zfs code - Jan 2008 - Break a ZFS mirror and concatenate the disks

We have a ZFS mirror setup of two 73GB''s disk, but we are running out
of space.  I want to break the mirror and join the disk to have a pool of 146GB,
and of course not lose the data doing this.  What are the commands?
To break the mirror I would do
 
zpool detach moodle c1t3d0
 
       NAME        STATE     READ WRITE CKSUM
        moodle      ONLINE       0     0     0
          mirror    ONLINE       0     0     0
            c1t2d0  ONLINE       0     0     0
            c1t3d0  ONLINE       0     0     0

Then could I do 
zpool add moodle c1t3d0

without losing the data?
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Kory Wheatley wrote:
> We have a ZFS mirror setup of two 73GB''s disk, but we are running
out of space.  I want to break the mirror and join the disk to have a pool of
146GB, and of course not lose the data doing this.  What are the commands?
> To break the mirror I would do
>  
> zpool detach moodle c1t3d0
>  
>        NAME        STATE     READ WRITE CKSUM
>         moodle      ONLINE       0     0     0
>           mirror    ONLINE       0     0     0
>             c1t2d0  ONLINE       0     0     0
>             c1t3d0  ONLINE       0     0     0
> 
> Then could I do 
> zpool add moodle c1t3d0
> 
> without losing the data?
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> This messages posted from opensolaris.org
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Kory,

You can do exactly what you suggested to stripe the data across your two 
drives without losing data. Obviously, if your data is critical to you, 
then you should consider investing in two additional drives so you can 
mirror them them later. It''s worth noting that once you go to a stripe 
you won''t be able to remove that stripe later.

BTW, you should send email to zfs-discuss at opensolaris.org if you need 
more assistance as there are more subscribers on that forum. This one 
devoted to the zfs code.

Thanks,
George

Currently c2t2d0 c2t3d0 are setup in a mirror.  I want to break the mirror and
save the data on c2t2d0 (which both drives are 73g.  Then I want to concatenate
c2t2do to c2t3d0 so I have a pool of 146GB no longer in a mirror just
concatenated.  But since their mirror right now I need the data save on one disk
so I don''t lose everything.  I don''t need to add new disks
that not an option I want to break the mirror so I can expand the disks together
in a pool but save the data.
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