OpenZFS on OS X

Hi, a very simple question. I had a RAIDZ1 pool made of 4x6TB drives. I have replaced each of those with an 8TB (i.e.: 4x8TB). However the pool is still acting as if I have 4x6TB, even though I've exported the pool and reimported it. Have I missed a step? (Using 1.6.1 on 10.11.6, if it makes a difference). Apologies, but it's one of those questions I thought was in the documentation but doesn't appear to be there.

OK, I found these instructions buried in another post:

lundman wrote:zpool export POOLNAME
zpool import -d /dev POOLNAME
zpool online -e POOLNAME /dev/diskX
<confirm expansion>
zpool export POOLNAME
zpool import -d /var/run/dsk/by-id POOLNAME # was that the path?

lundman, ilovezfs, someone else with wiki edit privs: can you PLEASE add this to the documentation section? This is clearly OS X-specific.

If it's any help, I only needed to do a:

Code: Select all

zpool set autoexpand=on {poolname}

before adding the new drive(s) and running a zpool replace. It automatically picked up the new space once both drives in the vdev were replaced.

jwilliams108 wrote:If it's any help, I only needed to do a:

Code: Select all

zpool set autoexpand=on {poolname}

before adding the new drive(s) and running a zpool replace. It automatically picked up the new space once both drives in the vdev were replaced.

I'm not adding new drives; I'm replacing old drives. That autoexpand only seems to work when you're expanding the pool with new drives. Otherwise it doesn't seem to work. When I expanded one pool from 4x3TB to 5x3TB, it worked exactly as advertised.

At any rate, both pools had autoexpand=on. It didn't work. There's something borked about it.

i just replaced two mirror vdevs with larger disks and auto expand worked.

i'm tuning 1.6.2 and el capitan