zabbix-agent-addons/zabbix_scripts/disco_block_devices

#!/usr/bin/perl -w

use warnings;
use strict;
use Zabbix::Agent::Addons::Disks;
use JSON;

my $json;
@{$json->{data}} = ();
foreach my $block (Zabbix::Agent::Addons::Disks::list_block_dev()){
  my $size = 1;
  if ( -e "/sys/block/$block/size"){
    open SIZE, "/sys/block/$block/size";
    $size = join "", <SIZE>;
    close SIZE;
    chomp($size);
  }
  push @{$json->{data}}, { "{#BLOCKDEVICE}" => $block, "{#BLOCKSIZE}" => $size };
}
print to_json($json);
exit(0);