re-adding a replacement into a pool of mirrors

[Andrew Snow]

Randy Bush wrote:
>>> # zpool attach tank da0s3 da1s3
>>> cannot attach da1s3 to da0s3: permission denied
>> What about attach -f ?
> 
> # zpool attach -f tank da0s3 da1s3
> cannot attach da1s3 to da0s3: permission denied

I think this stage should be working, unless something else in the 
system is already using da1s3 or has it opened.  Can you check through 
your system to see if any other parts of eg. geom have decided to take 
da1s3 for their purposes?