[Bug 14579] Devices disappear; on bus reset machine hangs; on I/O machine hangs

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https://bugzilla.kernel.org/show_bug.cgi?id=14579





--- Comment #8 from lkolbe@xxxxxxxxxxxxxxxxxxxxxxxx  2010-04-13 09:25:22 ---
fyi: Supermicro's X7DWN+ mainboard needs a BIOS-Update (at least version 1.2b,
no changelog available though) to cope with multiple SAS-controllers under
linux. In the end, Kashyap Desai was right when he suspected it had something
to do with IRQ-routing.

Seagates' firmware problems (timeouts) with Adaptecs RAID-Controller didn't
help with this either, as every few days more than two disks at a time were
thrown out of the array resulting in loss of said array. Supposedly, the newest
firmware 'DN06' for the Barracuda.ES2 drives fix these problems, but our
distributor was so kind to replace all our Seagate drives with Hitachis.

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