Re: dm: pass up rotational flag

Jens Axboe
2011-05-26T19:14:24Z

On 2011-05-26 20:29, Martin K. Petersen wrote:
>>>>>> "Mike" == Mike Snitzer <snitzer@redhat.com> writes:
>
>>> Allow the NONROT flag to be passed through to linear mappings if all
>>> underlying device are non-rotational. Tools like ureadahead will
>>> schedule IOs differently based on the rotational flag.
>
> Mike> Thanks for doing this, looks good in general.
>
> I'd rather we made the rotational property part of the topology instead
> of having to special-case it in DM. I seem to recall posting a patch
> that did that at some point but I can't seem to find it...

Agree, would be a better idea.

--
Jens Axboe