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Every minute these three lines are added to /var/log/syslog:

Dec  6 06:04:01 machine1234 kernel: last message repeated 3 times
Dec  6 06:04:01 machine1234 CRON[28959]: (root) CMD (/usr/local/rtm/bin/rtm 58 > /dev/null 2> /dev/null)
Dec  6 06:04:01 machine1234 kernel: mdadm: sending ioctl 1261 to a partition!

What's going on?

I'm on Ubuntu 12.04 server edition.

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up vote 2 down vote accepted

This seems to be a bug in linux kernel, but it doesn't seem to be a real problem. Did you make an update of your kernel and or mdadm?

Take a look at the following two links.

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