Re: [Xen-devel] [linux-linus test] 25478: regressions - FAIL

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Fri, Mar 14, 2014 at 05:07:35PM +0000, Ian Campbell wrote:
> On Fri, 2014-03-14 at 16:42 +0000, xen.org wrote:
> > flight 25478 linux-linus real [real]
> > http://www.chiark.greenend.org.uk/~xensrcts/logs/25478/
> > 
> > Regressions :-(
> > 
> > Tests which did not succeed and are blocking,
> > including tests which could not be run:
> >  test-amd64-i386-pair   17 guest-migrate/src_host/dst_host fail REGR. vs. 
> > 12557
> 
> Is anyone looking at these? Apparently this hasn't passed for 23 months:

I believe I asked to tweak somethings 23 months ago to troubleshoot this
but never heard back from you.

> http://xenbits.xen.org/gitweb/?p=linux-pvops.git;a=shortlog;h=refs/heads/tested/linux-linus
> 
> Looking through the recent failures this migration one seems quite
> common but there seem to be a few others, search for "[linux-linux
> test]" in http://lists.xen.org/archives/html/xen-devel/2014-03/ for some
> examples.
> 
> The particular failure here is
> http://www.chiark.greenend.org.uk/~xensrcts/logs/25478/test-amd64-i386-pair/info.html
>  and the console logs 
> http://www.chiark.greenend.org.uk/~xensrcts/logs/25478/test-amd64-i386-pair/serial-gall-mite.log
>   are full of

The 'info.html' you alluded - I just saw that happening with Xen 4.5, but
I don't see the SWIOTLB issue in my dom0.

>         Mar 14 13:24:27.592641 [ 1010.742462] mptsas 0000:03:00.0: swiotlb 
> buffer is full
> 
> The migration itself times out after 5 minutes or so (for a 512M guest)

The more recent Linux kernel will also tell you what type of requests it was.
You might also want to try a larger SWIOTLB buffer, swiotlb=26422 for fun.

I think you are looking at two different issues.
> 
> Ian.
> 
> 

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