Remove disk from mirrored vdev?

[Gwindor]

Hi,
I have 1 zpool with 1 vdev having 2 HDDs in mirror configuration.
My question is, how can I remove the mirror configuration (I'm running out of space and decided I really do not need the mirror redundancy), with data preserved?
Basically I think a disk should be removed from the existing vdev and added to a new vdev, which should then be added to the existing zpool, but I'm completely new to this so not sure I would experiment without asking first.

Thanks.

[misterredman]

The command to remove a disk from a mirror is the following:

Code: Select all

zpool detach POOLNAME DISKNAME

The pool will remain online.

You may have to erase the disk you removed before adding it back.

Then you can add it to the pool with:

Code: Select all

zpool add POOLNAME NEWDISKNAME

reference: http://docs.oracle.com/cd/E19253-01/819 ... index.html

Important: in NAS4Free you have this commands in the webgui, under Disks|ZFS|Pools|Tools.

[Gwindor]

Thanks!

It worked, first I created a new zpool just to see in what state is the detached drive. It was empty. It seems detaching wipes out the drive.
So it was no problem to add it back to the original zpool.