On 08/13/2014 10:29 PM, Brad Campbell wrote:
On 14/08/14 01:25, Ram Ramesh wrote:
On a slightly different topic, will it be faster after a disk
fail/replacement as opposed to raid reshaping?
Much.
I just re-striped a RAID6 changing the chunk size from 128k to 64k.
This took 12 days all up. It's the seeking that kills it. To replace a
disk or do a resync on the same array takes less than 10 hours.
I am curious. Why do you have to change chunk size? What is the
benefit/advantage?
This seem to confirm the --layout switch Neil Brown talked about. I need
to find that switch. I have one more 3disk-raid5 to 4disk-raid6
reshaping to be done on another machine. I am going to do the --layout
switch and do it in two steps. I suspect it will take about 10 hours
with minimal seek.
Ramesh
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