Re: md RAID with enterprise-class SATA or SAS drives

[Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx>]

On 5/23/2012 9:08 PM, NeilBrown wrote:
> On Wed, 23 May 2012 20:18:06 -0500 Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx>
> wrote:
> 
>> On 5/23/2012 6:46 PM, Stan Hoeppner wrote:
>>> On 5/23/2012 2:49 PM, David Brown wrote:
>>>
>>>> It looks like Shaohua Li has done some testing, found that there is a
>>>> slow-down even with just 2 or 4 disks, and has written patches to fix it
>>>> (for raid1 and raid10 so far), which is very nice.
>>>
>>> Ahh, thanks David.  I wasn't aware of Shaohua Li's
>>> work on this.  Got a link to his documentation and patches, or article,
>>> by chance?
>>
>> My Google searches only turn up Shaohua Li's TRIM patches.  I don't
>> believe the issue we're discussing has anything to do with TRIM, though
>> I can't be 100% sure as Mark didn't provide much detail of his thread
>> ceiling problem, and I don't have a suitable system to do proper testing.
>>
>> Again it would be nice to have a link to Shaohua Li's work to which you
>> refer to determine if it's applicable to this issue.
>>
> 
> It's probably in your INBOX.
> 
> http://www.spinics.net/lists/raid/msg38899.html
> 
> NeilBrown

Indeed they are.  Well, in a sort folder actually.  I still shouldn't
have missed them.  Please feel free to plant virtual palms to my
forehead if you like. :)

-- 
Stan

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