On 17 Jun 11, at 21:14 , Bob Friesenhahn wrote:

> On Fri, 17 Jun 2011, Jim Klimov wrote:
>> I gather that he is trying to expand his root pool, and you can
>> not add a vdev to one. Though, true, it might be possible to
>> create a second, data pool, in the partition. I am not sure if
>> zfs can make two pools in different partitions of the same
>> device though - underneath it still uses Solaris slices, and
>> I think those can be used on one partition. That was my
>> assumption for a long time, though never really tested.
> 
> This would be a bad assumption.  Zfs should not care and you are able to do 
> apparently silly things with it.  Sometimes allowing potentially silly things 
> is quite useful.
> 

This is true.  If one has mirrored disks, you could do something like I explain 
here WRT partitioning and resizing pools.

http://www.kamiogi.net/Kamiogi/Frame_Dragging/Entries/2009/5/19_Everything_in_Its_Place_-_Moving_and_Reorganizing_ZFS_Storage.html

I did some shuffling using Solaris partitions here on a home server, but it was 
using mirrors of the same geometry disks.

You might be able to o a similar shuffle using an external USB drive which was 
appropriately sized and turn on autoexpand.

Mike

---
Michael Sullivan                   
m...@axsh.us
http://www.axsh.us/
Phone: +1-662-259-8888
Mobile: +1-662-202-7716

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