gmirror or ata problem

[Oliver Fromme]

Harald Schmalzbauer wrote:
 > I think this is a problem when the internal thermal recalibration takes too 
 > long.
 > Consumer HDDs can be "offline" quiet some time, I don't have numbers handy, 
 > but see Western Digitals explanation on their SATA RE (RaidEdition) Drives. 
 > Again, no link handy, sorry.

That was certainly not the cause of the problem.  First,
the drives aren't "consumer" ones; they're specifically
for server usage and 24h availability.

Second, the problem affected only one drive out of four
identical ones (two machines with two drives each in a
gmirror configuration).  The other three drives never
had any problems whatsoever.

As I wrote recently, we replaced that drive and hadn't
had any problems since.  So it was indeed a hardware
problem with that particular  drive ...  And what ever
kind of problem it was, FreeBSD didn't seem to be able
to report it properly.

Best regards
   Oliver

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