On Mon, 2011-01-24 at 13:56 -0800, Phillip V wrote:
> Hey all,
> 
> I have a 10 TB root pool setup like so:
>   pool: s78
>  state: ONLINE
>  scrub: resilver completed after 2h0m with 0 errors on Wed Jan 19 22:04:39 
> 2011
> config:
> 
>         NAME         STATE     READ WRITE CKSUM
>         s78          ONLINE       0     0     0
>           mirror     ONLINE       0     0     0
>             c14t0d0  ONLINE       0     0     0
>             c7t0d0   ONLINE       0     0     0
>           mirror     ONLINE       0     0     0
>             c7t1d0   ONLINE       0     0     0
>             c14t1d0  ONLINE       0     0     0
>           mirror     ONLINE       0     0     0
>             c7t2d0   ONLINE       0     0     0
>             c14t2d0  ONLINE       0     0     0
>           mirror     ONLINE       0     0     0
>             c7t3d0   ONLINE       0     0     0
>             c14t3d0  ONLINE       0     0     0
>           mirror     ONLINE       0     0     0
>             c7t4d0   ONLINE       0     0     0
>             c15t6d0  ONLINE       0     0     0
>           mirror     ONLINE       0     0     0
>             c7t5d0   ONLINE       0     0     0
>             c14t5d0  ONLINE       0     0     0
>           mirror     ONLINE       0     0     0
>             c7t6d0   ONLINE       0     0     0
>             c14t6d0  ONLINE       0     0     0
>           mirror     ONLINE       0     0     0
>             c7t7d0   ONLINE       0     0     0
>             c14t7d0  ONLINE       0     0     0
>           mirror     ONLINE       0     0     0
>             c15t7d0  ONLINE       0     0     0
>             c14t4d0  ONLINE       0     0 1.11M  251G resilvered
>         logs         ONLINE       0     0     0
>           c15t2d0    ONLINE       0     0     0
>         spares
>           c15t0d0    AVAIL   
> 
> errors: No known data errors
> 
> Only 2 TB of the pool are used and I would like to remove one mirror set from 
> the pool and use the two drives in that mirror set as hot spares (for a total 
> of 3 hotspares). Is this possible?


No. You cannot shrink the size of a pool, regardless of what type of
vdev it is composed of.


-- 
Erik Trimble
Java System Support
Mailstop:  usca22-317
Phone:  x67195
Santa Clara, CA
Timezone: US/Pacific (GMT-0800)

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