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Re: [Qemu-devel] [PATCH] QEMU: change default disk cache behavior
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From: |
Jes Sorensen |
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Subject: |
Re: [Qemu-devel] [PATCH] QEMU: change default disk cache behavior |
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Date: |
Thu, 20 May 2010 15:49:17 +0200 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100330 Fedora/3.0.4-1.fc12 Lightning/1.0b2pre Thunderbird/3.0.4 |
On 05/20/10 15:40, Anthony Liguori wrote:
> On 05/20/2010 08:36 AM, Jes Sorensen wrote:
>>> And I strongly suspect that such a blanket change would be wrong but
>>> that a more targeted change like making cache=none default for physical
>>> devices would satisfy mostly everyone.
>>>
>> Is there any other thing than physical devices attached to the -drive
>> parameter?
>
> Image files which are the overwhelming more common use-case.
For image files we certainly want it too, at least for proper ones (ie.
raw). It could be that it causes problems for qcow2.
I'll try and look at it when I am back.
Cheers,
Jes