zabbix-agent-addons/zabbix_scripts/disco_zfs

#!/usr/bin/perl -w

use strict;
use warnings;
use JSON;
use File::Which;

my $json;
@{$json->{data}} = ();
my $zpool = which('zpool');

if ($zpool){
  foreach (qx($zpool list -H -o name)){
    chomp;
    push @{$json->{data}}, { ZPOOL => $_ };
  }
}
print to_json($json);