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Re: [Qemu-devel] [RFC 0/3] block: Inquire images’ rotational info
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From: |
Max Reitz |
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Subject: |
Re: [Qemu-devel] [RFC 0/3] block: Inquire images’ rotational info |
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Date: |
Thu, 13 Jun 2019 18:20:57 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 |
On 13.06.19 18:12, Stefan Hajnoczi wrote:
> On Fri, May 24, 2019 at 07:28:09PM +0200, Max Reitz wrote:
>> Hi,
>>
>> http://lists.nongnu.org/archive/html/qemu-block/2019-05/msg00569.html
>> shows that optimizations affect HDDs and SSDs differently. It would be
>> nice if we could differentiate between the two and then choose to adjust
>> our behavior depending on whether a given image is stored on an HDD or
>> not.
>>
>> Or maybe it isn’t so nice. That’s one reason this is an RFC.
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> Seems useful.
>
> As long as this isn't exposed to the guest automatically (e.g. via SCSI)
> then it's fine since guest-visible values are not allowed to change
> across live migration or storage migration.
Urgh. I wanted to do that in v1. Then I guess I better won’t...
Max
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