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Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatib
From: |
Bruce Rogers |
Subject: |
Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatibility |
Date: |
Mon, 01 Oct 2012 09:39:47 -0600 |
>>> On 10/1/2012 at 07:19 AM, Anthony Liguori <address@hidden> wrote:
> Jan Kiszka <address@hidden> writes:
>
>> On 2012-10-01 11:31, Marcelo Tosatti wrote:
>>
>> It's not just about default configs. We need to validate if the
>> migration formats are truly compatible (qemu-kvm -> QEMU, the other way
>> around definitely not). For the command line switches, we could provide
>> a wrapper script that translates them into upstream format or simply
>> ignores them. That should be harmless to carry upstream.
>
> qemu-kvm has:
>
> -no-kvm
> -no-kvm-irqchip
> -no-kvm-pit
> -no-kvm-pit-reinjection
> -tdf <- does nothing
>
> There are replacements for all of the above. If we need to add them to
> qemu.git, it's not big deal to add them.
>
> -drive ...,boot= <- this is ignored
>
> cpu_set command for CPU hotplug which is known broken in qemu-kvm.
>
> testdev which is nice but only used for development
>
> Default nic is rtl8139 vs. e1000.
>
> Some logic to move change the default VGA ram size to 16mb for pc-1.2
> (QEMU uses 16mb by default now too).
>
> I think at this point, none of this matters but I added the various
> distro maintainers to the thread.
>
> I think it's time for the distros to drop qemu-kvm and just ship
> qemu.git. Is there anything else that needs to happen to make that
> switch?
We are seriously considering moving to qemu.git for our SP3 release of
SUSE SLES 11. There are just a handful of patches that provide the backwards
compatibility we need to maintain (default to kvm, default nic model,
vga ram size), so assuming there is a 100% commitment to fully supporting
kvm in qemu going forward (which I don't doubt) I think this is a good time
for us to make that switch.
Bruce
Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatibility, Alexander Graf, 2012/10/01
Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatibility,
Bruce Rogers <=
Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatibility, Daniel P. Berrange, 2012/10/02