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

From: Philippe Mathieu-Daudé
Subject: Re: [Qemu-devel] [PATCH v4 09/11] tests/vm: netbsd autoinstall, using serial console
Date: Fri, 5 Jul 2019 12:47:16 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0

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

 "file=%s,if=none,id=%s,cache=writeback,format=raw" % (tarfile, name),

 "virtio-blk,drive=%s,serial=%s,bootindex=1" % (name, name)

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