Disk space availability wrong after net-snmp update.

[Andrea Venturoli]

Hello.

After the latest upgrade of net-snmp (5.7), Cacti displays wrong values 
for available space (partition size is still correct).

This happens on different machines of mine with different arch and 
version; I also heard other users having similar problems.

Where do I start debugging this? I'm willing to provide any additional 
info or do testings.



As a sample, I'm pasting an snmpwalk output:

> HOST-RESOURCES-MIB::hrStorageDescr.31 = STRING: /
> HOST-RESOURCES-MIB::hrStorageDescr.32 = STRING: /dev
> HOST-RESOURCES-MIB::hrStorageDescr.33 = STRING: /usr
> HOST-RESOURCES-MIB::hrStorageDescr.34 = STRING: /var
> HOST-RESOURCES-MIB::hrStorageDescr.35 = STRING: /var/spool/imap
> HOST-RESOURCES-MIB::hrStorageDescr.36 = STRING: /data
> HOST-RESOURCES-MIB::hrStorageDescr.37 = STRING: /usr/local/local/backups
> HOST-RESOURCES-MIB::hrStorageDescr.38 = STRING: /var/named/dev
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.1 = INTEGER: 4096 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.2 = INTEGER: 4096 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.3 = INTEGER: 4096 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.6 = INTEGER: 1024 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.7 = INTEGER: 4096 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.8 = INTEGER: 4096 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.9 = INTEGER: 4096 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.10 = INTEGER: 4096 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.31 = INTEGER: 2048 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.32 = INTEGER: 512 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.33 = INTEGER: 2048 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.34 = INTEGER: 2048 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.35 = INTEGER: 2048 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.36 = INTEGER: 2048 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.37 = INTEGER: 2048 Bytes
> HOST-RESOURCES-MIB::hrStorageAllocationUnits.38 = INTEGER: 512 Bytes
> HOST-RESOURCES-MIB::hrStorageSize.1 = INTEGER: 1555292
> HOST-RESOURCES-MIB::hrStorageSize.2 = INTEGER: 265152
> HOST-RESOURCES-MIB::hrStorageSize.3 = INTEGER: 270855306
> HOST-RESOURCES-MIB::hrStorageSize.6 = INTEGER: 632736
> HOST-RESOURCES-MIB::hrStorageSize.7 = INTEGER: 910197
> HOST-RESOURCES-MIB::hrStorageSize.8 = INTEGER: 30447
> HOST-RESOURCES-MIB::hrStorageSize.9 = INTEGER: 9816
> HOST-RESOURCES-MIB::hrStorageSize.10 = INTEGER: 4718560
> HOST-RESOURCES-MIB::hrStorageSize.31 = INTEGER: 2029031
> HOST-RESOURCES-MIB::hrStorageSize.32 = INTEGER: 2
> HOST-RESOURCES-MIB::hrStorageSize.33 = INTEGER: 50777075
> HOST-RESOURCES-MIB::hrStorageSize.34 = INTEGER: 76165633
> HOST-RESOURCES-MIB::hrStorageSize.35 = INTEGER: 253894418
> HOST-RESOURCES-MIB::hrStorageSize.36 = INTEGER: 245000335
> HOST-RESOURCES-MIB::hrStorageSize.37 = INTEGER: 1419033458
> HOST-RESOURCES-MIB::hrStorageSize.38 = INTEGER: 2
> HOST-RESOURCES-MIB::hrStorageUsed.1 = INTEGER: 1490224
> HOST-RESOURCES-MIB::hrStorageUsed.2 = INTEGER: 23789
> HOST-RESOURCES-MIB::hrStorageUsed.3 = INTEGER: 268467208
> HOST-RESOURCES-MIB::hrStorageUsed.6 = INTEGER: 632032
> HOST-RESOURCES-MIB::hrStorageUsed.7 = INTEGER: 892281
> HOST-RESOURCES-MIB::hrStorageUsed.8 = INTEGER: 5989
> HOST-RESOURCES-MIB::hrStorageUsed.9 = INTEGER: 849
> HOST-RESOURCES-MIB::hrStorageUsed.10 = INTEGER: 342914
> HOST-RESOURCES-MIB::hrStorageUsed.31 = INTEGER: 1500391
> HOST-RESOURCES-MIB::hrStorageUsed.32 = INTEGER: 0
> HOST-RESOURCES-MIB::hrStorageUsed.33 = INTEGER: 28549631
> HOST-RESOURCES-MIB::hrStorageUsed.34 = INTEGER: 19350682
> HOST-RESOURCES-MIB::hrStorageUsed.35 = INTEGER: 158375045
> HOST-RESOURCES-MIB::hrStorageUsed.36 = INTEGER: 169490522
> HOST-RESOURCES-MIB::hrStorageUsed.37 = INTEGER: 751038225
> HOST-RESOURCES-MIB::hrStorageUsed.38 = INTEGER: 0

I'm confused on how to interpret hrStorageUsed values; they should 
correspond to:

> %df
> Filesystem         1K-blocks        Used      Avail Capacity  Mounted on
> /dev/mfid0s1a         4058062    1057280    2676138    28%    /
> devfs                       1          1          0   100%    /dev
> /dev/mfid0s1d       101554150   44454888   48974930    48%    /usr
> /dev/mfid0s1e       152331266  113629902   26514864    81%    /var
> /dev/mfid0s1f       507788836  191038746  276126984    41%    /var/spool/imap
> /dev/mfid0s1g       490000670  151019626  299780992    34%    /data
> /dev/stripe/backup 2838066916 1335990466 1275031098    51%    /usr/local/local/backups
> devfs                       1          1          0   100%    /var/named/dev

Are those figures wrong or is the problem elsewhere?



  bye & Thanks
	av.