[openib-general] re RDS missing features

[Michael Krause]

At 10:42 AM 5/1/2006, Ranjit Pandit wrote:
>On 5/1/06, Or Gerlitz <ogerlitz at voltaire.com> wrote:
>>Can you elaborate on each of the features, specifically the following
>>points are of interest to us:
>>
>>+1 so you running Oracle Loopback traffic over RDS sockets? if yes, what
>>the issue here?
>>the openib CMA supports listen/connect on loopback addresses (eg
>>127.0.0.1 or IPoIB local address)
>
>Yes.
>There is no issue. It's just next in line for me to implement.
>
>>
>>+2 by failover, are you referring to APM? that is failover between IB
>>pathes to/from the same HCA
>>over which the original connection/QP was established or you are talking
>>on failover between HCAs
>
>Failover within and across HCAs. APM does not work for failover across HCAs.

That is because it is two different types of fail over being 
discussed.  APM is completely transparent to the IB RC connections thus 
there is no disruption or loss of data.  Fail over across HCA is in effect 
replaying ULP transactions across a new RC connection.  Without an 
application / ULP level acknowledgement, there is still a hole in the RDS 
proposal that has been raised and acknowledged in the past as existing as 
recently as the Sonoma get together.

I still have not seen a response to my inquiry about the this ULP and API 
changes being at least comprehended beyond the Oracle usage model and 
perhaps being reviewed within the IETF given it represents changes in API 
and communication semantics.  If the goal is to have RDS be a generic 
service then it should be reviewed and validated by other potential 
consumers as well as those subsystems that may be impacted.

Mike



>>+3 is the no support for /proc like for RDS an issue to run crload or
>>demo Oracle (that is specific tuning
>>  and usage of non defaults is needed for any/optimal operation)
>
>No, this does not affect core functionality. You should be able to run
>Oracle or crload without this feature.
>
>That was a list of things that still need to be implemented for GA and
>not just demo
>
>>
>>Or.
>>
>>[openfabrics-ewg] Before we can start testing - we needto ensure that
>>RDS is fully ported.
>>
>>Pandit, Ranjit rpandit at silverstorm.com
>>
>>Following features are yet to be implemented in OpenFabric Rds:
>>
>>  1.     Failover
>>2.      Loopback connections
>>3.      support for /proc fs like Rds config, stats and info.
>>
>>
>>
>>Ranjit
>>
>>
>>
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