. The
>> purpose is simply to check that writing images is working with
>> mediawriter in the major supported environments: Windows, macOS , and
>> the supported stable Fedora releases. So it could just look like this:
>>
>>
>>                         Windows    macOS    Fedora 24    Fedora 25
>> QA:Testcase_USB_fmw
>>
>> with the intent being that we at least check that writing any one
>> release blocking image with mediawriter in each environment.
>>
>> We could split Windows into 7, 8 and 10 or something, but not sure if
>> it's really necessary...
>>
>> Thoughts?
>
> Well I don't really want to eat a hat, because I've had my fill for a
> lifetime, but I'd eat my hat if FMW works on Windows 10 but does not
> work on Windows 7. Or vice versa. So may be ask mbriza which one to
> test on, and hope the numbers game fills in the rest on its own. The
> API/ABI stability on Windows is pretty extreme.  In order of market
> share though, by a long shot it's Windows 7, then 10, and a distant
> third is 8.1 and then 8(.0) barely registers. So weirdly enough,
> chances are it'll work on 8/8.1 if it works on 7 and 10. So a thorough
> test would be testing both 7 and 10. Less thorough, but sane, is
> testing just on 10.
>
> (For those who don't know, it's possible to get a free copy of Windows
> Enterprise, the installer iSO will install a copy of Windows that'll
> work for 90 days, the timer starts from the time of installation; i.e.
> it's not the download ISO that's time limited.)
>
> FWIW at the moment on Fedora 25 I'm running into these two bugs and
> can't write images at all with FMW.
> https://bugzilla.redhat.com/show_bug.cgi?id=1412063
> https://bugzilla.redhat.com/show_bug.cgi?id=1412057
>
>

It does not work on Windows 7 for some folks. On my laptop with Win 7, it  
works. I've got a virtual machine where it doesn't work for testing  
though. I suspect there's a problem with ANGLE (which is a library that  
translates OpenGL calls to DirectX on Windows) combined with hardware  
drivers not supporting recent enough OpenGL. This is probably a problem  
with Qt packaging on Fedora but as of now, I don't know how to fix that.  
There's a bug [1] open for this specific issue for a while now.

I'm currently waiting for the release of Qt 5.8 where there is a more  
advanced level of deciding which rendering backend to use for QML and it  
can even fallback to a software renderer now which could be sufficient for  
FMW. However, I need to test that first.

So in the light of this, I agree with Chris that testing on Windows 7 and  
10 would probably be what we should do.

Chris, regarding the issues you mentioned:
  #1412063 should be fixed in 4.0.8 (now in updates-testing)
  #1412057 I have a fix for this using a different method in the UDisks2  
API - now FMW will seem to be "benchmarking" a drive instead of writing  
(especially in polkit dialogs). OpenForRestore doesn't restore writing AND  
reading the written data, hence I needed to use a method that allows me to  
do so. The source of your problem was using OpenForRestore and then  
OpenForBackup - in case of large images or slow flash drives, a timeout  
somewhere in polkit ran out and it requested authentication again.


[1] https://bugzilla.redhat.com/show_bug.cgi?id=1319946
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