Re: I/O question

["William A. Mahaffey III" <wam%hiwaay.net@localhost>]

On 08/04/15 07:05, Chris Bannister wrote:
> On Tue, Aug 04, 2015 at 10:49:52AM +0100, Ian Clark wrote:
> > On 28 July 2015 at 23:52, William A. Mahaffey III <wam%hiwaay.net@localhost> wrote:
> > >
> > [anip]
> > > The RAID in question has 4 active drives, 1 parity drive & 1 spare, created
> > > from identical ~900 GiB partitions on each of 6 7200 RPM 1 TB SATA3 HDD's.
> > What are your partition values (for the underlying drives), it sounds
> > like these aren't aligned correctly.
> >
> > (I have a 3x2TB SATA HDs in raid5 and your above command runs in 3 seconds.
> grrr, there is no 'above command' it's been snipped. :(


Here it is:


time dd if=/dev/zero of=./testfile bs=16k count=32768


executed while sitting in my home directory on the RAID5 /home partition.

--

	William A. Mahaffey III

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