So, we have been getting weekly mismatch_cnt emails from a number of machines with raid setups. http://fedoraproject.org/wiki/Infrastructure/SOP/Raid_Mismatch_Count Describes a process to run repair and check on them, but in these cases the mismatches have come back right away. Why is that you might ask? It's because these are all raid-1 setups. There are cases where raid1 can and does have a mismatched sector setup and it's perfectly fine. It's still good to run the weekly check on them in case there is a marginal drive that drops out or otherwise shows lower layer problems. See: https://bugzilla.redhat.com/show_bug.cgi?id=566828 So, moving forward I think I will try and do a "hotfix" for /etc/cron.weekly/99-raid-check and make it not mail for raid1 mismatches. (see patch in above bug) Longer term, perhaps there will be a mdadm update for rhel5, or we will get everything moved to rhel6 (which has the fix already). kevin
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