Re: apply for a new repo "openbmc/node-data-sync"

[Patrick Williams <patrick@stwcx.xyz>]

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On Mon, Apr 12, 2021 at 02:38:38PM +0800, yugang.chen wrote:
> thanks, Brad.
> 
> + openbmc@lists.ozlabs.org .
> 
> Dear All,
> 
> I'm Intel BMC engineer, we have a module is used to sync sensor data between BMC nodes in one Chassis system. In our Modular system, there are 2 nodes or 4 nodes, one node works as Primary node, the other nodes work as secondary nodes.
> 
> 1. Some sensors are only visible for primary BMC, but secondary nodes need the sensors for Fan control.
> 
> 2. Some sensor are in secondary nodes, they are needed to show them on primary node.
> 
> So, we need a new repo to sync the sensor data between primary node and secondary nodes, could you create a repo "openbmc/node-data-sync"? thanks.

Do you have a design on how this would be accomplished?  I'm curious
what your proposal ends up looking like at a dbus-level.  We should make
sure this is documented at a high level and also aligns with how we are
handling multi-host scenarios already in our dbus layout.

How are the two BMC devices connected?  How do you ensure you can safely
/ securely accept the data between the two BMCs?  If done poorly this
could open up a large security attack surface.

I suspect your software design is somewhat driven by a particular hardware
design as well, so we need to make sure it is clear the scoping of your
solution and should probably even communicate that in the name.  For
instance, if your data transport is IPMB over i2c and you don't plan on
this being a general daemon that could be expanded to a network
connection, we shouldn't name it so generally.

-- 
Patrick Williams

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