[CentOS] RAID rebuild time and disk utilization....

Les Mikesell lesmikesell at gmail.com
Mon Sep 27 13:24:52 EDT 2010


On 9/27/2010 12:19 PM, Benjamin Franz wrote:
> On 09/27/2010 08:15 AM, Tom Bishop wrote:
>> So I'm in the process of building and testing a raid setup and it
>> appeared to take along time to build I came across some settings for
>> setting the min amount of time and that helped but it appears that one
>> of the disks is struggling  (100 utilization) vs the other one...I was
>> wondering if anyone else has seen this and if so, is their a solution
>> for it...my 2 disks are 1 Samsung F3 1tb /dev/sdb and 1 Seagate
>> 7200.12 1Tb /dev/sdc...smartctl looks good on both....
>>
>>
>
> [...]
>
> What is the output from 'cat /proc/mdstat'?

Also, head position/motion is the usual limiting factor with disk 
performance.  Do you have other disk activity that will keep yanking the 
head on the active drive away from the track currently needed for the 
rebuild?

-- 
   Les Mikesell
    lesmikesell at gmail.com


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