Re: [PATCH] block: remove artifical max_hw_sectors cap

From: Christoph Hellwig
Date: Fri Oct 17 2014 - 09:15:55 EST


On Wed, Oct 01, 2014 at 02:12:58PM -0700, Christoph Hellwig wrote:
> On Wed, Oct 01, 2014 at 06:59:34PM +0000, Elliott, Robert (Server Storage) wrote:
> > One supporting example: A low limit interferes with creation of
> > full stripe writes for RAID controllers.
>
> Yes, both Linux mdraid and parity raids are often crippled by the
> default. The mdadm default of 512kb for each chunk combined with
> the default limit very much guarantees a horrible out of the box
> experience.

Jens, can you apply this patch once the 3.19 queue opens?
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