On Fri, Jul 26, 2013 at 12:38:29PM +1000, Russell Coker wrote:
> The scrub has completed and I now get the following output.  It seems
> that the status has been cleared so if it wasn't for the kernel
> messages I wouldn't know which disk had the problem.

that suggests to me that there is nothing wrong with the drive - if
anything is going to stress a drive with problems, a 10+ hour 'zfs
scrub' will do it. 

the drive was probably in standby mode and took too long to wake up
and respond, causing the kernel to complain. or possibly a dodgy power
connector or an underpowered PSU or similar.

i've seen the standby/sleep phantom problem happen with several drives
over the years - even replaced a few until i figured out what was going
on (i've since re-used those drives with no problems).

> I haven't run any "clear" command, so zfs decided by itself to remove
> the data.

no, zfs didn't SEE any problem. when it accessed the drive, there were
no errors. I interpret this as very strong evidence that there is
nothing wrong with the drive.

if it had seen any errors, they'd be in the error counts in the zfs
status report.

craig

-- 
craig sanders <[email protected]>
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