Re: [Qemu-devel] IO errors in guest caused by LTP dio test

[Andi Kleen]

On Mon, Jun 27, 2011 at 05:59:41PM +0200, Kevin Wolf wrote:
> Am 23.06.2011 01:36, schrieb Andi Kleen:
> > 
> > Running LTP testcases/kernel/io/direct_io/test_dma_thread_diotest7
> > causes IO errors in the guest.  There are no IO errors on the host.
> > 
> > Kernel Linux 3.0.0-rc*
> > Using a standard emulated IDE -hda image.
> 
> Couldn't reproduce this in a quick test with a random guest I had
> available. What is your complete qemu command line? Is the problem new

-m 1500M -smp 2               \
-hda ~/qemu/suse-11.1-64.img            \
-kernel arch/x86/boot/bzImage -append "root=/dev/sda1 debug $EXTRA" "$@" 

Could it be related to the image?

suse11.3-64.img: Qemu Image, Format: Qcow , Version: 1 , Disk Size could be: 
83886080 * 256 bytes

> with the 3.0 RCs or does it also happen with kernels that my existing
> guests are likely to have in use - say, the F15 kernel?

It happened on older kernels too.
> 
> I guess with virtio-blk you don't see the problems?

Will try later.


-Andi

-- 
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