On Sun Jan 27, 2013 at 08:26:56 +0100, Wolfgang Denk wrote:

I have seen "mismatch_cnt is not 0" warnings in the past, but that has
always been with RAID 1 arrays, and with relatively small numbers on
/sys/block/md*/md/mismatch_cnt; my understanding was that this was not
actually critical.

However, after updating to Fedora 18, I get this message from all
updated
systems that have RAID 6 arrays, and with _huge_ numbers of
mismatch_cnt, like that:

<-snip->

# cat /sys/block/md0/md/mismatch_cnt
362732152

Is this after having run a check, or just after boot? I've seen some odd
numbers at times, but they've gone away after running a check
(presumably something not being initialised).

Cheers,
    Robin
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