[ofa-general] question about partitioning IB networks

[Hal Rosenstock]

On Thu, Sep 3, 2009 at 9:43 AM, Yevgeny Kliteynik <
kliteyn at dev.mellanox.co.il> wrote:

> Hal Rosenstock wrote:
>
>>
>>  On Mon, Aug 31, 2009 at 3:29 PM, Meyer, Donald J <
>> donald.j.meyer at intel.com <mailto:donald.j.meyer at intel.com>> wrote:
>> ...
>> ...
>>    Just as a sanity check, my interpretation so far is that my network
>>    should have a partition configuration file similar to the following.
>>     Can anyone tell me if I have this correct?  In this example
>>    configuration, I am trying to create two partitions.  One with rack
>>    one and two, the other with rack three and four:
>>
>>
>>    #Default partition (for SM control of the CA’s)
>>
>>    Default=0x7fff,ipoib,rate=7:ALL=limited;
>>
>> Default=0x7fff,ipoib,rate=7:ALL,SELF=full;
>>
>>    #rack1
>>
>>    rack1=0x111,ipoib,rate=7,defmember=full:<GUID_list>;
>>
>>    #rack2
>>
>>    rack2=0x111,ipoib,rate=7,defmember=full:<GUID_list>;
>>
>>    #rack3
>>
>>    rack3=0x112,ipoib,rate=7,defmember=full:<GUID_list>;
>>
>>    #rack4
>>
>>    rack4=0x112,ipoib,rate=7,defmember=full:<GUID_list>;
>>
>> I've never done it this way but it does look like the partition create
>> code will detect the duplicated partitions (0x111 and 0x112) and merge ports
>> from rack2 with rack1 and rack4 with rack3.
>>
>
> It will.
> Note that partition names are meaningless in terms of IB management.
> Basically they are used just for logging. The only real partition ID
> is its pkey.
>

The low 7 bits (without membership bit) of pkey denotes partition.

-- Hal


>
> -- Yevgeny
>
>  -- Hal
>>
>>
>>    *Thanks,*
>>
>>    *Don Meyer*
>>
>>    /Senior Network/System Engineer/Programmer/
>>
>>    US+ (253) 371-9532 iNet 8-371-9532
>>
>>    /*Other names and brands may be claimed as the property of others/
>>
>>
>>
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