[openib-general] [opensm] the default behavior of the openSM causes problems (configure the PKey table)

[Sasha Khapyorsky]

Hi Dotan,

On 14:36 Mon 14 Aug     , Dotan Barak wrote:
> Hi.
> 
> I noticed that the behavior of the openSM was changed in the latest driver:
> 
> in the past, every HCA was configured (by the FW) with 0xffff in the first entry.
> today, the PKey table is being configured by the openSM: the first entry 
> is being set to 0x7fff (except for the host that the SM is being executed from)

This is OpenSM default behavior in the case where partition policy file
exists (/etc/osm-partitions.conf is default name), even if it is empty.

When the partition policy file does not exist default 0xffff pkey value
(full membership) should be inserted for all end-ports.

I am not able to reproduce the reported behavior with my setup. If you
are please describe your scenario. Thanks.

Sasha

> This behavior is very problemtic because not all of the users would like 
> to change the default PKey table (for example: MPI users). 
> Users that will try to use OFED 1.1 (in the same way they used OFED 1.0) will 
> get unexplained failures, because the connectivity because the nodes will be broken.
> (even the perfquery started to fail after executing the SM)
> 
> 
> I think that the default behavior of the openSM should be: not to change the 
> PKey table, unless the user provided a PKey table policy file.


> 
> Here are the props of the machines
> 
> *************************************************************
> Host Architecture : x86_64
> Linux Distribution: Red Hat Enterprise Linux AS release 4 (Nahant Update 3)
> Kernel Version    : 2.6.9-34.ELsmp
> GCC Version       : gcc (GCC) 3.4.5 20051201 (Red Hat 3.4.5-2)
> Memory size       : 4039892 kB
> Driver Version    : gen2_linux-20060813-1905 (REV=8916)
> HCA ID(s)         : mthca0
> HCA model(s)      : 23108
> FW version(s)     : 3.4.927
> Board(s)          : MT_0030000001
> *************************************************************
> 
> 
> thanks
> Dotan
> 
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