[openib-general] Re: [RFC] OpenSM Interactive Console

[Hal Rosenstock]

On Wed, 2005-10-19 at 12:28, Eitan Zahavi wrote:
> Hal Rosenstock wrote:
> > On Tue, 2005-10-18 at 17:11, Eitan Zahavi wrote:
> > 
> >>Hal Rosenstock wrote:
> >>
> >>>Currently, OpenSM does not support an interactive console. There has
> >>>been a desire to introduce the ability to change certain parameters
> > 
> > (as
> > 
> >>>well as display things) once OpenSM has started. This patch
> > 
> > introduces
> > 
> >>>the first most basic commands: help and loglevel. I am investgating
> >>>adding smpriority to this. The console is invoked by specifying
> > 
> > -console
> > 
> >>>as an option on the opensm command line.
> >>>
> >>>If you have a request for a command you would like in the console, I
> >>>would like to compile a list of these. 
> >>>
> >>>Comments ?
> >>
> >>OpenSM gen1 has a nice TCL API (named osmsh) that lets you do all that
> > 
> > 
> >>and much more.
> >>Setting ALL options is supported.
> >>It also provides a Tcl access to the SM Database so you can write your
> > 
> > own 
> > 
> >>reports on FDB/MC-FDB etc.
> >>Interactive control on the discovery and fabric settings sequence
> > 
> > allows 
> > 
> >>"single stepping" too.
> > 
> > 
> > IMO osmsh is more a debugger's tool. It relies on OpenSM globals and
> > internal SM data structures rather than well defined APIs which might
> > isolate the user from changes. (It exposes the internals of the SM and
> > SM modifications may cause scripts using osmsh) to stop working, and
> > worse than that, osmsh scripts may cause serious SM bugs.
> What is unsafe in running the following basic code?
> osm_opts configure -log_file $log_file_name.
> osm_init
> osm_bind $guid
> osm_sweep
> osm_set_verbosity 0xffff

Are you saying there is no use of globals and internal SM data
structures by osmsh or just for that particular flow ?
 
> > I think there is a place for a "safer" console. Perhaps there are levels
> > of access privileges where some can do RO things and others have RW
> > access.
> How would this privilege right be granted?

Based on user and/or perhaps group.
 
> >>The OpenSM user manual provides extensive description of it, 
> >>including some programming examples.
> > 
> > 
> > What OpenSM documentation ? I didn't see any with the 1.8.0 release.
> It is in the 1.7.1 1.7.0 manuals too.

How do you get the old versions of this ?

> >>Porting of osmsh to gen2 should be very simple.
> > 
> > 
> > Is someone working on doing this ?
> No - but if needed we can do that.
> > 
> > 
> >>I do not see why we need to invent yet another way to do these things.
> >>Instead I would recommend including osm Tcl extension in the gen2
> > 
> > trunk 
> > 
> >>and put it to work.
> > 
> > 
> > -- Hal
> > 
>