[ net-snmp-Bugs-1743882 ] hrStorageSize overflow on large filesystems

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Bugs item #1743882, was opened at 2007-06-26 23:40
Message generated for change (Comment added) made by tanders
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Category: agent
Group: None
>Status: Closed
>Resolution: Duplicate
Priority: 5
Private: No
Submitted By: Ed Ravin (eravin)
Assigned to: Nobody/Anonymous (nobody)
Summary: hrStorageSize overflow on large filesystems

Initial Comment:
Platform is a Solaris 10 box with a very large filesystem:

# df -h /export
Filesystem             size   used  avail capacity  Mounted on
Export                 1.2T   3.8G   1.1T     1%    /export
# df -k /export
Filesystem            kbytes    used   avail capacity  Mounted on
Export               1261338624 4032640 1139000439     1%    /export

Agent is Net-SNMP 5.4.  A walk of hrStorage for this filesystem looks like
this:

HOST-RESOURCES-MIB::hrStorageIndex.36 = INTEGER: 36
HOST-RESOURCES-MIB::hrStorageType.36 = OID: HOST-RESOURCES-TYPES::hrStorageFixedDisk
HOST-RESOURCES-MIB::hrStorageDescr.36 = STRING: "/export"
HOST-RESOURCES-MIB::hrStorageAllocationUnits.36 = INTEGER: 512 Bytes
HOST-RESOURCES-MIB::hrStorageSize.36 = INTEGER: -2008937171
HOST-RESOURCES-MIB::hrStorageUsed.36 = INTEGER: 8065273
HOST-RESOURCES-MIB::hrStorageAllocationFailures.36 = Counter32: 0

What's with the negative numbers in hrStorageSize?  Wait a minute, the MIB
for hrStorageSize says:

     SYNTAX     Integer32 (0..2147483647)

and I'd expect the val to be: 2522677248 (size in kbytes * 2 = size in 512b blocks)

so this is an overflow of Integer32?  Why is disk size a signed value?

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>Comment By: Thomas Anders (tanders)
Date: 2007-06-26 23:46

Message:
Logged In: YES 
user_id=848638
Originator: NO

Dup of 1743171. Yet another accident?

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