OpenSM "port is down" logging too verbose

OpenSM "port is down" logging too verbose

[Roland Dreier]

Hi!

We have a setup where a system has an IB interface that is sort of
optional... ie it won't always be connected but we want the SM always
running and ready to bring up the ports if/when they are connected.

But in this case opensm logs stuff every 10 seconds:

Sep 28 13:41:57 PURE-B18 OpenSM[838]: SM port is down#012
Sep 28 13:41:57 PURE-B18 OpenSM[836]: SM port is down#012
Sep 28 13:42:07 PURE-B18 OpenSM[838]: SM port is down#012
Sep 28 13:42:07 PURE-B18 OpenSM[836]: SM port is down#012
Sep 28 13:42:17 PURE-B18 OpenSM[838]: SM port is down#012
Sep 28 13:42:17 PURE-B18 OpenSM[836]: SM port is down#012
Sep 28 13:42:27 PURE-B18 OpenSM[838]: SM port is down#012
Sep 28 13:42:27 PURE-B18 OpenSM[836]: SM port is down#012
Sep 28 13:42:37 PURE-B18 OpenSM[838]: SM port is down#012
Sep 28 13:42:37 PURE-B18 OpenSM[836]: SM port is down#012

which junks up the syslog quite a bit.  It appears this message is
emitted at level OSM_LOG_SYS so there's no way to turn it off at
runtime (or am I misunderstanding the logging code?).

In any case would it be reasonable to print this log message once and
then the next time we check the port, not print it again if the port
was down last time?

 - R.
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Re: OpenSM "port is down" logging too verbose

[Hal Rosenstock]

Hi Roland,

On 9/29/2011 1:18 PM, Roland Dreier wrote:
> Hi!
> 
> We have a setup where a system has an IB interface that is sort of
> optional... ie it won't always be connected but we want the SM always
> running and ready to bring up the ports if/when they are connected.
> 
> But in this case opensm logs stuff every 10 seconds:
> 
> Sep 28 13:41:57 PURE-B18 OpenSM[838]: SM port is down#012
> Sep 28 13:41:57 PURE-B18 OpenSM[836]: SM port is down#012
> Sep 28 13:42:07 PURE-B18 OpenSM[838]: SM port is down#012
> Sep 28 13:42:07 PURE-B18 OpenSM[836]: SM port is down#012
> Sep 28 13:42:17 PURE-B18 OpenSM[838]: SM port is down#012
> Sep 28 13:42:17 PURE-B18 OpenSM[836]: SM port is down#012
> Sep 28 13:42:27 PURE-B18 OpenSM[838]: SM port is down#012
> Sep 28 13:42:27 PURE-B18 OpenSM[836]: SM port is down#012
> Sep 28 13:42:37 PURE-B18 OpenSM[838]: SM port is down#012
> Sep 28 13:42:37 PURE-B18 OpenSM[836]: SM port is down#012
> 
> which junks up the syslog quite a bit.  It appears this message is
> emitted at level OSM_LOG_SYS so there's no way to turn it off at
> runtime (or am I misunderstanding the logging code?).
> 
> In any case would it be reasonable to print this log message once and
> then the next time we check the port, not print it again if the port
> was down last time?

Yes, that seems totally reasonable to me. Patch for this to follow shortly.

-- Hal

>  - R.
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