Re: HOST-RESOURCES-MIB::hrDeviceStatus

Bruce,

I was not talking about rewriting the MIB but rewriting the agent so that
the agent could server SMART information instead of the NOTHING that it
serves for linux disks and raid controllers

- Muni


On 6/14/07, Bruce Shaw <[email protected]> wrote:
>
> Unfortunately we are constrained by the MIB which only allows us to
> report the statuses below.
>
> It is implemented for CPU's on solaris.
>
> # /usr/local/bin/snmpwalk -v 2c -c public -m ALL localhost
> hrDeviceStatus
> HOST-RESOURCES-MIB::hrDeviceStatus.768 = INTEGER: running(2)
> HOST-RESOURCES-MIB::hrDeviceStatus.769 = INTEGER: running(2)
> HOST-RESOURCES-MIB::hrDeviceStatus.770 = INTEGER: running(2)
>
> Referring to the mib
> (http://net-snmp.sourceforge.net/docs/mibs/HOST-RESOURCES-MIB.txt)
>
> Disk is normally reported as hrStorage rather than hrDevice, however one
> of the hrDevice types is hrDiskStorage so you certainly would have the
> opportunity report a status, such as it is.
>
> You would need to decide how you're going to translate what you get from
> SMART into those values below.
>
> Sorry, you can't rewrite the MIB - it's cast in stone.
>
> >Original meesage below
>
> #############################
> Hi Folks,
>
> After doing some research and looking through the net-snmp
> agent/mibgroup/host code it seems that the net-snmp agent does not
> report device status information.
>
> hrDeviceStatus OBJECT-TYPE
>       SYNTAX     INTEGER {
>                      unknown(1),
>                      running(2),
>                      warning(3),
>                      testing(4),
>                      down(5)
>
> I am planning on implementing the code to
> 1.) Report the Disk Status. My current thought is to do this through API
> Calls to get the S.M.A.R.T status. This would display the Disk Status of
> SCSI and IDE drives.
> 2.) Report the RAID (Software Raid) status by parsing the mdstat output.
>
> My questions are
>
> 1.) Should I just modify hr_devices.c to invoke my library calls so that
> this function is compiled into net-snmp agent. Obvious disadvantage is
> creating patches that would need to be propped on each release upgrade.
> 2.) Create a Shared Library to be run using the dlmod entry in
> snmpd.conf. I don't know that this is even possible considering that the
> agent already serves the table hrDeviceTable that the hrDeviceStatus is
> a part of.
>
> Any guidance towards the implementation direction would be appreciated.
>
>
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