On Mon, 6 Oct 2014 15:29:13 +0200 Patrik Horník [off-list ref] wrote:

Hello,

is it possible to cancel RAID 6 array check? echo check >
/sys/block/mdX/md/sync_action apparently only pauses it and next check
continuing from saved position. (I guess /sys/block/mdX/md/sync_min)

I want to achieve two things:

- Start check from the start of the array.

- Be sure I can shutdown array without any ill effect because check
was interrupted.

I guess that position will be cleared when array is stopped and
started again, but I dont want to guess and experiment... :)

Why ever not?  Guessing and experimenting is AWESOME.  We call it "Science".
I can understand that you might not want to experiment we real data, but
creating a few loop-back devices with "losetup", forming them into an array,
and experimenting on that can be very worthwhile.

NeilBrown

Thanks.

Best regards,

Patrik
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