Re: [Qemu-devel] [PATCH v4 09/11] tests/vm: netbsd autoinstall, using serial console

[Kamil Rytarowski]

On 05.07.2019 12:47, Philippe Mathieu-Daudé wrote:
> On 7/5/19 12:43 PM, Kamil Rytarowski wrote:
>> On 05.07.2019 12:24, Alex Bennée wrote:
>>>
>>> Gerd Hoffmann <address@hidden> writes:
>>>
>>>> Instead of fetching the prebuilt image from patchew download the install
>>>> iso and prepare the image locally.  Install to disk, using the serial
>>>> console.  Create qemu user, configure ssh login.  Install packages
>>>> needed for qemu builds.
>>>
>>> I've had to drop this from my v3 PR as Peter was seeing a very
>>> slow/hanging install when running his merge tests. I've tried to
>>> reproduce and I see it stall while installing packages but nowhere near
>>> the delay Peter has seen.
>>>
>>> Any pointers on how to debug gratefully received.
>>>
>>
>> Does it use virtio? There were performance issues with virio disk device.
> 
> Yes, virtio-blk, you can see how the VM is started looking at
> tests/vm/basevm.py:
> 
>  "-drive",
>  "file=%s,if=none,id=%s,cache=writeback,format=raw" % (tarfile, name),
> 
>  "-device",
>  "virtio-blk,drive=%s,serial=%s,bootindex=1" % (name, name)
> 

Try to switch to a non-virtio option and retry.

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