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[Bug 476863] Hard drive reboots
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Thu, 11 Jun 2009 20:36:10 -0600
  • Message-id: <20090612023610.160C224550C@xxxxxxxxxxxxxxxxxxxxxx>
http://bugzilla.novell.com/show_bug.cgi?id=476863

User teheo@xxxxxxxxxx added comment
http://bugzilla.novell.com/show_bug.cgi?id=476863#c8





--- Comment #8 from Tejun Heo <teheo@xxxxxxxxxx> 2009-06-11 20:36:05 MDT ---
Yeah, that's about the same error you reported originally. Two most likely
scenarios are...

1. Power supply can't hold voltage to the drive under certain circumstances.
This actually happens more often than expected and results in the smart
counters increased and leads to data corruption. If you've been seeing those
errors for long time and haven't experienced filesystem corruption, you
probably aren't experiencing this but smartctl counter check would be nice to
make sure.

2. Other hardware problems - cabling, electro magnetic interference (noise in
power or whatever, SATA links are very susceptible), extra connectors in
hotplug bays (I experience this from time to time), bad controller / drive
combination (usually solved by lowering link speed to 1.5Gbps).

So, ruling out #1 is priority. #2 is, although not pretty, usually safe and
given the fragile nature of SATA links libata driver is built to work around
those problems in robust manner, so unless the problems occur too frequently
and hinder with general operation, you can simply ignore them as "normal
errors".

Thanks.

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