On Apr 5, 2010, at 3:38 AM, Garrett D'Amore wrote:
> 
> Am I missing something here?  Under what conditions can I expect hot spares 
> to be recruited?

Hot spares are activated by the zfs-retire agent in response to a list.suspect 
event containing one of the following faults:

        fault.fs.zfs.vdev.io
        fault.fs.zfs.vdev.checksum
        fault.fs.zfs.device

The last of these (fault.fs.zfs.device) is what is diagnosed when a label is 
corrupted.  What software are you runnig?  Have you confirmed that you are 
getting one of these faults?  What does 'fmdump -V' show?  Does doing a 'zpool 
replace c2t3d1 c2t3d2' by hand succeed?

- Eric 

--
Eric Schrock, Fishworks                        http://blogs.sun.com/eschrock

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