Re: Problem identified: WAPL/RAIDframe performance problems

[David Laight <david%l8s.co.uk@localhost>]

On Fri, Nov 30, 2012 at 08:00:51AM +0000, Michael van Elst wrote:
> david%l8s.co.uk@localhost (David Laight) writes:
> 
> >I must look at how to determine that disks have 4k sectors and to
> >ensure filesystesm have 4k fragments - regardless of the fs size.
> 
> newfs should already ensure that fragment >= sector.

These disks lie about their actual sector size.
The disk's own software does RMW cycles for 512 byte writes.

        David

-- 
David Laight: david%l8s.co.uk@localhost