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From Yoshikazu Nojima <m...@ynojima.net>
Subject Re: [RFC] adding volume provisioning method option
Date Sat, 01 Feb 2014 05:04:50 GMT
Hello Nux,

Thank you for your comment. I will prepare feature specification.

Regards,

2014-01-31 Nux! <nux@li.nux.ro>:
> On 31.01.2014 20:24, Yoshikazu Nojima wrote:
>>
>> Afternoon All,
>>
>> Is there anyone working on adding volume provisioning method option?
>> As you know, thin provisioning of a volume save consumption of a
>> storage, and fat provisioning improves IOPS performance.
>> Especially, Qcow2 can save storage consumption and achive relatively
>> better performance than default by provisioning a volume with an
>> option "preallocation=metadata", which makes an image file a sparse
>> file.
>>
>> http://itscblog.tamu.edu/improve-disk-io-performance-in-kvm/#.232---preallocation
>>
>> Any thoughts about this?
>> If it is ok, I will write a feature specification on confluence and
>> start implementation.
>>
>> Regards,
>> Noji
>>
>>
>> Yoshikazu Nojima <mail@ynojima.net>
>
>
> Hello,
>
> I thought preallocation=metadata is common practice since years. Now I find
> out ACS doesn't actually use it?
> If so, this is really _bad_ and needs to be fixed ASAP...
>
> Thanks Noji
>
> --
> Sent from the Delta quadrant using Borg technology!
>
> Nux!
> www.nux.ro

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