On Wed, 2011-01-12 at 12:38 -0600, Les Mikesell wrote:
> I have a 750Gb 3-member software raid1 where 2 partitions are always
> present and the third is regularly rotated and re-synced (SATA disks in
> hot-swap bays). The timing of the resync seems to be extremely variable
> recently, taking anywhere from 3 to 10 hours even if the partition is
> unmounted and the drives aren't doing anything else and regardless of
> what I echo into /proc/sys/dev/raid/speed_limit_min or _max. Is there
> some way to tell if the drives are going bad or speed it up consistently
> if they aren't?
echo 100000 > /proc/sys/dev/raid/speed_limit_min
echo 100000 > /proc/sys/dev/raid/speed_limit_max
Should equate to around 100MiBs and I suppose bad sectors or punctured
block will bring it to a crawl also. Check the disk out with smart. On
way to tell is keep a "hdparm" baseline.
John
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