# Disk I/O Monitoring

# Description: Read operations on hdX
# X can be from 1 to 8
# you'll have to create a custom template if
# you want to support more than 8 drives
# You can also monitor raid devices (/dev/md1 for example)

# Type: Agent or Agent (active)
# Key: vfs.dev.read.hdX vfs.dev.write.hdX
# Type of information: Numeric (Float or integer 64bit)
# Units: bytes/sec
# Use multiplier: 512
# Update interval: 60 (for example)
# Store Value: Delta (speed/sec)
# Show Value: As is

# For these UserParameter to work, you need to configure the drives you want to monitor
# in the DB:
# db configuration setprop zabbix-agent HardDrives /dev/sda,/dev/sdb,/dev/sdc,/dev/sdd
# signal-event zabbix-agent-update

{

my @hd = split( /[,;]/,( ${'zabbix-agent'}{'HardDrives'} || '' ));

my $cnt = 1;
foreach my $drive (@hd){
    if ( -e $drive){
        $drive =~ s|/dev/||;
        $OUT .= "Alias=vfs.dev.read.hd" . $cnt . ":vfs.dev.read[$drive,sectors]\n";
        $OUT .= "Alias=vfs.dev.write.hd" . $cnt . ":vfs.dev.write[$drive,sectors]\n";
        $cnt++;
    }
}
for (;$cnt < 9; $cnt++){
        $OUT .= "UserParameter=vfs.dev.read.hd" . $cnt . ",echo '0'\n";
        $OUT .= "UserParameter=vfs.dev.write.hd" . $cnt . ",echo '0'\n";
}

}