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Re: [Qemu-devel] [PATCH 1/1] block: add cache mode with direct IO and wi
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From: |
Denis V. Lunev |
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Subject: |
Re: [Qemu-devel] [PATCH 1/1] block: add cache mode with direct IO and without flushes |
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Date: |
Thu, 15 Sep 2016 19:39:00 +0300 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 |
On 09/15/2016 07:09 PM, Kevin Wolf wrote:
> Am 15.09.2016 um 15:19 hat Denis V. Lunev geschrieben:
>> This mode could be very useful for flush bottlenecks evaluation and for
>> running non-persistent VMs, when host crash is considered not fatal.
>>
>> Signed-off-by: Denis V. Lunev <address@hidden>
>> CC: Kevin Wolf <address@hidden>
>> CC: Max Reitz <address@hidden>
> Why not just specify the individual options?
>
> -drive file=...,cache.direct=on,cache.no-flush=on
>
> Kevin
then we need to have three options:
cache.direct=on/off
cache.flush=on/off (default on)
cache.writethrough=on/off
What will have preference, old style option, new style option, rightmost
option?
Den