* RAID-5 build time calculation?
@ 2001-11-14 13:40 Roy Sigurd Karlsbakk
2001-11-14 15:20 ` Steve Lord
0 siblings, 1 reply; 2+ messages in thread
From: Roy Sigurd Karlsbakk @ 2001-11-14 13:40 UTC (permalink / raw)
To: linux-kernel
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
roy
--
Roy Sigurd Karlsbakk, MCSE, MCNE, CLS, LCA
Computers are like air conditioners.
They stop working when you open Windows.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: RAID-5 build time calculation?
2001-11-14 13:40 RAID-5 build time calculation? Roy Sigurd Karlsbakk
@ 2001-11-14 15:20 ` Steve Lord
0 siblings, 0 replies; 2+ messages in thread
From: Steve Lord @ 2001-11-14 15:20 UTC (permalink / raw)
To: Roy Sigurd Karlsbakk; +Cc: linux-kernel
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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2001-11-14 13:40 RAID-5 build time calculation? Roy Sigurd Karlsbakk
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