#!/usr/bin/python

import yaml
import commands as cmd

def __run__(params):
    mtu = 9000
    timeout = 3
    result = []
    has_error = False
    try:
        nfs = []
        for linha in open('/etc/mtab').readlines():
            if linha[0] != "/" and linha.find("nfs") != -1 and linha.find(":") != -1:
                nfs.append(linha.split(":")[0])
    
        if len(nfs) == 0:
            check_return(True, "no NFS mount found")
            return
    
        for storage in nfs:
                    status, output = cmd.getstatusoutput( "ping -w %d -c 1 -s %d %s" % (timeout,mtu,storage))
                    if status != 0:
                        result.append(storage)
                        has_error = True
        if has_error is False:
            return [0, "Check_MTU status=0 OK - %s" % storage]
        elif status == 2:
            return [1, "Check_MTU status=1 WARNING - %s, check ping permissions" % storage]
        else :
            return [2, "Check_MTU status=2 CRITICAL - %s" % " ".join(result)]
    except Exception, e:
        return [2, "Unable to calc => %s" % repr(e)]