Re: Hints on reducing kickouts

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On Thu, Mar 01, 2012 at 07:14:38PM +0100, John Obaterspok wrote:
> Hello,
> 
> Occasionally my system don't shutdown cleanly and almost all time
> mdadm kicks one of the disks on the RAID5 array.
> Is there anything I can do to help prevent this?
> 
> I'm using sw raid 5 with 3 x 3TB Hitachi Deskstar (7K3000 HDS723030ALA640 64MB).
> 
> --------

[snip...]

I'm guessing you're trying to avoid re-syncing a 6TB array in the
event that your host goes down in an un-clean state.  In that
case, I would suggest using a write-intent bitmap on the array.
If you're concerned about loss of performance when using a
bitmap, use an external bitmap that is located on another
spindle(s).

Bryan
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