* Configure speed of checkarray in mdadm?
@ 2009-05-03 15:06 David Vuorio
2009-05-03 19:50 ` Thomas Backlund
2009-05-17 9:22 ` David Vuorio
0 siblings, 2 replies; 3+ messages in thread
From: David Vuorio @ 2009-05-03 15:06 UTC (permalink / raw)
To: linux-raid
Hi,
I'm a happy user of mdadm 2.6.7.1 (2.6.7.1-1ubuntu8) and would like to
make a request.
When my monthly RAID check is triggered (I have two SATA disks in a
RAID1 setup) it consumes a significant amount of resources, essentially
freezing the system for the most part.
While I might cancel or reschedule these checks as needed, I would
prefer if the bandwidth usage could be configured manually, or even
adjusted dynamically. Alternatively, is there already a way to minimize
the impact beforehand?
Thanks a lot for your help.
Kind regards,
David Vuorio
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Configure speed of checkarray in mdadm?
2009-05-03 15:06 Configure speed of checkarray in mdadm? David Vuorio
@ 2009-05-03 19:50 ` Thomas Backlund
2009-05-17 9:22 ` David Vuorio
1 sibling, 0 replies; 3+ messages in thread
From: Thomas Backlund @ 2009-05-03 19:50 UTC (permalink / raw)
To: linux-raid
David Vuorio skrev:
> Hi,
>
> I'm a happy user of mdadm 2.6.7.1 (2.6.7.1-1ubuntu8) and would like to
> make a request.
>
> When my monthly RAID check is triggered (I have two SATA disks in a
> RAID1 setup) it consumes a significant amount of resources, essentially
> freezing the system for the most part.
>
> While I might cancel or reschedule these checks as needed, I would
> prefer if the bandwidth usage could be configured manually, or even
> adjusted dynamically. Alternatively, is there already a way to minimize
> the impact beforehand?
>
> Thanks a lot for your help.
>
Change value of /sys/block/mdX/md/sync_speed_max ?
--
Thomas
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Configure speed of checkarray in mdadm?
2009-05-03 15:06 Configure speed of checkarray in mdadm? David Vuorio
2009-05-03 19:50 ` Thomas Backlund
@ 2009-05-17 9:22 ` David Vuorio
1 sibling, 0 replies; 3+ messages in thread
From: David Vuorio @ 2009-05-17 9:22 UTC (permalink / raw)
To: linux-raid
David Vuorio wrote:
> When my monthly RAID check is triggered (I have two SATA disks in a
> RAID1 setup) it consumes a significant amount of resources, essentially
> freezing the system for the most part.
Hmm,
I had missed some vital parts of the md man page for some reason, and
apparently wasn't persistent enough in Googling either...
Well, /proc/sys/dev/raid/speed_limit_{min,max} should be enough for my
purposes. Problem solved, I guess.
Kind regards,
/David
^ permalink raw reply [flat|nested] 3+ messages in thread
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2009-05-03 15:06 Configure speed of checkarray in mdadm? David Vuorio
2009-05-03 19:50 ` Thomas Backlund
2009-05-17 9:22 ` David Vuorio
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