Forcing md array parity check
Submitted by linportal on Sat, 2006-10-21 21:36
Force your md array to recheck parity from time to time, to assure data consistency. The following command will read every block on every disk in the md0 array:
echo check > /sys/block/md0/md/sync_action
The command will proceed in the background and respect other accesses to the block device by slowing down, just like regular md resyncs do. You can monitor progress in /proc/mdstat pseudo-file.
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