linux-kernel - Re: change strip_cache_size freeze the whole raid

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Message-ID: <45B4D0ED.7030500@maine.edu>
Date:	Mon, 22 Jan 2007 09:57:49 -0500
From:	Steve Cousins <steve.cousins@...ne.edu>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
CC:	kyle <kylewong@...tha.com>, linux-raid@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: change strip_cache_size freeze the whole raid



Justin Piszcz wrote:
> Yes, I noticed this bug too, if you change it too many times or change it 
> at the 'wrong' time, it hangs up when you echo numbr > 
> /proc/stripe_cache_size.
> 
> Basically don't run it more than once and don't run it at the 'wrong' time 
> and it works.  Not sure where the bug lies, but yeah I've seen that on 3 
> different machines!

Can you tell us when the "right" time is or maybe what the "wrong" time 
is?  Also, is this kernel specific?  Does it (increasing 
stripe_cache_size) work with RAID6 too?

Thanks,

Steve
-- 
______________________________________________________________________
  Steve Cousins, Ocean Modeling Group    Email: cousins@...t.maine.edu
  Marine Sciences, 452 Aubert Hall       http://rocky.umeoce.maine.edu
  Univ. of Maine, Orono, ME 04469        Phone: (207) 581-4302


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