On Wed, May 12, 2010 at 09:34:28AM -0700, Doug wrote:
> We have a 2006 Sun X4500 with Hitachi 500G disk drives.  Its been running for 
> over four years and just now fmadm & zpool reports a disk has failed.  No 
> data was lost (RAIDZ2 + hot spares worked as expected.)  But, the server is 
> out of warranty and we have no hardware support on it.

Well - had the same thing here (X4500, Q1 2007) 2-3 times couple of
month ago. The 'too many errors' msg ringed some bells: do you remember
the race condition problems in the marvell driver (IIRC especially late
u3, u4) which caused many 'bad ...' errors in the logs? So I simply
checked the drive in question (Q&D 2xdd over the whole disk and checked,
whether an error occured). Since not a single error or bad performance
I put it back and no wonder, it is still working ;-) ). 

Your situation might be different, but checking may not hurt - your
disks might be a victim of an SW aka ZFS error counter...

Have fun,
jel.
-- 
Otto-von-Guericke University     http://www.cs.uni-magdeburg.de/
Department of Computer Science   Geb. 29 R 027, Universitaetsplatz 2
39106 Magdeburg, Germany         Tel: +49 391 67 12768
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