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

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Message-ID: <Pine.LNX.4.64.0701221010370.1711@p34.internal.lan>
Date:	Mon, 22 Jan 2007 10:10:50 -0500 (EST)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	Steve Cousins <steve.cousins@...ne.edu>
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



On Mon, 22 Jan 2007, Steve Cousins wrote:

> 
> 
> 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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Also, I have not tested the stripe_cache_size under RAID6, I am unsure.

Justin.
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