NetApp 2.4TB volume

pbulteel · Post by **pbulteel** » Fri Nov 10, 2006 11:06 am

Well, I get the same thing if I use -v 2c, so I'm not sure if I've configured my snmpd correctly. I'm going to check it.

pbulteel · Post by **pbulteel** » Fri Nov 10, 2006 11:11 am

Bad news I guess -- it get the same results using SNMPv2 :(

pbulteel · Post by **pbulteel** » Fri Nov 10, 2006 11:28 am

I found this.

http://groups.google.co.uk/group/mailin ... 9ffdde1db0

Hmmm...

Post by **rony** » Fri Nov 10, 2006 11:34 am

Can each of you email me a walk of the devices in question and give me some background on what they are?

brunom · Post by **brunom** » Mon Nov 13, 2006 2:48 am

We started using hrStorageUsed (available in the standard template from Cacti under "SNMP - Get Mounted Partitions" in the data queries for a "ucd/Net SNMP host").

It works for larger filesystems however it's overflowing for our 12TB volume. I am trying to figure out how to work around that as we will rolling out 24TB volumes very soon and even a 44TB one too

fmangeant · Post by **fmangeant** » Mon Nov 13, 2006 3:53 am

brunom wrote:We started using hrStorageUsed (available in the standard template from Cacti under "SNMP - Get Mounted Partitions" in the data queries for a "ucd/Net SNMP host").

It works for larger filesystems however it's overflowing for our 12TB volume. I am trying to figure out how to work around that as we will rolling out 24TB volumes very soon and even a 44TB one too

Hi

I've tried the "SNMP - Get Mounted Partitions", but it doesn't work for me.

I'm trying this on a "NetApp Release 6.5.2R1P16D6: Fri Nov 26 21:10:07 PST 2004". Can you tell me which release you're running ?

brunom · Post by **brunom** » Mon Nov 13, 2006 10:46 pm

Hello,

Maybe I should have clarified that I was using that on Linux (not NetApp). To make sure that you have the hrStorage table available you can do:

snmpwalk -v SNMPVERSION -c COMMUNITYNAME HOST hrStorage

where SNMPVERSION is the version you are using, COMMUNITYNAME is whatever name you gave it, HOST ... well, that's descriptive enough.

In my case I get (partial reproduction):

HOST-RESOURCES-MIB::hrMemorySize.0 = INTEGER: 2075484 KBytes
HOST-RESOURCES-MIB::hrStorageIndex.1 = INTEGER: 1
HOST-RESOURCES-MIB::hrStorageIndex.2 = INTEGER: 2
HOST-RESOURCES-MIB::hrStorageIndex.3 = INTEGER: 3
HOST-RESOURCES-MIB::hrStorageIndex.4 = INTEGER: 4
HOST-RESOURCES-MIB::hrStorageIndex.5 = INTEGER: 5
[...]

pbulteel · Post by **pbulteel** » Fri Nov 17, 2006 11:59 am

Thanks this worked for me as well - again this was a Linux system with 6.6 T filesystem. I can see it! Woohoo...

-P

Post by **gandalf** » Sun Nov 19, 2006 7:43 am

Find a template for this reading the first link of my signature ...
Reinhard

birger · Post by **birger** » Tue Jan 30, 2007 4:18 am

I am also having problems with this.

snmpget -v 1 on my biggest aggregate (2.7TB) returns a negative number.
snmpget -v 2c to the netapp times out.

snmpget -c public -v 1 netapp .1.3.6.1.4.1.789.1.5.4.1.3.1
SNMPv2-SMI::enterprises.789.1.5.4.1.3.1 = INTEGER: -1318648000

rrdtool info says:
ds[dfKBytesTotal].type = "GAUGE"
ds[dfKBytesTotal].minimal_heartbeat = 600
ds[dfKBytesTotal].min = 0.0000000000e+00
ds[dfKBytesTotal].max = NaN
ds[dfKBytesTotal].last_ds = "UNKN"
ds[dfKBytesTotal].value = NaN
ds[dfKBytesTotal].unknown_sec = 4

I have read the NaN tutorial, but I cannot see what to do. As you may guess I am a cacti newbie.

birger · Post by **birger** » Tue Jan 30, 2007 7:36 am

Ok... I think I solved it.

I set the min values to 'U' for the rrd's in question and then added 2 new CDEF's:

"convert 32bit signed to unsigned"
cdef=CURRENT_DATA_SOURCE,0,GE,CURRENT_DATA_SOURCE,4294967295,CURRENT_DATA_SOURCE,+,IF

"convert 32bit signed to unsigned, multiply by 1024"
Build on the brevious one, and multiply by 1024.

I then applied the last one to all data in the 'netapp space detail' graph template.

duckhead · Post by **duckhead** » Wed Jan 31, 2007 2:08 pm

NetApp's are a PITA when it comes to SNMP. They steadfastly refuse to support anything other than SNMPv1. V1 only goes as high as a 32-bit integer, and overflows around 4 TB. So, as a workaround, they supply some OID's in their MIB that let you query the space. You have to read 2 MIB values in their custom MIB, and do some math.

You can read more about it here:

http://now.netapp.com/NOW/cgi-bin/bol?T ... play=80268

The math you need is:

Code: Select all

Total = High * ((dfLowBytes < 0) + 1) * 2^32 + Low

Laffer · Post by **Laffer** » Wed Sep 05, 2007 2:32 am

Here I have done the work with the CDEF's, but the Total Size is still wrong! Anybody suggestions?

Laffer · Post by **Laffer** » Wed Sep 05, 2007 2:33 am

and the associated data template (with negative numbers in the RRA)

NivenHuH · Post by **NivenHuH** » Wed Nov 28, 2007 8:31 pm

birger,

thanks for the workaround... it worked for me. (until i hit 4tb..

)

Cacti

NetApp 2.4TB volume

Using hrStorageUsed instead seems to work up to 12TB

Re: Using hrStorageUsed instead seems to work up to 12TB

hrStorageUsed

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