Hard drive power cable dropped now lost capacity!

[pull10k]

HI, newbie to freenas, but 20 years pc experience.
I have a 4 drive 4 TB ZFS raid (1) setup. Worked perfectly. Showed 12 TB available . Due to stupity a power cable into 1 hard drive dropped off (while I was upstairs.)
When I saw the red light I checked and 1 of my drives was missing.
I shut down and replaced the power into the hard drive. After restarting it recognized it. But it auto re-silvered it completely successfully.
But The capacity of my total available for a volume went back to 12 but the Created volume didn't go up. it was 12 before the drop but now is 8 tb.
I have restarted and scrubbed but I don't know what to do... Help!

 

[kdragon75]

First we need the FULL DETAILS of your system. All specs and model numbers from the CPU to the case.
Second please provide numbered steps of everything you did. Every. Thing. from the moment you reconnect the drive and pressed the power button. Until we have that information DO NOT DO ANYTHING. With a RAIDz1 and one drive in a questionable state, any other miss steps can cause all data to be lost.

 

[pull10k]

Thanks:

It is Hand Built, I've built many hundreds of pc's and run networks. All my controllers are listed working per specs.

Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz
Z77 OC FORMULA (AsRock)
8 Gb Ram
4 Seagate 4TB IronWolf NAS SATA 6Gb/s NCQ 64MB (new, running 3 days.)
Running FreeNAS-11.1-U5

So I came down, the box was off.
I booted up and saw immediately that there was a drive missing.
I powered off from Console.
Checked all connections and found 1 hard drives power cable was off.
I reconnected it and restarted the Nas.
Immediately the console showed found hard drive and started silvering it by itself.
I only have 2 TB of DATA on it so it didn't take long.
It finished and showed Silvering finished and the "alert" went away.
I dragged a file from the server to my PC and it worked fine also vice versa.
I went into Storage to double check the work.
My "pool" shows 12 TB. Which showed 8.3 prior when the drive was missing.
But my Created volume is still showing 8.3 TB as before.
All my data is there.
I've just lost 4 tb on the storage volume.
I ran scrub and restarted.
That's when I stopped and here I am!
Here is a shot of what I am looking at.

 

[kdragon75]

Ok so all looks good its just the primary dataset in the pool is not reflecting the correct available space. I vaguely remember a bug about this. I'll have to let someone else chime in. Thank you for the detailed response!

 

[DrKK]

?

The gentleman has 4x4TB which is 14.55 TiB raw straight. When I add his two numbers, I get 14.5 TiB raw straight.

Each number on the next line should be 75% of the one above it since we're in RAID-Z., minus overhead.

And that's what they are.

What exactly is the problem here, @kdragon75 ?

 

[DrKK]

?

The gentleman has 4x4TB which is 14.55 TiB raw straight. When I add his two numbers, I get 14.5 TiB raw straight.

Each number on the next line should be 75% of the one above it since we're in RAID-Z., minus overhead.

And that's what they are.

What exactly is the problem here, @kdragon75 ?

I'm not ruling out that I'm making an idiot error here...? But it looks fine.

 

[kdragon75]

Still seems small. What's the output of gpart show?

 

[gpsguy]

i agree with @DrKK.

4x4TB RAIDz1 yields about 10.8TiB of storage. The OP is using 1.6TiB and has 8.6TiB free. The latter total = 10.2TiB. After FreeNAS's overhead, the numbers look fine.

I'm not ruling out that I'm making an idiot error here...? But it looks fine

@pull10k one thing to note, is that your drives are sold in TB and FreeNAS is using TiB. Your 4TB drive is ~3.6TiB in size.