How To Expand A ZFS Pool – DBurkland.com

This article explains how to expand a ZFS Pool. I have used this procedure a few times while dealing with FreeBSD in a virtual environment where I have needed to expand a zpool.

Enable the “autoexpand” feature on the zpool
```
zpool set autoexpand=on zfstestpool
```
Shutdown the system
```
shutdown -h now
```
Resize the gpt partition
```
gpart resize -i 1 /dev/da1
```
Export the zpool
```
zpool export zfstestpool
```
Import the zpool
```
zpool import zfstestpool
```
“Online” the zpool which will automatically expand it to partition boundaries
```
zpool online zfstestpool /dev/da1p1
```
“df -hl /mountpoint” should now show that the zpool has been expanded