Good morning,

We recently noticed that SNMP is having difficulty handling large file sysystem. We have a 120TB XFS system that is reporting on 4.4TB and alerting because SNMP is reporting the wrong values.

snmpwalk -mALL -v2c -{COM} {HOST} hrStorageTable | grep 40

HOST-RESOURCES-MIB::hrStorageIndex.40 = INTEGER: 40

HOST-RESOURCES-MIB::hrStorageType.40 = OID: HOST-RESOURCES-TYPES::hrStorageFixedDisk

HOST-RESOURCES-MIB::hrStorageDescr.40 = STRING: /home

HOST-RESOURCES-MIB::hrStorageAllocationUnits.40 = INTEGER: 4096 Bytes

HOST-RESOURCES-MIB::hrStorageSize.40 = INTEGER: 1186465536

HOST-RESOURCES-MIB::hrStorageUsed.40 = INTEGER: 1036605829

HOST-RESOURCES-MIB::hrStorageUsed.44 = INTEGER: 666446640

Some forums have indicated this can be resolved by upgrading to 64 bit integers but I am not an SNMP expert.

Has anyone seen this behavior and if so how do we work around it? In the HPC world this is a small name space so I worry about monitoring storage on our Lustre FS.

Thanks

Rhian Resnick

Assistant Director Middleware and HPC

Office of Information Technology

Florida Atlantic University

777 Glades Road, CM22, Rm 218

Boca Raton, FL 33431

Phone 561.297.2647

Fax 561.297.0222