ZFS and zpool mistake

[Karolis Eigelis]

if you want a mirror you need to do "attach" a new disk :)

On Mon, Oct 8, 2012 at 5:29 PM, Matthias Fechner <idefix at fechner.net> wrote:

> Dear list,
>
> I installed a freebsd with freebsd on a zfs root and only one disk:
>   pool: zroot
>  state: ONLINE
>   scan: none requested
> config:
>
>         NAME         STATE     READ WRITE CKSUM
>         zroot        ONLINE       0     0     0
>           ada0p3     ONLINE       0     0     0
>
> This disk was now insterted into the computer and boots fine.
> The next step I wanted was to setup a mirror with a second disk.
>
> So I inserted a second disk, configured everything with gpart and added
> the disk to the zroot with:
> zpool add zroot gpt/disk1
> (I think I had to execute zpool add zroot mirror gpt/disk1, this is not
> clear from the man page)
>
> And now I have a problem, it seems not to be a mirror but a stripe:
>         NAME         STATE     READ WRITE CKSUM
>         zroot        ONLINE       0     0     0
>           ada0p3     ONLINE       0     0     0
>           gpt/disk1  ONLINE       0     0     0
>
> Is there any chance to get it into a mirror?
>
> I don't think there was anything written to the second disk but I cannot
> remove it anymore.
>
> Has anyone a tip for me, howto convert the stripe to a mirror?
>
> Thanks,
> Matthias
>
> --
> "Programming today is a race between software engineers striving to
> build bigger and better idiot-proof programs, and the universe trying to
> produce bigger and better idiots. So far, the universe is winning." --
> Rich Cook
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