Re: [Qemu-devel] Problems with MIPS Malta SSH tests in make check-acceptance

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

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On 9/18/19 9:16 AM, David Gibson wrote:
> Hi,
> 
> I'm finding make check-acceptance is currently useless for me as a
> pre-pull test, because a bunch of the tests are not at all reliable.
> There are a bunch which I'm still investigating, but for now I'm
> looking at the MIPS Malta SSH tests.
> 
> There seem to be at least two problems here.  First, the test includes
> a download of a pretty big guest disk image.  This can easily exhaust
> the 2m30 timeout on its own.

Gerd raised this issue few months ago:

https://www.mail-archive.com/qemu-devel@nongnu.org/msg615619.html

> Even without the timeout, it makes the test really slow, even on
> repeated runs.  Is there some way we can make the image download part
> of "building" the tests rather than actually running the testsuite, so
> that a) the test themselves go faster and b) we don't include the
> download in the test timeout - obviously the download speed is hugely
> dependent on factors that aren't really related to what we're testing
> here.
> 
> In the meantime, I tried hacking it by just increasing the timeout to
> 10m.  That got several of the tests working for me, but one still
> failed.  Specifically 'LinuxSSH.test_mips_malta32eb_kernel3_2_0' still
> timed out for me, but now after booting the guest, rather than during
> the image download.  Looking at the avocado log file I'm seeing a
> bunch of soft lockup messages from the guest console, AFAICT.  So it
> looks like we have a real bug here, which I suspect has been
> overlooked precisely because the download problems mean this test
> isn't reliable.
> 
> Any thoughts on how to improve the situation?

Maybe we should disable this test and run it manually...


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