Per Andreas Buer wrote:
Andrew Rechenberg <arechenberg@shermfin.com> writes:
Check /proc/sys/dev/raid/speed_limit_[min|max]. If they are set too low then your re-mirror will behave as such. To change just echo a new value:
echo 30000 > /proc/sys/dev/raid/speed_limit_min echo 50000 > /proc/sys/dev/raid/speed_limit_max
I did so - and now:
md6 : active raid1 md16[2] sdd6[0] 117185984 blocks [2/1] [U_] [>....................] recovery = 0.1% (229120/117185984) finish=59.5min speed=32731K/sec
That's probably because you just lowered the values. The maximum is normally 100000. To check what the default values are, reboot and do:
cat /proc/sys/dev/raid/speed_limit_*
Then echo a _larger_ number into those files.
There is no absolute maximum value (except maybe 2^32), so don't be afraid to raise the values to 10 or 100 times what they were. That should ensure that your resync speed is close to its theoretical maximum.
can someone tell me what these numbers means?
of course my goal (as everyones) to achieve the maximum possible performance.
can I do any harm if I set these numbers to high?
it no, why not set it bu default?
thanks in advance.
-- Levente "Si vis pacem para bellum!"
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