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SubjectRe: RAID-5 build time calculation?
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On Wed, 2001-11-14 at 07:40, Roy Sigurd Karlsbakk wrote:
> hi all
>
> I apologize if this is more of a support question, but I couldn't find it
> anywhere...
>
> How long time may I have to wait for kernel to build a software RAID-5 on
> 12 18GB 15k SCSI drives? Algorithm is set to left-symmetric and persistent
> superblock is 1.
>
> What can be done to speed this up_
>
> thanks
>

I have seen the raid resync get stuck at really slow rates, it seems to
start running faster if you echo a larger number into

/proc/sys/dev/raid/speed_limit_min

You can look at /proc/mdstat to see how the rebuild is progressing.

Steve


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