[OmniOS-discuss] 4kn or 512e with ashift=12

Geoff Nordli geoffn at gnaa.net
Mon Mar 21 02:59:19 UTC 2016



Hi Fred.

Definitely, the ashift parameter has been around on the illumos for a 
couple of years.

thanks,

Geoff

On 16-03-20 05:21 PM, Fred Liu wrote:
> The ashift parameter doesn't apply in illumos if my memory serves me 
> well. It was introduced by ZoL.
>
> Thanks.
>
> Fred
>
>
>
>
>
>
>
> On Sun, Mar 20, 2016 at 1:37 PM -0700, "Geoff Nordli" <geoffn at gnaa.net 
> <mailto:geoffn at gnaa.net>> wrote:
>
> Quick, question.
>
> Any performance differences between 4Kn and 512e with ashift=12?
>
> I am thinking there should not be, since they will both write the full
> 4K block size.
>
> The workload will be virtual machines using a zvol.
>
> thanks,
>
> Geoff
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