Problem was a faulty sata-connector. Bug can be closed!
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https://bugs.launchpad.net/bugs/1124260
Title:
Severe crash
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I replaced all the SATA-cables and changed the powercables to the
drives, on hardware-raid I've not seen problems on 3.20 kernel. Tried a
new RAID setup using mdadm today and immediately the errors returned in
the syslog. Now installed 3.8.0-030800rc7-generic but still have errors.
I will be
Public bug reported:
I've had 2 severe crashes today with a fresh install of 12.04. The
machine has 6x2 tb in Raid5 (dm_raid45) and 3x1.5 tb JBOD on a JMicron
Sata-controller.. The crashes occur when writing large amounts of data
to the RAID-array, have not seen it on the JMicron controller..