Adding drive to ZFS pool failure

[Tauq]

I'm trying to add a new drive to my existing ZFS pool, and I don't know what's wrong.
Any suggestions?

 

[Jailer]

You're getting that warning because you are adding a vdev consisting of a single drive to your pool and introducing a single point of failure that will take out your entire pool if it fails. It's possible to continue and add it but not advisable or prudent.

 

[danb35]

He probably doesn't have any redundancy anyway. If he did, the warning would look more like, "You are trying to add a virtual device of type 'stripe' in a pool that has a virtual device of type 'mirror'". He (most likely) has a two-disk stripe, and is trying to add a third disk to it. The warning isn't too helpful in this case.

@Tauq, to add the third disk you'll need to use the Manual Setup button. On that screen, select your pool under the "Volume to extend" dropdown, select the new disk, then click the Add Volume button. But before doing that, to confirm I understand your pool configuration correctly, post a screen shot of the volume status screen. To get it, click on your volume (the first listing for MyDrives, not the second one), and then the volume status button at the bottom of the screen (it looks like a blank sheet of notebook paper).