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From: Paolo Bonzini <pbonzini@redhat.com>
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Date: Tue, 22 Mar 2016 19:06:23 +0100
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Subject: Re: [Qemu-devel] iotest 026 -nocache is broken
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To: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>, qemu-devel <qemu-devel@nongnu.org>
Cc: Kevin Wolf <kwolf@redhat.com>, Max Reitz <mreitz@redhat.com>



On 22/03/2016 19:00, Vladimir Sementsov-Ogievskiy wrote:
> Hi all!
> 
> Just a notice
> 
> for commit (near to master branch top)
> commit 3666a97f78704b941c360dc917acb14c8774eca7
> Author: Eric Blake <eblake@redhat.com>
> Date:   Thu Mar 17 16:48:40 2016 -0600
> 
>     qapi: Use anonymous bases in QMP flat unions
> 
> ./configure --target-list=x86_64-softmmu
> 
> ...
> 
> ./check -T -nocache -qcow2 026
> 
> gives a lot of
> +Failed to flush the L2 table cache: No space left on device
> +Failed to flush the refcount block cache: No space left on device
> 
> and some other differences.
> 
> this affects ./tests/check-block.sh
> 
> I've failed to find commit, for which this test was working..
> 
> it fails even for the first commit, where 026.out.nocache was introduced:
> 
> commit 8f94b077877151de93a63c73f796897309568ddb
> Author: Kevin Wolf <kwolf@redhat.com>
> Date:   Wed Sep 4 13:16:05 2013 +0200
> 
>     qemu-iotests: Fixed test case 026
> 
> 
> May be I'm doing something wrong, but I can't imagine what..

This test fails with different error messages depending on whether you
use nocache or writethrough.

Paolo