RAID scrubbing

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Hi all,

I've got a system using two RAID5 arrays that share some physical
devices, combined using LVM.  Oddly, when I "echo repair >
/sys/block/md0/md/sync_action", once it finishes, it automatically
starts a repair on md1 also, even though I haven't requested it.
Also, if I try to stop it using "echo idle >
/sys/block/md0/md/sync_action", a repair starts on md1 within a few
seconds.  If I stop that md1 repair immediately, sometimes it will
respawn and start doing the repair again on md1.  What should I be
expecting here?  If I start a repair on one array, is it supposed to
automatically go through and do it on all arrays sharing that
personality?

Thanks!
-Justin
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