zfs discuss - Mar 2008 - [storage-discuss] Migrating from mirror to raidz

On Mon, Mar 17, 2008 at 4:47 AM, Patrick Schlaepfer
<patrick at schlaepfer.com> wrote:
> Is it possible to migrate a zpool mirror to
>  a zpool raidz?
>
>  Right now I do have two disk mirrored. So,
>  can I add a thrid and migrate this pool to
>  a raidz pool, or do I have to backup all the
>  data in the mirror, destroy the old pool,
>  creating the raidz pool, and restoring the data?
Patrick,

(This is probably more appropriate on the zfs-discuss list which I have copied.)

I know of no way to simply add the third disk and migrate from a
mirror to a raidz, but I''m sure someone will correct me if I''m
wrong.
I would plan on implementing your second alternative which is to
backup, destroy and recreate the pool, and then restore.

Regards,
-Eric