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Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD |
Date: |
Fri, 15 Mar 2013 15:35:48 +0000 |
On 5 March 2013 00:44, Aurelien Jarno <address@hidden> wrote:
> On Tue, Mar 05, 2013 at 08:22:57AM +0800, Peter Maydell wrote:
>> What effect does this actually have on the user experience?
>
> The effect is that the user don't has to specify the interface type.
> Basically:
>
> -drive file=/path/to/file,if=sd
> can be replaced by
> -drive file=/path/to/file
>
> It means the user doesn't have to know the details of the machine to
> know how to attach a disk. Note that the user here can also be a script,
> which then becomes a bit simpler.
I'm not convinced this is a good thing -- I think you should have
to know that you're attaching an SD card and not a hard disk,
because the performance is much worse. In particular if you
don't specify 'cache=writeback' your performance will be
dreadful, so you need to do something different from hard
disks anyhow.
-- PMM
- [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Aurelien Jarno, 2013/03/04
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Peter Maydell, 2013/03/04
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Aurelien Jarno, 2013/03/04
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Markus Armbruster, 2013/03/06
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD,
Peter Maydell <=
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Aurelien Jarno, 2013/03/15
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Peter Maydell, 2013/03/15
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Aurelien Jarno, 2013/03/16
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Peter Maydell, 2013/03/16
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Aurelien Jarno, 2013/03/17
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Peter Maydell, 2013/03/17
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Paolo Bonzini, 2013/03/17
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Peter Maydell, 2013/03/17
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Aurelien Jarno, 2013/03/17
- Re: [Qemu-devel] [PATCH] hw/vexpress: set default block type to SD, Paolo Bonzini, 2013/03/18