Does iostat give any clues as to which drive is busy (i.e. more busy than the
others as far as % usage?)  

iostat -d -x 1  

Is the LVM ok otherwise?  

Kelly  
>  Thu Jul 14 2016 12:32:24 PM CDT from "gregrwm" <tclug1 at whitleymott.net> 
>Subject: [tclug-list] raid corrupted? but no clue from mdstat
>
>        what's up with my mdadm?  note how it's taking 97% of CPU:
>....
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