How to destroy a ZFS pool while the pool is busy?
<p>I have zfs pool:</p>

<pre><code>$ sudo zpool status lxd
  pool: lxd
 state: ONLINE
  scan: none requested
config:

    NAME                    STATE     READ WRITE CKSUM
    lxd                     ONLINE       0     0     0
      /var/lib/lxd/zfs.img  ONLINE       0     0     0
</code></pre>

<p>I've tried: </p>

<pre><code>$ sudo zpool destroy -f lxd 
cannot destroy 'lxd': pool is busy
</code></pre>

<p>How can I unmount zpool img</p>