Re: raidframe performance question

[Paul Goyette <paul%whooppee.com@localhost>]

On Fri, 6 May 2011, Greg Oster wrote:

> On Thu, 5 May 2011 21:08:43 -0700 (PDT)
> Paul Goyette <paul%whooppee.com@localhost> wrote:
>
> > This is my first time playing with raidframe, so I've probably gone
> > and done something totally stupid.  However...
>
> not that I can see...
>
> > Does anyone have a clue why the drive might be so busy?  Is this
> > normal? At this rate it will take another day to initialize a 465GB
> > mirror! With a SATA-II transfer speed of 3Gbytes/sec (300MBytes/sec)
> > it really should be a little bit faster.   :)
>
> I would expect that RAID set to initialize in about 1.5 hours...  2
> hours would be taking too long...
>
> Were the disks zeroed or otherwise identical before doing the
> initialization, or did you have (different) data on each of them?
> That's the only reason I can think of why the build might take a bit
> longer -- but even then, if they had old data, then I'd expect it to
> take maybe 2.5 hours at the most...

One of the drives had a "factory installed" copy of Centos on it, while 
the other had simply been formatted (fdisk & disklabel), so the contents 
were not identical.

I would be happy with 2.5 hours to initialize parity - at the rate it's 
going now, I'm looking at ~50 hours!


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