[TriLUG] ZFS Mirroring Fix

[Joseph Mack NA3T via TriLUG]

On Thu, 14 Sep 2023, Jos Purvis wrote:

> Well, foo. I was initially hopeful, but `zpool list` shows that pool as 
> 10.9T, which is 2x the available drive capacity (6TiB disk -> 5.46TiB 
> usable -> 2x = 10.92TiB).


> Hm. I was just thinking of using the 8TB (which is larger than either of 
> the two pools I'm wrestling with) as a temporary holding platform — move 
> the data onto it, destroy the ZFS pool, rebuild the ZFS pool as a proper 
> mirror, then move the data back.

it's simple at least.

> The advantage to the method you're describing is that the new 'spare' 
> actually has a copy of the existing data on it; the disadvantage is that 
> I've got to buy two disks (one for each pool being rescued).

I was thinking that the disks were all the same size. You would be mixing 
6T and 8T disks.

> Worth a shot (and a look at the budget...). Thanks!

when I fill a disk, I go up 2x in size. I just went to a pair of 20TB 
disks and at the same time retired a bunch of 2T and 4T pairs. If you want 
the files you have to pay to store them.

Joe

-- 
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
Don't upgrade a working machine - it won't work any
better - it could work worse; it may not work at all.
Homepage http://www.austintek.com/ It's GNU/Linux!