Speeding up resilvering

[Mike Tancsa]

On 7/8/2015 10:22 AM, Karl Denninger wrote:
>>> What OS version?
>>>
>> 10.1-RELEASE-p10
>>
>> 	Cheers,
>>
>> 	Matthew
> Look at the IO saturation on the disk channel(s) involved with either
> systat -vm or iostat.  If the channel is saturated then there's nothing
> you can do in terms of tuning; the question then turns to why actual I/O
> performance is so poor and has to be addressed there.

I had one server that was taking ages, and it turned out to be the
controller, not the disk that was hosed. As Karl suggested, take a look
at the throughput on gstat. Is anyone disk or groups of disks lagging
far behind on write speeds ?  In my case, it was a very obvious and
glaring outlier.

	---Mike



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Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike at sentex.net
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