Expanding Volume Possible Mistake

[Mike.E]

New FreeNAS user here but I do have Linux/UNIX experience.

I have a volume setup using raidz2. Originally I had 4 2TB drives configured. Recently I decided to put another two drives into my volume. I used the Volume Manager section to add my drives. I thought all was well, I saw an increase in drive space.

I went into Volume status and it looks like the two drives I added are configured as a stripe and not applied as raidz2.

Any ideas how I can fix this outside of backing up my data and starting from scratch?

Thanks,

Mike

 

[danb35]

Any ideas how I can fix this outside of backing up my data and starting from scratch?

None--back up the data, destroy the pool, rebuild it correctly, and restore. ZFS doesn't let you do what you were trying to do, as the manual explains.

 

[Mike.E]

I am assuming ZFS does allow for extending volumes. My problem was how I extended it, if so my bad. I already have data backed up and pretty easily recreate what I had implemented.

Thanks anyways,

Mike

 

[danb35]

I am assuming ZFS does allow for extending volumes.

It does, but not the way you were trying to do it--you can't turn a four-disk RAIDZ2 into a five-disk RAIDZ2*. You'd expand volumes by adding additional redundant vdevs.

* This capability is coming, but not available yet (or probably for a couple more years). See https://forums.freenas.org/index.php?threads/raidz-expansion-its-happening.58575/

 

[dlavigne]

We've also recently added code to prevent one from inadvertantly doing this: https://redmine.ixsystems.com/issues/26586.