Problem adding second mirror to zpool

[David J. Weller-Fahy]

* David J. Weller-Fahy <dave+lists.freebsd-questions at caterva.org> [2014-12-04 21:03 -0500]:
>#v+
>root at nastie:~ # zpool attach pool \
>	/dev/gptid/c6ede2a4-78a6-11e4-8646-0014222d98da \
>	/dev/gptid/fadbb43d-7aa2-11e4-8452-0014222d98da
>cannot attach /dev/gptid/fadbb43d-7aa2-11e4-8452-0014222d98da to \
>	/dev/gptid/c6ede2a4-78a6-11e4-8646-0014222d98da: no such device in pool
>#v-
>
>Can anyone tell me how to add the last drive (ada1) without losing the 
>data on the drive?

Apologies: I just re-read this, and it doesn't say what I thought it 
said.  To rephrase: Can anyone tell me how to add ada1p1 to the pool 
without losing the data that is on ada3p1 (which is already in the 
pool)?  I don't care about the data on ada1p1, because I just formatted 
the darn thing.

Regards,
-- 
dave [ please don't CC me ]
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