The hardware-based implementation of the UCD disk table
(ucd-snmp/disk_hw) in v5.6 and above can suffer from
arithmetic overflow when calculating percentage usage
on large disks.
The following simple patch should address this problem:
--- a/agent/mibgroup/ucd-snmp/disk_hw.c
+++ b/agent/mibgroup/ucd-snmp/disk_hw.c
@@ -248,7 +248,7 @@ static int _percent( unsigned long long value,
unsigned long long total ) {
/* avoid division by zero */
if (total == 0)
return 0;
- return (int)( value * 100 / total );
+ return (int)( value / (total/100) );
}
static netsnmp_fsys_info **
I'd like to see this included in 5.7.1
Votes please....
Dave
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