Undo adding a disk

[Nik Valiris]

I wondered if someone could help. I've made a rookie mistake being in a hurry typically and added a 3TB drive via the GUI to a pool which was actually meant to be part of a RAIDZ. I seem to have added it as a non resilient disk (not part of a RAIDZ or Mirror) resized the pool and of course now I can't undo it, I can't offline it or anything else. I get the usual error "cannot offline gptid/38b24fdb-d3c7-11e4-86ee-08606e6c8ccf: no valid replicas"

See attached pic and its disk "gptid/38b24fdb-d3c7-11e4-86ee-08606e6c8ccf".

Is there any way to either remove it?

 

[jkh]

Yeah, you'll have to destroy the pool and start over. That's one of the things that just can't be undone. You got a warning when you tried to do this, right? The storage UI is smart enough to yell at you in this case.

 

[Tywin]

I wondered if someone could help. I've made a rookie mistake being in a hurry typically and added a 3TB drive via the GUI to a pool which was actually meant to be part of a RAIDZ. I seem to have added it as a non resilient disk (not part of a RAIDZ or Mirror) resized the pool and of course now I can't undo it, I can't offline it or anything else.

What @jkh said. Also, unless you were trying to add it along with a number of other 3 TB drives as a new RAIDZn vdev, note that you cannot add a new disk (except as a replacement for an old one) to a vdev, or change the RAIDZn level of an existing vdev.

 

[Nik Valiris]

thanks guys much appreciated. I thought I could add a new disk to an existing vdev so I've learned something as well ;-) Okay so I guess another option other than trashing my array is to get another 3tb disk and attach it and make it a mirror and keep some resiliency.

 

[david kennedy]

Did you create some of these via the cli?

Free as has some expectations of what should be on the disks and that the GUI is used.