[openib-general] LID assignment policy of opensm

[Hal Rosenstock]

On Tue, 2006-02-28 at 23:42, Devesh Sharma wrote:
> 
> On 28 Feb 2006 13:36:27 -0500, Hal Rosenstock <halr at voltaire.com>
> wrote:
>         Hi Devesh,
>         
>         On Tue, 2006-02-28 at 11:12, Devesh Sharma wrote:
>         > Hi Hal Thanks for replying.
>         > This setisfies my needs if user can define his own guid to
>         lid
>         > mapping.
>         > whether in this file user can define his own guid to lid
>         mapping? 
>         
>         To my knowledge it's not used that way in general but that
>         could work if
>         consistent with the OpenSM LID policy (e.g. LMC, etc.).
> 
> consistent with the OpenSM LID policy means what? Is it that, That
> each GUID sholud have unique LID range?

Yes; also match the LMC (min/max LID), no duplicates/overlaps.
 
>         The format of the file is as follows:
>         
>         0x0008f10403960985 0x0007 0x0007
>         
>         0x0008f10400410015 0x0003 0x0003
>         
>         (e.g GUID, min LID, max LID so the above is for LMC 0 which is
>         the
>         default).
>         
>         -- Hal
>         
>         > Devesh
>         >
>         > On 28 Feb 2006 07:19:35 -0500, Hal Rosenstock <
>         halr at voltaire.com>
>         > wrote:
>         >         Hi Devesh,
>         >
>         >         On Tue, 2006-02-28 at 01:44, Devesh Sharma wrote:
>         >         > Hi list,
>         >         > Please anybody brife me about the LID assignment
>         policy used 
>         >         by opensm
>         >         > subnet manager. Can user specify fixed LID
>         mappings using a
>         >         file?
>         >
>         >         There is a file it creates with these in it so they
>         can be
>         >         reused 
>         >         subsequently. It is /var/cache/osm/guid2lid.
>         >
>         >         opensm -h has the following option:
>         >         -c
>         >         --cache-options
>         >                   Cache the given command line options into
>         the file
>         >                   /var/cache/osm/opensm.opts for use next
>         invocation
>         >                   The cache directory can be changed by the
>         >         environment
>         >                   variable OSM_CACHE_DIR
>         >
>         >         Is that suitable for your needs ?
>         >
>         >         -- Hal
>         >         >
>         >         >
>         >        
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