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

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Message-ID: <00ad01c73e37$e60c2ef0$28df0f3d@kylecea1512a3f>
Date:	Mon, 22 Jan 2007 23:13:34 +0800
From:	"kyle" <kylewong@...tha.com>
To:	"Steve Cousins" <steve.cousins@...ne.edu>,
	"Justin Piszcz" <jpiszcz@...idpixels.com>
Cc:	<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

I think if your /sys/block/md_your_raid6/md/ have a file 
"stripe_cache_size", then it should works with raid6 too.

Kyle

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