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Re: [Qemu-devel] Bug#768517: qemu-system-x86: virtio-scsi unreliable - c
From: |
Michael Tokarev |
Subject: |
Re: [Qemu-devel] Bug#768517: qemu-system-x86: virtio-scsi unreliable - crashes and write failures |
Date: |
Sat, 08 Nov 2014 07:40:59 +0300 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.2.0 |
[I forgot to add one comment]
08.11.2014 07:32, Michael Tokarev wrote:
> Control: tag -1 + moreinfo confirmed
>
> [Adding address@hidden
>
> 08.11.2014 04:28, Ray Kohler wrote:
>>
>> virtio-scsi is quite unreliable compared to the version in wheezy. I see
>> many crashes, with this output:
>>
>> qemu-system-x86_64: wrong size for virtio-scsi headers
So you're saying this is a regression compared with version 1.1.2.
But the thing is -- did virtio-scsi _ever_ worked in 1.1? I don't
think it was. At least I can't perform the same OpenBSD install
in 1.1 verison at all -- the installer can't write anything to
virtio-scsi, it fails for me right when writing a partition table,
with "Invalid argument/Illegal Request" SCSI error code.
So it looks like this is not a regression, quite the opposite...
Unless, ofcourse, I'm doing something incorrectly.
qemu-system-x86_64 -enable-kvm -m 1G \
-device virtio-scsi-pci,id=scsi \
-drive file=foo.img,if=none,cache=unsafe,id=d \
-device scsi-hd,drive=d \
-vga std -cpu host -cdrom cd56.iso -monitor stdio
(for both 2.1 and 1.1.)
Thanks,
/mjt